Reduced Female Gene Flow in the European Flat Oyster Ostrea edulis

Show simple item record Díaz-Almela, E. Boudry, P. Launey, S. Bonhomme, F. Lapègue, S. 2019-12-11T09:41:24Z
dc.description.abstract [eng] DNA sequences from orthologous loci can provide universal characters for taxonomic identification. Molecular taxonomy is of particular value for groups in which distinctive morphological features are difficult to observe or compare. To assist in species identification for the little known family Ziphiidae (beaked whales), we compiled a reference database of mitochondrial DNA (mtDNA) control region (437 bp) and cytochrome b (384 bp) sequences for all 21 described species in this group. This mtDNA database is complemented by a nuclear database of actin intron sequences (925 bp) for 17 of the 21 species. All reference sequences were derived from specimens validated by diagnostic skeletal material or other documentation, and included four holotypes. Phylogenetic analyses of mtDNA sequences confirmed the genetic distinctiveness of all beaked whale species currently recognized. Both mitochondrial loci were well suited for species identification, with reference sequences for all known ziphiids forming robust species-specific clades in phylogenetic reconstructions. The majority of species were also distinguished by nuclear alleles. Phylogenetic comparison of sequence data from 'test' specimens to these reference databases resulted in three major taxonomic discoveries involving animals previously misclassified from morphology. Based on our experience with this family and the order Cetacea as a whole, we suggest that a molecular taxonomy should consider the following components: comprehensiveness, validation, locus sensitivity, genetic distinctiveness and exclusivity, concordance, and universal accessibility and curation.
dc.format application/pdf
dc.relation.isformatof Versió postprint del document publicat a:
dc.relation.ispartof Journal of Heredity, 2004, vol. 95, num. 6, p. 510-516
dc.rights (c) The American Genetic Association , 2004
dc.subject.classification 57 - Biologia
dc.subject.classification Medi ambient
dc.subject.other 57 - Biological sciences in general
dc.subject.other Environment
dc.title Reduced Female Gene Flow in the European Flat Oyster Ostrea edulis
dc.type info:eu-repo/semantics/article
dc.type info:eu-repo/semantics/acceptedVersion 2019-12-11T09:41:24Z info:eu-repo/date/embargoEnd/2026-12-31
dc.embargo 2026-12-31
dc.rights.accessRights info:eu-repo/semantics/embargoedAccess

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