Spring cannibalism on 1 year walleye pollock in the Doto area, northern Japan: is it density dependent?

• Published in: Journal of fish biology Vol. 59; no. 3; pp. 645 - 656
• Main Authors: Yamamura, O., Yabuki, K., Shida, O., Watanabe, K., Honda, S.
• Format: Journal Article
• Language: English
• Published: Oxford, UK Blackwell Publishing Ltd 01.09.2001; Blackwell
• Subjects: Agnatha. Pisces; Animal and plant ecology; Animal, plant and microbial ecology; Animals; Autoecology; Biological and medical sciences; cannibalism; density-dependence; Fundamental and applied biological sciences. Psychology; Gadidae; predator-prey size relationship; Vertebrata; Pacific Ocean; Asia; Japan; North Pacific; Predator prey relation; Theragra chalcogramma; Cannibalism; Feeding; Interannual variation; Marine environment; Prey; Vertebrata; Diet; Seasonal variation; Pisces; Body size; Density dependence; Predator; Population density

Cannibalism in walleye pollock off the eastern coast of the Hokkaido Island, Japan was important only during spring (April to June), and its importance increased from 0% in dry mass for <200 mm LS fish to 48·9% for >400 mm LS fish. Most of the prey was represented by age 1 year fish, showing a...