Population dynamics ofMoina micrura Kurz (Cladocera: Moinidae) inhabiting a eutrophic pond of Madurai (south India)
Population density, composition, age structure and fecundity ofMoina micrura have been studied in a eutrophic pond. The average clutch size of this species ranged from 1–4·4 eggs. The relationship between mean brood size and body length has been established. The volume of parthenogenetic eggs of this cladoceran ranges between 0·2 and 0·9 million μ3 and the adaptive significance of this has been discussed. The mean instantaneous birth rate which preceded maximum density of population resulted in a value of more than one.