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    Mass mortality of hatchery-reared milkfish (Chanos chanos) and mangrove red snapper (Lutjanus argentimaculatus) caused by Amyloodinium ocellatum (Dinoflagellida)

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    Date
    2004
    Author
    Cruz-Lacierda, Erlinda R.
    Maeno, Yukio
    Pineda, April Joy T.
    Matey, Victoria E.
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    783
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    Abstract
    Outbreaks of heavy infestation by the parasitic dinoflagellate Amyloodinium ocellatum in hatchery-reared milkfish (Chanos chanos) and mangrove red snapper (Lutjanus argentimaculatus) caused 100% mortality events in hatcheries in the Philippines. Parasites were recorded on the body surface in 14-day-old milkfish fry and on both skin and gills in 2-month-old snapper. Trophonts of A. ocellatum caused local erosions of fish skin and degeneration of epithelial cells at the sites of the parasite's attachment to the body surface. Separation and hyperplasia of gill epithelium and fusion of secondary lamellae at the distal parts of the gill filaments were common. High pathogenicity of A. ocellatum to fish may be attributed to the severe alterations of the fish gills, the disruption of the host's skin, and feeding of trophonts on hosts' epithelial cells. In-vivo treatments of A. ocellatum-infested snapper with a 1 h freshwater bath and 200 ppm H2O2 showed promising results. This is the first report of A. ocellatum infestation in milkfish and mangrove red snapper in the Philippines.
    URI
    http://hdl.handle.net/10862/2010
    Suggested Citation
    Cruz-Lacierda, E. R., Maeno, Y., Pineda, A. J. T., & Matey, V. E. (2004). Mass mortality of hatchery-reared milkfish (Chanos chanos) and mangrove red snapper (Lutjanus argentimaculatus) caused by Amyloodinium ocellatum (Dinoflagellida). Aquaculture, 236(1-4), 85-94.
    DOI
    10.1016/j.aquaculture.2004.02.012
    Type
    Article
    ISSN
    0044-8486
    Subject
    Ectoparasites; Fish culture; Fish kill; Hatcheries; Infestation; Mangroves; Marine fish; Mortality causes; New records; Noxious organisms; Parasitic diseases; Parasitology; Amyloodinium ocellatum; Chanos chanos; Dinoflagellida; Lutjanus argentimaculatus; Philippines
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    • Journal Articles [1108]


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