| 引用本文: | 郭先武,周洁,杨灵.圆尾斗鱼食物选择性的实验研究.湖泊科学,1995,7(2):173-177. DOI:10.18307/1995.0210 |
| Guo Xianwu,Zhou Jie,Yang Ling.Experimental study on the food selectivity of Macropodus chinensis (bloch). J. Lake Sci.1995,7(2):173-177. DOI:10.18307/1995.0210 |
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| 摘要: |
| 在实验条件下,圆尾斗鱼优先摄食蚊幼虫和摇蚊幼虫,对食物的选择性明显。同时表明,用数量指标,以选择指数和χ2检验能较客观地、可靠地说明食物选择性的大小。 |
| 关键词: 圆尾斗鱼 食物选择性 蚊幼虫 |
| DOI：10.18307/1995.0210 |
| 分类号: |
| 基金项目:世界卫生组织;世界银行资助(课题编号:880531) |
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| Experimental study on the food selectivity of Macropodus chinensis (bloch) |
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Guo Xianwu, Zhou Jie, Yang Ling
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Huazhong Agricultural University, Wuhan 430070
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| Abstract: |
| Under the experimental conditions, the test that Macropodus chinensis (Bloch) feeds selectively on Rotifera Asplanchna priodonta, Cladocera Daphnia pulex, Copepoda. Mesocyclops sp., mosquito larvae Culex sp. and chironomid larvae Chironomus tentans Fabricms was carried out. The magnitude of food selectivity is measured with Ivlve's index and χ2 value in number and biomass of food organisms. The results show that the selectivity order is:feeding on chironomid larvae and mosquito larvae first, then Cladocera and Copepoda, and finally Rotifera. While the number of these five species in aquria is doubled alternatively, the fish between 0.5 and 4.15g in weight has the identical food selectivity. M. chinensis is a promising species used in controlling the mosquito larvae population because mosquito larvae are easy to be sought by fish in natural condition. To evaluate the food selectivity more objectively, the individual number of food organisms is more suitable than biomass; and Ivlve's index and chi-squared test used simultaneously are better than used separately. |
| Key words: Macropodus chinensis food selectivity culex sp. |
