Some aspects of reproductive biology of Gerres filamentosus Cuvier.

Beevi, A. Raihanathu (1998) Some aspects of reproductive biology of Gerres filamentosus Cuvier. Masters thesis, Central Institute of Fisheries Education.

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    Abstract

    The reproductive biology o f Gerres filamentosus cuvier was investigated in cochin from the samples collected from the trawl landings. Analysis of reproductive organs, maturity condition, fecundity and sex ratio was done during March - June 1998. Oocyte diameter was measured and histological characteristics of ovary were studied, This species remains in the estuarine environment and undergo migration to nearby coastal areas for the purpose o f breeding. Final stage of maturity is attained in the sea. The spawning occurs on the sea and the young ones migrate to estuarine area. The process of maturation is a continuous process and spawning take place within a prolonged period. The observed maturity stages of females were (i) immature (ii) inactive / resting (iii) Developing (active) (iv) mature (v) ripe and running (vi) spent and of males were (I) immature (ii) maturing and (iii) spent.

    Item Type: Thesis (Masters)
    Uncontrolled Keywords: Reproductive biology; Gerres filamentosus Cuvier
    Subjects: Dissertations
    Divisions: CMFRI-Kochi > Mariculture
    Subject Area > CMFRI > CMFRI-Kochi > Mariculture
    CMFRI-Kochi > Mariculture
    Subject Area > CMFRI-Kochi > Mariculture
    Depositing User: Users 17220 not found.
    Date Deposited: 17 Sep 2016 04:38
    Last Modified: 06 Oct 2016 10:44
    URI: http://eprints.cmfri.org.in/id/eprint/11110

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