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).
Résumé
Les Hyménoptères et les Acariens à reproduction arrhénotoque renferment beaucoup d'ennemis naturels importants. Ce système de reproduction offre l'occasion de sélection sur les mâles hémizygotes, avec les avantages afférents d'un génotype non masqué totalement exposé à la sélection, d'une fréquence augmentée de génotypes exprimant des gènes rares et d'une discrimination accrue de caractères dans les populations mâles produites par les femelles vierges. Une intensité de sélection amplifiée et une dérive génétique réduite peuvent offrir des avantages supplémentaires. La méthode est limitée aux caractères affichés par les mâles et peut réclamer des techniques intensives de laboratoire et une recherche d'espèce spécifique. On a montré que cette méthode est utilisable avecAphytis holoxanthus DeBach (Hym.: Aphelinidae), parasite important du Pou de Floride,Chrysomphalus aonidum (L.) (Hom.: Diaspididae).
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Havron, A., Rosen, D., Rössler, Y. et al. Selection on the male hemizygous genotype in arrhenotokous insects and mites. Entomophaga 32, 261–268 (1987). https://doi.org/10.1007/BF02373249
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DOI: https://doi.org/10.1007/BF02373249