Contrasting larval transport in demersal fish and benthic invertebrates: the roles of behaviour and advective processes in determining spatial pattern
Contrasting larval transport in demersal fish and benthic invertebrates: the roles of behaviour and advective processes in determining spatial pattern
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DOI：
10.1139/cjfas-58-4-811
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发表时间：
2001-04-01
影响因子：
2.4
通讯作者：
Snelgrove, PVR
中科院分区：
文献类型：
--
作者：
Bradbury, IR;Snelgrove, PVR
许多底栖无脊椎动物和底栖鱼类有浮游幼虫，因此必须平衡向新生境的扩散和在可能生存和生长的地方定居的需要。我们回顾已发表的研究，以确定这些群体之间的文献中的不连续性是否代表了真实的生态差异。具体来说，我们研究的生物和物理过程的作用和规模，这些过程在鱼类和无脊椎动物的模式形成。对于大多数的物理机制，影响幼虫运输在不同的规模，我们发现的例子，鱼类和无脊椎动物的研究，是重要的，在每个规模。一个比较的扩散持续时间表明，更多的无脊椎动物物种具有高度有限的扩散潜力。扩散潜力和地理范围的比较表明，在这两种情况下，持续时间可能发挥作用，在定义物种的地理范围。鱼的幼虫通常比无脊椎动物的幼虫更快的游泳者，这表明游泳可能有助于在更大的空间尺度上形成图案。相反，记录的能力，以延迟变态是更普遍的无脊椎动物，可能与更大的流动性的成鱼相对于无脊椎动物。最终，两个群体都有类似的过程，尽管有时规模不同。
Many benthic invertebrates and demersal fish have planktonic larvae and must therefore balance dispersal to new habitat with the need to settle where survival and growth are possible. We review published studies to determine whether the discontinuity in the literature between these groups represents a real ecological difference. Specifically, we examine the roles of biological and physical processes and the scales at which these processes act in pattern formation in fish and invertebrates. For most of the physical mechanisms that influence larval transport at different scales, we find examples of fish and invertebrate studies that are important at each scale. A comparison of planktonic durations suggests that more invertebrate species have highly limited dispersal potential. Comparison of dispersal potential and geographic range suggests that planktonic duration may play a role in defining the geographic range of species in both cases. Fish larvae were generally faster swimmers than invertebrate larvae, suggesting that swimming may contribute to pattern formation at larger spatial scales. In contrast, the documented capacity to delay metamorphosis is more prevalent in invertebrates and may be related to the greater mobility of adult fish relative to invertebrates. Ultimately, similar processes operate in both groups, although sometimes at different scales.