Diversity of coral reef fishes

Jasmine, S and George, Rani Mary and Anil, M K and Kingsly, H Jose (2019) Diversity of coral reef fishes. In: Stony corals, sponges and reef fishes off Enayam to Kollam, south-west coast of India. CMFRI Special Publication (119). ICAR - Central Marine Fisheries Research Institute, Kochi, pp. 105-121.

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    Abstract

    Reef fish diversity associated with coral reef patches around eleven sites from Enayam to Thirumullavaram, along the south-west coast of India, was investigated by Underwater Visual Census Method. Sampling was done in all the sites and a total of 70 species belonging to 48 genera, 31 families and 3 orders were recorded in the transect from these sites. In cumulative abundance, the family Pomacentridae dominated with 49% followed by Lutjanidae (9%), Siganidae (7.4%), Chaetodontidae (6.1%), Ballistidae (5.85%), Labridae (4.5%), Acanthuridae (3.3%), Scaridae (2.7%), Caesionidae (2%) and Carangidae (1%). In line with the abundance and number, Shannon diversity indices (H’) were maximum in Muttom (3.59), followed by Enayam (3.26) and Varkala (3.12) during the post-monsoon season. During pre-monsoon, almost all sites were having high H’ values ranging from 2.38 to 3.95, except three centres. The evenness (J’) of species distribution was more in site Enayam (0.91) during pre-monsoon and in post-monsoon. Odayam recorded the highest value of J’(0.99). The Bray-Curtis similarity was in the range of 4.47 to 55.17 during the pre-monsoon and from 6.8 to 62.77 in the post-monsoon period. The dendrogram plotted for the pre-monsoon period shows that Enayam and Adimalathura formed a group with maximum similarity of 55.18, to which Muttom got linked and in post-monsoon, Muttom and Enayam formed a group with maximum similarity of 65.62, to which Vizhinjam and Adimalathura got linked. There was no significant difference in the hydrographic parameters of the surface waters in the study stations. The study revealed high coral fish density in the area indicating the need for adopting appropriate conservation measures to prevent depletion of this resource which would affect the health of the reef system.

    Item Type: Book Section
    Uncontrolled Keywords: Coral reef, Diversity, Fishes, South-west coast of India
    Subjects: Marine Ecosystems > Coral Reefs
    Divisions: CMFRI-Kochi > Biodiversity
    Subject Area > CMFRI > CMFRI-Kochi > Biodiversity
    CMFRI-Kochi > Biodiversity
    Subject Area > CMFRI-Kochi > Biodiversity

    CMFRI-Vizhinjam
    Depositing User: Arun Surendran
    Date Deposited: 18 Nov 2019 06:19
    Last Modified: 18 Nov 2019 06:19
    URI: http://eprints.cmfri.org.in/id/eprint/13927

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