The Importance of Intertidal Sand-burrowing Peracarid Crustaceans as Prey for Fish in the Surf-zone of a Sandy Beach in Otsuchi Bay, Northeastern Japan.
The Importance of Intertidal Sand-burrowing Peracarid Crustaceans as Prey for Fish in the Surf-zone of a Sandy Beach in Otsuchi Bay, Northeastern Japan.
复制标题
日本东北部大槌湾沙滩冲浪区潮间带穴居沙壳甲壳类动物作为鱼类猎物的重要性。
DOI：
10.2331/fishsci.65.856
复制
发表时间：
1999
影响因子：
1.9
通讯作者：
K. Kawaguchi
中科院分区：
文献类型：
--
作者：
Kazutaka Takahashi;Taro Hirose;K. Kawaguchi
1994年和1995年春夏两季，在日本东北部大槌湾沙滩的冲浪区，对鱼类捕食潮间沙穴居甲壳类动物的情况进行了调查。糠虾Archaeomysis kokuboi、端足类Haustorioides japonicus 和等足类Excirolana chiltoni 是冲浪区鱼类主要捕食的甲壳类动物。使用胃饱足指数和每种食物的相对重要性来评估每种猎物的重要性。冲浪区的鱼主要以 A. kokuboi 为食，在春季和夏季检查的所有胃中分别发现了 60% 和 71% 的鱼。糠虾被黑石斑鱼、日本凤尾鱼、日本比目鱼、兰森网鲈和日本蛋白眼鱼捕食，而且这种捕食只发生在夜间。在春季和夏季检查的胃中分别发现了 33% 和 39% 的日本血吸虫。两栖类群被绿河豚、兰索网鲈和风筝鳍龙捕食。与糠虾相反，它在白天作为猎物比在晚上更重要。这项研究表明，冲浪区鱼类的主要食物是潮间带沙穴穴居的甲壳类动物，这表明冲浪区是这些鱼类的高产觅食地。
Predation on intertidal sand-burrowing peracarid crustaceans by fish was investigated in a diet re gime in the spring and summer of 1994 and 1995 in the surf-zone of a sandy beach in Otsuchi Bay, northeastern Japan. The mysid Archaeomysis kokuboi, the amphipod Haustorioides japonicus, and the isopod Excirolana chiltoni were the main peracarids preyed on by the surf-zone fish. The impor tance of each prey species was evaluated using indices of stomach fullness and the relative importance of each food item. The fish in the surf-zone exploited A. kokuboi predominately, and it was found in 60 and 71% of all the stomachs examined during the spring and summer, respectively. The mysid was preyed upon by black rockfish, the Japanese anchovy, the Japanese flounder, Ransonnet's surfperch and the Japanese opaleye, and this predation occurred exclusively at night. H. japonicus was found in 33 and 39% of the stomachs examined during the spring and summer, respectively. The amphi pod was preyed upon by the green puffer, Ransonnet's surfperch, and the kite-fin dragonet. In contrast to the mysid, it was more important as prey during the daytime than at night. This study showed that a major part of the diet of surf-zone fishes consists of intertidal sand-burrowing peracarid crustaceans, suggesting that the surf-zone is a productive feeding ground for these fish.