Diet composition and food selectivity of 0-group herring (Clupea harengus L.) and sprat (Sprattus sprattus (L.)) in the northern Baltic Sea
Diet composition and food selectivity of 0-group herring (Clupea harengus L.) and sprat (Sprattus sprattus (L.)) in the northern Baltic Sea
复制标题
波罗的海北部 0 族鲱鱼 (Clupea harengus L.) 和鲱鱼 (Sprattus sprattus (L.)) 的饮食组成和食物选择性
DOI：
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发表时间：
1996
期刊：
影响因子：
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通讯作者：
F. Arrhenius
中科院分区：
文献类型：
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作者：
F. Arrhenius
本文研究了波罗的海主要食动物--鲱鱼（Clupea harengus）和鲱鱼（Sprattus sprattus）的食物组成和对猎物的选择性。食物主要是浮游动物，主要是枝角类（Bosmina longispina maritima和Pleopsis polyphemoides）和桡足类（蜱螨属）。和长角宽孔霉（Eurytemora aYnis hirundoides/Temora longicornis）。在对每种鱼进行单独分析时，两种不同的0-类群捕食者（在取样年内孵化的鱼）对猎物的选择顺序是不同的。对青鱼和幼鱼的捕食偏好顺序分别为：蜱螨目>宽水蚤目>枝角类>小拟哲水蚤目>桡足类无节幼体;宽水蚤目>枝角类>蜱螨目>拟哲水蚤目>桡足类无节幼体。随着它们的成长，0群鲱类选择较大的猎物;最大的偏好是中等大小的猎物（头胸部长度为0.7 - 1.0 mm）。? 1996年国际海洋考察理事会
Diet composition and prey selectivity of the major Baltic Sea zooplanktivores, 0-group herring (Clupea harengus) and sprat (Sprattus sprattus), were studied in a coastal area. Diets were dominated by zooplankton, mainly cladocerans (Bosmina longispina maritima and Pleopsis polyphemoides) and copepods (Acartia spp. and Eurytemora aYnis hirundoides/Temora longicornis). There were diVerences in order of the prey selected by the two diVerent 0-group predators (fish hatched during the sampling year) when analysing each species separately. The general order of prey preference for herring was Acartia>Eurytemora>cladocerans>Pseudocalanus minutus>copepod nauplii and for sprat Eurytemora>cladocerans>Acartia>Pseudocalanus>copepod nauplii. As they grew 0-group clupeoids selected larger prey; the greatest preference was shown for intermediate sized prey (0.7‐1.0 mm in cephalothorax length). ? 1996 International Council for the Exploration of the Sea