Publication details
Ovplyvňuje selektívna mortalita mieru introgresie mtDNA v hybridogenetickom komplexe vodných skokanov?
| Title in English | Has selective mortality impact on the rate of mitochondrial DNA introgression in a complex of hybridogenetic water frogs? |
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| Year of publication | 2015 |
| Type | Conference abstract |
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| Citation | |
| Description | Interspecies introgressive hybridization is a process known in plants and animals as well. Besides of introgression of nuclear DNA fragments introgression of the whole mitochondrial genome can sometimes occur, having potential impact on fitness of hybrids. The aim of this work was to find out the rate of mitochondrial DNA (mtDNA) introgression in the complex of water frogs, which include two parental species Pelophylax ridibundus and P. lessonae and their hybridogenetic hybrid P. esculentus. We compared the rate of introgression between larval and adult stages because we expected higher mortality rate of introgressed individuals during metamorphosis. In total 157 adult frogs and 167 larvae (in stages 25 to 41, according to Gossner) were analysed. All P. lessonae individuals carried their own mitogenome. 68,6% of adult hybrinds and 87,0% of hybrids in larval stage carried introgressed lessonae mtDNA. Intorgression of lessonae mtDNA was found in 15,2% Pelophylax ridibundus adults. Larvae of this species were succesfuly captchured only on one locality. Despite we identified higher introgression rate of lessonae mtDNA in P. ridibundus tadpoles than in adults, this result was not statistically significant. The question if selective mortality can influence mtDNA introgression rate remains open. |