Effects of cumulative parthenogenetic generation and age of amictic female on the reproduction of rotifer Bra-chionus calyciflorus

Abstract

Abstract: Effects of cumulative parthenogenetic generation and age of amictic female on mictic female production and fecundity of the rotifer Brachionus calyciflorus were studied by means of individual culture. The results showed that percentage of total mictic females produced by the parental females in each of four generations increased with the increasing generations. More mictic females were produced from younger maternal amictic females. Amictic offspring from older mothers produced more mictic daughters. There was no significant effect of the cumulative parthenogenetic generation on the mean number of eggs produced by amictic females per life cycle, and no significant effect of the age of amictic female on the mean number of eggs produced by the offspring of amictic female.

Key words: Brachionus calyciflorus, Cumulative parthenogenetic generation, Age, Fecundity, Percentage of mictic female, PERSIANN, TRMM, CMORPH, seasonal variation, performance evaluation, Circum-Bohai-Sea Region

CLC Number:

Q959.181

XI Yilong, HU Haoyuan, GENG Hong, JIN Hongjun, HUANG Xiangfei. Effects of cumulative parthenogenetic generation and age of amictic female on the reproduction of rotifer Bra-chionus calyciflorus[J]. Chinese Journal of Applied Ecology, 2002, (4): 435-438.

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