PUBLICATION
The influence of nutritional state on shoal choice in zebrafish, Danio rerio
- Authors
- Krause, J., Hartmann, N., and Pritchard, V.L.
- ID
- ZDB-PUB-990416-4
- Date
- 1999
- Source
- Animal behaviour 57: 771-775 (Journal)
- Registered Authors
- Pritchard, Victoria
- Keywords
- none
- MeSH Terms
- none
- PubMed
- 10202085 Full text @ Anim. Behav.
Citation
Krause, J., Hartmann, N., and Pritchard, V.L. (1999) The influence of nutritional state on shoal choice in zebrafish, Danio rerio. Animal behaviour. 57:771-775.
Abstract
We investigated the mechanisms and functions of shoal choice in relation to nutritional state in the zebrafish. Single fish that had been well fed or food deprived for 2 days were presented with a choice between two stimulus shoals. Food-deprived test fish showed a significant preference for well-fed stimulus fish over food-deprived ones whereas well-fed test fish did not exhibit any significant preference. Subsequent experiments showed that food-deprived test fish had a significantly higher foraging success in shoals consisting of well-fed individuals than in ones that comprised food-deprived fish. No difference in the locomotory behaviour of food-deprived and well-fed stimulus fish was found with respect to the proportion of time spent swimming (as opposed to being motionless), the proportion of time spent in the upper part of the test tank and the number of sharp turns. However, body weight, stomach width (measured directly behind the pectoral girdle) and ventro-dorsal height significantly decreased over a 48-h food-deprivation period. The potential use of the latter factors for the recognition of food-deprived individuals is discussed.
Genes / Markers
Expression
Phenotype
Mutations / Transgenics
Human Disease / Model
Sequence Targeting Reagents
Fish
Orthology
Engineered Foreign Genes
Mapping