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Publicação
Estudo da aceitação e adequabilidade dos ovos de algumas espécies de noctuídeos como hospedeiros de Trichogramma sp. (Hymenoptera: Trichogrammatidae)
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Orientador(es)
Resumo(s)
The acceptance and suitability of a species of Trichogramma captured in a processing tomatoes field in a tract of
marshy land alongside a river, in Vila Franca “lezíria”, of the eggs of four species of noctuids (Helicoverpa
armigera, Thysanoplusia orichalcea, Autographa gamma e Chrysodeixis chalcites) is studied in a preliminary trial.
The specificity of the Trichogramma species towards the key pest of tomato, H. armigera, is evaluated, as well as
the potential of other noctuids present in the processing tomato ecosystem as its alternative hosts.
Acceptance is evaluated offering eggs of the four species of noctuids to Trichogramma sp. females while
suitability is inferred from the biological traits of the progeny.
In spite of the small differences between hosts, it is observed that all the hosts evaluated are readily accepted
to parasitism by Trichogramma sp. females, and are suitable to parasitoid development. This species of
Trichogramma does not seem to show specificity towards H. armigera, which suggests the importance of the
remaining lepidopterans as parasitoid hosts in the field.
Descrição
Palavras-chave
trichogramma helicoverpa armigera thysanoplusia orichalcea autographa gamma chrysodeixis chalcites host acceptance host suitability aceitação do hospedeiro adequabilidade do hospedeiro
Contexto Educativo
Citação
Encontro Nacional de Protecção Integrada, 6º, Castelo Branco, 2003