TAILIEUCHUNG - Báo cáo sinh học: "Genetic variability in French populations of the Corsican mouflon (Ovis ammon musimon): analysis of 2 blood proteins and red-cell blood groups"

Tuyển tập các báo cáo nghiên cứu về sinh học được đăng trên tạp chí sinh học Journal of Biology đề tài: Genetic variability in French populations of the Corsican mouflon (Ovis ammon musimon): analysis of 2 blood proteins and red-cell blood groups | 303 Genet Sei Evol 1994 26 303-315 Elsevier INRA Original article Genetic variability in French populations of the Corsican mouflon Ovis ammon musimon analysis of 2 blood proteins and red-cell blood groups c Montgelard1 TC Nguyen2 D Dubray3 1 Institut des Sciences de 1 Évolution URA 327 CNRS Laboratoire de Paléontologie des Vertébrés EPHE UM II cc 64 34095 Montpellier Cedex 5 2 INRA Unite Polymorphisme Sanguin Ovin et Caprin Laboratoire des Groupes Sanguins 78350 Jouy-en-Josas 3 Office National de la Chasse CNERA Faune de Montagne BP 6074 34030 Montpellier Cedex 1 France Received 8 April 1993 accepted 11 February 1994 Summary - Genetic variation in 7 French populations of the Corsican mouflon Ovis ammon musimon was investigated by red-cell blood-group typing and electrophoresis of hemoglobin and transferrin. The 7 populations included 3 that were captive 3 established by introducing animals into the wild and 1 native population on Corsica. Raw data were treated by classical monofactorial indexes and multivariate analyses. These analyses revealed no significant reduction of genetic variability in either the captive or the introduced feral populations although the number of founder individuals was very low in both cases. The maintenance of genetic variation is explained by the diverse geographical origins and by the genetic divergence of the founder individuals. Moreover multivariate analyses revealed a genetic structure related to the origin of the founder populations. Longterm resilience of gene combinations of blood factors and absence of gene flow between populations are suggested as the factors explaining conservation of the genetic make-up of the founder individuals over several generations. Finally the presence of the hemoglobin A allele in 4 of the populations allows discussion of the emergence of the mouflon by feralization from archaic sheep. Ovis ammon musimon I red-cell blood groups genetic variability origin of populations multivariate analysis Resume -

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