Journal of fish biology vol:72 issue:1 pages:301-309
Gut contents of sand goby Pomatoschistus minutus showed higher C and N isotope values than the food before consumption. This enrichment was more pronounced in the hindgut than in the foregut, probably because of preferential assimilation of C-12 and N-14 along the gastro-intestinal tract. The results indicated that the shift towards higher values in the alimentary canal occurs in the first 2 h after feeding. (C) 2008 The Authors Journal compilation (C) 2008 The Fisheries Society of the British Isles.