Natural hybridization and limited introgression between the crested newts Triturus cristatus and T. dobrogicus (Caudata Salamandridae) in Slovakia

0023198 - ÚBO 2006 RIV SK eng J - Journal Article
Mikulíček, Peter - Kautman, J. - Zavadil, V. - Piálek, Jaroslav
Natural hybridization and limited introgression between the crested newts Triturus cristatus and T. dobrogicus (Caudata Salamandridae) in Slovakia.
[Přírodní hybridizace a limitovaná introgrese mezi čolky Triturus cristatus a T. dobrogicus (Caudata Salamandridae) na Slovensku.]
Biologia. Roč. 59, Suppl. 15 (2004), s. 211-218. ISSN 0006-3088. E-ISSN 1336-9563
R&D Projects: GA ČR(CZ) GA206/98/0115; GA ČR(CZ) GA206/01/0695
Institutional research plan: CEZ:AV0Z6093917
Keywords : hybrid zones * Triturus cristatus * Triturus cristatus
Subject RIV: EB - Genetics ; Molecular Biology
Impact factor: 0.207, year: 2004

We recorded natural hybridization and limited bidirectional introgression of nuclear markers between the newts Triturus cristatus and Triturus dobrogicus in Slovakia using sixteen species-specific RAPD markers. Hybrid index scores divided individuals into two categories, genetically similar to either one or the other parental species. Specimens with intermediate hybrid index scores were not detected. The hybrid individuals observed in this study were classified as backcross hybrids. The occurrence of genetically well differentiated populations at a distance of ca. 11 km indicates that the hybrid zone between the taxa is narrow. The limited gene flow between the species is caused by their marked ecological differentiation. We presume that hybrid zones between T. cristatus and T. dobrogicus may have formed in all transitional lowland versus hilly regions, such as in the foothills of the Carpathian Mts.

Zaznamenali jsme přírodní hybridizaci a limitovanou introgresi mezi čolky Triturus cristatus a T. dobrogicus (Caudata Salamandridae) na Slovensku.
Permanent Link: http://hdl.handle.net/11104/0111863