Morphological and molecular evidence supports the first occurrence of two fishes, Siganus sutor(Valenciennes, 1835)and Seriolina nigrofasciata(Rüppell, 1829)(Actinopterygii:Perciformes), from marine waters of Odisha coast, Bay of Bengal, India  

作　　者：Tapan K.Barik Surya N.Swain Bijayalaxmi Sahu Bibarani Tripathy Usha R.Acharya 

机构地区：[1]Post Graduate Department of Zoology,Berhampur University,Berhampur 760007,Odisha,India

出　　处：《Acta Oceanologica Sinica》2020年第6期26-35,共10页海洋学报（英文版）

基　　金：The Aquaculture and Marine Biotechnology Programme Initiative from Department of Biotechnology(DBT),Ministry of Science and Technology,Government of India under contract No.BT/PR5259/AAQ/3/592/2012。

摘　　要：Marine ecosystems provide a wide variety of diverse habitats that frequently promote migration and ecological adaptation.The extent to which the geographic distribution of marine organism has reshaped by human activities remains underappreciated.The limitations intrinsic to morphology-based identification systems have engendered an urgent need for reliable genetic methods that enable the unequivocal recognition of fish species,particularly those that are prone to overexploitation and/or market substitution.In the present study,however,an attempt has been taken to identify two locally adapted fish species,Siganus sutor(Valenciennes,1835)and Seriolina nigrofasciata(Rüppell,1829)of order Perciformes,which happens to be the first record in Odisha coast,Bay of Bengal.The diagnostic characteristics of Siganus sutor are:dorsal fin XIII-10,anal fin VII-9,pectoral fin 15,pelvic fin II-3,while that of Seriolina nigrofasciata dorsal fin VI-I-35,anal fin I-17,pectoral fin 16,pelvic fin 5.All COI barcodes generated in this study were matched with reference sequences of expected species,according to morphological identification.Bayesian and likelihood phylogenetic trees were drawn based on DNA barcodes and all the specimens clustered in agreement with their taxonomic classification at the species level.The phylogeographic studies based on haplotype network and migration rates suggest that both the species were not panmitic and the high-frequency population distribution indicates successful migration.The result of this study provides an important validation of the use of DNA barcode sequences for monitoring species diversity and changes within a complex marine ecosystem.

关 键 词：Siganus sutor Seriolina nigrofasciata morphological characteristics DNA Barcoding 

分 类 号：Q958[生物学—动物学]