Effects of feeding time on approaching behavior to food odor in goldfish |
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| Authors: | Masafumi Amano Masayuki IiGo Kunio Yamamori |
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| Institution: | School of Fisheries Sciences, Kitasato University, Ofunato, Iwate 022-0101 and; Department of Applied Biological Chemistry, Faculty of Agriculture, Utsunomiya University, Utsunomiya, Tochigi 321-8505, Japan |
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| Abstract: | ABSTRACT: Effects of feeding time on approaching behavior to food odor in goldfish Carassius auratus were examined using the Y-maze flow-through system to test whether the behavior differed according to feeding time and experimental time. Fish were fed at 08.00, 12.00 or 16.00 hours once a day or three times (08.00, 12.00 and 16.00 hours) a day for at least 3 weeks under a natural photoperiod, and at 22 ± 2°C, preference reactions to food odor were tested at 08.00, 10.00, 12.00, 14.00 and 16.00 hours. The fish fed once a day showed significant positive approaching behavior only at the time when they were normally fed. The fish fed three times a day showed no significant positive approaching behavior. These results suggest that goldfish can remember when food is available and/or that there exists a mechanism to inhibit approaching behavior when food is not available. |
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| Keywords: | approaching behavior feeding time goldfish teleost Y-maze |
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