Philippine species of Mesocyclops (crustacea: Copepoda) as a biological control agent of Aedes aegypti (Linnaeus)

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Dengue Bulletin


The predatory capacity of two local populations of Mesocyclops aspericornis (Daday) and Mesocyclops ogunnus species were evaluated, for the first time in the Philippines, as a biological control agent for Aedes aegypti (L) mosquitoes. Under laboratory conditions, Mesocyclops attacked the mosquito first instar larvae by the tail, side and head. The mean of first instar larvae consumed by M. asperocornis and M. ogunnus were 23.96 and 15.00, respectively. An analysis of the variance showed that there was a highly significant difference between the mean number of first instar mosquito larvae consumed by M. aspericornis and by M. ogunnus, which indicated that the former is a more efficient predator of dengue mosquito larvae. The results of the small-scale field trials showed that the mean number of surviving larvae in experimental drums was 63.10 and in control drums was 202.95. The Student t-test of means indicated that there was a significant difference between the mean number of surviving larvae in the drums with and without M. aspericornis. The findings indicated that M. aspericornis females were good biological control agents, for they destroyed/consumed about two-thirds of the wild dengue mosquito larvae population.

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