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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。
This article describes the effects of single temperature and salinity factors and their combination on planktonic larvae under laboratory conditions. The optimum range for the growth and development of plankton larvae is 17 ° -32 ° C, with 25 ° -27 ° C being the best. The maximum lethal temperature is about 40 ℃, the minimum temperature of metamorphosis is about 15 ℃, and the suitable salt range of larvae is 4.50-28.30 ‰, of which 12.40 ‰ is the most suitable, but the larvae to low Salinity endurance than the higher salinity endurance. The effect of temperature on the length, growth rate and survival rate of catfish larvae was more significant than that of salinity. However, the salinity affected the rate of cataplasm larvae more than the temperature. The correlation between temperature and salinity had no significant effect on the development of larvae.