Details

Autor(en) / Beteiligte

• Gopalakrishnan, A.
• Vineesh, N.
• Shihab, I.
• Akhilesh, K. V.
• Bineesh, K. K.
• Menon, Muktha
• Vijayagopal, P.

Titel

An Insight into the Threadfin (Perciformes: Polynemidae) Diversity of Indian Waters using Mitochondrial COI Signatures

Ist Teil von

• Thalassas : revista de ciencias del mar, 2021-10, Vol.37 (2), p.689-700

Ort / Verlag

Cham: Springer International Publishing

Erscheinungsjahr

2021

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• Threadfins (Perciformes: Polynemidae) are commercially important, highly prized table fishes in India. In this study, we analysed the mitochondrial COI gene for validating species identification and phylogeny of threadfins occurring in Indian waters. Consequently, we developed barcodes for ten polynemids belonging to the genera  Polydactylus , Eleutheronema , Leptomelanosoma , Filimanus and Polynemus . The K2P distance within the polynemid species in Indian waters ranged from zero to 0.8%. Nucleotide composition was estimated as adenine (A) = 22.5%, thymine (T) = 28.7%, cytosine (C) = 29.7% and guanine (G) = 19.1%. The average transitional pairs (75.8) were more frequent than the average transversional pairs (24.2) with an estimated Transition/Transversion bias (R) of 3.33. Cryptic species were observed in  Polydactylus and Eleutheronema indicating the need for detailed studies on the taxonomy of polynemids globally. The present study determines the utility of DNA barcodes in species identification in polynemids.