caa a22 4500 445296453 CHVBK 20180317142543.0 cr unu---uuuuu 170323e20100301xx s 000 0 eng 10.1134/S0032945210020037 doi (NATIONALLICENCE)springer-10.1134/S0032945210020037 Seasonal races of chum salmon Oncorhynchus keta and their interrelations in Kamchatka Rivers [Elektronische Daten] [K. Kuzishchin, M. Gruzdeva, K. Savvaitova, D. Pavlov, J. Stanford] Dates of migration and spawning, size-age structure, and fecundity of seasonal races of chum salmon Oncorhynchus keta from the Kol River are reviewed, those of early summer, late summer, and autumn races, as well as localization and structure of their spawning grounds, bed-sediment particle size in the redds, hydrological and thermal conditions on spawning grounds, and meristic characters of races. Special traits of reproduction of seasonal races within the species range and in Kamchatka in particular are discussed. The number of seasonal races in rivers depends on the presence of various habitats suitable for spawning. In rivers with complicated hydrogeomorphological structure, the number of seasonal races increases. Variations of types of seasonal races in a particular river and in the whole species area are epigenetic, i.e., they depend on the hereditary genetic program and presence of conditions providing its realization via various channels. Pleiades Publishing, Ltd., 2010 seasonal races nationallicence reproduction ecology nationallicence species structure nationallicence population structure nationallicence Kuzishchin K. Biology Department, Moscow State University, 119899, Moscow, Russia aut Gruzdeva M. Biology Department, Moscow State University, 119899, Moscow, Russia aut Savvaitova K. Biology Department, Moscow State University, 119899, Moscow, Russia aut Pavlov D. Institute of Ecology and Evolution, Leninskii pr. 33, 119071, Moscow, Russia aut Stanford J. Flathead Lake Biological Station, University of Montana, Missoula, USA aut Journal of Ichthyology SP MAIK Nauka/Interperiodica 50/2(2010-03-01), 159-173 0032-9452 50:2<159 2010 50 11489 https://doi.org/10.1134/S0032945210020037 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1134/S0032945210020037 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Kuzishchin K. Biology Department, Moscow State University, 119899, Moscow, Russia aut NATIONALLICENCE 700 1- Gruzdeva M. Biology Department, Moscow State University, 119899, Moscow, Russia aut NATIONALLICENCE 700 1- Savvaitova K. Biology Department, Moscow State University, 119899, Moscow, Russia aut NATIONALLICENCE 700 1- Pavlov D. Institute of Ecology and Evolution, Leninskii pr. 33, 119071, Moscow, Russia aut NATIONALLICENCE 700 1- Stanford J. Flathead Lake Biological Station, University of Montana, Missoula, USA aut NATIONALLICENCE 773 0- Journal of Ichthyology SP MAIK Nauka/Interperiodica 50/2(2010-03-01), 159-173 0032-9452 50:2<159 2010 50 11489 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer