| 尼罗罗非鱼对两种网目定置网片反应特性的比较 |
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| 引用本文： | 蔡厚才,何大仁.尼罗罗非鱼对两种网目定置网片反应特性的比较[J].台湾海峡,1991,10(4):380-385. |
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| 作者姓名： | 蔡厚才 何大仁 |
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| 作者单位： | 浙江水产学院渔业工程系，厦门大学海洋系，厦门大学海洋系，厦门大学海洋系 舟山 316101，厦门 361005，厦门 361005，厦门 361005 |
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| 基金项目： | 福建省自然科学基金，农牧渔业部鱼类行为学研究资助项目 |
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| 摘 要： | 本文就尼罗罗非鱼对两种网目(12.6和8.4cm)定置网片的反应特性进行了比较研究。结果表明:在两网片邻近区域内的分布尾次数较中间区域为少;随着时间推移,其分布重心有移向大网目网片一侧的倾向。此外,罗非鱼对两种网目网片的趋网、碰网、穿网尾次数及趋网、碰网、穿网时刻也有一定的差异。
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| 关 键 词： | 罗非鱼 网目 网片 定置 反应 |
A Comparison of the Reaction of Tilapia niloticus to Two Sizes of Mesh Netting |
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| Cad Houcai.A Comparison of the Reaction of Tilapia niloticus to Two Sizes of Mesh Netting[J].Journal of Oceanography In Taiwan Strait,1991,10(4):380-385. |
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| Authors: | Cad Houcai |
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| Abstract: | This paper compares the reaction of Tilapia to two mesh sizes of netting. The results show: the distribution of the fish near the two nets is smaller than in the middle region. As time goes on, the distribution tends to move toward the net with the larger mesh. In the early period, the fish taxis toward the net with the 8.4cm is greater than toward the net with the 12.6cm net. The relationship reverses in the later period. The number of times the fish touches the s(?)aller mesh is normally less than for the larger mesh. The number of fish passing through the 12.6 mesh net is 52 times per hour; but the number of the fish passing through the 8.4 mesh net is 0. The ratio between the number of net touches and taxis is usually greater for the larger mesh net size than for the smaller size. The ratio between the number of net pass-throughs and net touches for the 12.6cm mesh is clearly higher than the ratio between the relevant number of pass-throughs and net taxis. The time of net taxis for the 12.6cm mesh net for the first three taxises is slightly longer than that for the 8.4cm net size. But the time of net touches for the former is clearly less than for the latter. The time differences between net touches and net taxises for the 12.6cm mesh size are considerably smaller, but the time differences between net pass-throughs and net touches are relatively greater. The time for the differences between net touches and net taxises for the 8.4cm mesh are greater still. |
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| Keywords: | Reaction two mesh size net tilapia marine zoophysiology |
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