Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/61686
Type: Artigo de periódico
Title: Diapause, pupation sites and parasitism of the horn fly, Haematobia irritans, in south-eastern Brazil
Author: Mendes, J
Linhares, AX
Abstract: In order to verify the occurrence of diapause, preference for pupation sites and hymenopteran parasitism, the pupae of the horn fly, Haematobia irritans (Diptera: Muscidae), were collected from undisturbed cattle dung pats in pastures, and adults of the fly were sampled from cattle in Sao Paulo State, south-eastern Brazil, from April 1993 to July 1994. Diapause was verified in 7.7% of pupae sampled from pastures in June and July of 1993 and in 9.9% of those sampled in May, June and July of 1994 (overall rate of 9.1%). Approximately 8.3% of the pupae were parasitized by microhymenopterans, mostly Spalangia nigroaenea and S. cameroni (Hymenoptera: Pteromalidae). Horn fly pupae were found almost exclusively inside the pat or in the soil immediately beneath and adjacent to it, and very few were collected elsewhere. Pupa mortality was 54.4% and did not change significantly during the year, but mortality was greater among pupae collected in pastures when compared to those obtained from experimental pats, lacking natural enemies.
Subject: Haematobia irritans
horn fly
Muscidae
diapause
parasites
pupal mortality
Brazil
Country: Inglaterra
Editor: Blackwell Science Ltd
Rights: fechado
Identifier DOI: 10.1046/j.1365-2915.1999.00155.x
Date Issue: 1999
Appears in Collections:Unicamp - Artigos e Outros Documentos

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