Population growth and maturity characteristics of Commerson’s anchovy (Stolephorus commersonnii Lacepède, 1803) along the southwest coast of India

Nair, Preetha G and Joseph, Shoji and Kripa, V and Pillai, V N (2021) Population growth and maturity characteristics of Commerson’s anchovy (Stolephorus commersonnii Lacepède, 1803) along the southwest coast of India. Indian Journal of Geo-Marine Sciences (IJMS), 50 (2). pp. 141-147.

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    Abstract

    Population and maturity characteristics of Commerson’s anchovy (Stolephorus commersonnii) from the south-west coast of India have been presented here to elaborate upon the fishery of the species in the region. The present study on Commerson’s anchovy formed the first of its kind from the Indian waters and showed that the lifespan of the species is 3.06 years. The results also revealed that Commerson’s anchovy attains the length of 10.2, 13.5 and 14.7 cm at the end of 1st, 2nd and 3rd year of its life. The recruitment pattern of Commerson’s anchovy has two peaks - a minor one from February to March and a major one from June to July. The length-frequency analysis for the probability of capturing the species showed that the length at the first capture was 8.2 cm, indicating that the fish mostly being commercially exploited after they reach the first maturity i.e. the length of 7.1 cm. Total mortality, natural mortality and fishing mortality of the species were calculated as 2.78, 2.18 and 0.64 Y-1, respectively. Virtual population analysis (VPA) indicated that the number of natural mortality of the species is much larger than the commercial utilization, indicating the low exploitation of the species from the southwest coast of India.

    Item Type: Article
    Uncontrolled Keywords: Commerson’s anchovy;Growth;Maturity;Morality;Virtual Population Analysis
    Subjects: Fish and Fisheries > Fish biology
    Fish and Fisheries
    Divisions: CMFRI-Kochi > Fishery Environment
    Subject Area > CMFRI > CMFRI-Kochi > Fishery Environment
    CMFRI-Kochi > Fishery Environment
    Subject Area > CMFRI-Kochi > Fishery Environment
    Depositing User: Arun Surendran
    Date Deposited: 06 Mar 2021 10:28
    Last Modified: 06 Mar 2021 10:28
    URI: http://eprints.cmfri.org.in/id/eprint/14945

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