INDIRECT EFFECT OF PLANKTIVOROUS FISH ON THE GROWTH AND REPRODUCTION OF DAPHNIA-GALEATA
INDIRECT EFFECT OF PLANKTIVOROUS FISH ON THE GROWTH AND REPRODUCTION OF DAPHNIA-GALEATA
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DOI：
10.1007/bf00028397
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发表时间：
1991-11-01
期刊：
影响因子：
2.6
通讯作者：
MACHACEK, J
中科院分区：
文献类型：
--
作者：
MACHACEK, J
在Y-O-Y蟑螂居住24小时的水体中饲养的初生水蚤个体的大小和平均卵体积均小于在不含鱼类的相同水体中饲养的对照动物。实验初产的体积较小是由于某些阶段的增量较小，并且大约三分之二的初产动物在第4阶段成熟，而其余的实验动物和所有对照动物在第5阶段成熟。与相同大小的对照组相比，实验中有更大的窝和更小的蛋，但这种差异尚未被证明具有统计学意义。
Both the size of Daphnia galeata primiparae and the average egg volume were smaller in individuals reared from neonata in water inhabited for the preceding 24 hours by Y-O-Y roach when compared with control animals reared in the same water with the exclusion of fish. The smaller size of experimental primiparae resulted from smaller increments in some instars and from the earlier maturation of about two-thirds of those that matured in the 4th instar, while the rest of the experimental animals and all the controls matured in the 5th instar. There were larger clutches and smaller eggs in experimentals when compared with the similar sized controls, but the difference hasn't proved to be statistically significant.