Influence des lignées HD1 (Bacillus thuringiensis sp. kurstaki) sur les étapes du développement de Diadegma sp. (Hym., Ichneumonidae), parasitoïde de Plutella xylostella (Lep., Yponomeutidae)
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
| Main Authors: | , |
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| Format: | article biblioteca |
| Language: | eng |
| Subjects: | H10 - Ravageurs des plantes, F62 - Physiologie végétale - Croissance et développement, Diadegma, Bacillus thuringiensis, développement biologique, cycle de développement, longévité, survie, http://aims.fao.org/aos/agrovoc/c_29912, http://aims.fao.org/aos/agrovoc/c_761, http://aims.fao.org/aos/agrovoc/c_921, http://aims.fao.org/aos/agrovoc/c_4317, http://aims.fao.org/aos/agrovoc/c_4428, http://aims.fao.org/aos/agrovoc/c_7538, |
| Online Access: | http://agritrop.cirad.fr/401080/ http://agritrop.cirad.fr/401080/1/401080.pdf |
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