Trophic strategies and functional morphology of feeding appendages, with emphasis on setae, of Upogebia omissa and Pomatogebia operculata (Decapoda: Thalassinidea: Upogebiidae)
Trophic strategies and functional morphology of feeding appendages, with emphasis on setae, of Upogebia omissa and Pomatogebia operculata (Decapoda: Thalassinidea: Upogebiidae)
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Upogebia omissa 和 Pomatogebia operculata 摄食附属物的营养策略和功能形态，重点是刚毛（十足目：Thalassinidea：Upogebiidae）
DOI：
10.1006/zjls.2000.0244
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发表时间：
2000
影响因子：
2.8
通讯作者：
S. Rodrigues
中科院分区：
文献类型：
--
作者：
V. R. Coelho;Austin B. Williams;S. Rodrigues
虽然在历史上，Upogebiidae的物种被认为是滤食性动物，但最近的研究表明，这一组的许多物种也存款饲料。本文分析了该科两个物种--研究了其取食机制、胃内容物和取食附属物的形态，重点是刚毛。联合在桑迪底质中发现的omissa是一种广泛的摄食者，而P. operculata栖息在珊瑚的洞穴中，更专门地进行过滤摄食。在所描述的57种刚毛类型中，只有21%是两种共有的。刚毛类型主要分为三大类：羽状、锯齿状和羽齿状。盖盖毛蕨的刚毛多样性较低，羽齿刚毛与锯齿刚毛的比例高于单齿刚毛。奥米萨第一和第二腹足类在收集食物方面起着重要作用。口器有两个主要功能：刷和保留颗粒，以便食物可以从腹足动物运送到嘴里。一般来说，在这些附属物中，指状突和基端突负责刷擦颗粒，而端部突和基节端突负责保持颗粒。刚毛类型的多样性和它们在附肢上分布的复杂性可能与在摄食之前选择和研磨颗粒的必要性有关，反映了U. omissa和P. operculata。刚毛字符似乎是这组物种的一个特定的喂养模式的相对重要性的指标。
Although species of Upogebiidae historically have been considered filter feeders, recent studies show that many species of this group also deposit feed. In this study, the degrees of trophic specialization of two species of this family, Upogebia omissa and Pomatogebia operculata, were analysed. Feeding mechanisms, stomach contents and morphology of the feeding appendages, with emphasis on setae, were examined. U. omissa, found in sandy substrate, is a generalistic feeder while P. operculata inhabits burrows inside corals, being more specialized in filter feeding. Only 21% of the 57 setal types described were common to both species. Setal types were clustered in three main categories: plumed, serrate and plumodenticulate. No simple setae were found. P. operculata has lower setal diversity, with higher ratio of plumodenticulate to serrate setal types than U. omissa. The 1st and 2nd pereiopods have an important role in collecting food. The mouthparts have two main functions: to brush and retain particles so that food can be transported from the pereiopods to the mouth. Generally in these appendages, the dactyli and basal endites are responsible for brushing particles and the meri and coxal endites for particle retention. The diversity of setal types and complexity of their distribution on the appendages may be related to the necessity to select and triturate particles prior to ingestion, reflecting the differences in trophic strategies utilized by U. omissa and P. operculata. Setal characters appear to be indicators of the relative importance of a specific feeding mode for species of this group.