Limited genetic diversity in the critically endangered Mexican howler monkey (Alouatta palliata mexicana) in the Selva Zoque, Mexico
Limited genetic diversity in the critically endangered Mexican howler monkey (Alouatta palliata mexicana) in the Selva Zoque, Mexico
复制标题
DOI：
10.1007/s10329-013-0399-6
复制
发表时间：
2014-04-01
期刊：
影响因子：
1.7
通讯作者：
Knapp, Leslie A.
中科院分区：
文献类型：
--
作者：
Dunn, Jacob C.;Shedden-Gonzalez, Aralisa;Knapp, Leslie A.
墨西哥咆哮猴(Alouatta Palliata Miciana)是一种极度濒危的灵长类动物，是墨西哥的古特有物种。然而，尽管遗传数据对其管理和保护具有潜在的意义，但还没有对该亚种的种群遗传学研究。为了检测墨西哥冷杉仅存的关键森林保护区--南方大草原的遗传多样性，我们从45个个体中扩增了全长线粒体控制区序列(1100bp)，发现了7个非常相似的单倍型。与其他新热带灵长类动物相比，单倍型多样性(h=0.486)和核苷酸多样性(pi=0.0007)极低。用中立性检验评价种群效应(田岛氏D=-1.48，p=0.0 5；傅氏F-S=-3.33，p=0.0 2)和错配分布(平方差和=0.006，p=0.38；粗糙度指数=0.12，p=0.33)符合该分类群最近温和的种群扩张，遗传多样性似乎是历史上最低的。未来的研究应该使用线粒体和核标记的组合来充分评估遗传多样性，并更好地了解墨西哥农杆菌的人口学历史。这些研究应在其整个地理范围内进行，以便评估人口结构和确定保护管理单位。由于墨西哥文昌鱼的分布和种群规模有限，未来的保护策略可能需要考虑遗传管理。然而，迫切需要对亚种的种群遗传学有更详细的了解，以最大限度地发挥这些策略的保护作用。
The Mexican howler monkey (Alouatta palliata mexicana) is a critically endangered primate, which is paleoendemic to Mexico. However, despite the potential significance of genetic data for its management and conservation, there have been no population genetic studies of this subspecies. To examine genetic diversity in the key remaining forest refuge for A. p. mexicana, the Selva Zoque, we amplified full-length mitochondrial control region sequences (1,100 bp) from 45 individuals and found 7 very similar haplotypes. Haplotype diversity (h = 0.486) and nucleotide diversity (pi = 0.0007) were extremely low compared to other Neotropical primates. Neutrality tests, used to evaluate demographic effects (Tajima's D = -1.48, p = 0.05; Fu's F-s = -3.33, p = 0.02), and mismatch distribution (sum of squares deviation = 0.006, p = 0.38; raggedness index = 0.12, p = 0.33) were consistent with a recent and mild population expansion and genetic diversity appears to be historically low in this taxon. Future studies should use a combination of mitochondrial and nuclear markers to fully evaluate genetic diversity and to better understand demographic history in A. p. mexicana. These studies should be undertaken throughout its geographic range in order to evaluate population structure and identify management units for conservation. Due to the limited distribution and population size of A. p. mexicana, future conservation strategies may need to consider genetic management. However, a more detailed knowledge of the population genetics of the subspecies is urgently recommended to maximise the conservation impact of these strategies.