Pelagic larval growth rate impacts benthic settlement and survival of a temperate reef fish
Pelagic larval growth rate impacts benthic settlement and survival of a temperate reef fish
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中上层幼虫生长率影响温带珊瑚鱼的底栖沉降和生存
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发表时间：
2002
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影响因子：
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通讯作者：
A. M. Findlay
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文献类型：
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作者：
J. Shima;A. M. Findlay
在海底生境中定居的海洋珊瑚礁生物的幼虫在个体质量上可能有很大差异。我们评估了潜在的影响，在幼虫的持续时间，大小在解决，和解决后的生存最近定居的海带鲈鱼Paralabrax clathratus的幼虫生长速度（1度量的质量）的变化。我们采样海带鲈鱼每天和每周从位于附近的箭牌环境研究所，圣卡塔利纳岛标准化的收藏家，以表征幼虫性状的定居者和幸存的新兵。使用生长模型来拟合幼虫耳石生长的轨迹，我们估计瞬时幼虫的生长速率，发现这些值是很好的预测幼虫的持续时间和少年的生存。海带鲈鱼，迅速增长的幼虫解决8.5天比增长最慢的个人，这两个群体有类似大小的个人在解决，但快速增长的幼虫经历了增强的生存在第一个5天后，解决相对较慢的增长幼虫。有越来越多的证据表明，幼虫的经验继续施加人口的影响，以后的生活阶段。这有助于解释海洋系统中补充的某些时空变异性。
Larvae of marine reef organisms settling into benthic habitats may vary greatly in individual quality. We evaluated potential effects of variation in larval growth rate (1 metric of quality) on larval duration, size-at-settlement, and post-settlement survival of recently settled kelp bass Paralabrax clathratus. We sampled kelp bass daily and weekly from standardized collectors located near the Wrigley Institute for Environmental Studies, Santa Catalina Island, to characterize larval traits of settlers and surviving recruits. Using growth models to fit trajectories of larval otolith growth, we estimated instantaneous larval growth rates and found that these values were good predictors of larval duration and juvenile survival. Kelp bass that grew rapidly as larvae settled ∼8.5 d sooner than the slowest growing individuals; both groups had similar sized individuals at settlement, but fast growing larvae experienced enhanced survival during the first 5 d after settlement relative to slower growing larvae. There is growing evidence suggesting that larval experience continues to exert demographic consequences on subsequent life stages. This helps to explain some of the spatial and temporal variability that characterizes recruitment in marine systems.