Abstract
This study was designed to analyze the influence of certain chemical substances on the feeding behavior of juvenile common snook. The following chemicals were tested: l-alanine, l-leucine, l-isoleucine, l-glutamic acid, glycine, l-proline, l-histidine, l-serine, l-lysine, l-arginine, inosine-5-triphosphate, and uridine. Feeding responses were studied in tanks containing one or two fish. The substances were placed in pellets made of agar, at a concentration of 0.01 M. The chemicals found to act as attractants were: uridine, l-isoleucine, and inosine with one fish; and those plus glycine, l-proline, l-arginine, l-leucine, and l-glutamic acid with two fish. The feeding responses were stronger with two fish, indicating that the number of fish had an influence on feeding behavior.
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