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中文摘要：
在水温7.5~10.6℃、溶氧6.24~8.69mg/L条件下,进行不同比例(4:1、2:1、1:1、1:2、1:4)的哲罗鲑Hucho taimen与日本金鳟Oncorhynchus mykiss混养试验,以优化哲罗鲑与日本金鳟的养殖模式。结果表明:哲罗鲑养殖过程中,混养适当比例的日本金鳟可以有效地提高哲罗鲑的存活率,而日本金鳟养殖中混养哲罗鲑对日本金鳟的存活有一定抑制;各混养组鱼的存活率随哲罗鲑比例的增大而降低。哲罗鲑养殖中,混养一定比例的日本金鳟有利于促进哲罗鲑稚鱼的生长,其中混养比例以200:100和150:150为最佳,存活率可达90.56%,体质量增长率分别为979.87%和1124.18%。混养时,对哲罗鲑与日本金鳟的摄食与行为有一定影响,对日本金鳟生长的影响未达到显著水平(P】0.05)。试验结束时,哲罗鲑与日本金鳟稚鱼体长、体质量变异系数的变化规律一致,其中日本金鳟体长、体质量变异系数随哲罗鲑混养比例增大而增大。
英文摘要：
A polyculture of taimen Hucho taimen and Albino rainbow trout Oncorhynchus mykiss was conducted at different stocking ratios(4:1, 2:1, 1:1, 1:2, and 1:4) at water temperature of 7.5~10.6℃and dissoluble oxygen level of 6.24~8.69mg/L in order to optimize the cultivation model of taimen and albino rainbow trout. The result showed that the polyculture of taimen with albino rainbow trout at a proper ratio resulted in increase in survival rate of taimen. However, the survival rate of albino rainbow trout was found to be decreased in the polyculture of albino rainbow trout with taimen. The total survival rate was decreased as the increase in ratio of taimen in both polyculture of taimen with Albino rainbow trout and polyculture of albino rainbow trout with taimen. As high as survival rate of 90.56%and weight gain rate of 979.87%and 1124.18%were observed at a ratio of 200:100 and 150:150 in the polyculture of taimen with albino rainbow trout, in which the growth of albino rainbow trout was not significantly influenced by taimen (P>0.05), though the predation and behavior of both taimen and albino rainbow trout were affected by the polyculture. During the whole experiment, the variation coef-ficients of body length and body weight in both taimen and albino rainbow trout were manifested the same change trend, the variation coefficients of body length and body weight in albino rainbow trout being increased as increase in the ratio of taimen.
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