Milián-García Yoamel, Jensen Evelyn L, Madsen Jeanette, Álvarez Alonso Suleiky, Serrano Rodríguez Aryamne, Espinosa López Georgina, Russello Michael A
From the Facultad de Biología, Universidad de La Habana, Calle 25 # 455 entre J e I, Plaza Vedado, Código Postal 10400, Ciudad de La Habana, Cuba (Milián-García and Espinosa López); the Department of Biology, University of British Columbia, Okanagan Campus, Kelowna, British Columbia, Canada (Milián-García, Jensen, Madsen, and Russello); and the Empresa Nacional para la Protección de la Flora y la Fauna, Miramar, Ciudad de La Habana, Cuba (Álvarez Alonso and Serrano Rodríguez).
J Hered. 2015;106 Suppl 1:573-9. doi: 10.1093/jhered/esv012.
Captive breeding is a widespread conservation strategy, yet such programs rarely include empirical genetic data for assessing management assumptions and meeting conservation goals. Cuban Amazon parrots (Amazona leucocephala) are considered vulnerable, and multiple on-island captive populations have been established from wild-caught and confiscated individuals of unknown ancestry. Here, we used mitochondrial haplotypic and nuclear genotypic data at 9 microsatellite loci to quantify the extent and distribution of genetic variation within and among captive populations in Zapata Swamp and Managua, Cuba, and to estimate kinship among breeders (n = 88). Using Bayesian clustering analysis, we detected 2 distinct clusters within the Zapata population, one of which was shared with Managua. Individuals from the cluster unique to Zapata possessed mitochondrial haplotypes with affinities to Cuban subspecies (A. l. leucocephala, A. l. palmarum); the shared cluster was similar, but also included haplotypes closely related to the subspecies restricted to Cayman Brac (A. l. hesterna). Overall mean kinship was low within each captive population (-0.026 to -0.012), with 19 and 11 recommended breeding pairs in Zapata and Managua, respectively, ranked according to mean kinship and informed by molecular sexing. Our results highlight the importance of understanding population history within ex situ management programs, while providing genetic information to directly inform Cuban parrot conservation.
圈养繁殖是一种广泛应用的保护策略,但此类项目很少包含用于评估管理假设和实现保护目标的实证遗传数据。古巴亚马逊鹦鹉(Amazona leucocephala)被认为是易危物种,多个岛上的圈养种群是由来源不明的野生捕获和没收个体建立起来的。在这里,我们利用线粒体单倍型和9个微卫星位点的核基因型数据,来量化古巴萨帕塔沼泽和马那瓜圈养种群内部以及种群之间遗传变异的程度和分布,并估计繁殖者(n = 88)之间的亲缘关系。通过贝叶斯聚类分析,我们在萨帕塔种群中检测到2个不同的聚类,其中一个与马那瓜种群共有。萨帕塔种群中特有的聚类个体拥有与古巴亚种(A. l. leucocephala、A. l. palmarum)具有亲缘关系的线粒体单倍型;共有聚类与之相似,但也包括与开曼布拉克岛特有的亚种(A. l. hesterna)密切相关的单倍型。每个圈养种群的总体平均亲缘关系较低(-0.026至-0.012),根据平均亲缘关系并结合分子性别鉴定,分别在萨帕塔和马那瓜推荐了19对和11对繁殖对。我们的结果凸显了在迁地管理项目中了解种群历史的重要性,同时提供了遗传信息以直接指导古巴鹦鹉的保护工作。