Clauss, Marcus

Hagen, R

Hatt, Jean-Michel

Heistermann, M

Kaup, F J

Pirovino, M

Steinmetz, H W

Zingg, R

ZORA

University of ZurichZurich Open Repository and ArchiveWinterthurerstr. 190CH-8057 Zurichhttp://www.zora.uzh.chYear: 2009The influence of female life history on reproduction incaptive pileated gibbons (Hylobates pileatus)Pirovino, M; Zingg, R; Hagen, R; Heistermann, M; Kaup, F J; Clauss, M; Hatt, J M;Steinmetz, H WPirovino, M; Zingg, R; Hagen, R; Heistermann, M; Kaup, F J; Clauss, M; Hatt, J M; Steinmetz, H W (2009). Theinfluence of female life history on reproduction in captive pileated gibbons (Hylobates pileatus). In: Wibbelt, G;Kretzschmar, P; Hofer, H. Proceedings of the International Conference on Diseases of Zoo and Wild Animals.Berlin, 307.Postprint available at:http://www.zora.uzh.chPosted at the Zurich Open Repository and Archive, University of Zurich.http://www.zora.uzh.chOriginally published at:Wibbelt, G; Kretzschmar, P; Hofer, H 2009. Proceedings of the International Conference on Diseases of Zoo andWild Animals. Berlin, 307.Pirovino, M; Zingg, R; Hagen, R; Heistermann, M; Kaup, F J; Clauss, M; Hatt, J M; Steinmetz, H W (2009). Theinfluence of female life history on reproduction in captive pileated gibbons (Hylobates pileatus). In: Wibbelt, G;Kretzschmar, P; Hofer, H. Proceedings of the International Conference on Diseases of Zoo and Wild Animals.Berlin, 307.Postprint available at:http://www.zora.uzh.chPosted at the Zurich Open Repository and Archive, University of Zurich.http://www.zora.uzh.chOriginally published at:Wibbelt, G; Kretzschmar, P; Hofer, H 2009. Proceedings of the International Conference on Diseases of Zoo andWild Animals. Berlin, 307.Proc Int Conf Dis Zoo Wild Anim 2009  Short abstract    307 THE INFLUENCE OF FEMALE LIFE HISTORY ON REPRODUCTION IN CAPTIVE PILEATED GIBBONS (HYLOBATES PILEATUS)   PIROVINO M1, ZINGG R2, HAGEN R3, HEISTERMANN M4, KAUP FJ4, CLAUSS M1, HATT JM1, STEINMETZ HW1  1Clinic for Zoo Animals, Exotic Pets and Wildlife, Vetsuisse Faculty, University of Zürich, 1Winterthurer-3strasse 260, 8057 Zürich, SWITZERLAND; mpirovino@vetclinics.uzh.ch, 3hsteinmetz@vetclinics.uzh.ch. 2Zurich Zoo, Zürichbergstrasse 221, 8044 Zurich, SWITZERLAND 3Division of Diagnostic Imaging and Radio-Oncology, Vetsuisse Faculty, University of Zürich, 3Winter-3thurerstrasse 268, 8057 Zürich, SWITZERLAND 4German Primate Center, Kellnerweg 4, 37077 Göttingen, GERMANY   Pileated gibbons (Hylobates pileatus) are rated as on high risk of extinction in the wild in the medium-term future (INTERNATIONAL-CONSERVATION-UNION, 2008). The current worldwide studbook lists 107 animals housed at 21 different institutions (ZINGG, 2008). Although most animals are housed in pairs, the major part of the population is not reproductively active. Without improvements in reproduction, the captive population will become overaged and is threatened to become extinct in the near future. The goal of the current project was to identify problems in reproduction based on the current studbook data. Twenty nine percent of possible breeding females were reproductively active and produced 81 offspring during the last 30 years. In the last 15 years captive pileated gibbons had a noticeable skewed offspring sex ratio that favoured males (26,16). In addition, only 50.4 % newborns reached adulthood and were available for future breeding purposes. Captive born mothers significantly better raised offspring than wild born mothers (p < 0.01). Especially during the first 8 years in captivity wild born mothers had significantly lower survival rate in their offspring in comparison to wild born mothers with over 8 years experience in captivity (p = 0.006). Further preliminary studies did not indicate any pathological alterations in the female or male reproductive tract. The current study has shown that the female life history has a great influence on the poor reproductive success in captive pileated gibbons.    References  INTERNATIONAL-CONSERVATION-UNION (2008): The IUCN Red List of Threatened Species, www. iucnredlist.org, (accessed 6.1.2008).  ZINGG R (2008): International studbook for pileated gibbons (Hylobates pileatus), Apple Valley, MN: International Species Information System.   

The influence of female life history on reproduction in captive pileated gibbons (Hylobates pileatus)

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The influence of female life history on reproduction in captive pileated gibbons (Hylobates pileatus)

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