Resumo
This study reports the occurrence of Nasonia vitripennis (Walker) (Hymenoptera: Pteromalidae) as parasitoid of Cyrtoneurina pararescita (Diptera: Muscidae) (Couri, 1995) in bovine feces obtained in Goiânia, Goiás state, Brazil. Bovine manure samples, collected at two weeks intervals, were taken to the laboratory and the pupae were extracted by water flotation. Each pupa was placed in capsules of gelatin until the emergence of dipterous or their parasitoids. The parasitism percentage was of 2.4%. This paper reports the first occurrence of N. vitripennis as parasitoid of C. pararescita worldwide.
Assuntos
Animais , Controle Biológico de Vetores , Inseticidas , Muscidae/parasitologia , Saúde Pública VeterináriaResumo
RESUMO Este estudo relata a ocorrência de superparasitismo em pupas de Cyrtoneurina pararescita Couri (Diptera: Muscidae) pelo parasitóide Spalangia nigroaenea Curtis (Hymenoptera: Pteromalidae) em fezes bovinas em Itumbiara, Goiás, Brasil. Amostras de fezes foram coletadas em intervalos de duas semanas de sua exposição no campo, levadas para o laboratório para extração das pupas pelo método de flutuação. As pupas foram individualizadas em cápsulas de gelatina e mantidas até a emergência das moscas e/ou parasitóides. Foram coletadas duas pupas de C. pararescita, das quais de cada uma emergiram 2 parasitóides pertencentes a espécie S. nigroaenea. Este é o primeiro relato de superparasitismo de S. nigroaenea em pupas de C. pararescita em fezes bovinas no Brasil.
ABSTRACT This study reports the occurrence of superparasitism in pupae of Cyrtoneurina pararescita Couri (Diptera: Muscidae) by the parasitoid Spalangia nigroaenea Curtis (Hymenoptera: Pteromalidae) in bovine dung in Itumbiara, Goias, Brazil. Manure samples, collected at two intervals, were taken to the laboratory and the pupae were extracted by water flotation. The pupae were placed in gelatin capsules until the emergence of flies or their parasitoids. Parasitoids of the species S. nigroaenea emerged from two of the pupae. This is the first report of superparasitism by S. nigroaenea in pupae of C. pararescita in bovine dung in Brazil.
Resumo
Four hymenopterous parasitoids were found from Cyrtoneurina pararescita Couri pupae: Spalangia cameroni Perkins, Spalangia endius Walker, Spalangia nigroaenea Curtis ans Spalangia sp. The predominant parasitoids of C. pararescita was S. nigroaenea. These parasitoids accounted for 0.63 per cent of the parasitism