Influence des lignées HD1 (Bacillus thuringiensis sp. kurstaki) sur les étapes du développement de Diadegma sp. (Hym., Ichneumonidae), parasitoïde de Plutella xylostella (Lep., Yponomeutidae)

Monnerat Rose G., Bordat Dominique. 1998. Influence des lignées HD1 (Bacillus thuringiensis sp. kurstaki) sur les étapes du développement de Diadegma sp. (Hym., Ichneumonidae), parasitoïde de Plutella xylostella (Lep., Yponomeutidae). Journal of Applied Entomology, 122 : 49-51.

Titre anglais : Influence of HD1 (Bacillus thuringiensis ssp. kurstaki) on the developmental stages of Diadegma sp. (Hym., Ichneumonidae) parasitoid of Plutella xylostella (Lep., Yponomeutidae)

Résumé : Laboratory experiments have shown that HD1 strain of #Bacillus thuringiensis# Berliner has adverse effects on #Diadegma# sp. Young larvae of #Plutella xylostella# (L.), the diamondback moth (DBM), were killed by #B. thuringiensis# when the larvae were parasitized by #Diadegma# for only a short time (less than two days). Larvae were parasitized for more than two days before adding the bacterium, however, they decreased their foliar consumption (35% less) and therefore consumed fewer spores of #B.thuringiensis#. The low mortality of the DBM allows the parasitoid to finish its development. The presence of HD1 does not affect the F1 generation of #Diadegma# sp. There are no significant differences in the time of the larval stage and pupal development, sex-ratio, longevity of adults and percentage of parasitism between adults from HD1 infected or non-infected larvae

Mots-clés Agrovoc : Diadegma, Bacillus thuringiensis, développement biologique, cycle de développement, longévité, survie

Classification Agris : H10 - Ravageurs des plantes
F62 - Physiologie végétale - Croissance et développement

Auteurs et affiliations

• Monnerat Rose G.
• Bordat Dominique, CIRAD-AMIS-PROTECTION DES CULTURES (FRA)

Source : Cirad - Agritrop (https://agritrop.cirad.fr/401080/)

Métriques

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