caa a22 4500 445296208 CHVBK 20180317142542.0 cr unu---uuuuu 170323e20100501xx s 000 0 eng 10.1134/S0032945210040065 doi (NATIONALLICENCE)springer-10.1134/S0032945210040065 The effect of starvation on taste preferences and testing behavior of food items in the carp Cyprinus carpio [Elektronische Daten] [A. Kasumyan, S. Sidorov] The present study is aimed at recording changes in taste preferences and behavior related to testing of artificial agar-agar (2%) pellets with free amino acids (21 amino acids, L-isomers, 0.1-0.001 M) in the carp Cyprinus carpio at increasing duration of starvation (2, 12, 18, 24, 72, and 144 h). Two hours after the end of feeding until satiation, the fish manifest a low foraging activity and, in most cases, they do not grasp the offered pellet. Later on, the feeding motivation in fish increases rapidly and up to 24 h of starvation each of the offered pellets is grasped. In the first hours of starvation the fish refuse from consumption of the grasped pellets even with highly attractive taste stimuli (extract of chironomids, cysteine). Up to 24 h of starvation, the fish restore the differentiated attitude to taste properties of amino acids. Of the latter, four amino acids increase, six decrease, and the other 11 do not render significant influence on consumption of pellets. Up to 72 h of starvation, at the background of continuing increase in the absolute level of consumption of pellets of all types, the taste preferences change but weakly. However, up to 144 h of starvation the number of deterrent amino acids was reduced to one (phenylalanine). At increasing duration of starvation, the number of repeated grasping of pellets changes weakly while duration of testing by fish of pellets of most types increases, especially abruptly in the first 24 h. It is assumed that the decrease or complete loss in fish of the negative reaction to substances, initially having aversive taste properties may be considered as the main mechanism providing expansion of the feeding spectrum and/or transfer of fish onto consumption of new items, initially consumed just occasionally or fully avoided. Pleiades Publishing, Ltd., 2010 chemoreception nationallicence foraging behavior nationallicence taste preferences nationallicence taste testing nationallicence starvation nationallicence Kasumyan A. Biology Department, Moscow State University, 119992, Moscow, Russia aut Sidorov S. Biology Department, Moscow State University, 119992, Moscow, Russia aut Journal of Ichthyology SP MAIK Nauka/Interperiodica 50/4(2010-05-01), 330-341 0032-9452 50:4<330 2010 50 11489 https://doi.org/10.1134/S0032945210040065 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1134/S0032945210040065 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Kasumyan A. Biology Department, Moscow State University, 119992, Moscow, Russia aut NATIONALLICENCE 700 1- Sidorov S. Biology Department, Moscow State University, 119992, Moscow, Russia aut NATIONALLICENCE 773 0- Journal of Ichthyology SP MAIK Nauka/Interperiodica 50/4(2010-05-01), 330-341 0032-9452 50:4<330 2010 50 11489 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer