多刺裸腹溞在不同盐度下的种群增长参数及其驯化

留言板

尊敬的读者、作者、审稿人, 关于本刊的投稿、审稿、编辑和出版的任何问题, 您可以本页添加留言。我们将尽快给您答复。谢谢您的支持!

姓名

邮箱

手机号码

标题

留言内容

验证码

PRINCIPAL PARAMETERS OF POPULATION GROWTH AND SEAWATER ACCLIMATION OF MOIAN MACROCOPA STRAUS AT DIFFERENT SALINITY AND FOOD CONDITIONS

摘要: 在25±1℃及小球藻、酵母、牛粪+稻草+沃土3种食物条件下,研究了多刺裸腹在海水盐度为2‰、3‰、4‰、6‰和淡水5个浓度下的种群增长参数。实验表明：无论投喂何种食物,在淡水至4‰盐度范围内,多刺裸腹种群的内禀增长率(rm无显著差异为0.725-1.070(d-1);净增殖率(R0)以小球藻组平均数最高为55.13(ind);世代时间(T)以酵母组最长,平均为5.38(d)。6‰为多刺裸腹的生殖盐度上限。经过短期的海水驯化,其生殖的盐度上限可达9-10‰。

Abstract: The principal parmeters of population growth of Moina macrocopa were studied by establishing the life table at 25 ±1℃ and under three kinds of food and four concentrations of seawater salinities.The intrinsic rate of increase (rm) showed no difference in freshwater- 4‰ and at three kinds of food.The net reproductive rate (R0) was the highest when fed with Chlorella (average 56.18ind.), and the generation time (T) was the longest when fed with yeast (average 5.38d).The lethal upper salinity limit of reproduction was 6‰ and after short-term acclimation, was 9-10‰.