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STUDY OF THE GENETIC STRUCTURE OF GREEK LEUCISCUS CEPHALUS CL.) POPULA TIONS

By ΑΝΑΣΤΑΣΙΑ ΙΜΣΙΡΙΔΟΥ

Abstract

IN THIS STUDY , WE EXAMINED THE GENETIC STRUCTURE OF GREEK LEUCISCUS CEPHALUSPOPULATIONS BY USING THE METHOD OF ALLOZYME ELECTROPHORESIS AND THE "RESTRICTION FRAGMENT LENGTH POLYMORPHISMS" METHOD ,IN TWO SEGMENTS OF MITOCHONDRIAL DNA. THE AIM WAS THE ASSE SSMENT OF THE VALIDITY OF THE SYSTEMATIC ASSIGMENT OFL. CEPHALUS POPULATIONS TO FOUR DISTINCT SUBSPECIES, AS WELL AS THE POSSIBLE INFLUENCE OF PALEOGEOGRAPHIC ELENTS, ON THE PHYLOGENETIC RE LATIONSHIPS. VALUES OF GENETIC DISTANCES AMONG POPULATIONS SEEM T O JUSTIFY THE EXSTENCE OF THE TWO SUBSPECIES , WHILE THE EXISTANCE OF THE REST SUBSPECTS IS RATHER DOUBTFUL. THERE IS AGENERAL CONTRACT BETWEEN THE TWO METHODOLOGIES . THE CLUSTERINGOF POPULATIONS ACCORDING TO THE M+DNA DATA, INDICATES THAT GREEK POPULATI ONS BELONG TO THREE DISTINCT PHYLOGENETIC LINEAGES WHICH COLONIZED GREECE AND DISPERSED THROUGHOUT THE AREA DURINE PLEISTOCENE TIMES.

Topics: Genetic structure, LECISCUS CEPHALUS, DNA, Mitochondrial, PALEOGEOGRAPHIC EVENTS, Phylogenetic relationships, PROTEIN POLYMORPHISM, Restriction fragment length polymorphism (RFLP), SYSTEMATIC CLASSIFICATION-SUBSPECIES, Γενετική δομή, ΜΙΤΟΧΟΝΔΡΙΑΚΟ DNA2, ΠΑΛΑΙΟΓΡΑΦΙΚΑ ΓΕΓΟΝΟΤΑ, Πολυμορφισμός μήκους περιοριστικών θραυσμάτων, ΠΡΩΤΕΙΝΙΚΟΣ ΠΟΛΥΜΟΡΦΙΣΜΟΣ, ΣΥΣΤΗΜΑΤΙΚΗ ΚΑΤΑΤΑΞΗ-ΥΠΟΕΙΔΗ, Φυλογενετικές σχέσεις
Publisher: Aristotle University Of Thessaloniki (AUTH)
Year: 1998
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