Two water frog populations from western Slovakia consisting of diploid females and diploid and triploid males of the hybridogenetic hybrid Rana esculenta (Anura, Ranidae)
✍ Scribed by Peter Mikulíček; Petr Kotlík
- Publisher
- Pensoft Publishers
- Year
- 2008
- Tongue
- English
- Weight
- 621 KB
- Volume
- 77
- Category
- Article
- ISSN
- 0232-5519
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✦ Synopsis
We investigated the genomic constitution and the reproduction mode of Rana esculenta from two pure hybrid populations found in western Slovakia, using cytomorphological, karyological and allozyme electrophoretic methods. Both populations were composed of diploid R. esciilenta females and diploid and triploid R. esculenta males. A single subadult R. ridibitnda
female was caught at one of the localities. The females significantly outnumbered the males in both populations. All electrophoretically investigated triploid R. esciilenta males possessed the allopolyploid genomic constitution RLL (one "ridihirnrki" and two "lessonae" genomes). In the ovariesitestes of diploid femalesimales, exclusively allelic products characteristic of R. ridihundu were detected, suggesting that they hybridogenetically produced gametes carrying a "ridihunrfu " genome. On the contrary, the electrophoresis revealed only allelic products characteristic of Rana lessonae in the testes of triploid RLL males from one of the populations. Thus, these males apparently substitutc genetically the host species R. lessonae and play the important role in perpetuation of the investigated population.