Genetic Diversity, Population Size, and Conservation of the Critically Endangered Perrier’s Sifaka (Propithecus perrieri)
Genetic Diversity, Population Size, and Conservation of the Critically Endangered Perrier’s Sifaka (Propithecus perrieri)
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DOI：
10.1007/s10764-015-9881-x
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发表时间：
2015-12
影响因子：
2.5
通讯作者：
Jordi Salmona;Helena Teixeira;Emmanuel Rasolondraibe;Isa Aleixo-Pais;Célia Kun-Rodrigues;Ando N Rakotonanahary;Fabien Jan;C. Rabarivola;J. Zaonarivelo;N. Andriaholinirina;L. Chikhi
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文献类型：
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作者：
Jordi Salmona;Helena Teixeira;Emmanuel Rasolondraibe;Isa Aleixo-Pais;Célia Kun-Rodrigues;Ando N Rakotonanahary;Fabien Jan;C. Rabarivola;J. Zaonarivelo;N. Andriaholinirina;L. Chikhi
遗传数据可以与生态数据相结合，研究物种的人口统计历史，识别影响迁徙模式的景观特征，并指导保护工作。佩里耶狐猴 (Propithecus perrieri) 是一种极度濒危、稀有且难以捉摸的群居狐猴，生活在非常狭窄、支离破碎的环境中。为了评估栖息地丧失和破碎化对 Perrier 西法卡种群遗传多样性的影响，我们检查了 24 个微卫星标记，这些标记对对应 42 个个体的 67 个样本进行了基因分型。 Perrier 的 sifaka 显示出当前有效种群规模较低（约 52-105）和强烈的杂合性过剩，表明历史上种群规模较大但正在减少。此外，我们还发现了一种距离隔离的模式，这是连续栖息地的典型特征，这表明西法卡猿在不久前仍然能够穿越森林碎片之间的草原。我们的研究呼吁制定一个统一的保护计划，涵盖该物种仍然存在的两个保护区，即使不是其过去分布的整个区域。进一步研究推断巴黎水蛇过去的人口历史可能会证实种群数量的下降并揭示其潜在原因。
Genetic data can be combined with ecological data to study the demographic history of a species, identify landscape features that influence migration patterns, and guide conservation efforts. Perrier’s sifaka (Propithecus perrieri) is a Critically Endangered, rare, and elusive social lemur living in a very restricted, fragmented landscape. To assess the effect of habitat loss and fragmentation on the genetic diversity of the Perrier’s sifaka population we examined 24 microsatellite markers genotyped for 67 samples corresponding to 42 individuals. Perrier’s sifaka shows a low current effective population size (ca.52–105) and a strong heterozygosity excess, suggesting a historically large but dwindling population. Moreover, we identified a pattern of isolation by distance, typical of continuous habitat, suggesting that sifakas were still able to cross the grasslands between forest fragments in the recent past. Our study calls for a unified conservation plan covering the two protected areas where the species is still present, if not the whole area of its past distribution. Further studies inferring the past demographic history of Perrier’s sifaka may confirm the population decline and shed light on its potential causes.