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作 者 ：周文宗^1,2;钦佩¹

期 刊 ：应用生态学报 2007年 18卷 05期 页码：1171-1174

关键词：黄鳝；

摘 要 ：室内研究了不同盐度(0、2、4、6、8、10和12 g·L^-1)对经过摄食驯化的黄鳝摄食节律和排粪时间的影响.结果表明：盐度对黄鳝的摄食节律没有显著影响（P>0.05），但不同时段的摄食比例存在极显著差异(P<0.01)，每昼夜只有1个摄食高峰期.黄鳝排粪分批次完成，不同盐度下其批次不同.在盐度为0（对照）、2、8、10和12 g·L^-1条件下黄鳝均为3批排粪，在盐度4和6 g·L^-1下排粪批次分别为4批和5批.不同盐度下黄鳝的同批排粪时间均存在极显著差异(P<0.01)，对照组的前3批排粪时间极显著高于其它组(P<0.01)，即对照组前3批排粪相对推迟4～25 h.研究结果将为盐碱、滩涂水域人工养殖黄鳝的摄食管理和水质调控提供理论依据.

Abstract:An indoor experiment was conducted to study the effects of different salinity (0, 2, 4, 6, 8, 10 and 12 g·L^-1) on the feeding rhythm and feces excretion time of feeding-domesticated Monopterus albus. The results showed that salinity had no significant effects (P>0.05) on the feeding rhythm of M. albus, but the proportions of food consumption by M. albus were significantly different (P<0.01) during different time sections.M. albus only had one peak of food consumption during the whole day, and its feces excretion was in batches which varied with salinity. There were three batches of feces excretion at salinity of 0, 2, 8, 10 and 12 g·L^-1, while four and five batches at salinity of 4 and 6 g·L^-1, respectively. At different salinities, the time of the same batch feces excretion was significantly different (P<0.01),e. g. , in control group, the time of first three batches feces excretion was delayed for 4-25 h, compared with that in other groups. These research results would provide theoretic basis for feeding management and water quality control in M. albus culture in saline-alkaline and bottomland water area.

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