Pattern and Plasticity in Tropical Hermit Crab Growth and Reproduction
Pattern and Plasticity in Tropical Hermit Crab Growth and Reproduction
复制标题
热带寄居蟹生长和繁殖的模式和可塑性
DOI：
10.1086/283757
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发表时间：
1981
影响因子：
2.9
通讯作者：
M. Bertness
中科院分区：
文献类型：
--
作者：
M. Bertness
研究了巴拿马湾三种同域寄居蟹的生殖生态。所有这三个物种都揭示了由它们的贝壳供应介导的大小和繁殖模式。已证明髋臼杯供应有限。壳大到足以允许生长的螃蟹，以减少生殖支出为代价来努力生长，而壳太小而不能生长的螃蟹则将更多的时间和精力分配给直接的生殖收益。这种资源调节生长和繁殖之间的权衡，使这些热带蟹类在重要的生活史特征上具有可塑性。壳供应相对较差的螃蟹以较小的尺寸繁殖，繁殖更频繁，具有较大的离合器，并且无法达到具有较少限制的壳供应的螃蟹的较大尺寸。生活史特征的这种灵活性使这些螃蟹能够根据腹足动物死亡率控制的资源供应以及竞争对手和捕食者的存在来调整其生殖时间表。
The reproductive ecology of three sympatric hermit crab species from the Bay of Panama is examined. All three species reveal patterns of size and reproduction mediated by their supply of shells. Shells are demonstrated to be in limited supply. Crabs with shells large enough to allow growth, put effort into growth at the expense of reducing reproductive expenditures, while crabs in shells too small to permit growth allocate more time and effort into immediate reproductive gains. This resource regulated trade-off between growth and reproduction gives these tropical crabs plasticity in important life-history traits. Crabs with a relatively poor supply of shells reproduce at smaller sizes, reproduce more frequently, have larger clutches, and are unable to reach the larger sizes of crabs with a less limiting supply of shells. This flexibility in life-history traits allows these crabs to tailor their reproductive schedules to resource supplies controlled by gastropod mortality, as well as the presence of competitors and predators.