| 长江口海区三疣梭子蟹和细点圆趾蟹食性生态学的研究 |
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| 引用本文： | 张宝琳,相建海,吴耀泉.长江口海区三疣梭子蟹和细点圆趾蟹食性生态学的研究[J].海洋科学,1991,15(5):64-67. |
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| 作者姓名： | 张宝琳 相建海 吴耀泉 |
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| 作者单位： | 中国科学院海洋研究所，中国科学院海洋研究所，中国科学院海洋研究所 青岛 266071，青岛 266071，青岛 266071 |
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| 摘 要： | 本文系1985～1986年长江口渔业资源调查中两种占优势的蟹的食性生态研究结果。长江口海区三疣梭子蟹和细点圆趾蟹,存在着昼夜和季节摄食强度的差异。文章还讨论了两种蟹的摄食竞争,但又共存于同一海区的生态学问题。
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| 关 键 词： | 长江口蟹 食性生态 |
| 收稿时间： | 1990/5/14 0:00:00 |
THE FEEDING ECOLOGY OF THE TWO CRABS (PORTUNUS TRITUBER-CULATUS AND OVALIPES PUNCTATUS) IN THE ESTUARY AND THE ADJACENT SEA WATERS OF CHANGJIANG RIVER |
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| Zhang Baolin,Xiang Jianhai and Wu Yaoquan.THE FEEDING ECOLOGY OF THE TWO CRABS (PORTUNUS TRITUBER-CULATUS AND OVALIPES PUNCTATUS) IN THE ESTUARY AND THE ADJACENT SEA WATERS OF CHANGJIANG RIVER[J].Marine Sciences,1991,15(5):64-67. |
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| Authors: | Zhang Baolin Xiang Jianhai and Wu Yaoquan |
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| Abstract: | Portunus trituberculatus and Ovalipes punctatus are the major dominant co-existing crabs in the estuary and the adjacent sea waters of the Changjiang River. The gastric contents of the two crabs, which were catched during the monthly fishing survey from September 1985 to August 1986, were analysed. The results from 750 P. trituberculatus and 268 O. punctatus showed that the two species are carnivores. The remains of fishes, molluscs, shrimps and echinoderms were to a different extent found from the gastric samples. Their feeding activities are changeable. P. trituberculatus had more variant feeding activities with seasonal changes, while O. punctatus had more variances of feeding activities with diurnal time change. Little differences in feeding between the male and the female in both crabs were determined. The relationship of feeding function and morphological structure were noticed. On basis of ecological theory, the reason why the two carnivore crabs could) coexist in the same area with limited supplies of food resources was discussed. |
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| Keywords: | Portunus trituberculatus Ovalipes punctatus Feeding ecology |
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