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Aggressiveness and locomotion activity related to hatching time in Matrinxã, Brycon amazonicus (Spix and Agassiz, 1829)

By Ellen Cristina M. de Souza, Jaquelinne P. da Silva, Marle Angélica Villacorta-Correa, Thaís B. Carvalho

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Abstract

Since agonistic interaction has been a major obstacle for fish hatchery and represents great economic losses for fish farmers, aggressiveness during the different post-hatching stages of the matrinxã, Brycon amazonicus, is analyzed and compared. Each group of three larvae was observed at six different sessions: 12, 24, 36, 48, 60 and 72±2h after hatching (HAH) for 20min, with 10 repetitions for each treatment. Aggressive behavior and motor activity were described by an ethogram: approach, attack, chase, flight, frontal display, mouth fight, mouth opening, threat, circular and linear swimming, contact and Ω-posture. Biometric measurements have indicated an increase in total length and mass (P

Publication Title Applied Animal Behaviour Science
Volume 157
Pages 146-151
ISBN/ISSN 0168-1591
DOI 10.1016/j.applanim.2014.05.009
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Tags
  1. Aggressive behavior
  2. Aquacultural and fisheries
  3. Fish
  4. survival
  5. swimming