Data/hora: 12/06/2024 00:48:47

Provedor de dados: | 92
País: | Brazil
Título: | Exposure of a single host (Chrysomya megacephala) (Calliphoridae) to different quantities of female parasitoids (Nasonia vitripennis) (Pteromalidae)
Autores: | Mello,Renata S.; Borja,Gonzalo E. Moya; Aguiar-Coelho,Valéria M.
Data: | 2009-12-01
Ano: | 2009
Palavras-chave: | Biological control; Blowflies; Parasitoids.
Resumo: | The aim of this study was to verify the duration of the development period, number of parasitoids produced per pupa, parasitism rate and sex ratio of Nasonia vitripennis (Hymenoptera, Pteromalidae), when they were exposed to a single host: Chrysomya megacephala (Diptera, Calliphoridae). One pupa was exposed in glass tubes to different numbers of female parasitoids (1, 3, 5, 7, 9 and 11) during 48 h. Twenty replications/treatment were used, under controlled conditions (T= 27 °C day/ 25 °C night, 60 ± 10% RH). Statistical analysis of the data was made using the ANOVA test and the "a posteriori" comparisons were made using the Tukey-HSD test (both tests with a significance level of 5%). The duration of the development period was longer in treatments where a higher density of females per host was used. When five females per host were used, the mean number of parasitoids that emerged per pupa was higher. The data showed a tendency to a decrease in the amount of parasitoids emerged per host, especially of female, when used high quantities of female per host. Higher parasitism rates were observed in the 3:1 and 5:1 treatments and an increase in the percentage of unviable pupae was observed, probably due to an increase of female densities in the treatments, possibly a consequence of superparasitism.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262009000400019
Editor: | Sociedade Brasileira De Entomologia
Relação: | 10.1590/S0085-56262009000400019
Formato: | text/html
Fonte: | Revista Brasileira de Entomologia  v.53 n.4 2009
Fonte: | info:eu-repo/semantics/openAccess