Larval Supply and Patterns of Recruitment for Two Caribbean Reef fishes Stegastes partitrus
Larval Supply and Patterns of Recruitment for Two Caribbean Reef fishes Stegastes partitrus
复制标题
两种加勒比礁鱼 Stegastes patitrus 的幼体供应和招募模式
DOI：
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发表时间：
1996
期刊：
影响因子：
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通讯作者：
R. Cowen
中科院分区：
文献类型：
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作者：
S. Sponaugle;R. Cowen
要检查的相对作用的物理和生物过程中涉及的珊瑚礁鱼类的招聘，供应和招聘的时间和空间格局进行了测量两种鱼，Stegastes partitus（Poey）（Pomacentridae）和Acanthurus bahianus Castelnau（Acanthuridae），招聘到巴巴多斯，西印度群岛。夜间光陷阱收集的后期幼虫进行了比较与青少年招聘模式。耳石记录提供了幼虫持续时间和定居后年龄的估计。幼虫供应的时间模式是相似的两个物种：丰度在第三季度的月亮达到峰值。然而，幼虫供应的空间格局不同物种之间：在大型招聘事件，S。partitus幼虫在南方的数量较多，A. bahianus在北部，这表明幼虫供应不仅仅是被动运输的结果。供应模式随后得到维持（S。partitus）或修饰的（A. bahianus）的青少年。一般来说，幼鱼密度随时间的延长而降低。partitus均匀分布沿着海岸;然而，在重大事件中，招聘的空间格局反映了幼虫供应的格局。与此相反，A. bahianus是直接相反的幼虫供应模式，这表明对于某些物种，postsettlement过程，如栖息地选择可能更有影响力，在创建空间模式的招聘。
To examine the relative roles of physical and biological processes involved in the recruitment of reef fishes, temporal and spatial patterns of supply and recruitment were measured for two fishes, Stegastes partitus (Poey) (Pomacentridae) and Acanthurus bahianus Castelnau (Acanthuridae), recruiting to Barbados, West Indies. Nightly light-trap collections of late-stage larvae were compared with patterns of juvenile recruitment. Otolith records provided estimates of larval duration and post- settlement age. Temporal patterns of larval supply were similar for both species: abundances peaked during the third-quarter moon. However, spatial patterns of larval supply varied between species: during large recruitment events, S. partitus larvae were more abundant in the south, A. bahianus in the north, suggesting that larval supply was not simply the result of passive transport. Patterns of supply were subsequently maintained (S. partitus) or modified (A. bahianus) by juveniles. In general, densities of juvenile S. partitus were evenly distributed along the coast; however, during major events, spatial patterns of recruitment reflected patterns of larval supply. In contrast, densities of juvenile A. bahianus were directly opposite patterns of larval supply, suggesting that for some species, postsettlement processes such as habitat selection may be more influential in creating spatial patterns of recruitment.