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Biology of Octomyomermis muspratti, a parasite of mosquitoes as it relates to mass production

, : Biology of Octomyomermis muspratti, a parasite of mosquitoes as it relates to mass production. Journal of Invertebrate Pathology, 30(2): 155-159

First- and second-instar larvae of Culex pipiens fatigans Wied. (p. quinquefasciatus auct.) were found in laboratory studies in Louisiana to be equally susceptible to parasitism by the mermithid nematode Octomyomermis muspratti; third-instar larvae were significantly less susceptible. The yield of post-parasitic nematodes was higher from hosts exposed as second-instar larvae than from those exposed as first- or third-instar larvae at comparable levels of parasitism. Mortality of the host prior to emergence of the nematode occurred most frequently among first- and third-instar larvae. About 4% of infected hosts exposed as first- and second-instar larvae and 37% of those exposed as third-instar larvae pupated prior to emergence of the post-parasitic nematodes. Exposure of mosquitoes as second-instar larvae was the best for mass-rearing and resulted in the highest yields of post-parasitic nematodes.


PMID: 908837

DOI: 10.1016/0022-2011(77)90213-0

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