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Ecological studies of Cladocera in the ricefields of Tanjung Karang, Malaysia, subjected to pesticide treatment

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Abstract

Temporal changes in the population densities of four dominant Cladocera (Moina micrura, Diaphanosoma excisum, Alona guttata and Macrothrix spinosa) were studied in untreated and pesticide treated rice plots over a growing season. M. micrura was the first dominant species to occur in all the plots which were initially devoid of vegetation except for the newly transplanted rice seedlings. With the growth of the rice seedlings and the appearance of aquatic macrophytes, open water ricefields were transformed into vegetated littoral conditions precipitating the disappearance of M. micrura and the appearance of the littoral A. guttata and M. spinosa, and the eurytopic D. excisum. The cladoceran community was affected by spraying of the pesticide FMC35001, an analogue of Furadan®. The response of the four dominant species to the pesticide treatment is discussed.

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Lim, R.P., Abdullah, M.F. & Fernando, C.H. Ecological studies of Cladocera in the ricefields of Tanjung Karang, Malaysia, subjected to pesticide treatment. Hydrobiologia 113, 99–103 (1984). https://doi.org/10.1007/BF00026596

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