TY  - BOOK
AU  - Brandt, Alexander
AU  - Lavanchy, Guillaume
AU  - Mérel, Vincent
AU  - Soldini, Luca
AU  - Massy, Morgane
AU  - Dumas, Zoé
AU  - Gaudichau, Emelyne
AU  - Labédan, Marjorie
AU  - Pasquier Genoud, Falon
AU  - Bastardot, Marc
AU  - Schwander, Tanja
PY  - 2026
DA  - 2026//
TI  - Hybridogenesis as an intermediate step between sexual reproduction and parthenogenesis in stick insects
T3  - Proceedings of the National Academy of Sciences (PNAS)
ET  - [accepted author manuscript]
PB  - 2026
CY  - No place, unknown, or undetermined; Rostock
AB  - Many organisms reproduce through non-canonical modes such as parthenogenesis or hybridogenesis (clonal transmission of one parent’s chromosomes), but whether these arise abruptly or stepwise from each other remains unclear. We address this in the stick-insect genus Bacillus , which harbors several hybrid lineages with diverse reproductive modes. From haplotype-resolved phylogenies of >500 wild-caught individuals, we infer a single, recent (~8,000 years) origin of all hybrids. The ancestral hybrid reproduced via hybridogenesis, which subsequently diversified into parthenogenesis and, twice independently, into triploid lineages. Laboratory crosses recapitulate this trajectory, where each step facilitated the next. These findings reveal how a single genomic perturbation can act as a catalyst for evolutionary innovation, turning the loss of sex into a driver of diversification rather than a dead end.<eng>
SN  - 1091-6490
UR  - https://purl.uni-rostock.de/rosdok/id00005578
UR  - https://doi.org/10.18453/rosdok_id00005578
DO  - 10.18453/rosdok_id00005578
LA  - English
N1  - Alexander Brandt, Guillaume Lavanchy, Vincent Mérel, Luca Soldini, Morgane Massy, Zoé Dumas, Emelyne Gaudichau, Marjorie Labédan, Falon Pasquier Genoud, Marc Bastardot, Tanja Schwander
ID  - 197254747X
ER  -