Вкусовые предпочтения и пищевое поведение трёхиглой колюшки Gasterosteus aculeatus в морской и пресной воде

Михайлова, Е.С.; Касумян, А.О.

Авторы: Михайлова Е.С., Касумян А.О.
Журнал: Вопросы ихтиологии
Том: 50
Номер: 6
Год издания: 2010
Издательство: ФГБУ "Издательство "Наука"
Местоположение издательства: Москва
Первая страница: 828
Последняя страница: 840
DOI: 10.1134/S0032945210090134
Аннотация: Taste preferences of four classic taste substances (NaCl, CaCl2, and sucrose, all—10%; and citric acid—5%), and 21 free amino acids (Lisomers, 0.1–0.001 M) for adult threespine stickebacks Gasterosteus aculeatus is determined in marine and fresh waters. Gustatory responses were compared in the fish caught in marine and placed in marine water or in freshwater and in the fish caught in a stream mouth during spawning migration and in a closed freshwater water body. Taste preferences of threespine sticklebacks depend little on water salinity. Of amino acids, cysteine, glutamic acid, and aspartic acid are attractive, as well as glutamine for the fish living permanently in fresh water. Differences in the reaction of fish to agar–agar pellets with NaCl, CaCl2, and sucrose are considered to be insignificant. Maximum changes occur in the attitude of threespine sticklebacks to citric acid whose taste is palatable to fish in fresh water. It is assumed that the com ponents of marine water render a modifying action on gustatory receptors, the function of receptor cell, and influence susceptibility of fish to the taste of citric acid and, probably, of some other substances. The foraging behavior of fish in fresh water is more active, they consume more pellets, make more numerous repeated grasps, and keep pellets longer in the mouth cavity before swallowing or rejection. It is concluded that, in migratory fish, the abrupt change of external osmotic conditions is not accompanied by noticeable changes on taste preferences and the majority of substances retain their gustatory properties.
Добавил в систему: Михайлова Елена Сергеевна

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Вкусовые предпочтения и пищевое поведение трёхиглой колюшки Gasterosteus aculeatus в морской и пресной водестатья

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