TAILIEUCHUNG - Báo cáo sinh học: "The genetic properties of homosexual copulation behaviour in Tribolium castaneum: artificial selection"

Tuyển tập các báo cáo nghiên cứu về sinh học được đăng trên tạp chí sinh học Journal of Biology đề tài: The genetic properties of homosexual copulation behaviour in Tribolium castaneum: artificial selection | Genet Sei Evol 1994 26 361-367 Elsevier INRA 361 Original article The genetic properties of homosexual copulation behaviour in Tribolium castaneunr. artificial selection L Castro1 MA Toro1 c Lopez-Fanjul2 1 Instituto National de Investigaciones Agrarias Departamento de Production Animal Apartado 8111 28080 Madrid 2 Facultad de Ciencias Biológicas Departamento de Genética Universidad Complutense 28040 Madrid Spain Received 18 January 1993 accepted 2 December 1993 Summary - Artificial divergent selection for the rate of homosexual copulation defined as the proportion of homosexual mountings performed by a male in a period of 30 min has been carried out for 2-3 generations in a population of Tribolium castaneum. A clear response was obtained in each of 4 replicates corresponding to an overall realized heritability of . No significant correlated response to selection was observed for the average number of mountings performed by a male during the testing period. Therefore our results do not agree with evolutionary interpretations of insect homosexual copulation behaviour based on the existence of a negative genetic correlation between the degree of sexual discrimination and sexual activity. On the contrary they strongly favour the hypothesis of sex recognition being absent in Tribolium casteneum. homosexual copulation behaviour artificial selection Tribolium castaneum Resume - Les propriétés génétiques du comportement de copulation homosexuelle chez D-ibolium castaneum selection artificielle. Une selection divergente pour le taux de copulation homosexuelle defini comme la proportion des mantes homosexuelles réalisées par un male sur une période de 30 min a été réalisée sur 2-3 generations dans une population de Tribolium castaneum. Une réponse nette a été obtenue dans chacune des 4 repetitions 1 lignée haute et 1 lignée basse par repetition qui correspond à une héritabilité réalisée de 0 11 0 01. Il n a pas été observe de réponse indirecte à la selection en ce

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