A new record of Hasselt’s bamboo shark Chiloscyllium hasseltii (Orectolobiformes: Hemiscylliidae) has been confirmed from the St. Martin’s Island, the northeastern part of the Bay of Bengal of Bangladesh. Two male specimens were collected on 19th December 2018 from the coast of St. Martin’s Island as a bycatch of the local fishermen. The traditional morphometric method was applied for taxonomic identification which was further validated by a molecular approach based on partial cytochrome c oxidase subunit I (COI) sequences (DNA barcodes). The key characteristics of this species are the distance from first to second dorsal fin less than 9.3% of TL; first dorsal fin height less than 6.6% of TL and second dorsal fin height less than 5.8% of TL. The morphometric, meristic and DNA barcoding data thus confirmed the presence of C. hasseltii in Bangladesh. With this report a new shark species has been added in the treasure of the marine ichthyofaunal diversity of Bangladesh and also updates the geographical distribution range of this species.
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The voucher specimens DUZM_MF_003C, TL 66.5 cm; DUZM_MF_003C.2, TL 65.0 cm, of Chiloscyllium hasseltii are keeping at the Museum of Department of Zoology, University of Dhaka, Bangladesh, and has public access. The DNA barcoding data can be retrieving from the NCBI GenBank.
Mitochondrial Cytochrome c Oxidase Subunit 1
Polymerase Chain Reaction
National Center for Biotechnology Information
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We acknowledge the financial support from the Ministry of Education, Government of the People’s Republic of Bangladesh as a grant for advanced research in Education (Grants No. MRS2017448).
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Datta, S.K., Saha, T., Sanzida, N.J. et al. New Distributional Record of Hasselt’s Bamboo Shark Chiloscyllium hasseltii (Orectolobiformes: Hemiscylliidae) from Bangladesh Waters. Thalassas 36, 291–295 (2020). https://doi.org/10.1007/s41208-020-00237-5