Induced spawning, larval rearing, and innate diet analysis of Indian black clam, Villorita cyprinoides: An alternative to resource restoration through aquaculture

Rahuman, Summaya and Jeena, N S and Anil, M K and Gomathi, P and Ebeneezar, Sanal and Varghese, Eldho and Vijayagopal, P and Asokan, P K (2024) Induced spawning, larval rearing, and innate diet analysis of Indian black clam, Villorita cyprinoides: An alternative to resource restoration through aquaculture. Aquaculture, 590. pp. 1-8. ISSN 1873-5622

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Abstract

Villorita cyprinoides (Gray, 1825) also called the Indian black clam is a native species from the Indian peninsula directly related to the livelihood of many beneficiaries. The wild population of this Cyrenid clam is confronted with substantial challenges, including various climatic stressors and anthropogenic pressures such as overfishing and habitat destruction. A balance between capture fisheries and aquaculture through the development of hatchery technology is inevitable for ensuring the sustainable use of resources. The declining population of V. cyprinoides underscores the urgency of standardizing breeding protocols and implementing proper farming practices to foster a sustainable black clam fishery, given that Villorita is a potential candidate species for aquaculture. This paper describes the first successful induced spawning of the clam with successful rearing of larvae up to the umboned veliger stage and evaluates the efficacy of induced spawning through combined physical and chemical stimuli. Furthermore, our study employs eDNA metabarcoding to analyze plankton dynamics in waters from native clam beds. This sheds light on the potential microalgal dietary preferences of the species, which can be valuable in preparing diets for larval development and aquaculture in the future.

Item Type:	Article
Uncontrolled Keywords:	Limit reference point; Controlled spawning; Larval development; Environmental DNA; Metabarcoding; Natural diet
Subjects:	Molluscan Fisheries > Clam Aquaculture Molluscan Fisheries Eggs and Larvae
Divisions:	CMFRI-Kochi > Marine Capture > Fishery Resources Assessment, Economics and Extension Division Subject Area > CMFRI > CMFRI-Kochi > Marine Capture > Fishery Resources Assessment, Economics and Extension Division CMFRI-Kochi > Marine Capture > Fishery Resources Assessment, Economics and Extension Division Subject Area > CMFRI-Kochi > Marine Capture > Fishery Resources Assessment, Economics and Extension Division CMFRI-Kochi > Marine Capture > Shellfish Fisheries Division Subject Area > CMFRI > CMFRI-Kochi > Marine Capture > Shellfish Fisheries Division CMFRI-Kochi > Marine Capture > Shellfish Fisheries Division Subject Area > CMFRI-Kochi > Marine Capture > Shellfish Fisheries Division
Depositing User:	Arun Surendran
Date Deposited:	17 Jul 2024 10:33
Last Modified:	18 Jul 2024 04:50
URI:	http://eprints.cmfri.org.in/id/eprint/18623

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