ROLE OF FEEDING AND PREY DISTRIBUTION OF SUMMER AND SOUTHERN FLOUNDER IN SELECTION OF ESTUARINE NURSERY HABITATS
ROLE OF FEEDING AND PREY DISTRIBUTION OF SUMMER AND SOUTHERN FLOUNDER IN SELECTION OF ESTUARINE NURSERY HABITATS
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DOI：
10.1111/j.1095-8649.1995.tb01905.x
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发表时间：
1995-09-01
影响因子：
2
通讯作者：
BURKE, JS
中科院分区：
文献类型：
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作者：
BURKE, JS
饮食的变态幼虫和早期少年夏季和南部比目鱼进行了检查，在解决期间，当他们的分布重叠，并在随后的一段时间内，当两个比目鱼被发现在不同的栖息地。沿沿着上游样带对滩涂上的猎物丰度进行了研究。虽然最初相似，饮食的两个物种分歧之前的发展隔离分布。这些饮食差异反映了在隔离后的两个物种的饮食中发现的。南方比目鱼吃更活跃的表观动物的猎物：糠虾，端足类和哲水蚤桡足类，似乎是一个伏击捕食者。夏季比目鱼主要吃底栖动物：多毛类和无脊椎动物的部分，似乎是一个积极的觅食。研究区域内的猎物分布表明，糠虾梯度可能会影响运动的南方比目鱼的苗圃地。生物和非生物梯度的耦合可能是重要的，在创建苗圃区和指导鱼类物种特定的栖息地类型。(C)1995年不列颠群岛渔业协会
Diets of metamorphosing larvae and early juvenile summer and southern flounder were examined during the settlement period when their distributions overlapped and during a subsequent period when the two flounders were found in different habitats. Prey abundance on tidal flats was examined along an upstream transect. Though initially similar, diets of the two species diverged prior to the development of a segregated distribution. These diet differences reflected those found in the diets of the two species following segregation. Southern flounder ate more active epifaunal prey: mysids, amphipods and calanoid copepods and appeared to be an ambush predator. The summer flounder ate primarily infauna: polychaetes, and invertebrate parts and appeared to be an active forager. Distribution of prey within the study area suggested that mysid gradients may influence movement of southern flounder to nursery grounds. The coupling of biotic and abiotic gradients are probably important in creating nursery areas and guiding fishes to species specific habitat types. (C) 1995 The Fisheries Society of the British Isles