...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Proceedings of the National Academy of Sciences of the United States of America >Behavioral tradeoff in estuarine larvae favors seaward migration over minimizing visibility to predators
【24h】

Behavioral tradeoff in estuarine larvae favors seaward migration over minimizing visibility to predators

机译：在河口幼虫的行为权衡上，比起将捕食者的能见度降至最低，更倾向于向海迁移

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The ability of microscopic larvae to control their fate and replenish populations in dynamic marine environments has been a long-running topic of debate of central importance to understanding the ecology and evolution of life in the sea and managing resources in a changing global environment. After decades of research documenting behaviors that keep larvae close to natal populations, it is becoming apparent that larval behaviors in a broader spectrum of species promote long-distance migrations to offshore nursery grounds. Larvae must exert considerable control over their movements. We now show that larval emigration from estuaries is favored even over minimizing visibility to predators. An endogenous tidal vertical migration that would expedite seaward migration of Uca pugilator larvae was maintained experimentally across two tidal regimes. The periodicity of the rhythm doubled to match the local tidal regime, but larvae ascended to the surface during the daytime rather than at night. This process would conserve larval emigration but increase the visibility to predators across part of the species range. The periodicity of tidal vertical migration by Sesarma cinereum larvae failed to double and was inappropriately timed relative to both environmental cycles in the absence of a diel cycle. The timing system regulating tidally timed behaviors in these two species of crabs evidently differed. Phenotypic plasticity can conserve larval transport of both species when tidal and diel cycles are present. It may be widespread in the sea where diverse habitats are encountered across extensive species ranges.
机译：微观幼虫在动态海洋环境中控制其命运和补充种群的能力一直是辩论的长期话题，对于理解海洋生态和进化以及在不断变化的全球环境中管理资源至关重要。经过数十年的研究记录了使幼虫接近出生种群的行为，很明显，在更广泛的物种中，幼虫的行为促使长距离迁移到近海苗圃场。幼虫必须对其动作施加相当大的控制。我们现在表明，即使将捕食者的可见度降至最低，从河口的幼体移徙也受到青睐。在两个潮汐状态下，通过实验维持了内生的潮汐垂直迁移，该潮汐垂直迁移将加快Uca pugilator幼虫向海的迁移。节律的周期增加了一倍，以适应当地的潮汐状态，但是幼虫在白天而不是在夜晚上升到水面。这个过程将节省幼体的迁徙，但会增加部分物种范围内捕食者的可见度。 Sesarma cinereum cinereum幼虫的潮汐垂直迁移的周期未能加倍，并且相对于两个环境周期（在没有diel周期的情况下），其时间安排都不适当。调节这两种蟹的潮汐定时行为的计时系统明显不同。当存在潮汐和迪尔循环时，表型可塑性可以保护两个物种的幼体运输。它可能广泛存在于海洋中，在广泛的物种范围内会遇到各种各样的栖息地。

著录项

相似文献

  • 外文文献
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号