caa a22 4500 445295988 CHVBK 20180317142542.0 cr unu---uuuuu 170323e20100801xx s 000 0 eng 10.1134/S0032945210070052 doi (NATIONALLICENCE)springer-10.1134/S0032945210070052 Comparative analysis of oocyte growth in two forms of Baikal grayling Thymallus baicalensis (Thymallidae) [Elektronische Daten] [A. Zaitseva, N. Smirnova-Zalumi, N. Zakharova] Size characteristics of oocytes of the elder generation of the end of previtollogenesis, as well as of the beginning and middle of the phase of cytoplasm vacuolization in two forms of Baikal grayling Thymallus baicalensis were studied. In each form, the dependence of oocyte parameter on the age and size of females is traced. During the studied phases of development—at the termination of the period of previtellogenesis and at the proper beginning of the period of vitellogenesis—oocytes of the white and black graylings have similar sizes; cytoplasm vacuolization in white grayling proceeds less actively. It was established that differences in the diameter of mature ovicells in the black and white Baikal graylings result from dissimilar rate of accumulation of trophic substances in the oocytes of the given forms of this species and are determined by differences in the rate of growth of oocytes during the formation in them of yolk inclusions. Pleiades Publishing, Ltd., 2010 forms of Baikal grayling nationallicence Thymallus baicalensis nationallicence oocyte sizes nationallicence previtollogenesis nationallicence vacuolization nationallicence Zaitseva A. Institute of Limnology, Siberian Branch, Russian Academy of Sciences (LIN SO RAS), ul. Ulan-Batorskaya 3, 664033, Irkutsk, Russia aut Smirnova-Zalumi N. Irkutsk State University, ul. K. Marksa 1, 664033, Irkutsk, Russia aut Zakharova N. Institute of Limnology, Siberian Branch, Russian Academy of Sciences (LIN SO RAS), ul. Ulan-Batorskaya 3, 664033, Irkutsk, Russia aut Journal of Ichthyology SP MAIK Nauka/Interperiodica 50/7(2010-08-01), 536-542 0032-9452 50:7<536 2010 50 11489 https://doi.org/10.1134/S0032945210070052 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1134/S0032945210070052 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Zaitseva A. Institute of Limnology, Siberian Branch, Russian Academy of Sciences (LIN SO RAS), ul. Ulan-Batorskaya 3, 664033, Irkutsk, Russia aut NATIONALLICENCE 700 1- Smirnova-Zalumi N. Irkutsk State University, ul. K. Marksa 1, 664033, Irkutsk, Russia aut NATIONALLICENCE 700 1- Zakharova N. Institute of Limnology, Siberian Branch, Russian Academy of Sciences (LIN SO RAS), ul. Ulan-Batorskaya 3, 664033, Irkutsk, Russia aut NATIONALLICENCE 773 0- Journal of Ichthyology SP MAIK Nauka/Interperiodica 50/7(2010-08-01), 536-542 0032-9452 50:7<536 2010 50 11489 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer