Taxonomy, fishery, biology and population dynamics of Plesionika semilaevis along the southwest coast of India

Sreelakshmy, S (2025) Taxonomy, fishery, biology and population dynamics of Plesionika semilaevis along the southwest coast of India. Doctoral thesis, ICAR- Central Marine Fisheries Research Institute.

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Abstract

Fisheries are integral to India's agricultural sector, providing employment, nutritional security, raw materials for industries, and substantial export revenue. The country has a coastline of about 8,129 kilometers along the Arabian Sea and Bay of Bengal and a vast Exclusive Economic Zone (EEZ) covering 2.02 million square kilometers. India's EEZ grants rights and responsibilities for sustainable marine resource management up to 200 nautical miles. Oceanographic differences between coasts influence productivity, with monsoon-driven upwelling on the southwest coast fostering higher primary productivity compared to the southeast coast. The west coast of India contributes approximately 60-65% of the total marine fish landings in the country, as it encompasses highly productive zones like the southwest and northwest coasts. The southwest coast alone accounts for about 31.7%, supported by nutrient-rich upwelling zones (Vivekanandan et al. 2003) highlighting its importance to the fisheries sector.

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