| 摘要: |
| 观察了真鲷(Pagrosomus major)对4 种不同结构模型礁的行为反应, 并对不同结构模型礁的诱集效果进行了比较, 进而选择诱集效果最好的1 种模型礁, 研究该模型礁在不同光强下诱集效果的差异。实验结果表明: 未投放礁时, 真鲷在水槽中的分布无选择性, 呈随机分布; 而投礁后各种模型礁均能对真鲷产生诱集效果, 真鲷在鱼礁标志区的分布率从6 %提高到17.89%～21.50 % , 其中以表面积大且无孔的D 型模型礁的诱集效果最好; 双模型礁投放后对真鲷的聚集率均在20%以上, 其中表面积大且有孔的2 个模型礁聚集率最大; 随光强增强, 真鲷的聚集率不断下降, 研究发现这可能与真鲷的领域行为有很大关系。 |
| 关键词: 鱼礁模型 真鲷(Pagrosomus major) 诱集效果 光照强度 |
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| 基金项目:山东省科技发展计划项目(2011GHY11524); 国家科技支撑计划项目(2006BAD09A05) |
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| The attractive effects of several artificial reefs on Pagrosomus major |
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| Abstract: |
| The behavior and distribution of four different artificial reef models for Pagrosomus major and the attractive effects in different light intensities were studied in this paper. The results indicated that the distribution of P. major was random when the reef model did not exist, and the distribution ratio in marked area was 6 %. When the reef models were put in the center of the tank, P. major showed a distinct preference. The distribution ratio of P. major in reef marked area increased to a high level (17.89 %～21.50 %), and the reef model D had the highest distribution ratio. When the same kind of reef model was put in the tank doubly, the attractive ratio of P. major in reef marked area increased (all above 20%). When the light intensity increased over the tank, the attractive ratio of P. major decreased continuously which was related to its territorial behavior. |
| Key words: Artificial reef model Pagrosomus major attraction effect light intensity |
