Kumar Arun, Rai Upashna, Roka Bhupen, Jha Alankar K, Reddy P Anuradha
CSIR-Centre for Cellular and Molecular Biology, Uppal Road, Hyderabad, 500 007 India.
Padmaja Naidu Himalayan Zoological Park, Darjeeling, 734101 India.
Springerplus. 2016 Oct 7;5(1):1750. doi: 10.1186/s40064-016-3437-1. eCollection 2016.
Red panda is threatened across its range by detrimental human activities and rapid habitat changes necessitating captive breeding programs in various zoos globally to save this flagship species from extinction. One of the ultimate aims of ex situ conservation is reintroduction of endangered animals into their natural habitats while maintaining 90 % of the founder genetic diversity. Advances in molecular genetics and microsatellite genotyping techniques make it possible to accurately estimate genetic diversity of captive animals of unknown ancestry. Here we assess genetic diversity of the red panda population in Padmaja Naidu Himalayan Zoological Park, Darjeeling, which plays a pivotal role in ex situ conservation of red panda in India. We generated microsatellite genotypes of fifteen red pandas with a set of fourteen loci. This population is genetically diverse with 68 % observed heterozygosity (H) and mean inbreeding (F) coefficient of 0.05. However population viability analysis reveals that this population has a very low survival probability (<2 %) and will rapidly loose its genetic diversity to 37 % mainly due to small population size and skewed male-biased sex ratio. Regular supplementation with a pair of adult individuals every five years will increase survival probability and genetic diversity to 99 and 61 % respectively and will also support future harvesting of individuals for reintroduction into the wild and exchange with other zoos.
小熊猫在其整个分布范围内受到有害人类活动和快速栖息地变化的威胁,这使得全球各地的动物园都需要开展圈养繁殖计划,以拯救这一旗舰物种免于灭绝。迁地保护的最终目标之一是将濒危动物重新引入其自然栖息地,同时保持90%的奠基者遗传多样性。分子遗传学和微卫星基因分型技术的进步使得准确估计未知血统圈养动物的遗传多样性成为可能。在此,我们评估了位于大吉岭的帕德玛贾·奈杜喜马拉雅动物园内小熊猫种群的遗传多样性,该动物园在印度小熊猫的迁地保护中发挥着关键作用。我们用一组14个位点生成了15只小熊猫的微卫星基因型。该种群具有遗传多样性,观察到的杂合度(H)为68%,平均近交(F)系数为0.05。然而,种群生存力分析表明,该种群的生存概率非常低(<2%),并且由于种群规模小和雄性偏多的性别比例失衡,其遗传多样性将迅速丧失至37%。每五年定期补充一对成年个体将分别使生存概率和遗传多样性提高到99%和61%,还将支持未来捕获个体以重新引入野外并与其他动物园进行交换。