A life history model for the San Francisco Estuary population of the Chinese mitten crab, Eriocheir sinensis (Decapoda: Grapsoidea)
A life history model for the San Francisco Estuary population of the Chinese mitten crab, Eriocheir sinensis (Decapoda: Grapsoidea)
复制标题
旧金山河口中华绒螯蟹种群的生活史模型（十足目：蟹总科）
DOI：
10.1007/s10530-004-2286-y
复制
发表时间：
2005
影响因子：
2.9
通讯作者：
B. Tsukimura
中科院分区：
文献类型：
--
作者：
Deborah A. Rudnick;T. Veldhuizen;R. Tullis;C. Culver;K. Hieb;B. Tsukimura
中华绒螯蟹（Eriocheir sinensis）于 1992 年在旧金山湾首次被发现，现已在旧金山河口数百平方公里的范围内定居。这种入侵物种的生态和经济影响促使我们更好地了解螃蟹的生活史，以此作为更好管理和控制的重要一步。该生活史模型的数据来自作者的研究和科学文献。幼蟹从河口迁移到淡水中，在那里发育成成虫。环境信号可能会刺激性腺发育，随后在夏末开始向下游迁移。螃蟹到达盐水后就会发生交配。胚胎一直携带到孵化，幼虫在定居前经历五个幼体阶段。我们的模型预测了不同温度和生长增量下的发育速率，支持在低盐度或淡水栖息地中至少生存 2 年，并预测大多数加州大闸蟹在性成熟之前至少 3 岁。环境因素强烈影响螃蟹生命阶段的时间和持续时间，并在这种重要入侵物种的全球种群发育时间梯度的背景下进行讨论。
First discovered in San Francisco Bay in 1992, the Chinese mitten crab,Eriocheir sinensis, has become established over hundreds of km2 of the San Francisco Estuary. Ecological and economic impacts of this invasive species motivated our search for a greater understanding of the crab’s life history as an important step in better management and control. Data for this life history model comes from the authors’ research and scientific literature. Juvenile crabs migrate from the Estuary into fresh water where they develop into adults. Environmental signals may stimulate gonad development that is followed by a downstream migration beginning at the end of summer. Mating occurs after the crabs reach saline water. Embryos are carried until hatching, and the larvae undergo five zoeal stages before settlement. Our model projects rates of development at various temperatures and growth increments, supports a minimum of 2 years in low salinity or freshwater habitat, and predicts that most California mitten crabs are at least 3 years old before becoming sexually mature. Environmental factors strongly influence the timing and duration of the crab’s life stages, and are discussed in the context of a gradient of development times for worldwide populations of this important invasive species.