Dynamic of the B Chromosome System in the Population of the Korean Field Mouse Apodemus peninsulae (Mammalia, Rodentia) in the Northern Region of the Pritelets Taiga of the Altai Mountains over a 36-Year Period

Zhigarev, I.A.; Borisov, Y.M.

Авторы: Zhigarev I.A., Borisov Yu M.
Журнал: Russian Journal of Genetics
Том: 60
Номер: 6
Год издания: 2024
Издательство: Maik Nauka/Interperiodica Publishing
Местоположение издательства: Russian Federation
Первая страница: 724
Последняя страница: 736
DOI: 10.1134/s1022795424700169
Аннотация: The process of changes in the number and morphology of B chromosomes in the populations ofmice (Apodemus peninsulae) in the northern region of the Pritelets taiga of the Altai Mountains over a 36-yearperiod (1978‒2014) was traced. Three time phases were distinguished. From 1978 to 2002 (24 years)—a phaseof steady growth of the number of B chromosomes, with a relatively uniform average increase of1.4 chromosomes per decade (from 3.17 ± 0.2 to 6.5 ± 0.54); the phase of stabilization of the indicator whenit consistently ranged between 6.3 and 6.9 (2002–2012), although the indicator was at least doubled comparedto early 1980s (differences are significant); and the third period (2012‒2014) of the emerging trend ofdecrease in the number of supplementary chromosomes (differences are also significant). The change in theconditional mass index of B chromosomes (mB) also had similar dynamics, and it was at its maximum for thespecies during the period of stabilization. The dynamics of different morphotypes of B chromosomes showedan unequal contribution to the overall dynamics. The main contribution was made by large, medium-sized,and small metacentric B chromosomes. Micro-B chromosomes and acrocentrics were absent in the growthphase and appeared in the stabilization phase at the maximum of other indicators.
Добавил в систему: Жигарев Игорь Александрович

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Dynamic of the B Chromosome System in the Population of the Korean Field Mouse Apodemus peninsulae (Mammalia, Rodentia) in the Northern Region of the Pritelets Taiga of the Altai Mountains over a 36-Year Periodстатья

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