...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Coral reefs: journal of the International Society for Reef Studies >Habitat differentiation in the early life stages of simultaneously mass-spawning corals
【24h】

Habitat differentiation in the early life stages of simultaneously mass-spawning corals

机译：同时大规模产卵珊瑚的早期生境分化

获取原文
获取原文并翻译 | 示例
   

获取外文期刊封面封底 >>

       
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The settlement process of coral larvae following simultaneous mass-spawning remains poorly understood, particularly in terms of population and community parameters. Here, the larval settlement patterns of Acropora corals, which are the most diverse genera of scleractinian corals at the species (haplotype) level, were investigated within a single subtropical reef. Across a 4-year period (2007-2010), the mitochondrial and nuclear molecular markers of 1,073 larval settlers were analyzed. Of the 11 dominant haplotypes of recruited populations, nine exhibited non-random patterns of settlement distribution. This result suggests that the actual habitat segregation starts during the early swimming larval stages of their life history, rather than by natural selection after random settlement. In addition, the presence of a depth-related settlement pattern supports that species-specific vertical zonation of coral larvae may play a role in the establishment of habitat segregation. Moreover, in some species that showed a preference toward the shoreward area of the bay, the settlement pattern was consistent with that of the adult distribution. This result indicates that the gametes were not mixed between fore and back reefs in the period from fertilization to settlement during the mass-spawning event, even within a single small reef. Another compatible hypothesis of this pattern is that the larvae are able to recognize various types of environmental information, facilitating the selection of optimal micro-habitats. Overall, Acropora coral larvae that are produced from a simultaneous mass-spawning event may have adapted to complex reef topography by means of multi-step habitat selection at settlement, corresponding to different spatial scales.
机译：大规模繁殖同时发生的珊瑚幼虫的沉降过程仍然知之甚少，特别是在种群和群落参数方面。在这里，在单个亚热带珊瑚礁中调查了鹿角珊瑚的幼虫沉积模式，鹿角珊瑚是在物种（单倍型）水平上最斑diverse的珊瑚属。在4年期间（2007-2010年），分析了1,073个幼虫定居者的线粒体和核分子标记。在被招募人口的11种优势单倍型中，有9种表现出非随机的定居分布模式。该结果表明，实际栖息地隔离是在其生活史的早期幼体游泳阶段开始的，而不是通过随机定居后的自然选择而开始的。此外，与深度有关的沉降模式的存在支持珊瑚幼虫特定物种的垂直分区可能在生境隔离的建立中发挥作用。此外，在某些对海湾沿岸地区表现出偏好的物种中，其定居方式与成年分布方式一致。该结果表明，在大规模产卵期间，从受精到定居期间，配子没有混入前礁和后礁之间，即使在单个小礁内也是如此。这种模式的另一个兼容假设是，幼虫能够识别各种类型的环境信息，从而有助于选择最佳的微生境。总体而言，同时发生大量产卵事件产生的棘足珊瑚幼虫可能已通过在定居点进行多步生境选择（对应于不同的空间规模）来适应复杂的礁石地形。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
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