Tuyển tập các báo cáo nghiên cứu về lâm nghiệp được đăng trên tạp chí lâm nghiệp quốc tế, đề tài: Enzymatic polymorphism in natural populations of the sawfly Diprion pini L (Hymenoptera: Diprionidae) L Beaudoin. | Ann Sci For 1997 54 505-512 Elsevier Inra 505 Original article Enzymatic polymorphism in natural populations of the sawfly Diprion pini L Hymenoptera Diprionidae L Beaudoin1 JP Allais2 c Géri1 1 Station de zoologieforestiere Inra Ardon 45160 Olivet 2 Laboratoire d ecologie et de zoologie UPS centre d Orsay hat 442 91405 Orsay France Received 7 May 1996 accepted 21 March 1997 Summary - Diprion pini L is a sawfly whose larvae cause sudden brief and spectacular defoliation on Pinus sylvestris. In France bivoltine populations in lowland areas and univoltine populations in mountain areas cohabit all living in forests located at varying distances from each other. The characteristics of the diapause of mountain populations are different from those of lowland populations. Six natural populations were studied using enzymatic electrophoresis to identify markers reflecting genetic heterogeneity in the French D pint populations three lowland Rambouillet Romorantin Lor-ris and three mountain populations Saint-Just-Saint-Rambert Ceillac Fontchristianne . The study of enzymatic polymorphism concentrated on six loci three polymorphic esterase loci a monomorphic malate dehydrogenase locus a monomorphic and a polymorphic amino-peptidase loci. The determination of genetic distance between populations did not allow us to discriminate between bivoltine lowland populations and univoltine mountain populations. The populations fell into two subgroups those from the Alps and Rambouillet and those from central France Lorris Romorantin and Saint-Just-Saint-Rambert . Diprion pint I Hymenoptera natural populations enzymatic polymorphism Resume - Polymorphisme enzymatique des populations naturelles de la tenthrède Diprion pint Hymenoptera Diprionidae . Diprion pint L est une tenthrède dont les larves causent des defeuillai-sons brutales brèves et spectaculaires sur Pinus sylvestris L. En France coexistent des populations bivoltines en plaine et univoltines en montagne toutes infeodees à des .
