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Pouyaud Laurent, Gustiano R., Legendre Marc. (1998). Phylogenetic relationships among pangasiid catfish species (Siluriformes, Pangasiidae) and new insights on their zoogeography. In : Legendre Marc (ed.), Pariselle Antoine (ed.). The biological diversity and aquaculture of clariid and pangasiid catfishes in South-East Asia : proceedings of the mid-term workshop of the "Catfish Asia project". Jakarta (IDN) ; Can Tho : IRD ; Can Tho University, 49-56. Characterisation, Utilisation and Maintenance of Biological Diversity for the Diversification and Sustainability of Catfish Culture in South East Asia, Can Tho (VNM), 1998/05/11-15.

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Titre
Phylogenetic relationships among pangasiid catfish species (Siluriformes, Pangasiidae) and new insights on their zoogeography
Année de publication1998
Type de documentColloque
AuteursPouyaud Laurent, Gustiano R., Legendre Marc.
InLegendre Marc (ed.), Pariselle Antoine (ed.). The biological diversity and aquaculture of clariid and pangasiid catfishes in South-East Asia : proceedings of the mid-term workshop of the "Catfish Asia project"
SourceJakarta (IDN) ; Can Tho : IRD ; Can Tho University, 1998, p. 49-56.
ColloqueCharacterisation, Utilisation and Maintenance of Biological Diversity for the Diversification and Sustainability of Catfish Culture in South East Asia, Can Tho (VNM), 1998/05/11-15
RésuméWith the aim of detecting phylogenetic relationships among Pangasiidae catfishes, 23 enzyme loci were studied on 18 nominal species of the genera Pangasius and Helicophagus (Roberts and Vidthayanon, 1991). In order to assess the taxonomic position of Laides genus in the Schilbeidae or in the Pangasiidae, 2 species belonging to the genus Laides and 1 species of the genus Pseudeutropius (Siluriformes, Schilbeidae) were added in the study. The results indicate that the species Laides hexanema and Laides sinensis appear to be genetically related with the Pangasiidae. The phylogenetic tree obtained shows a clustering of species which validate the genus Helicophagus but indicates that the genus Pangasius is polyphyletic. The genus Pangasius is composed of 3 genetic differentiated groups. Group 1 is composed of 3 species belonging to two different morphological entities validated by Roberts and Vidthayanon (1991) as possible subgenus. Pangasius hypophthalmus and P. gigas which share common genetic characters validate the subenus Pangasianodon. The possession of many private alleles by P. pleurotaenia confirms the morphological originality of this species which was therefore considered to belong to the monotypic subgenus Pteropangasius. The second groupd consists of P. micronema, P. macronema, P. lithostoma and P. polyuranodon and the last group represents all the other species of the genus Pangasius. By contrast Neopangasius considered as a possible subgenus by Roberts and Bidthayanon (1991) is polyphyletic. Although relative genetic similarities were found between P. humeralis and P. nieuwenhuisii which are located in group 3, the species P. lithostoma appears to be more closely related to species belonging to the group 2... (D'après résumé d'auteur)
Plan de classementAquaculture [040AQUAC] ; Poissons [034BIOVER01]
DescripteursPOISSON D'EAU DOUCE ; TAXONOMIE ; PHYLOGENIE ; POLYMORPHISME ENZYMATIQUE ; ELECTROPHORESE ; ANALYSE MULTIVARIABLE ; DISTANCE GENETIQUE ; ZOOGEOGRAPHIE ; SPECIATION ; EVOLUTION ; ETUDE REGIONALE
Descr. géo.ASIE DU SUD EST
LocalisationFonds IRD [F A010020339] ; Montpellier (Centre IRD)
Identifiant IRDfdi:010020346
Lien permanenthttp://www.documentation.ird.fr/hor/fdi:010020346

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