english
français
RP2E INRA Université de Lorraine

Publications

Temperature modifies activity, inter-individual relationships and group structure in a fish

Current Zoology, 63 (2), pp. 175-183.

Colchen, T., Teletchea, F., Fontaine, P., Pasquet, A.

2016

A host of abiotic factors modify fish social behavior. However, few studies have characterized the effects of temperature on behavior. In this study, brown trout Salmo trutta fry were reared at 5 dif- ferent temperatures (4 C, 6 C, 8 C, 10 C, and 12 C). In order to characterize group structure, 3 be- havioral parameters were investigated: group social structure (based on inter-individual distances), inter-individual relationships (based on physical contacts), and individual activity. These behavioral

parameters were studied at the emergence stage, which corresponds to a switch from a social gre- garious life in the gravel to a solitary one in the water column. Data analysis showed that the inter- individual distances increased with increasing temperature, particularly the nearest neighbor distance. The mean number of physical contacts between fry increased at both low and high tem- peratures. At high temperatures, most fry moved apart from each other after a physical contact.

Swimming activity decreased at both the lower and upper temperatures (18% of activity at 4 C, 38% at 8 C, and 12% at 12 C). This study showed that temperature modifies brown trout fry activity, inter-individual relationships, and social behavior, which all affect group cohesion before emer- gence and can influence their survival and dispersal. 

Imprimer le document

197 Publications depuis 2013

Imprimer le listing

2018

ACL - Articles comité de lecture référencés bases de données AERES

2017

ACL - Articles comité de lecture référencés bases de données AERES

ACLN - Articles comité de lecture non-référencés bases de données AERES

2016

ACL - Articles comité de lecture référencés bases de données AERES

2015

ACL - Articles comité de lecture référencés bases de données AERES

ACLN - Articles comité de lecture non-référencés bases de données AERES

2014

ACL - Articles comité de lecture référencés bases de données AERES

ACLN - Articles comité de lecture non-référencés bases de données AERES

2013

ACL - Articles comité de lecture référencés bases de données AERES

ACLN - Articles comité de lecture non-référencés bases de données AERES

Voir les productions antérieures

Toutes les productions scientifiques