GENETIC DRIFT AND GENE FLOW IN POPULATIONS OF THE GREAT GERBILS
https://doi.org/10.29413/ABS.2018-3.4.22
Abstract
The article describes the additional evolutionary factors, apart from natural selection, which can influence the genetic structure of the populations of the main carriers of the plague microbe – the great gerbil. The influence of genetic drift on random fluctuation of alleles is considered. With the help of a stochastic matrix, on the example of the family group of gerbils consisting of four individuals, the probabilities of the transition of allele frequencies from parents to offspring are calculated. Based on the previously calculated size of the neighborhood in gerbils, it is concluded that any large population of great gerbils can be considered as small in terms of deviation of gene frequencies. In such small groups – parcels – the drift of genes will be of great importance. In addition, the effect of the gene flow on the genetic structure of the gerbil population on the example of the simplest population model “continent-island” is considered. The dynamics of changes in allelic frequencies for 100 generations has been calculated. It is shown that the allele frequency during the 20-30 generations changes at the maximum rate, and then slows as the equilibrium is approached. It is concluded that different populations of gerbils should be considered as separate historically formed structures, with different sequence of influence of external environmental factors on them.
About the Author
V. V. Sutyagin
Taldykorgan Antiplague Station
Kazakhstan
Kazakhstan
ul. Tauelsizdik 104, Taldykorgan, 004000, Kazakhstan
the Head of the Laboratory of Emergency Diagnostics of Quarantine and Highly Infectious Diseases (PCR and ELISA), Taldykorgan Anti-Plague Station
tel. 8 (7282) 30-84-64
References
1. Алексеев А.Ф. Продолжительность жизни и особенности подвижности больших песчанок в северо-западных Кызылкумах // Матер. VIII науч. конф. противочумных учреждений Средней Азии и Казахстана. – 1974. – С. 220–222. Alekseev AF. (1974). Life expectancy and features of mobility of great gerbils in the northwestern Kyzylkum [Prodolzhitel’nost’ zhizni i osobennosti podvizhnosti bol’shikh peschanok v severo- zapadnykh Kyzylkumakh]. Materialy VIII nauchnoy konferentsii protivochumnykh uchrezhdeniy Sredney Azii i Kazakhstana, 220-222.
2. Алтухов Ю.П. Генетические процессы в популяциях: учеб. пособие; 3-е изд., перераб. и доп. – М.: ИКЦ «Академкнига», 2003. – С. 42–44. Altukhov YuP. (2003). Genetic processes in populations [Geneticheskie protsessy v populyatsiyakh]. Moskva, 42-44.
3. Панченко А.Н., Волков В.М., Куницкий В.Н., Павлов А.Н., Яковлев М.Г. Подвижность больших песчанок в северо-восточной части Прикаспийской низменности // Матер. VII науч. конф. противочумных учреждений Средней Азии и Казахстана. – 1971. – С. 323– 326. Panchenko AN, Volkov VM, Kunitskiy VN, Pavlov AN, YakovlevMG. (1971). The mobility of great gerbils in the northeastern part of the Caspian lowland [Podvizhnost’ bol’shikh peschanok v severo-vostochnoy chasti Prikaspiyskoy nizmennosti]. Materialy VII nauchnoy konferentsii protivochumnykh uchrezhdeniy Sredney Azii i Kazakhstana, 323-326.
4. Сутягин В.В., Бердибеков А.Т. Эффективная численность и размер соседства в популяции большой песчанки // Бюл. МОИП. Отдел биологический. – 2017. – Т. 122, № 2. – С. 3–7. Sutyagin VV, Berdibekov AT. (2017). Effective number and size of the neighborhood in the great gerbil population [Effektivnaya chislennost’ i razmer sosedstva v populyatsii bol’shoy peschanki]. Byul. MOIP. Otdel biologicheskiy, 122 (2), 3-7.
5. Сухов В.В., Айткалиев Б.А. Активность каталазы крови у больших песчанок и некоторых других млекопитающих из Приаральско-Каракумского мезоочага чумы // Тез. Х науч. конф. противочумных учреждений Средней Азии и Казахстана. – 1979. – Вып. 2. – С. 60–62. Sukhov VV, Aytkaliev BA. (1979). Activity of catalase of blood in large gerbils and some other mammals from the Aral-Karakum mesozochag of the plague [Aktivnost’ katalazy krovi u bol’shikh peschanok i nekotorykh drugikh mlekopitayushchikh iz Priaral’sko-Karakumskogo mezoochaga chumy]. Tezisy X nauchnoy konferentsii
6. protivochumnykh uchrezhdeniy Sredney Azii i Kazakhstana, (2), 60-62.
7. Хедрик Ф. Генетика популяций. – М.: Мир, 2003. – 588 с. Khedrik F. (2003). Genetics of populations [Genetika populyatsiy]. Moskva, 588 p.
8. Чекашов В.Н., Корнеев Г.А., Тарасов М.А., Кузнецов А.А. Особенности формирования мелкой структуры эпизоотии чумы в поселениях больших песчанок в связи с понятием парцеллярных группировок у этих грызунов // Проблемы особо опасных инфекций. – 2001. – Вып. 2 (82). – С. 54–61. Chekashov VN, Korneev GA, Tarasov MA, Kuznetsov AA. (2001). Features of the formation of a small structure of plague epizootic in great gerbil settlements in connection with the concept of parcellular groupings in these rodents [Osobennosti formirovaniya melkoy struktury epizootii chumy v poseleniyakh bol’shikh peschanok v svyazi s ponyatiem partsellyarnykh gruppirovok u etikh gryzunov]. Problemy osobo opasnykh infektsiy, 2 (82), 54-61.
Review
For citations:
Sutyagin V.V. GENETIC DRIFT AND GENE FLOW IN POPULATIONS OF THE GREAT GERBILS. Acta Biomedica Scientifica. 2018;3(4):147-151. (In Russ.) https://doi.org/10.29413/ABS.2018-3.4.22
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