Nest and maternal origin can influence morphology and locomotor performance of hatchling green turtles (Chelonia mydas) incubated in field nests
Nest and maternal origin can influence morphology and locomotor performance of hatchling green turtles (Chelonia mydas) incubated in field nests
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DOI：
10.1007/s00227-012-2070-y
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发表时间：
2013-01-01
期刊：
影响因子：
2.4
通讯作者：
Shibata, Yui
中科院分区：
文献类型：
--
作者：
Booth, David T.;Feeney, Roisin;Shibata, Yui
在许多涉及爬行动物卵孵化的实验室实验中，卵的母体来源和孵化环境（巢效应）都被证明会影响幼体的表型。虽然不同的孵化表型已被报道，从自然巢，母亲的起源和巢孵化表型在自然巢的单独影响尚未得到证明，因为在自然巢的两个效果是相互混淆。在这里，我们使用一个分离离合器设计实验分离巢效应从母亲的起源影响在外地巢的绿色海龟（Chelonia mydas）。我们发现母亲的起源和巢影响孵化的形态和运动性能在一些，但不是所有的领域巢。用卵块（母体起源效应）和巢温（巢效应）多元回归分析发现，母体来源对幼体质量和背甲大小的影响大于巢温，但对自翻时间、自翻倾向、游泳前30 min的游泳推力、在游泳的前30分钟内的功率冲程率。
In numerous laboratory experiments involving the incubation of reptile eggs, both the maternal origin of eggs and the incubating environment (nest effect) have been demonstrated to influence hatchling phenotype. Although different hatchling phenotypes have been reported from natural nests, the separate effects of maternal origin and nest on hatchling phenotype in natural nests have not been demonstrated because in natural nests the two effects are confounded with each other. Here, we use a split clutch design to experimentally separate nest effects from maternal origin effects in field nests of green turtles (Chelonia mydas). We found both maternal origin and nest to influence hatchling morphology and locomotor performance in some but not all field nests. By using egg mass (maternal origin effect) and nest temperature (nest effect) in multiple regression analysis, we found maternal origin had a greater influence than nest temperature on the morphological attributes of hatchling mass and carapace size, but nest temperature had a greater influence than maternal origin on the performance attributes of self-righting time, self-righting propensity, swim thrust during the first 30 min of swimming, and power stroke rate during the first 30 min of swimming.