14 research outputs found
Evaluation of abundance of residents and immigration by irretrievable requisitioning of the bank vole (Myodes glareolus Schreber, 1780)
Spatial Population Genetic Structuring of the Common Shrew Sorex araneus (Lipotyphla, Mammalia): Variability of Microsatellite Markers
Factors influencing dominance structure of common rodent species in Vietnamese tropical forests
Morphometric distances and population structuring in the common shrew Sorex araneus L. (Lipotyphla: Soricidae)
Migrations of Rodents in the Zone of Local Radioactive Contamination at Different Phases of Population Dynamics and Their Consequences
Chromosomal rearrangements do not seem to affect the gene flow in hybrid zones between karyotypic races of the common shrew (Sorex araneus).
Chromosomal rearrangements are proposed to promote genetic differentiation between chromosomally differentiated taxa and therefore promote speciation. Due to their remarkable karyotypic polymorphism, the shrews of the Sorex araneus group were used to investigate the impact of chromosomal rearrangements on gene flow. Five intraspecific chromosomal hybrid zones characterized by different levels of karyotypic complexity were studied using 16 microsatellites markers. We observed low levels of genetic differentiation even in the hybrid zones with the highest karyotypic complexity. No evidence of restricted gene flow between differently rearranged chromosomes was observed. Contrary to what was observed at the interspecific level, the effect of chromosomal rearrangements on gene flow was undetectable within the S. araneus species