Could sexually experienced Gorillas Gorilla gorilla gorilla help hand-reared Gorillas to breed successfully?
Version of Record online: 28 JAN 2011
© 2011 The Authors. International Zoo Yearbook © 2011 The Zoological Society of London
International Zoo Yearbook
Volume 45, Issue 1, pages 237–249, January 2011
How to Cite
ABELLÓ, Ma. T., BLASCO, A. and COLELL, M. (2011), Could sexually experienced Gorillas Gorilla gorilla gorilla help hand-reared Gorillas to breed successfully?. International Zoo Yearbook, 45: 237–249. doi: 10.1111/j.1748-1090.2011.00134.x
- Issue online: 29 MAR 2011
- Version of Record online: 28 JAN 2011
- Manuscript submitted 5 June 2009; revised 8 April 2010; accepted 21 December 2010
- observations of breeding;
- social behaviour
To maintain a self-sustaining European Endangered Species Programme (EEP) population of Gorillas Gorilla gorilla gorilla, it is necessary that as many individuals as possible contribute their genes to the population. It is believed that hand-rearing may prevent the development of a good repertoire of natural social behaviours that would facilitate successful breeding when individuals reach sexual maturity. Between 1980 and 2004, 464 Gorilla births resulted in 117 individuals [63.54 (♂.♀)] being hand-reared. In this review, we analyse information gathered from a questionnaire survey, augmented with data from the international studbook and other publications, to identify the conditions that contribute to breeding success. Hand-reared ♀♀ should initially be introduced into socially competent groups that breed (so they can observe breeding by conspecifics) and, in addition, be introduced to an experienced breeding ♂. Similarly, hand-reared ♂♂ should initially be placed in socially competent groups and, in addition, should be introduced to mother-reared adult ♀♀ that, where possible, have also had previous breeding experience. Although the receptor group and the personality of hand-reared individuals need to be considered before making decisions about introduction to conspecifics, in order to increase the genetic contribution that hand-reared Gorillas make to the EEP population, factors recorded in this article may provide guidance on how to improve captive breeding for the conservation of this species.