摘要: |
对多齿围沙蚕(Perinereis nuntia Savigny)亲体的培养条件进行了研究。结果表明:多齿围沙蚕的适宜培养温度为16~32℃,盐度为25~32。培养时以粉末饵料为佳,16~32℃摄食活泼,摄食时间为15~20 min,16℃以下摄食量减少,12℃以下基本不摄食。在19~20℃、保持潮湿条件下,可存活28d。异沙蚕体形成与温度有关,特别是在经历了一定的低温期(2~4℃)后,再提高温度至18~25℃,可以有效地促进异沙蚕体形成。在人工养殖情况下,异沙蚕体的形成及群浮并未出现半月相型规律,成熟后只要有微弱的光照,任何时间加水覆盖水槽均可见到异沙蚕体群浮。
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关键词: 多齿围沙蚕Perinereis nuntia Savigny 亲体培育 生态条件 |
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基金项目:山东省自然科学基金资助项目(Y2006D29) |
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Parent culture of the Perinereis nuntia Savigny |
DU Rong-bin,WANG Ai-min,LI Deng-lai,ZHENG Jia-sheng,SONG Zhen-li,YU Shan-qing
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Abstract: |
The ecological conditions of parent culture of Perinereis nuntia Savigny were studied. The results show: that the optimal temperature range for parent culture is 16~32℃, and the salinity is 25~32. Perinereis nuntia Savigny ingested food lively within the temperature of 16~32℃, the feeding time was 15~20 min, and powder food is the best for parent culture. Food intake reduced when the temperature was below 16℃, and no food was ingested generally below the temperature of 12℃. It could survive for 28 days under humid conditions in the temperature range of 19~20℃. The appearance of heteronereis is related to temperature, especially after a period of relatively low temperature, and the quantity of heteronereis increase evidently with temperature increased to 18~25℃. Under artificial cultivation circumstances, the appearance of heteronereis and the swarming behaviour did not show a semiluar phase law. For the mature individuals, if only there is weak illumination, the heteronereis will swarm at every time with the sink being full of water.
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Key words: Perinereis nuntia Savigny parent culture ecological conditions |