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Response to Selection for a High or a Low Sex Ratio in Wolbachia-infected Lines of Trichogramma cordubensis Subjected to High Temperature

Trichogramma cordubensis is an egg parasitoid completely infected by endosymbiotic bacteria belonging to the Wolbachia genus and inducing the thelytokous mode of reproduction. Previous results showed that the thelytoky persistence at high temperature is genetically variable. Experimental selecti...

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Bibliographic Details
Main Authors: Pintureau, B., Bolland, P.
Format: Article
Language:English
Published: Інститут зоології ім. І.І. Шмальгаузена НАН України 2001
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Online Access:http://dspace.nbuv.gov.ua/handle/123456789/9551
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Summary:Trichogramma cordubensis is an egg parasitoid completely infected by endosymbiotic bacteria belonging to the Wolbachia genus and inducing the thelytokous mode of reproduction. Previous results showed that the thelytoky persistence at high temperature is genetically variable. Experimental selection was performed to confirm these results and to determine the possibilities of adaptation to the environment assuming cyclic bisexual reproduction. No selection was efficient and the genetic variability of the sex ratio at high temperature is probably lower than previously assumed. This reduces the adaptive possibilities in the studied Trichogramma species.