Genomic and bioacoustic variation in a midwife toad hybrid zone: A role for reinforcement? DOI Creative Commons
Johanna Ambu, Christophe Dufresnes

PLoS ONE, Journal Year: 2024, Volume and Issue: 19(11), P. e0314477 - e0314477

Published: Nov. 25, 2024

Hybrid zones, i.e., geographic areas where diverging lineages meet, hybridize and eventually mix their genomes, offer opportunities to understand the mechanisms behind reproductive isolation speciation. zones are particularly well suited study reinforcement, process by which selection against hybridization increases barriers, which, in anuran amphibians, is typically expressed increased divergence advertisement calls–the main cue assortative mating–in parapatric ranges. Using mitochondrial barcoding (16S sequences), population genomics (thousands of SNPs) bioacoustic analyses (four call parameters), we examine hybrid zone between two incipient species midwife toads ( Alytes obstetricans A . almogavarii ) southern France, with purposes locating transition, measuring genetic introgression, documenting potential signatures reinforcement. We map range boundaries Eastern Pyrenees southwestern foothills Massif Central, namely along Ariège valley Montagne Noire area. Similarly another transition these Spain, found be narrow, involving geographically restricted gene flow (~20 km wide allele frequency clines) barrier loci (i.e., resisting introgression), both suggestive partial post-zygotic (hybrid incompatibilities). The calls overlap less inside than outside zone, due a reduction standing variation rather shift towards distinctive variants. While neutral causes cannot excluded, this pattern follows general expectations yet without character displacement. Our highlights amphibian assess behavioral drivers statu nascendi under various evolutionary contexts.

Language: Английский

Multiple‐Level Variation of Advertisement Calls of Microhyla fissipes Across Hainan Island DOI Creative Commons

Yujuan Guo,

Tianyu Qian, Yulong Li

et al.

Ecology and Evolution, Journal Year: 2025, Volume and Issue: 15(5)

Published: May 1, 2025

ABSTRACT Vocalization is an important feature in anuran identification that could vary among individuals and populations. We present investigation of multiple‐level variation on advertisement calls Microhyla fissipes from nine populations across Hainan Island further test the differences between two geographical groups were divided by morphological features a previous study. found dominant frequency most static call parameter at individual level. Four six parameters show significant be useful for groups. The southwest (SW) group represents highest all reported M. literature, implying need studies.

Language: Английский

Citations

0
Urbanisation Affects Millipede Gut Microbiota Communities by Impeding Host Gene Flow DOI
Hongyi Liu, Tangjun Xu,

Wentao Ye

et al.

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

Published: May 9, 2025

ABSTRACT Urbanisation leads to the alteration of living environment soil fauna and isolates them, significantly influencing evolutionary processes fauna. Faunal gut microbiota serves bridge hosts with changing environments; thus, they are viable indicators host adaptation. For this study, we investigated how urbanisation affects population genetics Spirobolus bungii . The results revealed that did not affect genetic diversity S. populations but acted as a barrier, which hindered its gene flow. Genetic differentiation was associated compositional similarity among populations; however, environmental distinctions had no impact. Our findings highlighted flow between critical factor, supported premise influences compositions species. This study contributes deeper understanding mechanisms underlie changes in faunal driven by context urbanisation.

Language: Английский

Citations

0
Genomic and bioacoustic variation in a midwife toad hybrid zone: A role for reinforcement? DOI Creative Commons
Johanna Ambu, Christophe Dufresnes

PLoS ONE, Journal Year: 2024, Volume and Issue: 19(11), P. e0314477 - e0314477

Published: Nov. 25, 2024

Hybrid zones, i.e., geographic areas where diverging lineages meet, hybridize and eventually mix their genomes, offer opportunities to understand the mechanisms behind reproductive isolation speciation. zones are particularly well suited study reinforcement, process by which selection against hybridization increases barriers, which, in anuran amphibians, is typically expressed increased divergence advertisement calls–the main cue assortative mating–in parapatric ranges. Using mitochondrial barcoding (16S sequences), population genomics (thousands of SNPs) bioacoustic analyses (four call parameters), we examine hybrid zone between two incipient species midwife toads ( Alytes obstetricans A . almogavarii ) southern France, with purposes locating transition, measuring genetic introgression, documenting potential signatures reinforcement. We map range boundaries Eastern Pyrenees southwestern foothills Massif Central, namely along Ariège valley Montagne Noire area. Similarly another transition these Spain, found be narrow, involving geographically restricted gene flow (~20 km wide allele frequency clines) barrier loci (i.e., resisting introgression), both suggestive partial post-zygotic (hybrid incompatibilities). The calls overlap less inside than outside zone, due a reduction standing variation rather shift towards distinctive variants. While neutral causes cannot excluded, this pattern follows general expectations yet without character displacement. Our highlights amphibian assess behavioral drivers statu nascendi under various evolutionary contexts.

Language: Английский

Citations

2