Journal Article
Taxonomy and genetic relationships of Pangasiidae, Asian catfishes, based on morphological and molecular analyses
Gustiano, R. and Pouyaud, L.
Record Number:
5243
Year:
2007
Journal:
Indonesian Aquaculture Journal
Pages:
107-112
Volume:
2
Abstract:
Pangasiids are economically important riverine catfishes generally residing in
freshwater from the Indian subcontinent to the Indonesian Archipelago. The
systematics of this family are still poorly known. Consequently, lack of such basic
information impedes the understanding of the biology of the Pangasiids and the
study of their aquaculture potential as well as improvement of seed production and
growth performance. The objectives of the present study are to clarify phylogeny of
this family based on a biometric analysis and molecular evidence using 12S ribosomal
mtDNA on the total of 1070 specimens. The study revealed that 28 species are
recognised as valid in Pangasiidae. Four genera are also recognized as Helicophagus
Bleeker 1858, Pangasianodon Chevey 1930, Pteropangasius Fowler 1937, and
Pangasius Valenciennes 1840 instead of two as reported by previous workers. The
phylogenetic analysis demonstrated the recognised genera, and genetic
relationships among taxa. Overall, trees from the different analyses show similar
topologies and confirm the hypothesis derived from geological history, palaeontology,
and similar models in other taxa of fishes from the same area. The oldest genus may
already have existed when the Asian mainland was still connected to the islands in
the southern part about 20 million years ago.
KEYWORDS: taxonomy, genetic, morphology, molecular, catfish,
pangasiidae
Times Cited:
0