A FUNCTIONAL-ANALYSIS OF GRAZING IN PARROTFISHES (FAMILY SCARIDAE) - THE ECOLOGICAL IMPLICATIONS
A FUNCTIONAL-ANALYSIS OF GRAZING IN PARROTFISHES (FAMILY SCARIDAE) - THE ECOLOGICAL IMPLICATIONS
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DOI：
10.1007/bf00751035
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发表时间：
1990-08-01
影响因子：
1.4
通讯作者：
CHOAT, JH
中科院分区：
文献类型：
--
作者：
BELLWOOD, DR;CHOAT, JH
鹦嘴鱼代表一个单一的群体放牧食草动物的假设是解决形态，功能和生态分析。这个假设被拒绝了。澳大利亚大堡礁的24条棘鹦嘴鱼分为两个功能群：挖掘者和刮削者。检查了所有24个物种的颌骨的骨骼学和肌肉学，并提供了每组代表性物种的详细描述。对五种代表性物种的主要颌骨结构的相对重量进行了量化。物种之间的形态差异进行了解释，在功能的背景下，并进行了评估的基础上观察喂养领域。在两个功能组的物种表现出主要的组相关的差异，在他们的咬速度，微生境利用模式，和形式和程度的底层挖掘放牧。群体相关的差异也很明显，在进食率，突袭大小和咬率。该物种分为两个功能组的支持形态和行为的观察。在家庭内的两个功能组的生态意义进行了讨论有关的鹦鹉鱼对珊瑚礁的作用，特别是在生物侵蚀。
The assumption that parrotfishes represent a single group of grazing herbivores is addressed by morphological, functional and ecological analyses. This assumption is rejected. The 24 scarine parrotfishes from the Great Barrier Reef, Australia, are divided into two functional groups: excavators and scrapers. The osteology and myology of the jaws of all 24 species were examined, and a detailed description of a representative species from each group is provided. The relative weights of the major jaw structures of five representative species were quantified. Morphological differences between species were interpreted in a functional context and were assessed based on observations of feeding in the field. Species in the two functional groups show major group-related differences in their bite speeds, microhabitat utilization patterns, and form and extent of substratum excavation during grazing. Group-related differences are also apparent in feeding rates, foray sizes and bite rates. The division of the species into two functional groups is supported by both morphological and behavioural observations. The ecological significance of two functional groups within the family is discussed in relation to the role of parrotfishes on reefs, particularly in terms of bioerosion.