Morphological, anatomical and reproductive features of Loliolus (Loliolus) hardwickei (Gray, 1849) caught from the Vizhinjam Coast, Kerala, India

Neethu Raj, P and Anil, M K and Rohini Krishna, M V and Raheem, P K (2018) Morphological, anatomical and reproductive features of Loliolus (Loliolus) hardwickei (Gray, 1849) caught from the Vizhinjam Coast, Kerala, India. Indian Journal of Fisheries, 65 (1). pp. 32-39.

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    Abstract

    The morphological, anatomical and reproductive features of the little Indian squid, Loliolus (Loliolus) hardwickei (Gray, 1849) were studied based on samples collected from boat seine operated along the Vizhinjam Coast. The species was found to be a new entrant to the fishery along the Vizhinjam Coast. A total of 27 morphometric characters were measured and 13 indices were calculated and reported. Dorsal mantle length (DML) of the specimens ranged from 2.6 to 6.8 cm with a mean DML of 4.5±0.88 cm. The largest specimen observed was a male with DML 6.8 cm. Fully mature (Stage IV) specimens were found to have a higher gonadosomatic index (12.54±2.64 in females and 0.8±0.21 in males). Average length and width of spermatophores were 3.078±0.092 mm and 0.11±0.02 mm respectively. Samples with higher DML were in advanced maturity stages (Stage V). Size composition (DML) of samples revealed that 50% of squids were within the 4-5 cm size range.

    Item Type: Article
    Uncontrolled Keywords: Anatomy, Gonadosomatic index, GSI, Loliolus (Loliolus) hardwickei, Morphology, Reproductive stages, Size composition
    Subjects: Molluscan Fisheries > Cephalopods
    Divisions: CMFRI-Kochi > Marine Capture > Pelagic Fisheries
    Subject Area > CMFRI > CMFRI-Kochi > Marine Capture > Pelagic Fisheries
    CMFRI-Kochi > Marine Capture > Pelagic Fisheries
    Subject Area > CMFRI-Kochi > Marine Capture > Pelagic Fisheries
    Depositing User: Arun Surendran
    Date Deposited: 28 Apr 2018 08:30
    Last Modified: 28 Apr 2018 08:30
    URI: http://eprints.cmfri.org.in/id/eprint/12693

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