【摘要】 本文叙述了在室内控制条件下,温度和盐度单因子及其结合对缢蛏浮游幼虫的影响。缢蛏浮游幼虫生长发育的适温范围为17°—32℃,其中以25°—27℃为最好。对高温和低温有较强的耐力,致死温度的上限为40℃左右,变态的下限水温为15℃左右,幼虫适盐范围是4.50—28.30‰,其中以12.40‰为最适宜,但幼虫对低盐度的耐力比对较高盐度的耐力强。 温度对缢蛏浮游幼虫期的长短、增长速度和存活率的影响,要比盐度对它的影响显著,而盐度对缢蛏幼虫变态率的影响却比温度重要些。温度与盐度对缢蛏浮游幼虫发育影响的相关性不明显。更多还原

【Abstract】 Single and combined effects of temperature and salinity on the growth and development of the larvae of Sinonovacula constricta (Lamarck), hava been studied in the laboratory. The results obtained show that the temperature range from 17℃ to 32℃ is suitable for growth and development of larvae and 25℃ to 27℃ is the optimum temperature. The larvae show strong tolerance to hign and low temperatures. The lethal critical temperature is about 40℃. The lower critical temperature for metamorphosis is about 15℃. The suitable salinity for growth and development of larvae is in the range of 4.5% to 28.30%, and 12.40% is the optimum. The larvae show stronger tolerance to low salinity than to high salinity.The effects of temperature on the duration of larvae stage the increasing of body weight per day and survival rate of larvae are more evident than that of salinity, yet, the effects of salinity on the rate of hplometamorphosis are more important than that of temperature. The interaction of temperature and salinity on the growth and development of larvae is not obrious.更多还原