caa a22 4500 445295546 CHVBK 20180317142540.0 cr unu---uuuuu 170323e20100101xx s 000 0 eng 10.1134/S0032945210010042 doi (NATIONALLICENCE)springer-10.1134/S0032945210010042 On Intraspecies Forms of the Mongolian grayling ( Thymallus brevirostris Kessl.) from Hoton Nur Lake (Western Mongolia) [Elektronische Daten] [Yu. Slynko, B. Mendsaykhan, A. Kas'anov] Morphological and ecological traits of the Mongolian grayling Thymallus brevirostrisfrom Hoton Nur Lake are investigated with consideration of the assumption for a possible presence in this species of two morpho-ecological forms. The data on growth, feeding, sex, and age composition are presented. Plastic and meristic characters, distribution of fish in the water body, and feeding are analyzed. Within the age range of 3+ to 6+, in the population there are two groups of specimens differing in growth rate, diet, and some plastic characters of the head. These two groups may be designated as "predatory” and "benthos-feeding” forms. The predatory form lacks specimens of junior age groups; the benthos_feeding form lacks specimens older than seven years. Validity of these morpho-ecological groups is discussed. Pleiades Publishing, Ltd., 2010 Mongolian grayling nationallicence morpho-ecological form nationallicence population nationallicence morphology nationallicence feeding nationallicence growth nationallicence age nationallicence Slynko Yu Papanin Institute of the Biology of Inland Waters, Russian Academy of Sciences, 152742, Borok, Nekouzskii raion, Yaroslavl oblast, Russia aut Mendsaykhan B. Institute of Geoecology, Mongolian Academy of Sciences, Ulan Bator, Mongolia aut Kas'anov A. Papanin Institute of the Biology of Inland Waters, Russian Academy of Sciences, 152742, Borok, Nekouzskii raion, Yaroslavl oblast, Russia aut Journal of Ichthyology SP MAIK Nauka/Interperiodica 50/1(2010-01-01), 28-37 0032-9452 50:1<28 2010 50 11489 https://doi.org/10.1134/S0032945210010042 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1134/S0032945210010042 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Slynko Yu Papanin Institute of the Biology of Inland Waters, Russian Academy of Sciences, 152742, Borok, Nekouzskii raion, Yaroslavl oblast, Russia aut NATIONALLICENCE 700 1- Mendsaykhan B. Institute of Geoecology, Mongolian Academy of Sciences, Ulan Bator, Mongolia aut NATIONALLICENCE 700 1- Kas'anov A. Papanin Institute of the Biology of Inland Waters, Russian Academy of Sciences, 152742, Borok, Nekouzskii raion, Yaroslavl oblast, Russia aut NATIONALLICENCE 773 0- Journal of Ichthyology SP MAIK Nauka/Interperiodica 50/1(2010-01-01), 28-37 0032-9452 50:1<28 2010 50 11489 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer