Stock assessment and reproductive biology of Puntius sarana (Hamilton, 1822) in Tamiraparani River basin of south Tamilnadu, India

Pon Saravana Kannan, A and Rajkumar, M and Jawahar, P and Jayakumar, N and Sundaramoorthy, B (2016) Stock assessment and reproductive biology of Puntius sarana (Hamilton, 1822) in Tamiraparani River basin of south Tamilnadu, India. International Research Journal of Biological Sciences, 6 (2). pp. 20-25.

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    Abstract

    Length weight frequency data were collected on weekly intervals for studying the length frequency analysis, species composition, catch and effort and reproductive biological aspects of puntius sarana in Tamiraparani riverine system (8° 42’N and 77.15° 24’E) of Western Ghats of India. The estimated b and z value was found 2.246 and 1.16 respectively. As per Virtual Population Analysis the maximum fishing mortality occurs at 30.3 cm. Reasonable fishing mortality started from 22.8 cm. The maximum steady state biomass was observed in the size group of 21.3 cm. The catch per unit effort (CPUE) was found to be high during the month of January and February. The decayed organic matter, algae and sand grains were also recorded in this species. The number of ova was found to vary 34,218 to 43,296 in the size range of 170 mm - 260 mm for P. sarana. The length at 50% maturity was estimated was 200 mm in total length for females. We observed that the fecundity was relatively low which indicates that, this species should be exploited carefully. To avoid growth over fishing and conservation of this species, the minimum legal size (MLS) for capture can be fixed below 200 mm for female.

    Item Type: Article
    Uncontrolled Keywords: Puntius sarana, Fecundity, length at first maturity, catch per unit effort, minimum legal size
    Subjects: Aquaculture > Tropical fish
    Fishery biology
    Marine Fisheries > Stock Assessment
    Divisions: CMFRI-Mandapam
    Depositing User: Arun Surendran
    Date Deposited: 19 Sep 2019 10:26
    Last Modified: 20 Sep 2019 06:29
    URI: http://eprints.cmfri.org.in/id/eprint/13854

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