Mixed-sex offspring produced via cryptic parthenogenesis in a lizard

0536358 - ÚŽFG 2021 RIV GB eng J - Journal Article
Kratochvíl, L. - Vukič, J. - Červenka, J. - Kubička, L. - Johnson Pokorná, Martina - Kukačková, D. - Rovatsos, M. - Piálek, L.
Mixed-sex offspring produced via cryptic parthenogenesis in a lizard.
Molecular Ecology. Roč. 29, č. 21 (2020), s. 4118-4127. ISSN 0962-1083. E-ISSN 1365-294X
Institutional support: RVO:67985904
Keywords : ddRAD sequencing * facultative parthenogenesis * reproduction
OECD category: Zoology
Impact factor: 6.185, year: 2020
Method of publishing: Limited access
https://asep.lib.cas.cz/arl-cav/cs/csg/?repo=crepo1&key=22651922908

Facultative parthenogenesis in vertebrates is believed to be exceptional, and wherever documented, it always led to single-sex progeny with genome-wide homozygosity. We report the first challenge to this paradigm: frequent facultative parthenogenesis in the previously assumed sexually reproducing tropical night lizardLepidophyma smithiiresults in offspring of both sexes and preserves heterozygosity in many loci polymorphic in their mothers. Moreover, we documented a mixture of sexually and parthenogenetically produced progeny in a single clutch, which documents how cryptic a facultative parthenogenesis can be. Next, we show that in the studied species, 1) parthenogenetically produced females can further reproduce parthenogenetically, 2) a sexually produced female can reproduce parthenogenetically, 3) a parthenogenetically produced female can reproduce sexually, and 4) a parthenogenetically produced male is fully fertile. We suggest that facultative parthenogenesis should be considered even in vertebrates with frequent males and genetically variable, heterozygous offspring.
Permanent Link: http://hdl.handle.net/11104/0314137