Predator-prey systems of drifting seaweed communities off the Tohoku coast, northern Japan, as determined by feeding habit analysis of phytal animals
Predator-prey systems of drifting seaweed communities off the Tohoku coast, northern Japan, as determined by feeding habit analysis of phytal animals
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DOI：
10.1046/j.1444-2906.2003.00616.x
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发表时间：
2003-04-01
影响因子：
1.9
通讯作者：
Taniguchi, K
中科院分区：
文献类型：
--
作者：
Sano, M;Omori, M;Taniguchi, K
1994 年 5 月和 6 月，我们在日本北部东北海岸采集了植物动物（与漂流海藻有关的动物群），以研究它们的食性。植物动物被分为以下三个食性组：（i）捕食甲壳类动物的食肉动物：伽马科（Stenothoe sp.）和十足目巨眼动物； (ii) 以甲壳类动物和羽状硅藻为食的杂食动物：一种蔓足类动物（Lepas anserifera）、三种伽马目动物（Calliopius sp.、Jassa slatteryi 和 J. marmorata）、一种等足类动物（Idotea Metala）、一种十足目甲壳类动物（Planesyaneus）、一种十足目巨眼动物和两种蚱科动物（Caprella penantis 和 Caprella）穆蒂卡）； (iii) 以羽状硅藻、岩藻类和岩藻类以外的海藻为食的草食动物：三种伽马科动物（Allorchestes angusta、Amphithoe lacertosa 和 Perampithoe lindbergi）、一种等足类动物（Cymodoce japonica）和一种多毛类动物（Platynereis bicanaliculata）。肠道内容物中的羽状硅藻主要由 Licmophora spp.、Navicula spp.、Nitzschia spp. 组成。和 Cocconeis spp。以及岩藻类以外的海藻（即 Ectocarpus siliculosus 和 Sphacelaria Furcigera）。后两种藻类似乎是漂流海藻上的附生植物。这些结果表明，植物动物通过与两个初级生产者（即漂流海藻和其上生长的附生植物）的营养联系在漂流海藻群落中发挥重要作用。
We collected phytal animals (fauna associated with drifting seaweeds) off the Tohoku coast in northern Japan in May and June 1994 to examine their feeding habits. Phytal animals were assigned to the following three feeding habit groups: (i) carnivores preying on crustaceans: a gammarid (Stenothoe sp.) and a decapod megalops; (ii) omnivores feeding on crustaceans and pinnate diatoms: a cirripede (Lepas anserifera), three gammarids (Calliopius sp., Jassa slatteryi and J. marmorata), an isopod (Idotea metallica), a decapod crustacean (Planes cyaneus), a decapod megalops and two caprellids (Caprella penantis and Caprella mutica); and (iii) herbivores grazing on pinnate diatoms, fucoids and seaweeds other than fucoids: three gammarids (Allorchestes angusta, Amphithoe lacertosa and Perampithoe lindbergi), an isopod (Cymodoce japonica) and a polychaete (Platynereis bicanaliculata). Pinnate diatoms in the gut contents were composed mainly of Licmophora spp., Navicula spp., Nitzschia spp. and Cocconeis spp. and seaweeds other than fucoids (i.e. Ectocarpus siliculosus and Sphacelaria furcigera). The latter two algae seemed to be epiphytes on drifting seaweeds. These results suggest that phytal animals play an important role in drifting seaweed communities through trophic linkage with two primary producers (i.e. drifting seaweeds and the epiphytes growing on them).