Effects of the long term anosmia combined with vision deprivation on the taste sensitivity and feeding behavior of the rainbow trout Parasalmo (=Oncorhynchus) mykiss

Kasumyan, A.O.; Sidorov, S.S.

Авторы: Kasumyan A.O., Sidorov S.S.
Журнал: Journal of Ichthyology
Том: 52
Номер: 1
Год издания: 2012
Издательство: Pleiades Publishing, Inc.
Местоположение издательства: New York, USA
Первая страница: 109
Последняя страница: 119
DOI: 10.1134/S0032945212010079
Аннотация: We compared taste preferences, taste sensitivity, and behavior in testing food objects in the group of intact and two groups of sensory deprived rainbow trout Oncorhynchus mykiss yearlings. We demonstrated that longterm anosmia (for 9 months), as well as anosmia (for 9 months) combined with enucleation (object vision deprivation for 4 months), does not change the taste preference of fish for the agar pellets containing amino acids (L-alanine, L-proline, L-histidine, or glycine; 0.1 M). For all groups of fish, the threshold Lalanine concentration in pellets that caused a significant increase in consumption is 0.01 M. We showed that sensory deprived fish change their behavior of gustatory testing, namely, the rate of repeated snaps decreases as well as the pellet retention time in the mouth cavity. These results demonstrate that longterm anosmia combined with a partial vision deprivation does not significantly change the taste preferences and sensitivity in the fish that have no external taste buds. However, the observed reduction in the testing time of food objects and other changes in fish feeding behavior may suggest some functional alterations in the intraoral sensory systems (gustatory and/or tactile).
Добавил в систему: Касумян Александр Ованесович

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Effects of the long term anosmia combined with vision deprivation on the taste sensitivity and feeding behavior of the rainbow trout Parasalmo (=Oncorhynchus) mykissстатья

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