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首页> 外文期刊>Marine ecology >Different sperm allocation strategies in two populations of the semiterrestrial crab Neohelice granulata (Brachyura, Grapsoidea, Varunidae)
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Different sperm allocation strategies in two populations of the semiterrestrial crab Neohelice granulata (Brachyura, Grapsoidea, Varunidae)

机译：不同的精子分配策略在两个陆地蟹新螺旋体种群（Brachyura，Grapsoidea，Varunidae）中

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摘要

Sperm reserves are costly to produce and so the development of different sperm allocation strategies may be advantageous. Knowledge of sperm allocation strategies is important from an evolutionary perspective because they contribute to characterize mating systems. However, population differences in sperm allocation strategies of the same species have rarely been assessed. Here, we studied the male sperm allocation strategies in two different populations of Neohelice granulata in Mar Chiquita Lagoon (MCL) and San Antonio Oeste (SAO), Argentina. We found that the quantity of ejaculate transferred by N. granulata males depended on different factors such as male size and female receptivity duration, while it was independent of female size, at both study areas. Regarding the operational sex ratio factor, the amount of ejaculate transferred depended on it in MCL but not in SAO. Thus, N.granulata males may have the capacity to regulate the quantity of ejaculate transferred based on individual factors such as their own size and female receptivity duration, and population factors such as operational sex ratio, which varies in the two populations studied.
机译：精子储备的生产成本很高，因此开发不同的精子分配策略可能是有利的。从进化的角度来看，精子分配策略的知识很重要，因为它们有助于表征交配系统。但是，很少评估相同物种的精子分配策略中的种群差异。在这里，我们研究了阿根廷Mar Chiquita泻湖（MCL）和San Antonio Oeste（SAO）的两个不同的新螺旋藻种群的雄性精子分配策略。我们发现在两个研究区域，颗粒状猪笼草的雄性转移的射精量取决于不同的因素，例如雄性大小和雌性接受时间，而与雌性大小无关。关于可操作的性别比例因素，转移的射精量取决于MCL，而不取决于SAO。因此，制粒猪（N.granulata）雄性可能有能力根据个体因素（如自身大小和雌性接受持续时间）以及人口因素（如工作性别比）来调节转移的射精量，这在所研究的两个人群中有所不同。

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