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Redescription and molecular characterization of Crenidens macracanthus Günther, 1874 (Pisces: Sparidae), and first record of C. indicus Day, 1873 in the eastern Indian Ocean

Published online by Cambridge University Press:  28 October 2020

Subal Kumar Roul Open the ORCID record for Subal Kumar Roul [Opens in a new window] ,
N. S. Jeena ,
Shubhadeep Ghosh Open the ORCID record for Shubhadeep Ghosh [Opens in a new window]  and
Prathibha Rohit
Subal Kumar Roul*
Affiliation:
Puri Field Centre of ICAR-Central Marine Fisheries Research Institute, Puri-752 002, Odisha, India
N. S. Jeena
Affiliation:
ICAR-Central Marine Fisheries Research Institute, P. B. No. 1603, Ernakulam North P. O., Cochin, Kerala682 018, India
Shubhadeep Ghosh
Affiliation:
Visakhapatnam Regional Centre of ICAR-Central Marine Fisheries Research Institute, Visakhapatnam-530 003, Andhra Pradesh, India
Prathibha Rohit
Affiliation:
Mangalore Research Centre of ICAR-Central Marine Fisheries Research Institute, Mangaluru-575 001, Karnataka, India
*
Author for correspondence: Subal Kumar Roul, E-mail: subalroul@gmail.com
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Abstract

Crenidens macracanthus was originally described in 1874 based on a single specimen collected from Chennai (Madras), south-east coast of India. In 1875, the species was synonymized with C. indicus without citing any valid reason. Since then, no taxonomic studies have been attempted for the genus Crenidens, except in 2013 the species was resurrected from synonymy and redescribed as a valid species based on the holotype and non-type specimen. In view of the fact that C. macracanthus is a poorly known species, it is redescribed based on examination of 30 additional specimens of 105.8–162.2 mm SL, collected from Puri, Odisha, north-east coast of India (Bay of Bengal) from 2017–2019, using morphological and molecular examinations. Our study provides a detailed morphological description, first colour photographs and phylogenetic analysis using COI barcodes of the species. The study has expanded the range in several morpho-meristic characters in comparison with the type and non-type specimens described earlier. The species in fresh condition can be easily distinguished from its two congeners (C. crenidens and C. indicus) by the yellowish tip of the lower caudal-fin lobe. Our study has also extended the distribution range of C. indicus (previously known only from the north-eastern Arabian Sea) to the eastern Indian Ocean, based on examination of a preserved specimen collected from Tuticorin, Tamil Nadu.

Keywords

Crenidens macracanthusC. indicusSparidaeredescriptionCOI barcodeIndian Ocean
Type
Research Article
Information
Journal of the Marine Biological Association of the United Kingdom , Volume 100 , Issue 7 , November 2020 , pp. 1147 - 1153
Copyright
Copyright © Marine Biological Association of the United Kingdom 2020

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