Feeding Ecology of Three Sympatric Species of Leatherjackets (Pisces : Monacanthidae) from a Posidonia Seagrass Habitat in New South Wales
Feeding Ecology of Three Sympatric Species of Leatherjackets (Pisces : Monacanthidae) from a Posidonia Seagrass Habitat in New South Wales
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DOI：
10.1071/mf9780631
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发表时间：
1978
影响因子：
1.8
通讯作者：
J. Bell;J. Burchmore;D. Pollard
中科院分区：
文献类型：
--
作者：
J. Bell;J. Burchmore;D. Pollard
在悉尼附近的澳大利亚波西多尼亚海草生境中，三种皮草（Monacanthus chinensis、Meuschenia freycineti和Meuschenia trachylepis）平均占总生物量的34%和总鱼类数量的27%。单爪鱼（Monacanthus chinensis）占优势，生物量占总生物量的22%，数量占总数量的18%。这三个物种都是杂食性的，消耗大量的海草和藻类以及动物材料。然而，只有海草的外壳动物群和附生藻类似乎被消化了。这三个物种的其他食物包括水螅类、软体动物、甲壳类和多毛类。水蚤对海草的摄取量最大（65%），水蚤对动物性食物的摄取量最大（40%），摄取量最多（55%）；水蚤对动物性食物的摄取量最少（12%），摄取量最少（55%）。这三个物种都高度依赖于该海草栖息地的包壳动物群、附生藻类和其他附生动物和内动物，因此强调了保护波西多尼亚床的重要性。
Three species of leatherjackets, Monacanthus chinensis, Meuschenia freycineti and Meuschenia trachylepis, averaged 34% of the total biomass and 27% of the total numbers of fishes in a Posidonia australis seagrass habitat near Sydney. Monacanthus chinensis was dominant, comprising 22% of the total biomass and 18% of the total numbers in this fish community. All three species were omnivorous, consuming considerable amounts of seagrass and algae as well as animal material. However, only the encrusting fauna and epiphytic algae of the seagrass appeared to be actually digested. Other foods of all three species included hydroids, molluscs, crustaceans and polychaetes. Meuschenia freycineti consumed the largest quantities (65%) of seagrass, Monacanthus chinensis consumed the largest amount (40%) and greatest variety of animal foods, and Meuschenia trachylepis took the smallest quantity (12%) and number of animal foods and the greatest amount (55 %) of algae. All three species were found to be highly dependent on the encrusting fauna, epi- phytic algae and other epifauna and infauna of this seagrass habitat, and the importance of preserving Posidonia beds is therefore stressed.