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Feeding ecology of the mud shrimp Solenocera melantho in the East China Sea

文献类型： 外文期刊

作者： Li, Hui Yu 1 ; Ling, Jian Zhong 1 ; Yan, Li Ping 1 ; Cheng, Jia Hua 1 ; Hu, Fen 1 ;

作者机构： 1.CAFS, East China Sea Fisheries Res Inst, Minist Agr, Key & Open Lab East China Sea & Ocean Fishery Res, Shanghai 200090, Peoples R China

关键词： East China Sea;feeding behavior;prey items;Solenocera melantho

期刊名称：MARINE ECOLOGY-AN EVOLUTIONARY PERSPECTIVE （ 影响因子：1.693； 五年影响因子：1.899 ）

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收录情况： SCI

摘要： The feeding habits of the mud shrimp Solenocera melantho were studied in the East China Sea by analysing 720 stomach contents and comparing diet composition and prey diversity among seasons, sexes and size classes. Feeding activity was linked to season and ovarian condition. The stomach fullness was high during spring and summer and low in fall. Females with advanced ovaries also displayed low stomach fullness, which suggests that feeding activity is affected by the reproductive cycle. The diet of S.melantho consisted of 42 different prey categories, primarily smaller crustaceans, Foraminifera, polychaetes, mollusks and fishes (larvae and eggs). Crustacea,Foraminifera and polychaetes together constituted the dominant prey groups, accounting for 75% of total prey abundance and >50% of total prey occurrence. Diet composition differed among seasons between sexes and size classes. Females and males consumed the same prey items but with different orders of importance. In terms of body size, the small shrimps preferred relatively small food items, such as Foraminifera and algae, whereas larger shrimps preferred polychaetes and crustaceans. Trophic diversity varied among the seasons within both sexes and size classes, with the highest values being observed in fall. Niche overlap was high within both sexes and size classes among seasons (0.6051-0.8740).

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