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首页> 外文期刊>ICES Journal of Marine Science >Mate choice in temperate and tropical spiny lobsters with contrasting reproductive systems
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Mate choice in temperate and tropical spiny lobsters with contrasting reproductive systems

机译：温带和热带刺龙虾的生殖系统对比

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摘要

Sperm limitation of reproductive success is common in decapod crustaceans, favouring mating systems in which females compete for large males of high reproductive value. We investigated these phenomena in two species of spiny lobsters-one temperate, one tropical-with contrasting reproductive systems: the Southern Rock Lobster (Jasus edwardsii) and the Caribbean Spiny Lobster (Panulirus argus). We hypothesized that female mate selection should be more pronounced in the temperate J. edwardsii than in the tropical P. argus because J. edwardsii matures later, has a shorter mating season, and produces just one clutch of eggs per year that benefit from significant maternal investment of resources. As hypothesized, experiments conducted in large mesocosms revealed that female J. edwardsii cohabited with large males more often than expected by chance during their receptive period, but not at other times. Large male J. edwardsii cohabited in dens with the largest unmated females, whereas small males exhibited no mate size preference. In contrast, the proportion of female and male P. argus that co-occupied dens with the opposite sex was no more than expected by chance. Cohabitation patterns in the wild supported these laboratory findings for both species. Our results demonstrate the tight connection between contrasting reproductive strategies and the specificity of mate choice in spiny lobsters that are consistent with predictions based on environmental seasonality in temperate vs. tropical ecosystems.
机译：十足纲甲壳类动物普遍限制精子繁殖，这有利于交配系统，在该交配系统中，雌性竞争具有高繁殖价值的大型雄性。我们在两种带刺的龙虾中研究了这些现象，一种是温带的，一种是热带的，它们的生殖系统相反：南部的龙虾（Jasus edwardsii）和加勒比的多刺龙虾（Panulirus argus）。我们假设温带J. edwardsii的雌性配偶选择应该比热带P. argus更为明显，因为J. edwardsii的成熟较晚，交配季节较短，并且每年只从雌性中受益一卵资源投资。如假设的那样，在大型中观世界中进行的实验表明，在接受期间，女性爱德华七世与大型男性同居的机会多于偶然，但并非在其他时间。大型雄性爱德华猪与最大的未交配雌性同居一个小窝，而小型雄性则没有交配的大小。相比之下，异性同居雌性和雄性P. argus的比例不超过偶然。野生同居模式支持了这两个物种的实验室发现。我们的研究结果表明，不同的繁殖策略与多刺龙虾的择偶特异性之间存在紧密联系，这与基于温带与热带生态系统环境季节性的预测相一致。

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