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GROWTH REPRODUCTION AND POPULATION GROWTH OF CERIODAPHNIA-CORNUTA SARS AND COMPARISON OF 7-DAY FECUNDITY WITH CERIODAPHNIA-DUBIA RICHARD
ZHUANG D; INST HYDROBIOL, ACAD SINICA, WUHAN
1989
Source PublicationChinese Journal of Oceanology and Limnology
ISSN0254-4059
Volume7Issue:2Pages:105-111
AbstractBiology of parthenogenetic females of Ceriodaphnia cornuta Sars was studied under laboratory conditions. The mean length of neonates (first-young instars) of Ceriodaphnia cornuta was found to be 0.27 mm at 25 .+-. 1.degree. C and that of the first adult instars 0.50 mm. A maximum length of 0.69 mm was attained at the 8th adult instar. The mean longevity was found to be 19.0 days for 3 preadult and 8 adult instars. Sex maturity was reached in 4.26 days. The mean number of young per brood was 6.21. The total production for each adult reached 49.7. The maximum reproduction period occurred during the 4th adult instar. At this age, the animals were 10.25 days old, and had a body length on 0.65 mm. The innate capacity for increase (rm) was 0.40 per female per day, the net reproduction rate (R0) was 33.601 per generation, the mean length of a generation (T) was 8.786 days, and the finite rate for increase (.lambda.) was 1.492 per female per day. Comparisons using the t-test indicated that the number of eggs produced and number of broods of C. cornuta and C. dubia were not significantly different (p > 0.05) after 7 days.
Indexed By其他
Document Type期刊论文
Identifierhttp://ir.ihb.ac.cn/handle/342005/17681
Collection期刊论文
Corresponding AuthorZHUANG D; INST HYDROBIOL, ACAD SINICA, WUHAN
Recommended Citation
GB/T 7714
ZHUANG D,INST HYDROBIOL, ACAD SINICA, WUHAN. GROWTH REPRODUCTION AND POPULATION GROWTH OF CERIODAPHNIA-CORNUTA SARS AND COMPARISON OF 7-DAY FECUNDITY WITH CERIODAPHNIA-DUBIA RICHARD[J]. Chinese Journal of Oceanology and Limnology,1989,7(2):105-111.
APA ZHUANG D,&INST HYDROBIOL, ACAD SINICA, WUHAN.(1989).GROWTH REPRODUCTION AND POPULATION GROWTH OF CERIODAPHNIA-CORNUTA SARS AND COMPARISON OF 7-DAY FECUNDITY WITH CERIODAPHNIA-DUBIA RICHARD.Chinese Journal of Oceanology and Limnology,7(2),105-111.
MLA ZHUANG D,et al."GROWTH REPRODUCTION AND POPULATION GROWTH OF CERIODAPHNIA-CORNUTA SARS AND COMPARISON OF 7-DAY FECUNDITY WITH CERIODAPHNIA-DUBIA RICHARD".Chinese Journal of Oceanology and Limnology 7.2(1989):105-111.
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