Reproduction Characteristics and Crow's Index in Different Groups of Yevpatoria Population

Atramentova, L. A.; Meshcheryakova, I. P.; Філіпцова, О. В.

doi:10.7868/s0016675813110039

Cited by 2 publications

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“…Information about them can be used for demographic and medical predictions. This is especially true for ethnically heterogeneous popula tions, because population genetic indicators can vary significantly in some groups [27,28] and it is not always possible to predict the consequences of their dynamics [29,30,31].…”

Section: Resultsmentioning

confidence: 99%

Characteristics of migration in the population of Yevpatoria (Crimea)

2014

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Indicators characterizing population migration were calculated according to the marriage records of Yevpatoria (Crimea) of 1960/1961, 1985, and 1994/1995. The marital migration coefficient m in those years was 0.80, 0.75, and 0.66, the endogamy index was 0.04, 0.08, and 0.15, and the rate of marriage contin gency by birthplace was 0.15, 0.16, and 0.19, respectively. The highest values of the positive mating assortative index were recorded for people from the Caucasus, Central, Central Black Earth Oblast, and Northwest regions of Russia in 1960/1961 and for migrants from Moldavia, the republics of Central Asia and Caucasus, Western Siberia, and Ukraine in 1985. In 1994/1995, natives of Yevpatoria were also included in this group. The average distance of migration by year was 909, 1280, and 1314 km, and the marital distance was 960, 1397, and 1171 km. The "radius" of the Yevpatoria population, in accordance with the Maleco model in the years under study, was 98, 134, and 137 km. The distance isolation indicator b was decreasing and amounted to 0.00049, 0.00043, and 0.00038. In the migration flow in all of the periods, the majority of immigrants came from different regions of Ukraine outside Crimea (27-31%), followed by natives of various places in Crimea (21-24%), Central (3.6-8.5%), and Central Black Earth (1.8-6.1%) regions of Russia, and the South Cau casus (4.0-5.7%). The proportion of Russians and Jews decreased in the migration flow, while the proportion of Ukrainians and representatives of non Slavic nationalities increased.

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Section: Resultsmentioning

confidence: 99%

Characteristics of migration in the population of Yevpatoria (Crimea)

2014

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“…General significant statistics were calculated, natural selection indexes were calculated according to J. Crow (1954) (cited from [7]). Also, migration rate, marital distance, parent-offspring distance have been calculated.…”

Section: Methodsmentioning

confidence: 99%

“…The vital characteristics of a population make it possible to estimate the pressure of natural selection, with the weakening of which the genetic load increases. According to [7], [10], [11], [15] in Ukrainian populations, the intensity of natural selection weakens from generation to generation, as in other developed countries with a low mortality rate [16], [17]. The Crow's index in Lutsk population decreased from 0.26 in the first generation to 0.20 in the second (Table III).…”

Section: A Reproductive Characteristics and Selection Index In Two Generationsmentioning

confidence: 99%

Indexes of Natural Selection, Migration and Reproductive Characteristics in Lutsk Population, West Ukraine

Kozak

Atramentova

2021

EJDEVELOP

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In human populations natural selection is shifting to the side of prenatal development and appears as negative outcomes of pregnancies such as spontaneous abortions, ectopic pregnancies and stillbirths. Therefore, it is important to study dynamics of changes in reproductive characteristics and selection indexes of the populations in order to predict possible problems and numbers of genetic burden in the populations. Ukraine is poorly studied in this area. The aim of the study was to investigate indicators which characterize the population structure of Lutsk city, the intensity of natural selection, migration and their dynamics in two generations. 583 post-reproductive age females were anonymously questioned. Age, places of birth of the couple, the number of pregnancies and their outcomes were considered. Results show that natural selection indexes (Crow’s indexes) are decreasing from the first generation (0,26) to the second (0,20). Migration coefficients in the population of Lutsk decreased from 0.89 to 0.82 per generation and show intensive urbanization of the city for the studied time. The efficiency of the migration is low, since the biggest number of migrants come from the villages of the Volyn region (45% for first generations and 64% for the second one), or adjacent regions of Ukraine (35% and 27%, respectively). The population of Lutsk has a narrowed type of reproduction, where average number of offspring per female equal 1,86 for the first generation and 1,73 for the second generation.

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Reproduction Characteristics and Crow's Index in Different Groups of Yevpatoria Population

Cited by 2 publications

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Characteristics of migration in the population of Yevpatoria (Crimea)

Characteristics of migration in the population of Yevpatoria (Crimea)

Indexes of Natural Selection, Migration and Reproductive Characteristics in Lutsk Population, West Ukraine

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