Aggressive Behavior and Cannibalism among Larval and Juvenile Size-classes in Mass-cultured Greater Amberjack <I>Seriola dumerili</I>

DOI JASI Web Site
  • Hashimoto Hiroshi
    Yaeyama Laboratory, Seikai National Fisheries Research Institute, Fisheries Research Agency
  • Hayashi Tomohiro
    Department of Marine Biosciences, Graduate School of Marine Science and Technology, Tokyo University of Marine Science and Technology
  • Hamasaki Katsuyuki
    Department of Marine Biosciences, Graduate School of Marine Science and Technology, Tokyo University of Marine Science and Technology
  • Kai Isao
    Miyazaki Fisheries Promotion Association
  • Hokazono Hiroto
    Kagoshima Prefectural Fisheries Technology and Development Center
  • Nakamura Akihiko
    Kagoshima Prefectural Fisheries Technology and Development Center
  • Iwasaki Takashi
    Yaeyama Laboratory, Seikai National Fisheries Research Institute, Fisheries Research Agency
  • Teruya Kazuhisa
    Yaeyama Laboratory, Seikai National Fisheries Research Institute, Fisheries Research Agency
  • Hamada Kazuhisa
    Komame Laboratory, National Research Institute of Aquaculture, Fisheries Research Agency
  • Mushiake Keiichi
    Seikai National Fisheries Research Institute, Fisheries Research Agency

Bibliographic Information

Other Title
  • カンパチ種苗生産における仔稚魚の体サイズ差と攻撃行動および共食いの関連
  • カンパチ シュビョウ セイサン ニ オケル シチギョ ノ カラダ サイズサ ト コウゲキ コウドウ オヨビ トモグイ ノ カンレン

Search this article

Abstract

To elucidate the impact of aggressive behavior and cannibalism on mortality in mass-cultured larvae and juveniles of the greater amberjack Seriola dumerili, we clarified the relationship between predator-prey body size and fish growth, mortality and aggressive behavior. Aggressive behavior increased from 18 to 19 days post hatching and was positively associated with an increase in fish mortality. The size of cannibalistic fish was inferred based on the body height of prey fish and the mouth-size of predatory fish, as well as measurements of the total lengths of predatory fish and prey fish collected from mass-culture tanks. Body-size ratios of prey fish to predatory fish among fish exhibiting aggressive behavior, having partially swallowed prey (cannibals occasionally suffocated due to an inability to swallow prey), or having swallowed prey whole, were approximately ≤0.75, ≤0.63 and ≤0.35, respectively. Variations in the body size of fish reared in the same mass-culture tanks may elicit aggressive behavior in the larger juvenile fish, resulting in mass mortality of the smaller fish.

Journal

  • Aquaculture Science

    Aquaculture Science 62 (3), 259-271, 2014

    Japanese Society for Aquaculture Science

Keywords

Details 詳細情報について

Report a problem

Back to top