Feeding Behavior in Fish: Inluence of Long-Term Light Deprivation on Serotonin Effects in the Carp Cyprinus carpio L.
- Autores: Kuz’mina V.1, Garina D.1
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Afiliações:
- Papanin Institute for Biology of Inland Waters
- Edição: Volume 55, Nº 6 (2019)
- Páginas: 475-482
- Seção: Comparative and Ontogenic Physiology
- URL: https://journals.rcsi.science/0022-0930/article/view/159856
- DOI: https://doi.org/10.1134/S002209301906005X
- ID: 159856
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Resumo
The influence of long-term light deprivation (1 and 4 months) on the latency of leaving a start chamber (t1), feeding latency (t2), and food intake (or ration, R) was studied in carp Cyprinus carpio juveniles injected with serotonin (5-HT), as observed during 96 h post injection. It was found that 5-HT has no significant effect on t1 regardless of the illuminance regime (constant dark in experiment vs. alternating light/dark in control) while exerting a maximum effect on t2. One hour after 5-HT injection, t2 increases 5 times in fish deprived of light for 1 month and 11.6 times in those deprived of light for 4 months as compared to the control group. A significant 5-HT-induced decrease in R was observed after 1 month both in experimental and control groups and after 4 months in the experimental (light-deprived) group only. Possible mechanisms underlying the effect of 5-HT on the above parameters of fish feeding behavior under conditions of long-term light deprivation are discussed.
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Sobre autores
V. Kuz’mina
Papanin Institute for Biology of Inland Waters
Autor responsável pela correspondência
Email: vkuzmina@ibiw.yaroslavl.ru
Rússia, Borok
D. Garina
Papanin Institute for Biology of Inland Waters
Email: vkuzmina@ibiw.yaroslavl.ru
Rússia, Borok