Selection on the male hemizygous genotype in arrhenotokous insects and mites |
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Authors: | Abraham Havron David Rosen Yoran Rössler Josef Hillel |
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Institution: | (1) Faculty of Agriculture, The Hebrew University, 76100 Rehovot, Israel;(2) Citrus Marketing Board, Israel Cohen Institute for Biological Control, 76345 Rehovot, Israel |
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Abstract: | Arrhenotokously reproducing Hymenoptera and Acarina include many important natural enemies. This reproductive system offers
the opportunity of selection on hemizygous (♂ ♂), with the attendant advantages of an unmasked genotype fully exposed to selection,
in creased frequency of genotypes expressing rare genes, and enhanced discrimination of characters, in all-♂ populations produced
by virgin (♀ ♀). Increased selection intensity and reduced genetic drift may offer additional advantages. The method is limited
to characters displayed by (♂ ♂), and may require labor-intensive techniques and species-specific research. The method has
been shown to be practicable withAphytis holoxanthus DeBach (Hymenoptera: Aphelinidae), an important parasite of the Florida red scale,Chrysomphalus aonidum (L.) (Homoptera: Diaspididae).
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Keywords: | Aphytis arrhenotoky biological control haplo-diploidy selection |
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