Genomic, Phenotypic and Environmental Correlates of Speciation in the Midwife Toads (Alytes) DOI Creative Commons
Johanna Ambu, Spartak N. Litvinchuk, Carlos Caballero‐Díaz

et al.

Molecular Ecology, Journal Year: 2025, Volume and Issue: unknown

Published: March 25, 2025

Speciation, i.e., the formation of new species, implies that diverging populations evolve genetic, phenotypic or ecological factors promote reproductive isolation (RI), but relative contributions these remain elusive. Here we test which genomic, bioacoustic, morphological, and environmental differences best predicts RI across a continuum divergence in midwife toads (genus Alytes), group Western Mediterranean amphibians, using total evidence approach. We found that, without strong geographic barriers to dispersal, extent introgression hybrid zones between phylogeographic lineages, should reflect strength RI, predominantly covaries with genomic divergence. Overall differentiation becomes substantial only well established, fully isolated species. These results suggest speciation initially involve cryptic probably through intrinsic (genetic) incompatibilities. As they continue diverge, nascent species eventually differentiate externally, potentially enforces pre-mating facilitates sympatry. This scenario has practical implications for delimitation, notably when thresholds as proxies isolation.

Language: Английский

Genome-wide patterns of diversity in the European midwife toad complex: phylogeographic and conservation prospects DOI Creative Commons
Johanna Ambu, Carlos Caballero‐Díaz, Gregorio Sánchez‐Montes

et al.

Conservation Genetics, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 6, 2025

Language: Английский

Citations

0
Genomic, Phenotypic and Environmental Correlates of Speciation in the Midwife Toads (Alytes) DOI Creative Commons
Johanna Ambu, Spartak N. Litvinchuk, Carlos Caballero‐Díaz

et al.

Molecular Ecology, Journal Year: 2025, Volume and Issue: unknown

Published: March 25, 2025

Speciation, i.e., the formation of new species, implies that diverging populations evolve genetic, phenotypic or ecological factors promote reproductive isolation (RI), but relative contributions these remain elusive. Here we test which genomic, bioacoustic, morphological, and environmental differences best predicts RI across a continuum divergence in midwife toads (genus Alytes), group Western Mediterranean amphibians, using total evidence approach. We found that, without strong geographic barriers to dispersal, extent introgression hybrid zones between phylogeographic lineages, should reflect strength RI, predominantly covaries with genomic divergence. Overall differentiation becomes substantial only well established, fully isolated species. These results suggest speciation initially involve cryptic probably through intrinsic (genetic) incompatibilities. As they continue diverge, nascent species eventually differentiate externally, potentially enforces pre-mating facilitates sympatry. This scenario has practical implications for delimitation, notably when thresholds as proxies isolation.

Language: Английский

Citations

0