Τίτλος:
Effects of environmental enrichment on growth, aggressive behaviour and brain monoamines of gilthead seabream Sparus aurata reared under different social conditions
Γλώσσες Τεκμηρίου:
Αγγλικά
Περίληψη:
The presence of blue or red-brown substrate on the tank bottom has been previously reported as an efficient means of environmental enrichment for gilthead seabream. The present study aimed to investigate whether this enrichment is still beneficial when gilthead seabream is reared under different social conditions (i.e. a lower 4.9kgm-3 and a higher 9.7kgm-3 density). Water exchange was adjusted according to fish biomass to exclude density effects on water quality. In the enriched tanks single-colour glass gravel was used as substrate (blue and red-brown substrate, or BS and RBS respectively), while control tanks had no gravel. Growth, aggressive behaviour and size distribution results indicated that the lower density created a less favourable social environment. In both densities studied, BS enhanced growth, suppressed aggression and reduced brain serotonergic activity. In the condition of intense social interactions (i.e. the lower density) BS also reduced brain dopaminergic activity. These results along with the negative correlations observed between brain monoamines and fish body mass, indicated that substrate and density effects are socially-induced. However, there may be several biotic and/or abiotic factors interfering with substrate effects that should be investigated before the practical use of a substrate in land-based intensive aquaculture. © 2013 Elsevier Inc.
Συγγραφείς:
Batzina, A.
Dalla, C.
Papadopoulou-Daifoti, Z.
Karakatsouli, N.
Περιοδικό:
Comparative Biochemistry and Physiology - Part A: Molecular and Integrative Physiology
Εκδότης:
ELSEVIER SCIENCE INC 360 PARK AVE SOUTH, NEW YORK, NY 10010-1710 USA
Λέξεις-κλειδιά:
3,4 dihydroxyphenylacetic acid; 5 hydroxyindoleacetic acid; brain monoamine; dopamine; homovanillic acid; serotonin; dopamine; serotonin, aggression; aggressiveness; animal behavior; article; biomass; body mass; dopaminergic activity; environmental enrichment; foraging behavior; growth; nonhuman; serotoninergic system; social environment; social interaction; Sparus aurata; territoriality; water quality; aggression; animal; animal behavior; animal housing; brain; crowding (area); environment; fishery; growth, development and aging; mental stress; metabolism; psychology; sea bream; social behavior, Sparus aurata, Aggression; Animals; Behavior, Animal; Brain; Crowding; Dopamine; Environment; Fisheries; Housing, Animal; Sea Bream; Serotonin; Social Behavior; Stress, Psychological
DOI:
10.1016/j.cbpa.2013.12.001
