TAILIEUCHUNG - Báo cáo sinh học: "Genetic structure of Balearic honeybee populations based on microsatellite polymorphism"

Tuyển tập các báo cáo nghiên cứu về sinh học được đăng trên tạp chí sinh học thế giới đề tài: Genetic structure of Balearic honeybee populations based on microsatellite polymorphism | 339 Genet. Sel. Evol. 35 2003 339-350 INRA EDP Sciences 2003 DOI gse 2003012 Original article Genetic structure of Balearic honeybee populations based on microsatellite polymorphism Pilar De la RúAa José GALIÁNa José SERRANOa Robin . MORITZb a Departamento de Biología Animal Facultad de Veterinaria Apdo. 4021 Universidad de Murcia 30071 Murcia Spain b Institute of Zoology Martin-Luther-University Halle-Wittenberg Krollwitzer Str. 44 06099 Halle Saale Germany Received 2 January 2002 accepted 21 November 2002 Abstract - The genetic variation of honeybee colonies collected in 22 localities on the Balearic Islands Spain was analysed using eight polymorphic microsatellite loci. Previous studies have demonstrated that these colonies belong either to the African or west European evolutionary lineages. These populations display low variability estimated from both the number of alleles and heterozygosity values as expected for the honeybee island populations. Although genetic differentiation within the islands is low significant heterozygote deficiency is present indicating a subpopulation genetic structure. According to the genetic differentiation test the honeybee populations of the Balearic Islands cluster into two groups Gimnesias Mallorca and Menorca and Pitiusas Ibiza and Formentera which agrees with the biogeography postulated for this archipelago. The phylogenetic analysis suggests an Iberian origin of the Balearic honeybees thus confirming the postulated evolutionary scenario for Apis mellifera in the Mediterranean basin. The microsatellite data from Formentera Ibiza and Menorca show that ancestral populations are threatened by queen importations indicating that adequate conservation measures should be developed for protecting Balearic bees. honeybee microsatellites population structure genetic diversity Balearic Islands 1. INTRODUCTION The honeybee Apis mellifera L. has been the object of numerous studies from different points of view. Ruttner 32 .

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