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    Size- and weight-dependent cannibalism in hatchery-bred sea bass (Lates calcarifer Bloch)

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    Date
    1991
    Author
    Parazo, M. M.
    Avila, Enrique M.
    Reyes Jr., Deogracias M.
    Page views
    1,166
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    Abstract
    The relationship of predator size to maximum prey size, and predator weight to weight of prey consumed among cannibalistic sea bass (Lates calcarifer Bloch) in a hatchery were assessed. Maximum prey size was computed from morphological measurements (predator mouth width, prey body depth and fish total length), while prey consumption was determined from predators kept in experimental beakers and fed only prey sea bass for a 7-day period. Maximum prey size was 61–67 % of predator total length (TLprey = 0.5944 TLpredator+ 0.0724). Gut dissection of predators showed that size of ingested prey increased with increasing predator size not exceeding the maximum size limit indicated by the above equation. Daily prey consumption of predators in the beakers was expressed as WPrey = -0.2407 Wpredator+ 0.7697Wpredator-0.1141. During hatchery rearing of sea bass, fish with length differences of more than 33 % must be separated and food of appropriate size provided to limit cannibalism.
    URI
    http://hdl.handle.net/10862/1345
    Suggested Citation
    Parazo, M. M., Avila, E. M., & Reyes Jr., D. M. (1991). Size- and weight-dependent cannibalism in hatchery-bred sea bass (Lates calcarifer Bloch). Journal of Applied Ichthyology, 7(1), 1-7.
    DOI
    10.1111/j.1439-0426.1991.tb00588.x
    Type
    Article
    ISSN
    1439-0426
    Subject
    Cannibalism; Correlation analysis; Hatcheries; Length-weight relationships; Marine fish; Predation; Predators; Prey selection; Fish culture; Sea bass; Lates calcarifer
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    • Journal Articles [1100]


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