Size and reproduction in Daphnia magna (Crustacea: Cladocera)
Article first published online: 7 MAY 2010
1954 The Zoological Society of London
Proceedings of the Zoological Society of London
Volume 124, Issue 3, pages 535–545, November 1954
How to Cite
Green, J. (1954), Size and reproduction in Daphnia magna (Crustacea: Cladocera). Proceedings of the Zoological Society of London, 124: 535–545. doi: 10.1111/j.1469-7998.1954.tb07796.x
- Issue published online: 6 JUL 2010
- Article first published online: 7 MAY 2010
- Received 23rd June 1953
- 1In natural populations parthenogenetic egg production in Daphnia magna Straus is directly related to size.
- 2Previous workers have shown that the number of parthenogenetic eggs produced during the life of a female increases in the early broods and decreases in later broods.
- 3Egg production and size are positively correlated in the first adult instar, both under constant conditions and with varying food.
- 4The size of the young liberated varies with maternal age, the third brood consisting of young of a larger average size than earlier or later broods.
- 5The initial size of the young liberated influences the instar in which maturity is reached.
- 6The probable effects of maternal age on growth, maturation and longevity of the young are discussed.