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Natural enemies of neochetina bruchi and neochetina eichhorniae 2 weevils from water hyacinth in argentina


Natural enemies of neochetina bruchi and neochetina eichhorniae 2 weevils from water hyacinth in argentina



Annals of the Entomological Society of America 75(2): 115-118



ISSN/ISBN: 0013-8746

Populations of N. eichhorniae Hustache (Coleoptera: Curculionidae) were 40-60% infected by nematodes (Metaparasitylenchus sp.), 7-22% by a microsporidian (Nosema sp.), 4% infested with mites (Histiostoma sp. and Lasioseius sp.) and attacked by various anthropod predators in Argentina. Populations of N. bruchi Hustache were 1-3% infected with nematodes or microsporidians and 19% infested with mites. The mites were found only during the summer, but microsporidia and nematodes were found throughout most of the year. [Both N. eichhorniae and N. bruchi have been released in the USA for biological control of water hyacinth. Introduction of infected weevils into the USA might reduce control of waterhyacinth.].

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Accession: 005958237

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