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首页> 外文期刊>Journal of Experimental Marine Biology and Ecology >Paternity re-visited in a recovering population of Caribbean leatherback turtles (Dermochelys coriacea)
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Paternity re-visited in a recovering population of Caribbean leatherback turtles (Dermochelys coriacea)

机译：在恢复的加勒比棱皮海龟（Dermochelys coriacea）种群中再次进行亲子鉴定。

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Sea turtles in general are promiscuous breeders, but previous leatherback paternity studies found only a very low level of multiple paternity or none at all. Three highly polymorphic microsatellite markers (Dc99, Cc117, and Ei8) were used to investigate the paternity of a recovering population of leatherback turtles nesting at Playa Gandoca in Costa Rica, which is part of the Atlantic Costa Rican leatherback nesting population. The aim of this study was to (i) detect multiple paternity, (ii) compare the results to previous studies in the same and different nesting populations, (iii) consider the possibility of sperm storage, (iv) explore the possibility of successful inter-nesting mating taking place, and (v) determine the effect of small population size on mating patterns. Tissue samples from females and hatchlings were collected from one to three consecutive clutches (35 clutches total) of 18 nesting females included in the assay with an average sampling effort of 21.91% of offspring per clutch. Evidence of multiple paternity was found in four out of 18 females (22.22%), which had mated with two to three different males. The results from this study indicate that multiple paternity is more common than previously observed for the Atlantic Costa Rican leatherback nesting population. The analyses of successive clutches from the multiply mated females showed that paternal contribution varies between successive clutches and "new" fathers in consecutive clutches suggest the possibility of successful inter-nesting mating. (C) 2015 Elsevier B.V. All rights reserved.
机译：一般而言，海龟是杂种繁殖者，但以前的棱皮家庭亲子关系研究发现多重亲子关系的水平很低，甚至根本没有。使用三个高度多态的微卫星标记（Dc99，Cc117和Ei8）调查了在哥斯达黎加Playa Gandoca筑巢的recover皮海龟的恢复种群的父系，这是大西洋哥斯达黎加棱皮leather的嵌套种群的一部分。这项研究的目的是（i）检测多个亲子关系，（ii）将结果与以前在相同和不同筑巢种群中的研究进行比较，（iii）考虑精子储存的可能性，（iv）探索成功进行精子间育种的可能性。嵌套交配，以及（v）确定人口较少对交配方式的影响。从化验中包括的18个嵌套雌性的1到3个连续离合器（总共35个离合器）中收集雌性和孵化的组织样本，每个离合器的平均后代采样量为21.91％。在18位女性中，有4位（22.22％）发现了多父权的证据，他们与2至3个不同的男性交配。这项研究的结果表明，比起以前在大西洋哥斯达黎加棱皮海龟筑巢种群中观察到的多重亲子关系更为普遍。对多次交配雌性的连续离合器的分析表明，父系贡献在连续离合器之间变化，而连续离合器中的“新”父亲则暗示了成功进行相互嵌套交配的可能性。 （C）2015 Elsevier B.V.保留所有权利。

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