Linking functional morphology and feeding performance in larvae of two coral-reef fishes
Linking functional morphology and feeding performance in larvae of two coral-reef fishes
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将两种珊瑚礁鱼幼虫的功能形态和摄食性能联系起来
DOI：
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发表时间：
2011
影响因子：
1.4
通讯作者：
R. Turingan
中科院分区：
文献类型：
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作者：
M. L. Wittenrich;R. Turingan
尽管公认的现象，海洋硬骨鱼幼体的生物学是很大的不同，从少年和成年同种，很少有人知道的变化，在设计中的喂养器具作为幼虫从孵化到变态发展。此外，我们对这些发育变化对摄食性能的影响的理解非常有限。采用聚类分析、多维尺度分析（nMDS）和典范对应分析（CCA）等方法，研究了眼斑双锯鱼（Amphiprion ocellaris）和费氏伪丽鱼（Pseudochromis fridmani）仔鱼摄食器官发育与摄食性能的关系。从我们的分析中出现了几种模式。首先，通过个体发育，摄食器官的发育状态在复杂性上增加，从外源性摄食开始时的简单的舌骨驱动系统到变态之前涉及颅骨的所有成年功能元件的更复杂的摄食系统。虽然两种鱼的摄食器官在变态前后都向舌骨-鳃盖骨-下颌骨连接状态收敛，但相对于A. fridmani，P.第一次进食时的单眼。第二，第一次觅食的幼虫以较小的、不易捕捉的浮游动物为食。相比之下，存活超过第一次进食阶段的幼虫以更多样化的猎物类型为食，包括更大，更难以捉摸的浮游动物。第三，种内和种间的变化，在发展的喂养设备是与变化的喂养性能。两个物种的孵化后发育轨迹显示出与阶段一致的模式（即，个体发育状态）-形态和性能的特异性转变。此外，在喂养功能形态和喂养性能的发展转变的数量不同的物种之间表现出对比的孵化期。
Despite the well acknowledged phenomenon that the biology of marine teleost fish larvae is much different from that of juvenile and adult conspecifics, very little is known about the changes in design of the feeding apparatus as larvae develop from hatching through metamorphosis. Furthermore, our understanding of the consequences of these developmental changes for feeding performance is very limited. In this study, we examined the relationship between the development of the feeding apparatus and feeding performance in larvae of Amphiprion ocellaris and Pseudochromis fridmani using cluster analysis, multi-dimensional scaling (nMDS), and canonical correspondence analysis (CCA). Several patterns emerge from our analyses. First, the state of development of the feeding apparatus increased in complexity through ontogeny, from a simple, hyoid-driven system at the onset of exogenous feeding to a more complex feeding system involving all adult functional elements of the cranium just prior to metamorphosis. Although the feeding apparatus converged to the hyoid-opercular-mandible linkage state around metamorphosis in both species, P. fridmani had a lesser developed hyoid-mandible linkage system relative to A. ocellaris at the onset of first-feeding. Second, first-feeding larvae fed on smaller, less elusive zooplankton. In contrast, larvae that survived beyond the first-feeding stage fed on more diverse prey types, including larger, more elusive zooplankton. Third, intra- and inter-specific variation in the development of the feeding apparatus is associated with variation in feeding performance. The post-hatch developmental trajectory in both species showed a pattern consistent with stage (i.e., ontogenetic state)-specific shifts in morphology and performance. Furthermore, the number of developmental transitions in both feeding functional morphology and feeding performance differ between species that exhibit contrasting incubation periods.