ISSN 10227954, Russian Journal of Genetics, 2014, Vol. 50, No. 8, pp. 838–845. © Pleiades Publishing, Inc., 2014.
Original Russian Text © O.N. Zhigileva, 2014, published in Genetika, 2014, Vol. 50, No. 8, pp. 950–958.
In Western Siberia, three mouse species are
found. These are the cosmopolitan house mouse
L., 1758), the transPalearctic species
of pygmy wood mouse (
1811), and the striped field mouse (
Pallas, 1778). These three species are well studied with
respect to their genetics. These data are uneven, how
ever, with respect to the different parts of the species
ranges. In particular, the data on allozyme variability
in Western Siberian mouse populations are scarce .
The interest in analysis of the population genetic
structure in mouse species is associated with the differ
ent synanthrophy levels of these species, making it
possible to follow the influence of the urbanization
factor on the genetic structure of animal populations.
The pygmy wood mouse
is a freeliving
species, not dependent upon man. The house mouse
is true synanthropic species, while the
stripped field mouse
is a semisynanthropic
species. The later species is evolutionarily young, and
it is at the first stage of intraspecific differentiation and
morphogenesis . It is suggested that, at present,
intensive synanthropization of this species takes place.
In this study, intersettlement territories are understood as the
territories not included in the cities and settlements, and resi
dential territories are areas within the cities and settlements.
Distinguished for its eurybiontness and tolerance to
the anthropogenic factor, the stripped field mouse
populates natural and urbanized territories and is
abundant in different biotas.
The house mouse fauna of urbanized territories
includes several species of the superspecies complex
s. lato. In addition, a great number of
subspecies and geographical forms of the house
mouse, often with ambiguous status, are recognized.
Different species of house mouse can live in sympa
thry, forming larger or smaller hybrid zones [3–5]. The
experimental venue was characterized by the presence
. However, the fauna of one and the
same city could often include several subspecies, spe
cies, and hybrid forms. Subspecies mosaicism and
hybrid origin are also characteristic of the house
mouse fauna of Siberia . A mixed mouse population
could be formed as a result of random manassisted
invasions . A combination of the ancient events of
territory colonization and differentiation of the mouse
gene pool with later dispersal under the influence of
anthropogenic factors, as well as further possibly
repeated hybridization, were the main factors in deter
mining the formation of contemporary gene geogra
phy and the dispersal pathways of the synanthropic
populations of house mouse .
The objective of the present study was to describe
the allozyme polymorphism and population genetic
Allozyme Variability and the Population Genetic Structure
of the Mice
in Western Siberia
O. N. Zhigileva
Tyumen State University, Department of Ecology and Genetics, Tyumen, 625003 Russia
Received January 23, 2014
—Of the three mouse species inhabiting Western Siberia, the striped field mouse is characterized by
the highest level of genetic variation, a uniform distribution of polymorphism indicators, lower values of
genetic differentiation, and higher values of gene flow, as compared to the house mouse and pygmy wood
mouse. The house mouse populations have abrupt changes in the parameters of protein polymorphism in dif
ferent localities. This is due to the considerable spatial dissociation of the cities of Siberia and the differing
histories of their settlement. Inhabitation of an urban area leads to the partitioning of striped wood mouse
populations into groups that considerably differ in allele frequencies and genetic variation indices. These
changes are not related to the degree of urbanization and are determined by genetic drift. Some characteris
tics of these groups, like reduced variability, heterozygote deficit, and deviation from the Hardy–Weinberg
equilibrium, limit their adaptive potential and make them dependent on the populations of intersettlement