Autor: Ratkiewicz, Mirosław - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Od genetyki do genomiki populacji: nowe perspektywy badań w ekologii i biologii ewolucyjnej
From population genetics to population genomics: new perspectives in ecology and evolutionary biology
Autorzy:: Ratkiewicz, Mirosław
Powiązania:: https://bibliotekanauki.pl/articles/1197954.pdf
Data publikacji:: 2006
Wydawca:: Polskie Towarzystwo Przyrodników im. Kopernika
Opis:: Application of molecular methods in biology has revolutionized ecology, population genetics and evolutionary biology. For example, the molecular studies revealed complex mating systems and social structures. Analysis of molecular markers revealed the existence of cryptic boundaries such as secondary contact (hybrid zones) among previously isolated populations. Most recently, due to simultaneous study of numerous loci (the population genomics approach), the distribution of estimates of genetic differentiation (Fst) from individual loci has allowed the identification of candidate loci to be under selection. Such analyses may help answer many important evolutionary questions and will also improve inferences in classical population genetics dealing with demography and evolutionary history. Several papers concerning interesting aspects of population genetics and molecular ecology revealed by Polish scientists are discussed and future perspective for population genomics approach are highlighted.
Źródło:: Kosmos; 2006, 55, 1; 129-136
0023-4249
Pojawia się w:: Kosmos
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Wpływ barier genetycznych i środowiskowych oraz czynników historycznych na przepływ genów i strukturę populacji u zwierząt
Historical events, genetic and environmental barriers - their impact on gene flow and population structure in animals
Autorzy:: Ratkiewicz, Mirosław
Powiązania:: https://bibliotekanauki.pl/articles/1198559.pdf
Data publikacji:: 2006
Wydawca:: Polskie Towarzystwo Przyrodników im. Kopernika
Opis:: In many species genetic distances increase with geographic distances, resulting in the “isolation by distance” (IBD) pattern. However, more complex patterns usually are observed in heterogeneous habitats. Geographic obstacles limit gene flow in a discontinuous way and might confound a simple IBD relationship. Moreover, current population structure is not only determined by present-day evolutionary processes but also shaped by population history. Barriers to gene flow lead to differences in gene pool composition among populations, so that molecular population genetics methods should allow these barriers to be detected. It is also possible to identify cryptic boundaries, which may represent secondary contacts among previously isolated populations. Landscape genetics approach that combines molecular population genetics and landscape ecology aims to detect such genetic discontinuities and to correlate them with environmental features. In this paper, the effects of genetic and environmental factors that affect population genetic structure and population history, are explored with a focus on the following examples: (1) the common vole populations in heterogeneous habitats of the Biebrza valley in NE Poland; (2) red deer populations in France that experienced isolation and translocations; (3) different chromosome races of the common shrew in Poland forming hybrid zones and (4) two sympatric subspecies of the chequered skipper in the Białowieża Primeval Forest, NE Poland. Implications of such approaches for evolutionary biology, ecology and conservation biology are discussed in the context of most recent achievements in the field.
Źródło:: Kosmos; 2006, 55, 2-3; 165-176
0023-4249
Pojawia się w:: Kosmos
Dostawca treści:: Biblioteka Nauki

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