温度在饲育条件下对Semisulcopira decipiens的产仔数和稚贝生长的影响

Effects of The Newborn of Semisulcospira decipiens Reared Under Laboratory Condition

在饲育条件下研究了S．decipiens的产仔数和稚贝生长及与水温的关系。结果表明:水温在上升期和下降期,新生贝和稚贝的生长速度较快,产仔数也较多,成体贝在水温17℃-31℃时,都可以产生新生贝,以21℃-25℃时产出较多,在高温条件下,成体贝的生长速度缓慢。

Grow the rate of newborn S. decipiens reared.for 10 months under laboration conditions andunder different water temperaturo were studied. The results Obtained show that the newborns in S.decipiens occurred at a water temperature ranging from 17 to 31℃. Numbers of newborn S. decipienswere produced reratively abundant when the water femperature was in the 21-25℃ range. Growthrates were small in emperature above 25℃.