南海区4种鲷鱼精子的适盐性比较

研究了盐度对黄鳍鲷SparuslatusHouttuyn、平鲷Rhabdosargussarba（Forskal）、黑鲷Sparusmacrocephalus（Basilewsky）和真鲷Pagrsomusmajor（TemmincketSchlegel）4种鲷鱼精子活力的影响。对南海区4种鲷鱼精子的适盐性及其活力进行了比较，黄鳍鲷、平鲷、黑鲷和真鲷精子激活所需的最低盐度分别为8、10、＞8、＞10；激活的最适盐度则分别为21、22、25、25，与之相应的精子活动（涡动）时间分别为14．7、17．7、17．2、18．0min；在高盐条件（盐度40左右）下，黄鳍鲷精子的适应性最强，精子活力最好，其次是黑鲷、真鲷的精子，平鲷精子对高盐条件的适应性最差。

Comparative study on the Adaptive Salinity Ranges for Activating Spermatozoa of Four Sparidae Fishes from South China Sea

The effect of salinity on motility of spermatozoa of four Sparidae fishes, yellowfin bream Sparus latus Houttuyn, silver bream Rhabdosargus sarba (Forskal), black porgy Sparus macrocephalus (Basilewsky) and red seabream Pagrosomus major (Temminck et Schlegel) from South China Sea was studied in recent years. The comparison on the adaptive salinity ranges for activating spermatozoa of these species was made. It was found that the lowest activating salinity of each of spermatozoa of yellowfin bream, silver bream, black porgy and red seabream should be 8, 10, >8, >10 at least respectively. The optimum activating salinity of each of them was 21, 22, 25, 25 successively. when the activating salinity was about 40, the adaptability of spermatozoa of yellowfin bream was the best among these four species, and the silver bream's was the worst.