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首页> 外文期刊>Journal of Experimental Marine Biology and Ecology >High frequency of multiple paternity in a solitary population of olive ridley sea turtles in Honduras
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High frequency of multiple paternity in a solitary population of olive ridley sea turtles in Honduras

机译：洪都拉斯一个孤独的橄榄色海龟海龟中的多重亲子关系发生率很高

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Females of all seven living species of sea turtles are known to be polyandrous and show multiple paternity. The frequency of multiple paternity varies among species, and among populations of the same species. In the olive ridley sea turtle (Lepidochelys olivacea), multiple paternity levels correlate with the abundance of individuals in the mating system, being much higher in arribada rookeries than in solitary nesting sites. We used two highly polymorphic microsatellite markers (Cm84 and Or1) to assess the level of multiple paternity in an olive ridley solitary population nesting in the Gulf of Fonseca, Honduras. We found evidence of multiple paternity in 6 out of 8 clutches (75%), with a minimum number of two fathers in four clutches, and a minimum of three in the remaining two clutches. This high level of multiple paternity in a small solitary population suggests that some of the females nesting in Honduras may be coming from proximal Nicaraguan arribada nesting beaches. Historical evidences and recent satellite telemetry data support this hypothesis. In addition, we show that multiple paternity studies can be effectively performed in the absence of maternal samples, and that pooled DNA samples can be used with results comparable to individual hatchling sampling in multiple paternity analyses. (C) 2014 Elsevier B.V. All rights reserved.
机译：已知所有七个活海龟物种中的雌性都是一夫多妻制，并表现出多重亲子关系。多个亲子关系的发生频率在物种之间以及同一物种的种群之间有所不同。在橄榄色ridley海龟（Lepidochelys olivacea）中，多重亲子关系水平与交配系统中个体的丰富程度相关，在arribada种群中比在单独的巢穴中要高得多。我们使用了两个高度多态性的微卫星标记（Cm84和Or1）来评估洪都拉斯丰塞卡湾橄榄ridley单居巢中的多重亲子关系水平。我们发现有8个离合器中有6个（75％）有多重父亲身份，四个离合器中最少有两个父亲，其余两个离合器中最少有三个父亲。一小部分单身人口中的这种较高的多重亲子关系表明，在洪都拉斯筑巢的某些雌性可能来自尼加拉瓜附近的arribada筑巢海滩。历史证据和最近的卫星遥测数据都支持这一假设。此外，我们表明，在没有孕产妇样品的情况下，可以有效地进行多个亲子关系研究，并且可以使用合并的DNA样品，其结果可与多个亲子关系分析中的个体孵化采样相当。 （C）2014 Elsevier B.V.保留所有权利。

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