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GENETICAL FEATURES OF GENETICAL FEATURES OF CHROMOSOMAL FORMCHROMOSOMAL FORM ««CC»»
OF MICROTUS OF MICROTUS MAXIMOWICZIIMAXIMOWICZII FROM THE FROM THE
RUSSIAN FAR EAST RUSSIAN FAR EAST Irina V. Kartavtseva, Irina N. Sheremetyeva
Institute of Biology & Soil Science, Far Eastern Branch of Russian Academy of Sciences, Vladivostok (Russia)
Anastasia B. Ryabkova Khabarovsk Antiplague Station, (Russia)
Svetlana A. Romanenko, Olga L. Gladkikh Institute of Molecular and Cellular Biology SB RAS (Russia)
Lubov V. Frisman
Institute of Complex Analysis of Regional Problems Far Eastern Branch of Russian Academy of Sciences, Birobidzhan (Russia)
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The role of chromosomal rearrangements in speciation still unclearly.
The maximowicz's vole Microtus maximowiczii (Rodentia) is convenient species for investigating this problem.
Introduction
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Rearrangements by Mejer et al., 1996
1 - is fusion of two middle sized pairs of metacentrics to formating of large metacentric.
All rearrangements for this species can be divided into three types:
2 - is Robertsonian rearrangements.
3 - is pericentric inversions of 4 pairs.
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Areal and terra typica points of Areal and terra typica points of M. maximowiczii M. maximowiczii
M. m. maximowiczii Schrenck 1858,
Amurskii and Khabarovskii regions in Russia, and in northeastern China
M. m. ungurensis Kastchenko 1913,
Buryatia and Chitinskii regions in Russia and North-Eastern Mongolia
ChinaMongolia
Russia
Korea
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For this species was described five chromosomal forms (Kartavtseva et al., 2008):A : 2n = 39 - 44, NF = 53 - 60
(Buryatiya), B: 2n = 38 - 42, NF = 54 - 57 (Buryatiya), C: 2n = 39 - 41, NF = 55 - 60 (Far East) D: 2n= 40=43, NF= 54-58 (Zabaikalskii
kray and E. Mongolia)V: 2n = 36 - 40, NF = 52 - 56
(Transbaikalia and W.Mongolia).
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Russia
Mongolia
China
«B»2n=38-42
«V»2n=40-43
«A»2n=39-44
«D»2n=40-43 «C»
2n=39-41
5 chromosomal forms of M. maximowiczii (Kartavtseva et al., 2008)
M. m. maximowiczii M. m. ungurensis
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M. m. ungurensis
M. m. maximowiczii
"A“2n=39-44
"C“2n=39-41
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control region mtDNA
Mmax45 Mmax41
Mmax38 Mmax39
Mmax42 Mmax40
Mmax37 Mmax43
Mmax44Mmax47
Mmax33 Mmax48 Mmax51
Mmax52Mmax49Mmax50
Mmax33 Mmax34
Mmax36 Mmax35
Mmax8Mmax11
Mmax7Mmax9 Mmax10
Mmax30 Mmax29
Mmax25 Mmax26
Mmax27Mmax31 Mmax28
Mmax32 Mmax1
Mmax2Mmax4
Mmax5 Mmax3
Mmax6 Mmax16 Mmax17
Mmax18 Mmax24
Mmax14 Mmax22 Mmax13 Mmax12 Mmax15 Mmax23 Mmax21 Mmax19 Mmax20
Microtus oeconomus
98
98
13
98
96
74
31
47
50
69
73
95
93
92
83
68
51
87
83
76
55
76
79
34
52
74
78
78
45
42
68
45
65
80
55
50
50
25
59
29
62
65
0.01
А
С
D
B
V
“Во
сто
чн
ая”
“Юж
ная
”“З
апад
ная
”
M. m. ungurensisM. m. ungurensis M. m. maximowiczii M. m. maximowiczii
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Material Map of chromosomal investigation
We investigated karyotype of 36 individuals of Maximowicz's vole from six earlier not investigated populations of the territory Middle Amur river (chromosomal form C).
Literature data: 2n=42 2n=39
Our data: (2n=40-41) New data
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2n=40-41
2n=40
2n=41
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Chromosomal forms “D” and “C”
2n=402n=42
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New chromosomal nomenclature of M. maximowiczii by fluorescent in situ hybridization (FISH)
M. maximowiczii FISH by Lemskaja et al., 2010 from chromosomal form “A”
M. maximowiczii (#2350)from Romanovka (chromosomal form “A”, our data)11
11,20
20
2n=41
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M. Maximowiczii (#2060)from Norskii reservation (our data)
20
2011
11
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Map of investigation of control region A B
mt DNA 940 np
A
A
B
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Conclusion
In the territory Middle Amur river (chromosomal form C):
Stabilization of karyotype with Robertsonian rearrangement chromosomal pairs 11 and 20 and inversion of pair 14
Two clasters of control region of mt DNA can be results of isolations of two animals groups.
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Thanks for attention