Morphological and molecular investigations reveal that Paphia malabarica from Indian waters is not synonymous with Paphia (Protapes) gallus

Sukumaran, Sandhya and Mohamed, K S and Asokan, P K and Sebastian, Wilson and Mukundan, Lakshmi and Gopalakrishnan, A and Alloycious, P S and Venkatesan, V and Kavitha, M (2019) Morphological and molecular investigations reveal that Paphia malabarica from Indian waters is not synonymous with Paphia (Protapes) gallus. Regional Studies in Marine Science, 27. pp. 1-6.

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    Abstract

    Paphia malabarica Chemnitz, 1782 is an economically important species of Venerid clam in Indian waters. The fishery of P. malabarica from Ashtamudi estuary, Kollam, Kerala has been certified by marine stewardship council as sustainable and the fishery is now managed by a set of fishery management plans. The name P. malabarica is invalid now as it has been synonymized as Paphia (Protapes) gallus (Gmelin, 1791) in subsequent taxonomic investigations. We examined the taxonomic status of P. malabarica using morphological and molecular methods. Morphological characteristics of the shell mainly, shell structure, size and internal features were compared between P. gallus and P. malabarica indicating significant differences in morphology. Molecular investigations were carried out by amplifying and sequencing mitochondrial Cytochrome C Oxidase 1 (COI) and 16SrRNA sequences of P. malabarica collected from Ashtamudi (Kollam), Dharmadam, Kannur (3 locations in Kerala), Goa, Maharashtra, Gujarat and Tuticorin in order to clear the taxonomic ambiguity and validate the synonymy. Sequences of P. malabarica were compared with sequences of P. gallus and other Paphia species. Substantial genetic divergence was detected between P. malabarica and P. gallus with a K2P genetic distance value of 28.9% and distinct clustering in phylogenetic tree demonstrating that P. malabarica is well diverged from P. gallus. We suggest retaining the name P. malabarica considering that the synonymy with P. gallus is invalid.

    Item Type: Article
    Uncontrolled Keywords: Ashtamudi short neck clam; K2P distance; Marine stewardship council; Phylogenetic tree; Synonymy; Venerid clams
    Subjects: Molluscan Fisheries > Clam
    Fish Biotechnology
    Molluscan Fisheries
    Divisions: CMFRI-Kochi > Marine Biotechnology
    Subject Area > CMFRI > CMFRI-Kochi > Marine Biotechnology
    CMFRI-Kochi > Marine Biotechnology
    Subject Area > CMFRI-Kochi > Marine Biotechnology

    CMFRI-Kochi > Marine Capture > Molluscan Fisheries
    Subject Area > CMFRI > CMFRI-Kochi > Marine Capture > Molluscan Fisheries
    CMFRI-Kochi > Marine Capture > Molluscan Fisheries
    Subject Area > CMFRI-Kochi > Marine Capture > Molluscan Fisheries
    Depositing User: Arun Surendran
    Date Deposited: 06 Mar 2019 09:16
    Last Modified: 06 Mar 2019 09:16
    URI: http://eprints.cmfri.org.in/id/eprint/13449

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