Introduction to the reprodutive biology of damsel fly and its mechanism
•Télécharger en tant que PPTX, PDF•
0 j'aime•9 vues
Damselflies are slender insects known for their delicate wings and vibrant colors. They live near freshwater habitats where they can find food and lay eggs. The males perform aerial displays to attract mates, and once paired, the female deposits her eggs in the water. The eggs hatch into aquatic nymphs that live in the water for weeks or months before emerging as adult damselflies. However, damselflies face threats from habitat loss, pollution, and climate change, so conservation efforts aim to protect their wetland homes.
Signaler
Partager
Signaler
Partager
Recommandé
LA: Butterfly Gardening
This document provides information on gardening to attract butterflies in Louisiana. It discusses the benefits of butterfly gardening, including that butterflies are pollinators and ecological indicators. It also outlines the basic requirements for a butterfly garden: food, water, shelter, and space to reproduce. The document then describes the life cycle of butterflies and lists common butterfly species found in Louisiana. It provides tips for planting locations and features to include like nectar plants, drinking water, basking spots, and fruit.
Amphibians
Amphibians use their skin for respiration and some small species rely entirely on their skin for breathing. They reproduce in water and have permeable skin, making them sensitive to environmental changes. Amphibians evolved from sarcopterygian fish in the Devonian period and inhabit a variety of terrestrial, fossorial, arboreal, and freshwater habitats, starting as larvae in water and undergoing metamorphosis to air-breathing adults on land for most species.
Carcass
Carcass beetles, also known as hide beetles, are scavengers that feed on the dry remains of dead animals. They have a bumpy, warty appearance and can hide by covering themselves with dirt. Carcass beetles are found worldwide and include over 300 species. They are important in forensic investigations, as their presence on burned bodies can help estimate time of death. Rove beetles and carrion beetles also assist in estimating the post-mortem interval based on their life cycles and presence at carcasses at different stages of decomposition. Both larvae and adults of these beetle families feed on carrion and maggots.
Bio News Letter
Sea urchins and sand dollars are echinoderms that have a rounded body covered in sharp spines for protection. They have radial symmetry and can move their spines in response to stimuli like shadows or touch. They reproduce sexually through external fertilization. While they have a poorly developed respiratory system, they can take in oxygen through spines and have a water vascular system for movement and feeding without gills. Echinoderms are found along the sea floor where they eat algae and debris and are an important part of the marine food chain, though they try to avoid predators.
Invertebrates
The document describes several different animals:
- The cobalt blue tarantula, which has blue legs and lives in southeast Asian rainforests.
- The blue-ringed octopus, which is small but highly venomous and lives in tide pools from Japan to Australia.
- The Christmas beetle of Australia, which appears around Christmas and has a lifecycle that involves egg-laying and larvae living in soil.
- Several other invertebrates like butterflies, sponges, anemones, jellyfish, starfish, and praying mantises.
- Killer ants called Siafu ants of Africa that can migrate in colonies of 50 million and kill anything edible.
- T
Phylum nematomorpha
The document summarizes the phylum Nematomorpha. Nematomorphs have cylindrical, unsegmented bodies and bilateral symmetry. They reproduce sexually, with females laying millions of eggs. The eggs hatch into larvae that develop cysts and infect intermediate hosts like aquatic insects. The cysts are carried to land insects and then to the final hosts, usually crickets. Inside the cricket, the worm manipulates its behavior and causes it to commit "suicide", allowing the worm to emerge and complete its life cycle by reproducing. Two classes are described - Nectomatoda contains the only marine species that parasitizes crustaceans, while Gordioda contains freshwater and semi-terrestrial species that
MATTING BEHAVIOR IN AMPHIBIANS.pptx
Mating behavior in amphibians involves courtship displays, mate selection, and copulation. For frogs and toads, males call or display to attract females. Once selected, males grasp females in amplexus and externally fertilize eggs as the female lays them. Salamanders and newts use pheromones, dances, or spermatophores deposited on the ground to reproduce. Caecilians have various reproductive modes, from laying eggs to giving live birth. Courtship involves tactile stimulation or pheromones.
Amphibia.pptx
This document discusses the reproduction and lifecycles of amphibians. It notes that while some salamanders lay eggs in water that hatch into swimming larvae, others reproduce on land with the eggs hatching into miniature adults. Some salamanders have become fully terrestrial with eggs developing fully into tiny adults inside the mother's body. Caecilians also show various reproductive strategies from laying eggs in water or land, to giving birth to larvae or miniature adults.
Recommandé
LA: Butterfly Gardening
This document provides information on gardening to attract butterflies in Louisiana. It discusses the benefits of butterfly gardening, including that butterflies are pollinators and ecological indicators. It also outlines the basic requirements for a butterfly garden: food, water, shelter, and space to reproduce. The document then describes the life cycle of butterflies and lists common butterfly species found in Louisiana. It provides tips for planting locations and features to include like nectar plants, drinking water, basking spots, and fruit.
Amphibians
Amphibians use their skin for respiration and some small species rely entirely on their skin for breathing. They reproduce in water and have permeable skin, making them sensitive to environmental changes. Amphibians evolved from sarcopterygian fish in the Devonian period and inhabit a variety of terrestrial, fossorial, arboreal, and freshwater habitats, starting as larvae in water and undergoing metamorphosis to air-breathing adults on land for most species.
Carcass
Carcass beetles, also known as hide beetles, are scavengers that feed on the dry remains of dead animals. They have a bumpy, warty appearance and can hide by covering themselves with dirt. Carcass beetles are found worldwide and include over 300 species. They are important in forensic investigations, as their presence on burned bodies can help estimate time of death. Rove beetles and carrion beetles also assist in estimating the post-mortem interval based on their life cycles and presence at carcasses at different stages of decomposition. Both larvae and adults of these beetle families feed on carrion and maggots.
Bio News Letter
Sea urchins and sand dollars are echinoderms that have a rounded body covered in sharp spines for protection. They have radial symmetry and can move their spines in response to stimuli like shadows or touch. They reproduce sexually through external fertilization. While they have a poorly developed respiratory system, they can take in oxygen through spines and have a water vascular system for movement and feeding without gills. Echinoderms are found along the sea floor where they eat algae and debris and are an important part of the marine food chain, though they try to avoid predators.
Invertebrates
The document describes several different animals:
- The cobalt blue tarantula, which has blue legs and lives in southeast Asian rainforests.
- The blue-ringed octopus, which is small but highly venomous and lives in tide pools from Japan to Australia.
- The Christmas beetle of Australia, which appears around Christmas and has a lifecycle that involves egg-laying and larvae living in soil.
- Several other invertebrates like butterflies, sponges, anemones, jellyfish, starfish, and praying mantises.
- Killer ants called Siafu ants of Africa that can migrate in colonies of 50 million and kill anything edible.
- T
Phylum nematomorpha
The document summarizes the phylum Nematomorpha. Nematomorphs have cylindrical, unsegmented bodies and bilateral symmetry. They reproduce sexually, with females laying millions of eggs. The eggs hatch into larvae that develop cysts and infect intermediate hosts like aquatic insects. The cysts are carried to land insects and then to the final hosts, usually crickets. Inside the cricket, the worm manipulates its behavior and causes it to commit "suicide", allowing the worm to emerge and complete its life cycle by reproducing. Two classes are described - Nectomatoda contains the only marine species that parasitizes crustaceans, while Gordioda contains freshwater and semi-terrestrial species that
MATTING BEHAVIOR IN AMPHIBIANS.pptx
Mating behavior in amphibians involves courtship displays, mate selection, and copulation. For frogs and toads, males call or display to attract females. Once selected, males grasp females in amplexus and externally fertilize eggs as the female lays them. Salamanders and newts use pheromones, dances, or spermatophores deposited on the ground to reproduce. Caecilians have various reproductive modes, from laying eggs to giving live birth. Courtship involves tactile stimulation or pheromones.
Amphibia.pptx
This document discusses the reproduction and lifecycles of amphibians. It notes that while some salamanders lay eggs in water that hatch into swimming larvae, others reproduce on land with the eggs hatching into miniature adults. Some salamanders have become fully terrestrial with eggs developing fully into tiny adults inside the mother's body. Caecilians also show various reproductive strategies from laying eggs in water or land, to giving birth to larvae or miniature adults.
Pest Profile
This document reflects on the author's experience co-teaching 3rd grade at an IB school. It was their first time working with this age group and type of school, which uses a concept-driven, inquiry-based curriculum focused on critical thinking rather than direct instruction. The author notes key differences from other elementary schools, and reflects on using an inquiry approach for the first time which required adjusting their teaching style.
Foraging behavior of dragonfly adult and larvae
Dragonfly larvae and adults are both skilled predators. Larvae use their powerful extendable lower lips and teeth to catch prey as small as daphnia or as large as small fish. They have different foraging strategies like stalking, lying in wait or burrowing. Adults are also aerial predators that catch flying insects or larger prey by snaring them in their spiky legs. Both stages use strategies like basking in the sun or shivering wings to control their body temperature and remain active hunters. Many dragonflies migrate seasonally or overwinter as larvae in a suspended state beneath ice.
Odonates
This document summarizes information about Odonata, an order of insects that includes dragonflies and damselflies. It describes their key physical characteristics like large multifaceted eyes. It outlines the major families, differences between dragonflies and damselflies, their life cycles from egg to adult, predatory behavior as nymphs and adults, mating processes, economic importance as natural mosquito predators, and some interesting facts.
Invertebrates
The document discusses several different animals including the cobalt blue tarantula, blue-ringed octopus, Christmas beetle, blue tiger butterfly, sea anemone, giant jellyfish, cushion starfish, coconut crab, praying mantis, flatworms, tapeworms, and leeches. It provides details about their physical characteristics, habitats, behaviors, diets, and life cycles.
Ee3g
The document provides information about the life cycle of mosquitoes, which includes four stages:
1. Eggs are laid by female mosquitoes and hatch within 48-72 hours into larvae.
2. Larvae, or "wrigglers", live in water and breathe through a siphon tube. They molt four times over 5-6 days.
3. Pupae, or "tumblers", live at the water surface for 1-4 days until an adult mosquito emerges from the casing.
4. Only female mosquitoes bite to obtain blood meals needed to develop eggs, while males feed on plant juices. Various species have different biting behaviors and flight ranges.
Zoology Guide
The document provides information on various mammals, birds, and other animals found on the island, including the Brahman cow, long-tailed macaque, smooth-coated otter, wild boar, oriental magpie robin, grey heron, baya weaver, pink-necked green pigeon, spotted wood owl, Asian drongo cuckoo, giant mudskipper, Rodong snail, horseshoe crab, brittle star, maritime gecko, and changeable garden lizard. For each species, it lists their origin, conservation status, habitat, key identifying characteristics and behaviors.
BIOLOGY OF SEASTAR AND FEATHER STAR-1.pptx
The document discusses biology of seastars and feather stars. It provides details about their taxonomy, physical characteristics, habitat, distribution, locomotion, feeding, reproduction, threats and more. Seastars are carnivorous predators related to other echinoderms that use tube feet and a water vascular system to move. Feather stars are crinoids found in warm waters that feed by trapping particles in their feathery arms. While seastars face threats from habitat loss and temperature changes, no feather star species are currently threatened.
Insect terotoriality
This document provides information about various behaviors and characteristics of ants, honey bees, dragonflies, monarch butterflies, and grasshoppers. It discusses how ants communicate using pheromones and sound, how they defend territories and nests, and how honey bees communicate through dance. It also describes monarch butterfly migration, dragonfly flight speeds and motion camouflage techniques, and grasshopper defense through camouflage, mimicry, and stridulation.
Classification of Animals-Seanna Sofiah Santillan.ppt
This document classifies and describes the characteristics of vertebrates and invertebrates. Vertebrates include mammals, birds, reptiles, amphibians, and fish. They are defined as animals with backbones. Invertebrates make up 97% of animal species and do not have backbones. They are grouped into sponges, jellyfish, worms, mollusks, arthropods, and starfish/sea urchins. Each group has distinguishing traits such as exoskeletons, segmentation, or shells.
ALL ABOUT AMPHIBIANS ALL ABOUT AMPHIBIANS.pptx
Amphibians are vertebrates with moist skin that helps them breathe and absorb water. They mostly live in humid environments and undergo a process of metamorphosis from egg to larva to adult. Examples include frogs, salamanders, newts, caecilians, and axolotls. Amphibians reproduce through internal or external fertilization, laying eggs in water that develop into larvae with gills before transforming into terrestrial adults.
ORIGINAL PRESENTATION.pptx hhhnnfffbbhhjnv
The phylum Echinodermata contains about 6000 living marine species distributed among five classes. They are exclusively found in oceans and seas, inhabiting both deep waters and intertidal zones. Echinoderms have unique shapes and colors, and play important ecological and geological roles. They reproduce both sexually and asexually, with external fertilization and larval development. Common examples included starfish, sea lilies, sea cucumbers, sea urchins, and brittle stars.
Echinoderms are the only invertebrate group of deuterostomes.pdf
Echinoderms are the only invertebrate group of deuterostomes - . Echinoderm comes from echino-
, meaning "spiny, and -oerm, meaning "skin." Most echinoderms have some type of spine
embedded in their skin. For some species, such as the sea urchin, these spines are very large,
but. for other species, such as the starfish, these spines may be very small. Acanthaster planci,
also known as the crown-of-thorns starfish, is a Iarge venomous echinoderm. These starfish live
on coral reefs in the Pacific Ocean, Indian Ocean, and Red Sea. They are predators that feed on
the living polyps of corals. In the last few decades, populations of these starfish have gone up
dramatically, and they have subsequently caused a lot of damage to fragile coral reef ecosystems.
A single crown-of-thorns starfish can destroy up to 6 square meters ( 65 square feet) of living coral
reef in a single yeac.Like all starfish, the crown-of-thorns starfish is symmetrical as an aduit but
develops from a symmetrical larve. It senses its surrounding environment throuah the help of
eyespots at the tips of its arms, and it responds to this sensation through signals sent. The crown-
of-thorns starfish moves across the coral reef seeking new prey through the use ofWaterFrame /
Alamy Like all starfish, the crown-of-thorns starfish is symmetrical as an adult but develops from a
symmetrical larva. It senses its surrounding environment throuah the help of eyespots at the tips of
its arms, and it responds to this sensation through signals sent. The crown-of-thorns starfish
moves across the coral reef seeking new prey through the use ofWaterFrame / Alamy
begin{tabular}{|c|} hline from its ossicles from its decentralized nervous system from its brain
symmetrical as an adult but develops from a ish is ghe help of eyespots at the tips of its agms and
responds to this sensation ithiough signals sert end{tabular} The crown-of-thoms starfish moves
across the coral reef seeking new prey through the use ofWaterFrame / Alamy f-thorns starfish is
symmetrical as an adult but develops from a symmetrical larva. it onment through the help of
eyespots at the tips of its arms, and it responds to this sensation through signals sent . The crown-
of-thorns starfish moves across the coral reef seeking new prey through the use of.
MOTH N BUTTERFLY
This document discusses the evolution, anatomy, life cycles, feeding habits, migration, and importance of butterflies and moths. It notes that butterflies and moths have existed since the Jurassic period 190 million years ago and have adapted to climate changes. Their anatomy includes wings, antennae, eyes, and other features. They go through a life cycle of egg, caterpillar, pupa, and adult. Some migrate long distances to escape unfavorable conditions while others migrate shorter distances. They are important for pollination, pest control, and as parts of the ecosystem and food chain.
Butterflies2
Butterfly wings are made of a thin membrane covered with colorful scales that provide strength and stability. A butterfly's scales are pigmented to produce various colors and patterns. During development, butterflies go through stages as an egg, larvae, pupa, and finally adult. As adults, butterflies use their wings and flight to search for mates, food, and migrate. Their colorful wings and patterns provide camouflage and warnings to deter predators.
Classification of animals
This document classifies and describes the key characteristics of vertebrates and invertebrates. Vertebrates include mammals, fish, reptiles, birds and amphibians, and can be found around the world. They are divided into groups based on traits like whether they lay eggs, have feathers or fur, breathe through lungs or gills, and how they regulate their body temperature. Invertebrates make up 97% of animal species and lack backbones, including insects, worms, sponges, jellyfish, starfish, mollusks and arthropods. They are grouped by their exoskeleton, body structure and environment.
Butterflies
The document summarizes the four life cycle phases of a butterfly:
1. Eggs are laid on leaves and hatch into caterpillars.
2. Caterpillars molt several times as they eat voraciously.
3. When fully grown, the caterpillar attaches itself and forms a chrysalis where it undergoes metamorphosis.
4. An adult butterfly emerges from the chrysalis with wet wings that soon harden and allow it to fly while feeding on nectar and searching for mates.
Butterflies
The document summarizes the four life cycle phases of a butterfly:
1. Eggs are laid on leaves and hatch into caterpillars.
2. Caterpillars molt several times as they eat voraciously.
3. When fully grown, the caterpillar attaches itself and forms a chrysalis or pupa.
4. Inside the pupa, the caterpillar undergoes metamorphosis and emerges as an adult butterfly ready to mate and lay new eggs.
Phylum cnidaria report
Cnidarians like hydra, jellyfish, coral, and sea anemones can take the form of polyps or medusas. Polyps are attached to surfaces while medusas are free-swimming. They capture prey using nematocysts in their tentacles and digest food in their guts. Reproduction varies between species, but includes both asexual budding and sexual reproduction.
Animals That Lay Eggs (with Pictures).pdf
Organisms have different methods of reproduction. To tell the truth, these different reproductive methods are the factors that divide animals into two categories: viviparous and oviparous animals. But more on that in a bit, here's a blog on the many different animals that lay eggs!
Do you want to know about animals that lay eggs?
Nature's way of maintaining the ecological balance on earth is something special. For example, Mother Nature has endowed living animals with the ability to go through the process of labor to directly give birth to their own kind.
Whereas, oviparous animals lay eggs that give birth to young as soon as they hatch.
Now, if you are stuck wondering because nature has allocated different reproductive processes to different animals, then we are just as clueless as you!
However, you can acknowledge the fact that every process created by nature is purposeful. For example, if nature has given birds the ability to lay eggs to produce their offspring, it may be for their own benefit.
The main reason for this is that birds cannot fly while carrying the weight of their young. By laying their eggs in a remote location, they thereby safeguard both themselves and their offspring.
We also understand how interested you are in learning about the ovoid animal species.
So, read on to know more about the complex egg-laying process and a description of the top 13 animals that lay eggs.
Animals That Lay Eggs
If we were to list all oviparous animals, you would get tired of reading the never-ending list!
A large number of prominent species in the animal kingdom are oviparous, including insects, birds, amphibians, reptiles, fish and even some mammals.
So, if you are ready to know about 13 animals that lay eggs, connect with us!
Birds
Birds are the first members of our list of animals that lay eggs. Birds are the most lively and colorful species of the animal kingdom, somewhat related to the ancient family of reptiles, the dinosaurs.
They are a very unique creation of nature because they are the only animals with feathers that are known to exist on Earth. These warm-blooded vertebrates are also known to be closest to reptiles due to the rough shape of their feet.
The largest birds alive today are the North African ostriches, which can reach 9 feet in height and weigh up to 350 pounds. The ostrich egg is the largest of any other bird species.
On the other hand, the smallest extant birds are Cuban native hummingbirds weighing less than 3 grams.
Also, the bird's feathers make them stand out among every other species.
However, having wings does not guarantee a bird's ability to fly. There are several flightless birds, including penguins, kiwis and ostriches, which, although they have wings, cannot fly due to some evolution that took place over the years.
Also, bird eggs have a hard shell that ensures safety and are laid in secluded areas like bird nests, such as a treetop or an abandoned room. The parents fulfill the responsibility of taking care it...
9 REAL Halloween Monsters
These creatures all exist in our world today and are every bit as fantastical as our imaginations.
9 Real Halloween Monsters!
快速办理(UAM毕业证书)马德里自治大学毕业证学位证一模一样
学校原件一模一样【微信：741003700 】《(UAM毕业证书)马德里自治大学毕业证学位证》【微信：741003700 】学位证，留信认证（真实可查，永久存档）原件一模一样纸张工艺/offer、雅思、外壳等材料/诚信可靠,可直接看成品样本，帮您解决无法毕业带来的各种难题！外壳，原版制作，诚信可靠，可直接看成品样本。行业标杆！精益求精，诚心合作，真诚制作！多年品质 ,按需精细制作，24小时接单,全套进口原装设备。十五年致力于帮助留学生解决难题，包您满意。
本公司拥有海外各大学样板无数，能完美还原。
1:1完美还原海外各大学毕业材料上的工艺：水印，阴影底纹，钢印LOGO烫金烫银，LOGO烫金烫银复合重叠。文字图案浮雕、激光镭射、紫外荧光、温感、复印防伪等防伪工艺。材料咨询办理、认证咨询办理请加学历顾问Q/微741003700
【主营项目】
一.毕业证【q微741003700】成绩单、使馆认证、教育部认证、雅思托福成绩单、学生卡等！
二.真实使馆公证(即留学回国人员证明,不成功不收费)
三.真实教育部学历学位认证（教育部存档！教育部留服网站永久可查）
四.办理各国各大学文凭(一对一专业服务,可全程监控跟踪进度)
如果您处于以下几种情况：
◇在校期间，因各种原因未能顺利毕业……拿不到官方毕业证【q/微741003700】
◇面对父母的压力，希望尽快拿到；
◇不清楚认证流程以及材料该如何准备；
◇回国时间很长，忘记办理；
◇回国马上就要找工作，办给用人单位看；
◇企事业单位必须要求办理的
◇需要报考公务员、购买免税车、落转户口
◇申请留学生创业基金
留信网认证的作用:
1:该专业认证可证明留学生真实身份
2:同时对留学生所学专业登记给予评定
3:国家专业人才认证中心颁发入库证书
4:这个认证书并且可以归档倒地方
5:凡事获得留信网入网的信息将会逐步更新到个人身份内，将在公安局网内查询个人身份证信息后，同步读取人才网入库信息
6:个人职称评审加20分
7:个人信誉贷款加10分
8:在国家人才网主办的国家网络招聘大会中纳入资料，供国家高端企业选择人才
The debris of the ‘last major merger’ is dynamically young
The Milky Way’s (MW) inner stellar halo contains an [Fe/H]-rich component with highly eccentric orbits, often referred to as the
‘last major merger.’ Hypotheses for the origin of this component include Gaia-Sausage/Enceladus (GSE), where the progenitor
collided with the MW proto-disc 8–11 Gyr ago, and the Virgo Radial Merger (VRM), where the progenitor collided with the
MW disc within the last 3 Gyr. These two scenarios make different predictions about observable structure in local phase space,
because the morphology of debris depends on how long it has had to phase mix. The recently identified phase-space folds in Gaia
DR3 have positive caustic velocities, making them fundamentally different than the phase-mixed chevrons found in simulations
at late times. Roughly 20 per cent of the stars in the prograde local stellar halo are associated with the observed caustics. Based
on a simple phase-mixing model, the observed number of caustics are consistent with a merger that occurred 1–2 Gyr ago.
We also compare the observed phase-space distribution to FIRE-2 Latte simulations of GSE-like mergers, using a quantitative
measurement of phase mixing (2D causticality). The observed local phase-space distribution best matches the simulated data
1–2 Gyr after collision, and certainly not later than 3 Gyr. This is further evidence that the progenitor of the ‘last major merger’
did not collide with the MW proto-disc at early times, as is thought for the GSE, but instead collided with the MW disc within
the last few Gyr, consistent with the body of work surrounding the VRM.
Contenu connexe
Similaire à Introduction to the reprodutive biology of damsel fly and its mechanism
Pest Profile
This document reflects on the author's experience co-teaching 3rd grade at an IB school. It was their first time working with this age group and type of school, which uses a concept-driven, inquiry-based curriculum focused on critical thinking rather than direct instruction. The author notes key differences from other elementary schools, and reflects on using an inquiry approach for the first time which required adjusting their teaching style.
Foraging behavior of dragonfly adult and larvae
Dragonfly larvae and adults are both skilled predators. Larvae use their powerful extendable lower lips and teeth to catch prey as small as daphnia or as large as small fish. They have different foraging strategies like stalking, lying in wait or burrowing. Adults are also aerial predators that catch flying insects or larger prey by snaring them in their spiky legs. Both stages use strategies like basking in the sun or shivering wings to control their body temperature and remain active hunters. Many dragonflies migrate seasonally or overwinter as larvae in a suspended state beneath ice.
Odonates
This document summarizes information about Odonata, an order of insects that includes dragonflies and damselflies. It describes their key physical characteristics like large multifaceted eyes. It outlines the major families, differences between dragonflies and damselflies, their life cycles from egg to adult, predatory behavior as nymphs and adults, mating processes, economic importance as natural mosquito predators, and some interesting facts.
Invertebrates
The document discusses several different animals including the cobalt blue tarantula, blue-ringed octopus, Christmas beetle, blue tiger butterfly, sea anemone, giant jellyfish, cushion starfish, coconut crab, praying mantis, flatworms, tapeworms, and leeches. It provides details about their physical characteristics, habitats, behaviors, diets, and life cycles.
Ee3g
The document provides information about the life cycle of mosquitoes, which includes four stages:
1. Eggs are laid by female mosquitoes and hatch within 48-72 hours into larvae.
2. Larvae, or "wrigglers", live in water and breathe through a siphon tube. They molt four times over 5-6 days.
3. Pupae, or "tumblers", live at the water surface for 1-4 days until an adult mosquito emerges from the casing.
4. Only female mosquitoes bite to obtain blood meals needed to develop eggs, while males feed on plant juices. Various species have different biting behaviors and flight ranges.
Zoology Guide
The document provides information on various mammals, birds, and other animals found on the island, including the Brahman cow, long-tailed macaque, smooth-coated otter, wild boar, oriental magpie robin, grey heron, baya weaver, pink-necked green pigeon, spotted wood owl, Asian drongo cuckoo, giant mudskipper, Rodong snail, horseshoe crab, brittle star, maritime gecko, and changeable garden lizard. For each species, it lists their origin, conservation status, habitat, key identifying characteristics and behaviors.
BIOLOGY OF SEASTAR AND FEATHER STAR-1.pptx
The document discusses biology of seastars and feather stars. It provides details about their taxonomy, physical characteristics, habitat, distribution, locomotion, feeding, reproduction, threats and more. Seastars are carnivorous predators related to other echinoderms that use tube feet and a water vascular system to move. Feather stars are crinoids found in warm waters that feed by trapping particles in their feathery arms. While seastars face threats from habitat loss and temperature changes, no feather star species are currently threatened.
Insect terotoriality
This document provides information about various behaviors and characteristics of ants, honey bees, dragonflies, monarch butterflies, and grasshoppers. It discusses how ants communicate using pheromones and sound, how they defend territories and nests, and how honey bees communicate through dance. It also describes monarch butterfly migration, dragonfly flight speeds and motion camouflage techniques, and grasshopper defense through camouflage, mimicry, and stridulation.
Classification of Animals-Seanna Sofiah Santillan.ppt
This document classifies and describes the characteristics of vertebrates and invertebrates. Vertebrates include mammals, birds, reptiles, amphibians, and fish. They are defined as animals with backbones. Invertebrates make up 97% of animal species and do not have backbones. They are grouped into sponges, jellyfish, worms, mollusks, arthropods, and starfish/sea urchins. Each group has distinguishing traits such as exoskeletons, segmentation, or shells.
ALL ABOUT AMPHIBIANS ALL ABOUT AMPHIBIANS.pptx
Amphibians are vertebrates with moist skin that helps them breathe and absorb water. They mostly live in humid environments and undergo a process of metamorphosis from egg to larva to adult. Examples include frogs, salamanders, newts, caecilians, and axolotls. Amphibians reproduce through internal or external fertilization, laying eggs in water that develop into larvae with gills before transforming into terrestrial adults.
ORIGINAL PRESENTATION.pptx hhhnnfffbbhhjnv
The phylum Echinodermata contains about 6000 living marine species distributed among five classes. They are exclusively found in oceans and seas, inhabiting both deep waters and intertidal zones. Echinoderms have unique shapes and colors, and play important ecological and geological roles. They reproduce both sexually and asexually, with external fertilization and larval development. Common examples included starfish, sea lilies, sea cucumbers, sea urchins, and brittle stars.
Echinoderms are the only invertebrate group of deuterostomes.pdf
Echinoderms are the only invertebrate group of deuterostomes - . Echinoderm comes from echino-
, meaning "spiny, and -oerm, meaning "skin." Most echinoderms have some type of spine
embedded in their skin. For some species, such as the sea urchin, these spines are very large,
but. for other species, such as the starfish, these spines may be very small. Acanthaster planci,
also known as the crown-of-thorns starfish, is a Iarge venomous echinoderm. These starfish live
on coral reefs in the Pacific Ocean, Indian Ocean, and Red Sea. They are predators that feed on
the living polyps of corals. In the last few decades, populations of these starfish have gone up
dramatically, and they have subsequently caused a lot of damage to fragile coral reef ecosystems.
A single crown-of-thorns starfish can destroy up to 6 square meters ( 65 square feet) of living coral
reef in a single yeac.Like all starfish, the crown-of-thorns starfish is symmetrical as an aduit but
develops from a symmetrical larve. It senses its surrounding environment throuah the help of
eyespots at the tips of its arms, and it responds to this sensation through signals sent. The crown-
of-thorns starfish moves across the coral reef seeking new prey through the use ofWaterFrame /
Alamy Like all starfish, the crown-of-thorns starfish is symmetrical as an adult but develops from a
symmetrical larva. It senses its surrounding environment throuah the help of eyespots at the tips of
its arms, and it responds to this sensation through signals sent. The crown-of-thorns starfish
moves across the coral reef seeking new prey through the use ofWaterFrame / Alamy
begin{tabular}{|c|} hline from its ossicles from its decentralized nervous system from its brain
symmetrical as an adult but develops from a ish is ghe help of eyespots at the tips of its agms and
responds to this sensation ithiough signals sert end{tabular} The crown-of-thoms starfish moves
across the coral reef seeking new prey through the use ofWaterFrame / Alamy f-thorns starfish is
symmetrical as an adult but develops from a symmetrical larva. it onment through the help of
eyespots at the tips of its arms, and it responds to this sensation through signals sent . The crown-
of-thorns starfish moves across the coral reef seeking new prey through the use of.
MOTH N BUTTERFLY
This document discusses the evolution, anatomy, life cycles, feeding habits, migration, and importance of butterflies and moths. It notes that butterflies and moths have existed since the Jurassic period 190 million years ago and have adapted to climate changes. Their anatomy includes wings, antennae, eyes, and other features. They go through a life cycle of egg, caterpillar, pupa, and adult. Some migrate long distances to escape unfavorable conditions while others migrate shorter distances. They are important for pollination, pest control, and as parts of the ecosystem and food chain.
Butterflies2
Butterfly wings are made of a thin membrane covered with colorful scales that provide strength and stability. A butterfly's scales are pigmented to produce various colors and patterns. During development, butterflies go through stages as an egg, larvae, pupa, and finally adult. As adults, butterflies use their wings and flight to search for mates, food, and migrate. Their colorful wings and patterns provide camouflage and warnings to deter predators.
Classification of animals
This document classifies and describes the key characteristics of vertebrates and invertebrates. Vertebrates include mammals, fish, reptiles, birds and amphibians, and can be found around the world. They are divided into groups based on traits like whether they lay eggs, have feathers or fur, breathe through lungs or gills, and how they regulate their body temperature. Invertebrates make up 97% of animal species and lack backbones, including insects, worms, sponges, jellyfish, starfish, mollusks and arthropods. They are grouped by their exoskeleton, body structure and environment.
Butterflies
The document summarizes the four life cycle phases of a butterfly:
1. Eggs are laid on leaves and hatch into caterpillars.
2. Caterpillars molt several times as they eat voraciously.
3. When fully grown, the caterpillar attaches itself and forms a chrysalis where it undergoes metamorphosis.
4. An adult butterfly emerges from the chrysalis with wet wings that soon harden and allow it to fly while feeding on nectar and searching for mates.
Butterflies
The document summarizes the four life cycle phases of a butterfly:
1. Eggs are laid on leaves and hatch into caterpillars.
2. Caterpillars molt several times as they eat voraciously.
3. When fully grown, the caterpillar attaches itself and forms a chrysalis or pupa.
4. Inside the pupa, the caterpillar undergoes metamorphosis and emerges as an adult butterfly ready to mate and lay new eggs.
Phylum cnidaria report
Cnidarians like hydra, jellyfish, coral, and sea anemones can take the form of polyps or medusas. Polyps are attached to surfaces while medusas are free-swimming. They capture prey using nematocysts in their tentacles and digest food in their guts. Reproduction varies between species, but includes both asexual budding and sexual reproduction.
Animals That Lay Eggs (with Pictures).pdf
Organisms have different methods of reproduction. To tell the truth, these different reproductive methods are the factors that divide animals into two categories: viviparous and oviparous animals. But more on that in a bit, here's a blog on the many different animals that lay eggs!
Do you want to know about animals that lay eggs?
Nature's way of maintaining the ecological balance on earth is something special. For example, Mother Nature has endowed living animals with the ability to go through the process of labor to directly give birth to their own kind.
Whereas, oviparous animals lay eggs that give birth to young as soon as they hatch.
Now, if you are stuck wondering because nature has allocated different reproductive processes to different animals, then we are just as clueless as you!
However, you can acknowledge the fact that every process created by nature is purposeful. For example, if nature has given birds the ability to lay eggs to produce their offspring, it may be for their own benefit.
The main reason for this is that birds cannot fly while carrying the weight of their young. By laying their eggs in a remote location, they thereby safeguard both themselves and their offspring.
We also understand how interested you are in learning about the ovoid animal species.
So, read on to know more about the complex egg-laying process and a description of the top 13 animals that lay eggs.
Animals That Lay Eggs
If we were to list all oviparous animals, you would get tired of reading the never-ending list!
A large number of prominent species in the animal kingdom are oviparous, including insects, birds, amphibians, reptiles, fish and even some mammals.
So, if you are ready to know about 13 animals that lay eggs, connect with us!
Birds
Birds are the first members of our list of animals that lay eggs. Birds are the most lively and colorful species of the animal kingdom, somewhat related to the ancient family of reptiles, the dinosaurs.
They are a very unique creation of nature because they are the only animals with feathers that are known to exist on Earth. These warm-blooded vertebrates are also known to be closest to reptiles due to the rough shape of their feet.
The largest birds alive today are the North African ostriches, which can reach 9 feet in height and weigh up to 350 pounds. The ostrich egg is the largest of any other bird species.
On the other hand, the smallest extant birds are Cuban native hummingbirds weighing less than 3 grams.
Also, the bird's feathers make them stand out among every other species.
However, having wings does not guarantee a bird's ability to fly. There are several flightless birds, including penguins, kiwis and ostriches, which, although they have wings, cannot fly due to some evolution that took place over the years.
Also, bird eggs have a hard shell that ensures safety and are laid in secluded areas like bird nests, such as a treetop or an abandoned room. The parents fulfill the responsibility of taking care it...
9 REAL Halloween Monsters
These creatures all exist in our world today and are every bit as fantastical as our imaginations.
9 Real Halloween Monsters!
Similaire à Introduction to the reprodutive biology of damsel fly and its mechanism (20)
Classification of Animals-Seanna Sofiah Santillan.ppt
Classification of Animals-Seanna Sofiah Santillan.ppt
Echinoderms are the only invertebrate group of deuterostomes.pdf
Echinoderms are the only invertebrate group of deuterostomes.pdf
Dernier
快速办理(UAM毕业证书)马德里自治大学毕业证学位证一模一样
学校原件一模一样【微信：741003700 】《(UAM毕业证书)马德里自治大学毕业证学位证》【微信：741003700 】学位证，留信认证（真实可查，永久存档）原件一模一样纸张工艺/offer、雅思、外壳等材料/诚信可靠,可直接看成品样本，帮您解决无法毕业带来的各种难题！外壳，原版制作，诚信可靠，可直接看成品样本。行业标杆！精益求精，诚心合作，真诚制作！多年品质 ,按需精细制作，24小时接单,全套进口原装设备。十五年致力于帮助留学生解决难题，包您满意。
本公司拥有海外各大学样板无数，能完美还原。
1:1完美还原海外各大学毕业材料上的工艺：水印，阴影底纹，钢印LOGO烫金烫银，LOGO烫金烫银复合重叠。文字图案浮雕、激光镭射、紫外荧光、温感、复印防伪等防伪工艺。材料咨询办理、认证咨询办理请加学历顾问Q/微741003700
【主营项目】
一.毕业证【q微741003700】成绩单、使馆认证、教育部认证、雅思托福成绩单、学生卡等！
二.真实使馆公证(即留学回国人员证明,不成功不收费)
三.真实教育部学历学位认证（教育部存档！教育部留服网站永久可查）
四.办理各国各大学文凭(一对一专业服务,可全程监控跟踪进度)
如果您处于以下几种情况：
◇在校期间，因各种原因未能顺利毕业……拿不到官方毕业证【q/微741003700】
◇面对父母的压力，希望尽快拿到；
◇不清楚认证流程以及材料该如何准备；
◇回国时间很长，忘记办理；
◇回国马上就要找工作，办给用人单位看；
◇企事业单位必须要求办理的
◇需要报考公务员、购买免税车、落转户口
◇申请留学生创业基金
留信网认证的作用:
1:该专业认证可证明留学生真实身份
2:同时对留学生所学专业登记给予评定
3:国家专业人才认证中心颁发入库证书
4:这个认证书并且可以归档倒地方
5:凡事获得留信网入网的信息将会逐步更新到个人身份内，将在公安局网内查询个人身份证信息后，同步读取人才网入库信息
6:个人职称评审加20分
7:个人信誉贷款加10分
8:在国家人才网主办的国家网络招聘大会中纳入资料，供国家高端企业选择人才
The debris of the ‘last major merger’ is dynamically young
The Milky Way’s (MW) inner stellar halo contains an [Fe/H]-rich component with highly eccentric orbits, often referred to as the
‘last major merger.’ Hypotheses for the origin of this component include Gaia-Sausage/Enceladus (GSE), where the progenitor
collided with the MW proto-disc 8–11 Gyr ago, and the Virgo Radial Merger (VRM), where the progenitor collided with the
MW disc within the last 3 Gyr. These two scenarios make different predictions about observable structure in local phase space,
because the morphology of debris depends on how long it has had to phase mix. The recently identified phase-space folds in Gaia
DR3 have positive caustic velocities, making them fundamentally different than the phase-mixed chevrons found in simulations
at late times. Roughly 20 per cent of the stars in the prograde local stellar halo are associated with the observed caustics. Based
on a simple phase-mixing model, the observed number of caustics are consistent with a merger that occurred 1–2 Gyr ago.
We also compare the observed phase-space distribution to FIRE-2 Latte simulations of GSE-like mergers, using a quantitative
measurement of phase mixing (2D causticality). The observed local phase-space distribution best matches the simulated data
1–2 Gyr after collision, and certainly not later than 3 Gyr. This is further evidence that the progenitor of the ‘last major merger’
did not collide with the MW proto-disc at early times, as is thought for the GSE, but instead collided with the MW disc within
the last few Gyr, consistent with the body of work surrounding the VRM.
ESA/ACT Science Coffee: Diego Blas - Gravitational wave detection with orbita...
ESA/ACT Science Coffee: Diego Blas - Gravitational wave detection with orbita...Advanced-Concepts-Team
Presentation in the Science Coffee of the Advanced Concepts Team of the European Space Agency on the 07.06.2024.
Speaker: Diego Blas (IFAE/ICREA)
Title: Gravitational wave detection with orbital motion of Moon and artificial
Abstract:
In this talk I will describe some recent ideas to find gravitational waves from supermassive black holes or of primordial origin by studying their secular effect on the orbital motion of the Moon or satellites that are laser ranged.Applied Science: Thermodynamics, Laws & Methodology.pdf
When I was asked to give a companion lecture in support of ‘The Philosophy of Science’ (https://shorturl.at/4pUXz) I decided not to walk through the detail of the many methodologies in order of use. Instead, I chose to employ a long standing, and ongoing, scientific development as an exemplar. And so, I chose the ever evolving story of Thermodynamics as a scientific investigation at its best.
Conducted over a period of >200 years, Thermodynamics R&D, and application, benefitted from the highest levels of professionalism, collaboration, and technical thoroughness. New layers of application, methodology, and practice were made possible by the progressive advance of technology. In turn, this has seen measurement and modelling accuracy continually improved at a micro and macro level.
Perhaps most importantly, Thermodynamics rapidly became a primary tool in the advance of applied science/engineering/technology, spanning micro-tech, to aerospace and cosmology. I can think of no better a story to illustrate the breadth of scientific methodologies and applications at their best.
在线办理(salfor毕业证书)索尔福德大学毕业证毕业完成信一模一样
学校原件一模一样【微信：741003700 】《(salfor毕业证书)索尔福德大学毕业证》【微信：741003700 】学位证，留信认证（真实可查，永久存档）原件一模一样纸张工艺/offer、雅思、外壳等材料/诚信可靠,可直接看成品样本，帮您解决无法毕业带来的各种难题！外壳，原版制作，诚信可靠，可直接看成品样本。行业标杆！精益求精，诚心合作，真诚制作！多年品质 ,按需精细制作，24小时接单,全套进口原装设备。十五年致力于帮助留学生解决难题，包您满意。
本公司拥有海外各大学样板无数，能完美还原。
1:1完美还原海外各大学毕业材料上的工艺：水印，阴影底纹，钢印LOGO烫金烫银，LOGO烫金烫银复合重叠。文字图案浮雕、激光镭射、紫外荧光、温感、复印防伪等防伪工艺。材料咨询办理、认证咨询办理请加学历顾问Q/微741003700
【主营项目】
一.毕业证【q微741003700】成绩单、使馆认证、教育部认证、雅思托福成绩单、学生卡等！
二.真实使馆公证(即留学回国人员证明,不成功不收费)
三.真实教育部学历学位认证（教育部存档！教育部留服网站永久可查）
四.办理各国各大学文凭(一对一专业服务,可全程监控跟踪进度)
如果您处于以下几种情况：
◇在校期间，因各种原因未能顺利毕业……拿不到官方毕业证【q/微741003700】
◇面对父母的压力，希望尽快拿到；
◇不清楚认证流程以及材料该如何准备；
◇回国时间很长，忘记办理；
◇回国马上就要找工作，办给用人单位看；
◇企事业单位必须要求办理的
◇需要报考公务员、购买免税车、落转户口
◇申请留学生创业基金
留信网认证的作用:
1:该专业认证可证明留学生真实身份
2:同时对留学生所学专业登记给予评定
3:国家专业人才认证中心颁发入库证书
4:这个认证书并且可以归档倒地方
5:凡事获得留信网入网的信息将会逐步更新到个人身份内，将在公安局网内查询个人身份证信息后，同步读取人才网入库信息
6:个人职称评审加20分
7:个人信誉贷款加10分
8:在国家人才网主办的国家网络招聘大会中纳入资料，供国家高端企业选择人才
Bob Reedy - Nitrate in Texas Groundwater.pdf
Presented at June 6-7 Texas Alliance of Groundwater Districts Business Meeting
THEMATIC APPERCEPTION TEST(TAT) cognitive abilities, creativity, and critic...
THEMATIC APPERCEPTION TEST(TAT) cognitive abilities, creativity, and critic...Abdul Wali Khan University Mardan,kP,Pakistan
hematic appreciation test is a psychological assessment tool used to measure an individual's appreciation and understanding of specific themes or topics. This test helps to evaluate an individual's ability to connect different ideas and concepts within a given theme, as well as their overall comprehension and interpretation skills. The results of the test can provide valuable insights into an individual's cognitive abilities, creativity, and critical thinking skillsDescribing and Interpreting an Immersive Learning Case with the Immersion Cub...
Current descriptions of immersive learning cases are often difficult or impossible to compare. This is due to a myriad of different options on what details to include, which aspects are relevant, and on the descriptive approaches employed. Also, these aspects often combine very specific details with more general guidelines or indicate intents and rationales without clarifying their implementation. In this paper we provide a method to describe immersive learning cases that is structured to enable comparisons, yet flexible enough to allow researchers and practitioners to decide which aspects to include. This method leverages a taxonomy that classifies educational aspects at three levels (uses, practices, and strategies) and then utilizes two frameworks, the Immersive Learning Brain and the Immersion Cube, to enable a structured description and interpretation of immersive learning cases. The method is then demonstrated on a published immersive learning case on training for wind turbine maintenance using virtual reality. Applying the method results in a structured artifact, the Immersive Learning Case Sheet, that tags the case with its proximal uses, practices, and strategies, and refines the free text case description to ensure that matching details are included. This contribution is thus a case description method in support of future comparative research of immersive learning cases. We then discuss how the resulting description and interpretation can be leveraged to change immersion learning cases, by enriching them (considering low-effort changes or additions) or innovating (exploring more challenging avenues of transformation). The method holds significant promise to support better-grounded research in immersive learning.
Pests of Storage_Identification_Dr.UPR.pdf
InIndia-post-harvestlosses-unscientificstorage,insects,rodents,micro-organismsetc.,accountforabout10percentoftotalfoodgrains
Graininfestation
Directdamage
Indirectly
•theexuviae,skin,deadinsects
•theirexcretawhichmakefoodunfitforhumanconsumption
About600speciesofinsectshavebeenassociatedwithstoredgrainproducts
100speciesofinsectpestsofstoredproductscauseeconomiclosses
Compexometric titration/Chelatorphy titration/chelating titration
Classification
Metal ion ion indicators
Masking and demasking reagents
Estimation of Magnisium sulphate
Calcium gluconate
Complexometric Titration/ chelatometry titration/chelating titration, introduction, Types-
1.Direct Titration
2.Back Titration
3.Replacement Titration
4.Indirect Titration
Masking agent, Demasking agents
formation of complex
comparition between masking and demasking agents,
Indicators/Metal ion indicators/ Metallochromic indicators/pM indicators,
Visual Technique,PM indicators (metallochromic), Indicators of pH, Redox Indicators
Instrumental Techniques-Photometry
Potentiometry
Miscellaneous methods.
Complex titration with EDTA.
8.Isolation of pure cultures and preservation of cultures.pdf
Isolation of pure culture, its various method.
20240520 Planning a Circuit Simulator in JavaScript.pptx
Evaporation step counter work. I have done a physical experiment.
(Work in progress.)
(June 12, 2024) Webinar: Development of PET theranostics targeting the molecu...
(June 12, 2024) Webinar: Development of PET theranostics targeting the molecu...Scintica Instrumentation
Targeting Hsp90 and its pathogen Orthologs with Tethered Inhibitors as a Diagnostic and Therapeutic Strategy for cancer and infectious diseases with Dr. Timothy Haystead.Katherine Romanak - Geologic CO2 Storage.pdf
Presented at June 6-7 Texas Alliance of Groundwater Districts Business Meeting
EWOCS-I: The catalog of X-ray sources in Westerlund 1 from the Extended Weste...
Context. With a mass exceeding several 104 M⊙ and a rich and dense population of massive stars, supermassive young star clusters
represent the most massive star-forming environment that is dominated by the feedback from massive stars and gravitational interactions
among stars.
Aims. In this paper we present the Extended Westerlund 1 and 2 Open Clusters Survey (EWOCS) project, which aims to investigate
the influence of the starburst environment on the formation of stars and planets, and on the evolution of both low and high mass stars.
The primary targets of this project are Westerlund 1 and 2, the closest supermassive star clusters to the Sun.
Methods. The project is based primarily on recent observations conducted with the Chandra and JWST observatories. Specifically,
the Chandra survey of Westerlund 1 consists of 36 new ACIS-I observations, nearly co-pointed, for a total exposure time of 1 Msec.
Additionally, we included 8 archival Chandra/ACIS-S observations. This paper presents the resulting catalog of X-ray sources within
and around Westerlund 1. Sources were detected by combining various existing methods, and photon extraction and source validation
were carried out using the ACIS-Extract software.
Results. The EWOCS X-ray catalog comprises 5963 validated sources out of the 9420 initially provided to ACIS-Extract, reaching a
photon flux threshold of approximately 2 × 10−8 photons cm−2
s
−1
. The X-ray sources exhibit a highly concentrated spatial distribution,
with 1075 sources located within the central 1 arcmin. We have successfully detected X-ray emissions from 126 out of the 166 known
massive stars of the cluster, and we have collected over 71 000 photons from the magnetar CXO J164710.20-455217.
waterlessdyeingtechnolgyusing carbon dioxide chemicalspdf
The technology uses reclaimed CO₂ as the dyeing medium in a closed loop process. When pressurized, CO₂ becomes supercritical (SC-CO₂). In this state CO₂ has a very high solvent power, allowing the dye to dissolve easily.
Dernier (20)
The debris of the ‘last major merger’ is dynamically young
The debris of the ‘last major merger’ is dynamically young
ESA/ACT Science Coffee: Diego Blas - Gravitational wave detection with orbita...
ESA/ACT Science Coffee: Diego Blas - Gravitational wave detection with orbita...
Applied Science: Thermodynamics, Laws & Methodology.pdf
Applied Science: Thermodynamics, Laws & Methodology.pdf
THEMATIC APPERCEPTION TEST(TAT) cognitive abilities, creativity, and critic...
THEMATIC APPERCEPTION TEST(TAT) cognitive abilities, creativity, and critic...
Describing and Interpreting an Immersive Learning Case with the Immersion Cub...
Describing and Interpreting an Immersive Learning Case with the Immersion Cub...
Compexometric titration/Chelatorphy titration/chelating titration
Compexometric titration/Chelatorphy titration/chelating titration
8.Isolation of pure cultures and preservation of cultures.pdf
8.Isolation of pure cultures and preservation of cultures.pdf
20240520 Planning a Circuit Simulator in JavaScript.pptx
20240520 Planning a Circuit Simulator in JavaScript.pptx
(June 12, 2024) Webinar: Development of PET theranostics targeting the molecu...
(June 12, 2024) Webinar: Development of PET theranostics targeting the molecu...
EWOCS-I: The catalog of X-ray sources in Westerlund 1 from the Extended Weste...
EWOCS-I: The catalog of X-ray sources in Westerlund 1 from the Extended Weste...
waterlessdyeingtechnolgyusing carbon dioxide chemicalspdf
waterlessdyeingtechnolgyusing carbon dioxide chemicalspdf
Introduction to the reprodutive biology of damsel fly and its mechanism
- 1. Introduction to Damselflies Damselflies are delicate, winged insects known for their intricate, jewel-like colors and graceful, fluttering flight. These captivating creatures are a delight to observe in their natural habitats, offering a glimpse into the marvels of the insect world. by Amal Kishore M, CoA, Thrissur
- 2. Anatomy and Identification Slender Body Damselflies have a long, thin abdomen that helps them maneuver swiftly through the air. Delicate Wings Their wings are narrow and translucent, propelling them with a distinctive, fluttering motion. Vibrant Colors Damselflies come in a stunning array of colors, including blues, greens, reds, and metallic hues.
- 3. Habitat and Behavior 1 Freshwater Homes Damselflies thrive near ponds, streams, and other bodies of freshwater, where they can find ample food and breeding grounds. 2 Perching Patterns When at rest, damselflies often hold their wings together vertically, unlike their dragonfly cousins. 3 Agile Flyers Damselflies dart and hover with remarkable precision, making them a joy to observe in flight.
- 4. Mating Rituals 1 Courtship Male damselflies perform intricate aerial displays to attract potential mates, using their vibrant colors and agile movements. 2 Tandem Pair Once a female is receptive, the male will grasp her behind the head, forming a "tandem pair" as they fly together. 3 Egg Fertilization The female then bends her abdomen to receive the male's sperm, completing the mating process.
- 5. Egg Laying and Oviposition Underwater Eggs After mating, the female damselfly deposits her eggs directly into the water, either on aquatic plants or submerged surfaces. Careful Placement The female carefully selects the oviposition site, ensuring her eggs have the best chance of survival and development. Egg Incubation The eggs then undergo a period of incubation, with the nymphs eventually hatching and beginning their aquatic larval stage.
- 6. Nymphal Development Aquatic Nymphs Newly hatched damselfly nymphs live in the water, where they hunt for prey and grow through a series of molts. Gills and Camouflage Nymphs have external gills and are often well-camouflaged, blending in with their aquatic environment. Emergence After several weeks or months, the nymphs will emerge from the water and transform into their adult, winged form.
- 7. Emergence and Maturation Climbing The newly emerged damselfly will climb up a plant or other surface, allowing its wings to fully expand and harden. Drying As the damselfly dries, its body and wings will take on their vibrant, adult coloration. First Flight Once the transformation is complete, the damselfly will take its first flight, embarking on the next stage of its life cycle.
- 8. Conservation and Threats Habitat Loss Damselflies are vulnerable to the destruction and degradation of their freshwater habitats, which are critical for their survival. Pesticides Exposure to pesticides and other pollutants can have detrimental effects on damselfly populations. Climate Change Shifts in temperature and precipitation patterns due to climate change can disrupt the delicate balance of damselfly ecosystems. Conservation Efforts Protecting and restoring wetlands, monitoring populations, and reducing pollution are important steps to conserve damselflies.