Length Measurement of Finfish and Shellfish: Its Uses in Fisheries Biology

Roul, Subal Kumar and Ghosh, Shubhadeep and Rohit, Prathibha (2020) Length Measurement of Finfish and Shellfish: Its Uses in Fisheries Biology. In: Conservation of Aquatic Biodiversity. College of Fisheries, Assam Agricultural University, Raha, Assam, pp. 269-277. ISBN 978-93-84679-89-7

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    The conservation and management process in fisheries depends on the type of stock and its assessment. Hence, it is important to understand the input parameters for the models used in the stock assessment. The length-frequency is one of the sensitive parameter which is used most frequently to know the dynamics of fish stocks in tropical waters. The correct data collection on the length measurement plays a vital rolein estimating the population parameters and to study the stock characteristics, biology, and taxonomy of fishes. The length measurements such as total length (for most fish species), fork length (tunas), standard length (used mostly in taxonomy/systematics), body length (needlefishes), lower jaw fork length (billfishes), pre-anal length (ribbonfishes), and disc width (rays) are considered as the standard measurement for fin fishes, whereas carapace length (prawns, lobsters and crayfishes), carapace width (crabs), mantle length (cephalopods), shell length, shell width, shell depth (bivalves),and shell height (gastropods)are used for the shell fishes. This chapter will providea detail insights on thedifferent standard length measurements and techniques used for the measurement of fish length.

    Item Type: Book Section
    Uncontrolled Keywords: Length measurement, taxonomy, finfish, shellfish, stock assessment
    Subjects: Fishery biology
    Fish and Fisheries
    Divisions: CMFRI-Puri FC
    Depositing User: Arun Surendran
    Date Deposited: 26 Jun 2020 05:34
    Last Modified: 26 Jun 2020 05:34
    URI: http://eprints.cmfri.org.in/id/eprint/14303

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