## Abstract The number of aggressive interactions displayed by juveniles of __Diplodus sargus cadenati__ increases progressively in proportion to the number of intruders, with an upper threshold of more than 16 to 18 intruder fish. Beyond this density, resident aggressiveness decreases. The number
Dominance structure in small groups of juvenile white-seabream (Diplodus sargus cadenati de la paz, Bauchot and Daget 1974)
✍ Scribed by José J. Castro; Catalina Caballero
- Publisher
- John Wiley and Sons
- Year
- 1998
- Tongue
- English
- Weight
- 55 KB
- Volume
- 24
- Category
- Article
- ISSN
- 0096-140X
No coin nor oath required. For personal study only.
✦ Synopsis
Experiments were conducted to investigate the intraspecific aggressive interactions between juveniles of white-seabream (Diplodus sargus cadenati de la Paz, Bauchot and Daget 1974) in relation to dominance hierarchy in small groups. The agonistic interactions between juvenile white-seabream in small groups originated a peck-dominance hierarchy. The dominant (a-fish) generally interacted aggressively and most frequently with the subordinate that was next in line (b-fish) within the dominance hierarchy. This b-fish interacted aggressively more frequently with the g-fish, and so on. Results demonstrated that fish do not attack subordinates at random. The level of subordination in small groups of juvenile white-seabream was related to body size.
Generally, the more aggressive fish manifest a higher growth rate.
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