New evidence of morphological characters and DNA barcoding of Pampus argenteus( Euphrasen,1788)
2013; Shanghai Ocean University; Linguagem: Inglês
ISSN
1000-0615
Autores Tópico(s)Genetic diversity and population structure
ResumoThe Pampus fishes are important commercial species and widely distributed in the coastal waters of China. Due to the similarities and complexities of morphological characters used in traditional taxonomy,taxonomic confusion has arisen in Pampus concerning the nomenclature. Among the genus,perhaps none is more confusing in the taxonomic studies than Pampus argenteus. Up to date,no reports about neotype of P.argenteus can be found. In the present study,redescription of morphological characters and redefinition of DNA barcoding of P. argenteus are conducted based on sixteen specimens collected from Kuw ait( northern w aters of Kuw ait),Pakistan( Sonmiani Bay,Ormara,Pasni),Beibu Bay and Taiw an during October 2010 to September 2012. The diagnostic characters of P. argenteus: dorsal fin Ⅶ- Ⅷ-39- 43,pectoral fin 21- 29,anal fin Ⅴ- Ⅵ-35- 41,caudal fin 26- 28. First gill arch w ith 10- 12[( 2- 3) +( 8- 9) ]small and sparse gill rakers. Vertebrae 37- 38. In the occipital region,the area of the w avy branches above lateral line is developed and plume-like,w ith a little obtuse edge. Ventral w avy branches below lateral line are curvy and shorter than that above lateral line,and not reaching the base of dorsal fin. Combining all COⅠ sequences of P. argenteus from GenBank w ith those of this study,four absolute groups can be found in all specimens based on the genetic differences in amino acids and distance betw een groups. From the NJ tree,w e can find that only one sequence( FJ384702) is similar to our DNA barcoding of P. argenteus. Therefore,it is urgent to guarantee the correctness of all sequences from GenBank. Redescription of morphological characters and the right DNA barcoding of P. argenteus are given,w hich provide a guarantee for efficient and accurate study,and theoretic basis for classification of Pampus in future.
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