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Similaire à Save the Frogs Day, Professor Hero, Griffith University 2012
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Save the Frogs Day, Professor Hero, Griffith University 2012
- 1. Global Amphibian Crisis Can we stop the disappearance of frogs ? Assoc. Professor Jean-Marc Hero
- 2. ,000 amphibian species re threatened ith extinction Litoria chloris
- 3. 200 amphibian species extinct since 1979
- 4. The first frog in the world to go extinct in recent times. MISSING since Jan. 1979 Photo by Owen Kelly Taudactylus diurnus Southern Day Frog
- 5. The second frog in the world to go extinct in recent times. MISSING since Sept. 1981 Photo by Owen Kelly Southern Gastric Brooding Frog Rheobatrachus silus
- 6. Golden Toad Bufo periglenes Costa Rica MISSING since 1989
- 7. DISAPPEARED DECLINED Mountain Mist-frog Waterfall Frog Armoured Mist-frog Australian Lace-lid Sharp-snouted Day-frog Common Mist-frog Northern Tinker-frog Northern Gastric- Eungella Day-frog brooding Frog 5 species Kroombit Tinkerfrog EXTINCT and Southern Gastric- Giant Barred-frog brooding Frog Fleay’s Barred-frog 6 species on Southern Day-frog Brisbane Cascade Tree-frog the brink in Eastern Peppered Tree-frog Stuttering Frog Green & Golden Bell-frog Australia Booroolong Frog Corroboree Frog Northern Corroboree Frog Yellow-spotted Tree-frog Philoria frosti Alpine Whistling Treefrog Spotted Treefrog
- 8. In Australia, at least 5 amphibian species are now considered EXTINCT ! Declines are continuing ... Extinction is forever.
- 9. Global Amphibian Declines Rapid, unexplained population declines have occurred worldwide Richards et al. 1993, Pounds et al. 1997 Globally: • 32.5% of 6,092 species threatened • 122 species have almost, or completely disappeared since 1980 (Stuart et al. 2004) Australia: • 50 threatened species / 320 Hero et al. 2005 5 extinctions since 1979, many declines • Many threatened frogs live in relatively pristine, protected areas: high altitude stream-dwellers
- 10. Possible causes of amphibian declines: Invasive species + Over-harvesting + Habitat alteration + Contaminants + Global change + 2009 Emerging Infectious Disease = Synergistic effects !
- 11. ? Increased UV radiation ? Species specific Herbicides & Pesticides resistance to pathogens ? Global Warming ? High ? IMMUNODEPRESSION ? Altitude ? FUNGAL PATHOGEN ? Aquatic Life History Stage Small clutch Size Restricted Geographic
- 12. Frogs have been around 250 million years
- 13. Frogs are an integral part of the food web Humans use frogs in medicinal research Frogs are bio-indicators
- 14. Frogs are cool!
- 15. Frog Research at Griffith providing information needed to support socio-political action • Habitat restoration projects in Numinbah Valley. • Identify threatened frogs and their habitats. • Ecology of the frog disease Chytridiomycosis
- 16. Conservation Physiology Frogs infected with chytridridiomycosis have significantly higher stress hormone levels than non-infected frogs. Stress Level Chytrid Kindermann, Narayan & Hero 2012 Comparative Biochemistry and Physiology
- 17. Frog Research at Griffith providing information needed to save frogs • Examining the Potential Impacts of Climate Change on threatened amphibians. • Initiate captive husbandry for threatened species. • Establish long-term ecological research sites to monitor the impacts of disturbance and climate change.
- 18. Conservation Physiology Frogs at higher elevation have significantly higher stress hormone levels than frogs at low elevation. Stress Level Altitude
- 19. Frog Research at Griffith providing information needed to save frogs Initiate captive husbandry for threatened species.
- 20. Griffith University – Wildlife Currumbin Sanctuary Husbandry Project Six Taudactylus species in Eastern Australia T. diurnus EXTINCT T. acutirostris disappeared (last seen in 1994, Critically Endangered) T. rheophilus is on the brink of extinction (last heard 2005, Critically Endangered) T. eungellensis and T. pleione are Critically Endangered T. Liemi is the only species found easily listed as Near Threatened
- 21. Griffith University – Currumbin Wildlife Sanctuary Husbandry Project Griffith University and Currumbin Wildlife Sanctuary (with start up funding from Dreamworld) have teamed up to initiate a captive husbandry program for the Taudactylus genus.
- 24. It’s up to you to SAVE THE FROGS! We are but one brief generation in the long march of time; the future is not ours to erase David Suzuki 1993 Osteocephalus spp, Reserva Florestal Adolfo Ducke, Amazonas Brazil
- 25. Global Amphibian Declines What can we do to stop them? • Stop habitat destruction • Stop fish-stocking • Mitigate global warming. • Prevent future panzootics by curbing the importation and movement of amphibians (both within and among continents) • Support research to inform you and politicians
- 26. HOW YOU CAN HELP protect local wetlands Stop the destruction of wetland and stream habitats Flood mitigation destroys habitat = Restore stream habitats Adopt a pond/stream in your area and monitor the frog activity
- 27. HOW YOU CAN HELP Create local wetlands LEARN ABOUT THE HABITATS OF LOCAL FROGS IN YOUR AREA and RECREATE IT Create ephemeral ponds: to attract Green tree frogs Permanent ponds need small native fish for mosquito control Beware: Cane Toads are a big fan of permanent ponds and they love fish!
- 29. HOW YOU CAN HELP Reduce the use of chemicals LEARN about Herbicides & pesticides, and their impacts on frogs
- 30. Spread the word about the amphibian extinction crisis!
- 31. HOW YOU CAN HELP lobby politicians Be Active Solutions are socio-political, not scientific ! Ask politicians and wildlife departments what they are doing to solve the problem. Lobby all levels of government to: - fund research - mitigate threats to amphibians
- 32. Vote for the environment
- 33. What will happen if the frogs disappear ?
- 34. Healthy Frogs, Healthy Humans "You must be the change you wish to see in the world."
- 35. When the frogs stop singing the planet will die ! “ When the singing stops ” by Di Morrissey
- 37. Keep Frogging ! Thanks for listening Any Questions ?
Notes de l'éditeur
- Southern Orange-eyed treefrogs (Litoria chloris) – Natural Bridge, Southeast Queensland, Australia
- Australian Lacelid (Nyctimistes dayi) – Tully Gorge, North Queensland, Australia
- --“About 15 yrs ago, herpetologists began noticing that there were rapid… --1/3 as compared to 12% of birds and 23% of mammals. --Before last sentence: what is disturbing is that…
- For instance perhaps a certain pesticide won’t kill a frog, and perhaps a certain disease won’t but maybe the pesticide reduces the amphibian immune response to the point that the disease can kill the frog. We know very little about the ways in which these causative agents interact with each other.
- Eastern Sedge Frog (Litoria fallax) – Green Mountains, Southeast Queensland, Australia
- Stony Creek Frog – (Litoria jungguy) Mossman Gorge, North Queensland, Australia
- Emerald-spotted Treefrog (Litoria peronii) – Springbrook NP, Southeast Queensland, Australia
- Osteocephalus , Reserva Florestal Adolfo Ducke, Amazonas Brazil