Note on an albino spadenose shark, Scoliodon laticaudus from the north-east coast of India

Dash, Swatipriyanka Sen and Kizhakudan, Shoba Joe and Thomas, Sujitha and Dash, Gyanaranjan and Das, Madhumita and Ghosh, Shubhadeep (2023) Note on an albino spadenose shark, Scoliodon laticaudus from the north-east coast of India. Marine Fisheries Information Service, Technical and Extension Series, 255. pp. 39-41. ISSN 0254-380X

Text MFIS 255_2023_Shoba Joe Kizhakudan.pdf Download (332kB)

Abstract

Albinism is a genetically inherited condition where the pigment protein melanin is either missing or nonfunctional. Individuals with total albinism exhibit total absence of melanin involving the entire body while partial albinism (or leucism) is phenotypically characterized by absence of melanin in parts of the body or reduction of melanin in the entire body or a part of it. It is rare in elasmobranchs as compared toteleosts. To date, 61 species of elasmobranchs have been reported with albinism globally and Carcharhinidae is no exception to this. The spadenose shark Scoliodon laticaudus Müller & Henle, 1838 (Family: Carcharhinidae) is a small shark landed all along the Indian coast in considerable numbers. Leucism has been reported in this species from India (Veena et al., 2011) while this report is on partial albinism in a specimen of S. laticaudus landed at Digha landing centre (East Midnapur, West Bengal, India) by a trawler that operated at a depth range of 30-50m (21°35'52"N 87°54’'47"E). The specimen was collected during routine field sampling on 21st December, 2020, and body measurements were recorded. Morphometric comparisons were made with a normal specimen of the same sex and similar length. Tissue samples were processed for further detailed genetic analysis.

Item Type:	Article
Uncontrolled Keywords:	Spadenose shark; Scoliodon laticaudus
Subjects:	Demersal Fisheries > Shark fisheries Elasmobranch Fisheries Demersal Fishes
Divisions:	CMFRI-Kochi > Marine Capture > Fishery Resources Assessment Division Subject Area > CMFRI > CMFRI-Kochi > Marine Capture > Fishery Resources Assessment Division CMFRI-Kochi > Marine Capture > Fishery Resources Assessment Division Subject Area > CMFRI-Kochi > Marine Capture > Fishery Resources Assessment Division CMFRI-Madras (Chennai) CMFRI-Mangalore CMFRI-Puri FC CMFRI-Visakhapatnam CMFRI-Kochi > Marine Capture > Finfish Fisheries Division Subject Area > CMFRI > CMFRI-Kochi > Marine Capture > Finfish Fisheries Division CMFRI-Kochi > Marine Capture > Finfish Fisheries Division Subject Area > CMFRI-Kochi > Marine Capture > Finfish Fisheries Division
Depositing User:	Arun Surendran
Date Deposited:	13 Jun 2023 09:35
Last Modified:	13 Jun 2023 09:35
URI:	http://eprints.cmfri.org.in/id/eprint/17057

Actions (login required)

View Item