The influence of dominance and diet on individual odours in MHC identical juvenile Arctic charr siblings

• Published in: Journal of Fish Biology
• Main Authors: Olsen, KH, Grahn, M, Lohm, Jakob
• Format: Article in Journal/Newspaper
• Language: English
• Published: Wiley-Blackwell 2003
• Subjects: Ecology; individual odours; dominance; Arctic charr; diet; MHC; siblings; Arctic; Salvelinus alpinus
• Online Access: https://lup.lub.lu.se/record/297909; https://doi.org/10.1046/j.1095-8649.2003.00185.x

No difference in attraction was observed in sibling Artic charr Salvelinus alpinus between water scented by dominant or subordinate major histocompability complex (MHC) identical fish observed in a two-choice fluviarium. In a second experiment, MHC identical sibling donors were given different types of food pellets before the preference test. The test fish showed a significant attraction to the sibling given the same kind of food as the test fish itself during the first 6 h of the fluviarium tests. The results suggest that diet has an influence on the odours released and can, in addition to MHC related odours, be used for information relating to group member identity. (C) 2003 The Fisheries Society of the British Isles.