Molecular analyses reveal a lack of genetic structuring in the scalloped hammerhead shark, Sphyrna lewini (Griffith & Smith, 1834) along the Indian coast

The scalloped hammerhead shark, Sphyrna lewini (Griffith and Smith, 1834), is an important species along the Indian coast both in the Arabian Sea and Bay of Bengal. As per the IUCN Red List Assessment, the scalloped hammerhead shark is categorized as “globally endangered.” We investigated the intra-...

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Bibliographic Details
Published in:Marine biodiversity 2020-04, Vol.50 (2), p.18, Article 18
Main Authors: Sukumaran, Sandhya, Sebastian, Wilson, Mukundan, Lakshmi P., Menon, Muktha, Akhilesh, K. V., Zacharia, P. U., Gopalakrishnan, A.
Format: Article
Language:English
Subjects:
Animal Systematics/Taxonomy/Biogeography
Biodiversity
Biomedical and Life Sciences
Bycatch
Carnivorous animals
Coasts
Cytochrome-c oxidase
Cytochromes
Demography
Differentiation
Evolution
Fisheries
Fishing
Freshwater & Marine Ecology
Genetic diversity
Genetic structure
Genetic variation
Haplotypes
Investigations
Life Sciences
Marine fishes
Marine molluscs
Mitochondrial DNA
Nucleotide sequence
Ocean basins
Oceans
Philopatry
Plant Systematics/Taxonomy/Biogeography
Population
Population genetics
Sharks
Short Communication
Sphyrna lewini
Threatened species
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Summary:The scalloped hammerhead shark, Sphyrna lewini (Griffith and Smith, 1834), is an important species along the Indian coast both in the Arabian Sea and Bay of Bengal. As per the IUCN Red List Assessment, the scalloped hammerhead shark is categorized as “globally endangered.” We investigated the intra-specific genetic diversity and population genetic structure of S. lewini along the Indian coast (Arabian Sea and Bay of Bengal) by analyzing mitochondrial cytochrome C oxidase 1 and control region sequences, respectively. Furthermore, comparisons of the sequence data generated from the present study with the sequences of S. lewini retrieved from GenBank revealed the presence of three (3) haplogroups corresponding to Indian/Indo-Pacific, Atlantic, and Pacific regions. A lack of genetic differentiation within the Indian coast and significant differentiation between ocean basins ( F ST ; 0.80; p  
ISSN:1867-1616
1867-1624
DOI:10.1007/s12526-020-01040-4