Open AccessBiogeography and pattern of gene flow among Barbus species (Teleostei: Cyprinidae) inhabiting the Italian Peninsula and neighbouring Adriatic drainages as revealed by allozyme and mitochondrial sequence data
Author(s) -
TSIGENOPOULOS COSTAS S.,
KOTLÍK PETR,
BERREBI PATRICK
Publication year - 2002
Publication title -
biological journal of the linnean society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.906
H-Index - 112
eISSN - 1095-8312
pISSN - 0024-4066
DOI - 10.1046/j.1095-8312.2002.00007.x
Subject(s) - biology , cytochrome b , introgression , mitochondrial dna , gene flow , zoology , systematics , taxon , cypriniformes , population , biogeography , cyprinidae , ecology , taxonomy (biology) , evolutionary biology , genetic variation , gene , genetics , fishery , fish <actinopterygii> , demography , sociology
Genetic relationships among 24 Italian and Adriatic populations of barbs (genus Barbus ) were assessed using electrophoretic analysis of allozymes and mitochondrial DNA sequences of the cytochrome b gene. Results obtained with both markers were concordant, but they were not congruent with the current morphology‐based systematics and taxonomy. Populations assigned to the same nominal taxa ( B. caninus , B. petenyi and B. rebeli ), were very divergent in both allozymes and mtDNA, indicating that these populations deserve recognition as different units for conservation and management. On the other hand, the two fluvio‐lacustrine taxa considered as distinct species (i.e. B. plebejus and B. tyberinus ) are genetically very close to each other, showing no clear differences at either allozymes or mtDNA. The population of B. caninus from Pellice River carried allozyme alleles and mtDNA specific for B. plebejus , indicating a genetic introgression towards the former species. © 2002 The Linnean Society of London, Biological Journal of the Linnean Society , 2002, 75 , 83–99.