Special Session on Ostriches : ex-situ conservation of the North African Ostrich
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Presented during the 17h Annual Sahelo-Saharan Interest Group Meeting organized by the NGO Sahara Conservation Fund in Senegal, from 4 to 6 May 2017. The Sahara Conservation Fund (SCF) gathers every year about a hundred people who are interested in the field of Sahelo-Saharan species conservation.
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Special Session on Ostriches : ex-situ conservation of the North African Ostrich
- 1. 17th Annual Sahelo-Saharan Interest Group Meeting 2 days of talks on biodiversity conservation in the Sahara and in the Sahel Special Session on Ostriches : Ex-situ conservation of the North African Ostrich Maren FRERKING, Conservation Biologist – Erlebnis Zoo, Hannover May 4 – 6, 2017
- 2. Ex situ conservation of the North African Ostrich – an up-date on the EEP
- 3. The EEP • established in autumn 2011 • import of 24 hatching eggs from Morocco in 2011, successfull incubation of 17 chicks • pairing of hatched birds according to kinship
- 4. Origin of the EEP birds Souss Massa: 33.800 ha Rokein: 2.000 ha Ostriches in Souss Massa • originally from Chad • introduction of 37 birds in 1996 • 10 birds in 1999 • now approx. 150 birds
- 5. Typical nest
- 6. Genetics Struthio c. camelus Analysis done by: Smithsonian Institution, USA IPHC Strasbourg, France
- 7. The EEP end of 2016 Sex. Mature (hatched 2011) 1.1 Hamburg/Germany 1.1 Gelsenkirchen/Germany 1.1 Hannover/Germany 1.0 Paignton/Great Britain Young Adults (h. 2014/2015) 0.1 Paignton/Great Britain 2.2 Alphen/Netherlands 2.1 Leipzig/Germany Juveniles (h. 2016) 3.0 Kronberg/Germany 0.2 Paris/France 1.1 Sigean/France 0.2 Valencia/Spain
- 8. Founders Mütter He3/4? He4 He3 He4 He 4 He1 He4 He4 He1 He3 He2 He3 He2 He3 He3 He3 Väter 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 OSM 106 108 108 112 108 116 106 116 112 116 108 112 106 116 112 116 108 116 108 112 108 116 108 116 112 116 List011 112 114 114 116 112 114 116 132 114 116 114 116 114 116 114 116 114 116 116 116 List005 206 206 196 208 196 208 196 208 196 206 200 206 206 206 200 206 196 200 196 206 196 206 208 208 196 206 196 206 196 208 List006 112 114 110 112 112 114 108 114 112 114 108 114 108 112 List010 134 136 134 134 134 134 134 134 136 136 136 136 136 136 List001 192 204 192 206 206 210 192 206 192 208 204 208 192 204 206 210 204 208 200 206 206 210 208 212 192 206 192 206 192 206 List004 246 274 270 274 264 274 260 270 264 274 260 266 246 260 270 274 260 260 260 274 258 270 260 264 260 260 264 274 264 274 260 264 OSM2 147 169 153 169 153 153 153 153 153 153 153 169 153 153 153 153 147 153 153 169 147 169 153 153 147 169 147 169 147 169 List009 276 276 262 278 262 276 262 276 262 278 238 262 262 278 278 278 262 278 262 276 262 262 262 276 276 276 262 276 262 276 262 278 OSM7 186 194 196 196 186 194 186 194 194 196 198 202 168 194 196 196 186 202 186 196 196 196 186 194 186 196 186 196 186 196 194 196 Assumption: 1 male, 3 females
- 9. Egg Imports 2010 import of 24 eggs, hatch of 8 birds, loss of all birds (2 weeks) 2012 cancelled 2013 cancelled 2014 cancelled 2015 import of 24 eggs, hatch of 10 birds, loss of all birds (3 weeks)
- 10. Egg Imports 2010/15 Failure – Possible reasons • nutrition of the parent birds • conditions in the field (min. temp. down to 3 °C) • age of the eggs • transport • incubation conditions • (desinfection [PAA], infection)
- 11. Import 2017 – Winter 16/17 at Souss Massa Sufficient rain / favourable temperatures rich vegetation several nests January 2017: Very cold weather (min temp. down to 2 °C) All nests deserted at “collect. day” 23rd of January 2017 collection nest: last eggs laid 12th of Jan.
- 12. Import January 2017 75 eggs
- 13. Import January 2017 Candeling Marking of air chamber Desinfection Labeling
- 14. Sealing by official veterinarianPacking into 3 boxes
- 15. Incubation Incubator Temp. 36.6 °C Humidity 20 – 27 % (23 %) Position vertically Turning 10 times daily, 90° Hatcher Temp. 36.0 °C Humidity 47 % (Hatcher I) 61 % (Hatcher II) Position horizontally Hatching rates (fertile eggs): 73 % in 2011 (Souss Massa) 66 and 89 % in 2015 (Hannover) 52 % in 2016 (Hannover)
- 16. Results 2017 Infertile eggs 5 Early embryonic death 11 Death around day 35 2 Death in hatching 1 Hatched chicks (day 44 to 46) March 11 to 13 5
- 17. Offspring 2017 Hatched 11th to 13th of March Next steps: succesful rearing – genetics – finding suitable holdings
- 18. Education / Awarenss / Fundraising © dpa 2016
- 19. Thank you !