Tabela de vida de fertilidade de Muscidifurax uniraptor Kogan & Legner (Hymenoptera: Pteromalidae) em pupas de Musca domestica L. (Diptera: Muscidae)

Abstract

Determinou-se em laboratório o potencial de crescimento populacional do parasitóide Muscidifurax uniraptor Kogan & Legner (25±1ºC, 70±10% U.R. e 14h de fotofase). Para isso, 30 fêmeas do parasitóide, com 0 a 24h de idade, foram individualizadas com 15 pupas de mosca doméstica, com 24 a 72h de idade. As pupas foram trocadas diariamente. A sobrevivência dos imaturos de M. uniraptor foi de 97,2%. As fêmeas do parasitóide apresentaram longevidade média estimada em 13,17 dias, com capacidade inata de aumentar em número de 0,22; taxa líquida de reprodução de 119,01; razão finita de aumento de 1,24; tempo médio entre gerações de 21,93 dias e tempo de duplicação da população de 3,18 dias. Estes valores demonstram que M. uniraptor possui alto potencial de crescimento populacional.

Reproductive performance of Palmistichus elaeisis Delvare and LaSalle (Hymenoptera: Eulophidae) with previously refrigerated pupae of Bombyx mori L. (Lepidoptera: Bombycidae)

“…A new genus of Tetrastichinae (Hymenoptera: Eulophidae) from the Neotropical (Hymenoptera: Pteromalidae) presented lower reproductive capacity with pupae of Musca domestica L. (Diptera: Muscidae), cold stored from one to two days in relation to fresh ones. However, this parasitoid had similar or higher reproduction with pupae cold stored for longer periods in relation to the control (Thomazini and Berti-Filho, 1998) such as observed for P. elaeisis with pupae of B. mori after storage during 15 days.…”

“…However, the lack of adequate artificial diets makes it necessary to use large numbers of preferential or alternative hosts to produce these natural enemies (Milward-de-Azevedo et al, 2004). The preservation of hosts at low temperatures for later use without losses on the reproductive caracteristics of parasitoids is important to increase the production of these agents of biological control (Thomazini and Berti-Filho, 1998;Leopold et al, 1998;Floate, 2002;Pratissoli et al, 2003;Milward-de-Azevedo et al, 2004).…”

“…The high parasitism and emergence of individuals of P. elaeisis from pupae of B. mori after storage at 10 °C during all periods is important, showing that low temperatures constitute a strategy to preserve and to increase the availability of this host to be used at the right time to produce parasitoids in mass rearing programs (Thomazini and Berti-Filho, 1998;Leopold et al, 1998;Floate, 2002;Pratissoli et al, 2003;Milward-deAzevedo et al, 2004).…”

Populational parameters of Spalangia endius Walker (Hymenoptera: Pteromalidae) on Pupae of Musca domestica L. (Diptera: Muscidae) treated with two strains of Beauveria bassiana (Bals.) Vuil. (Deuteromycetes)

“…The Standard Errors of Mean (SEM) of each studied populational parameters with α = 0.05, indispensable for the comparison among cohorts, were calculated by the "jackknife" method (Thomazini & Berti Filho 2000, La Rossa & Kahn 2003. The analysis of the demographic parameters, as well as the longevity of mature females of S. endius was carried out through ANOVA and Newman-Keuls test with α = 0.05, using the statistical software STATISTICA' 99 ed., Statsoft Inc., 1999.…”

Population Parameters of Spalangia endius Walker (Hymenoptera: Pteromalidae) on Pupae of Musca domestica L. (Diptera: Muscidae)

“…The confidence intervals of each population parameter estimated with a=0.05, which are indispensable for comparing among cohorts, were computed by the "jackknife" method (Hulting et al 1990, Thomazini & Berti Filho 2000.…”