Abstract
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.
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Macháček, J. Indirect effect of planktivorous fish on the growth and reproduction of Daphnia galeata . Hydrobiologia 225, 193–197 (1991). https://doi.org/10.1007/BF00028397
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DOI: https://doi.org/10.1007/BF00028397