Consulta: subjectFacets:"Agonistic interactions"
Registros recuperados: 2
Data/hora: 11/06/2024 05:27:26

Behavioral and neurophysiological responses of European sea bass groups reared under food constraint
Provedor de dados: 5
Autores: Di Poi, Carole; Attia, J; Bouchut, C; Dutto, Gilbert; Coves, Denis; Beauchaud, M.
The individual food-demand behavior of juvenile European sea bass (Dicentrarchus labrax, L.) reared in groups under self-feeding conditions was investigated. The triggering activity on self-feeder, i.e. index of the food-demand activity, agonistic interactions and territorial behavior were monitored for periods of 42 to 68 days in six groups of 50 fish. The specific growth rate was calculated and the brain serotonergic activity was used as a stable index of social stress. Inter-individual differences appeared in triggering activity and three groups were distinguished: 3-5 high-triggering fish, 17-30 low-triggering fish and the remaining individuals were null-triggering fish. There were no significant differences in specific growth rates calculated at the...
Tipo: Text
Palavras-chave: Social stress; Brain serotonergic activity; Territorial behavior; Agonistic interactions; Self feeding; European sea bass; Triggering activity; Food demand behavior.
Ano: 2007
URL: http://archimer.ifremer.fr/doc/2007/publication-2637.pdf

Dangerous neighborhood: saurophagy between syntopic Tropidurus lizards
Provedor de dados: 49
Autores: Passos,Daniel Cunha; Monteiro,Felipe Augusto Correia; Nogueira,Carlos Henrique de Oliveira.
Saurophagy constitutes an important source of mortality among lizards and has been reported for the genus Tropidurus. However, the extension of this behavior remains unknown. Herein, we record the predation of T. jaguaribanus by its congener T. hispidus. This is the first report of saurophagy among different species of syntopicTropidurus. Furthermore, whereas published records of saurophagy tend to be directed against juveniles, this case involved two adult individuals.
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Predation; Mortality; Agonistic interactions; Tropiduridae; Caatinga.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032016000100405