Locomotor activity ofTrichogramma brassicae (Hymenoptera) under the influence of high-temperature shocks |
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Authors: | J. Chihrane A. Derrien G. Laugé |
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Affiliation: | (1) Laboratoire de Reproduction, Développement de l’Insecte, Bat. 445, Université de Paris Sud XI, 91405 Orsay Cedex, France;(2) Laboratoire de Biométrie, INRA, 78026 Versailles Cedex, France |
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Abstract: | In order to assess the effects of high temperatures prevailing during the releases ofTrichogramma brassicae Bezdenko parasitoid used against the European corn borerOstrinia nubilalis Hübner, we exposed wasps in the white pupa stage (WP) to single or double shocks (at 35 or 44°C for 6 h) in the laboratory. The locomotor activity of adults in the presence ofO. nubilalis egg masses is greater than in pure air. Single or double shocks at 35°C have little effect on the females. On the contrary, wasps exposed to single or double shocks at 44°C had a lower motility than control wasps. |
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Keywords: | Trichogramma brassicae motility heat shock parasitation efficiency |
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