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Position: Home > Articles > Effects of salinity on the survival activity index of Pagrosomus major(♀)× Sparus macrocephalus(♂) F_1 larva Fishery Modernization 2008,35 (4) 45-47

盐度对真鲷(♀)×黑鲷(♂)杂交子一代仔鱼活力的影响

作  者:
邱新志;吴雄飞
单  位:
宁波市海洋与渔业研究院
关键词:
真鲷;黑鲷;杂交F1;仔鱼;盐度;不投饵存活系数
摘  要:
比较了不同盐度梯度(5.0、10.0、15.0、20.0、25.0、30.0)下真鲷(Pagrosomus major,♂)×黑鲷(Sparus macrocephalus,♀)杂交子一代(杂交F1)初孵仔鱼的生长情况,并在此盐度梯度下对杂交F1仔鱼进行耐饥饿试验,测定不投饵存活系数(SAI)。结果表明,10.0,15.0,20.0的3个盐度组的仔鱼生长速度最快,这3个盐度组下仔鱼的SAI值也最高,真鲷与黑鲷杂交F1的最适生长盐度为10.0~20.0。当自然海水盐度为20.0以上时,在允许的情况下,适当降低杂交F1仔鱼培育盐度,可以提高苗种的成活率。
译  名:
Effects of salinity on the survival activity index of Pagrosomus major(♀)× Sparus macrocephalus(♂) F_1 larva
作  者:
QIU Xin-zhi1,2,WU Xiong-fei1(1 Ningbo Academy of Ocean and Fishery,Ningbo 315211,China;2 Faculty of Life Science and Biotechnology,Ningbo University,Ningbo 315211,China)
关键词:
Pagrosomus major;Sparus macrocephalus;hybrid;larvae;salinity;survival activity index
摘  要:
Hybrids of Pagrosomus major(♀)and Sparus macrocephalus(♂)were successfully cultured.The effects of seawater salinity on growth rate and survival activity index(SAI) of newly hatched larvae of Pagrosomus major(♀)× Srarus macrocephalus(♂) F1 were researched.The levels of salinity were set as follows: 5.0,10.0,15.0,20.0,25.0,30.0.The same brood of newly hatched larva was used to carry out the experiment.The results showed that: Salinity from 10.0 to 20.0 is suitable for growing;both growth rate and SAI are better than the other levels of salinity(P<0.05).When the salinity of normal seawater is above 20.0,reducing the living salinity properly can improve the vitality and the survival of larva fish.

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