【摘 要】
：
Populations of Thrips tabaci are known to have two sympatric but genetically isolated reproductive modes,arrhenotoky(sexual reproduction)and thelytoky(asexu
【机 构】
：
Key Laboratory of Plant Protection Resources and Pest Management,Ministry of Education,Northwest A&F
【出 处】
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The International Conference on Insect Molecular Ecology and
论文部分内容阅读
Populations of Thrips tabaci are known to have two sympatric but genetically isolated reproductive modes,arrhenotoky(sexual reproduction)and thelytoky(asexual reproduction).Herein,we report behavioral,ecological and genetic studies to determine whether there is gene transfer from arrhenotokous to thelytokous T.tabaci.Our results demonstrated that arrhenotokous males did not show a preference to mate with females of a particular reproductive mode.Furthermore,there were no behavioral differences between arrhenotokous males mated with arrhenotokous and thelytokous females in their pre-copulation,copulation duration and mating frequency.Gene transfer was detected in progenies from thelytokous females mated with arrhenotokous males using a nuclear gene marker in parallel with a cytoplasmically inherited mitochondrial gene marker.Gene transfer from arrhenotokous T.tabaci to thelytokous T.tabaci was further validated by examining the passage of the arrhenotokous male-originated gene to the F2 generation.These behavioral,ecological and genetic studies documented gene transfer from the sexual arrhenotokous mode to the asextual thelytokous mode of T.tabaci.These results demonstrate that asexual T.tabaci populations may acquire genetic variability from sexual populations,which could complement the long-term disadvantage of asexual reproduction.
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