Mansonia spp. (Diptera: Culicidae) associated with two species of macrophytes in a Varzea lake, Amazonas, Brazil

• Autores: Ruth Leila Menezes Ferreira, Neusa Hamada, Nélia Teresinha Ferreira Har, Eleny da Silva Pereira
• Localización: Entomotrópica: Revista internacional para el estudio de la entomología tropical, ISSN-e 1317-5262, Vol. 18, Nº. 1, 2003, págs. 21-25
• Idioma: español
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• Resumen

  • Mansonia spp. larvae, in association with two species of macrophytes (Eichhornia crassipes and Ceratopteris sp.), were studied. Also, Mansonia spp. larval infection by Trichomycetes fungi was verified. The samples were collected in Camaleão Lake, Amazonas, Brazil, during four different periods of the year: high water, falling water, low water and rising water. A total of 705 Mansonia larvae were collected; 26% were in the 1st to 3rd instars and 74% were in the 4th instar. E. crassipes had higher numbers of Mansonia spp. larvae (n = 623) than Ceratopteris sp. (n = 82). Four Mansonia species were collected (M. humeralis, M. indubitans, M. amazonensis and M. titillans); the first of these was the most abundant species in the four sampling periods and in both plant species studied. Trichomycetes fungi were not observed infecting the digestive tracts of the dissected Mansonia spp. larvae (n = 190).