Spatial structure and distribution of ribbonfish Trichiurus lepturus Linnaeus, 1758 along the eastern Arabian Sea

Azeez, P A and Rohit, Prathibha and Rajesh, K M and Chellappan, Anulekshmi and Nakhawa, A D and Ghosh, Shubhadeep and Koya, Mohammed and Abdussamad, E M (2024) Spatial structure and distribution of ribbonfish Trichiurus lepturus Linnaeus, 1758 along the eastern Arabian Sea. Indian Journal of Fisheries, 71 (1). pp. 29-34. ISSN 0970 - 6011

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Abstract

Ribbonfish Trichiurus lepturus is one of the most important pelagic fish resources in India. The west coast of India (WCI) is considered to be the major region where the species is abundant and forms a sizeable fishery. Determining the spatio-temporal abundance of fish is a key requirement for sustainable resource harvest. This paper illustrates the spatial structure and distribution of ribbonfish along the WCI using the geostatistical technique, semi-variogram modelling. The spatio-temporal distribution map was generated by kriging interpolation using the global neighbourhood in the study area. The results show that the areas of higher abundance of ribbonfish shifted between seasons, abundance along the northern region was high during the post-monsoon, while later shifting southward up to 17°N, peaking between 18°N and 19°N. Furthermore, summertime peak abundance tended to be more coastal in the Mumbai region. Ribbonfish abundance was relatively lower along the southern region i.e., below 15°N year-round. This finding provides additional information to fishery managers and policymakers which will help improve the sustainability of fisheries coupled with traditional fisheries management measures.

Item Type:	Article
Uncontrolled Keywords:	Arabian Sea; GIS; Geo-statistics; Species distribution modelling; Spatiotemporal management
Subjects:	Demersal Fishes > Ribbon fishes
Divisions:	CMFRI-Mangalore CMFRI-Mumbai CMFRI-Veraval CMFRI-Visakhapatnam
Depositing User:	Arun Surendran
Date Deposited:	01 Apr 2024 10:55
Last Modified:	11 Apr 2024 08:43
URI:	http://eprints.cmfri.org.in/id/eprint/18244

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