Laboratory Observations on Predation Activities of Laccophilus Beetles on the Immature Stages of Some Dipterous Pests Found in Missouri Oxidation Lagoons1

Autor:	D. R. Roberts, L. W. Smith, W. R. Enns
Rok vydání:	1967
Předmět:	Laccophilus Larva animal structures biology Ecology media_common.quotation_subject fungi Aquatic animal biology.organism_classification Predation Pupa Insect Science Culex pipiens Instar Reproduction media_common
Zdroj:	Annals of the Entomological Society of America. 60:908-910
ISSN:	1938-2901 0013-8746
DOI:	10.1093/aesa/60.5.908
Popis:	High population densities of 2 dytiscid beetles, Laccophilus fasciatus Aube and L. maculosus Say, occur in some waste-oxidation lagoons in Missouri. These lagoons provide optimal conditions for reproduction to certain dipterous pests, notably mosquitoes and midges. In laboratory studies, adults of both dytiscid species were very active and voracious predators on the immature stages (especially the younger instars) of Culex pipiens L., and Glyptotendipes barbipes (Staeger). Mosquito pupae were less often attacked than larvae. G. barbipes were subject to predation before and during tube construction, when larvae left the tubes, and, as pupae, when they migrated to the water surface for adult emergence. The 2 Laccophilus species differed little in their predaceous capacities, and no difference was found between the sexes of either. Predation occurred to some extent under greatly reduced illumination.
Databáze:	OpenAIRE
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