scholarly journals Genome‐wide admixture and ecological niche modelling reveal the maintenance of species boundaries despite long history of interspecific gene flow

2014 ◽  
Vol 23 (8) ◽  
pp. 2046-2059 ◽  
Author(s):  
Amanda R. De La Torre ◽  
David R. Roberts ◽  
Sally N. Aitken
Keyword(s):  
Gene Flow ◽  
Ecological Niche ◽  
Ecological Niche Modelling ◽  
Species Boundaries ◽  
Niche Modelling ◽  
Interspecific Gene Flow ◽  
Genome Wide ◽  
History Of

Phylogeography and ecological niche modelling, coupled with the fossil pollen record, unravel the demographic history of a Neotropical swamp palm through the Quaternary

2014 ◽  
Vol 41 (4) ◽  
pp. 673-686 ◽  
Author(s):  
Natácia Evangelista de Lima ◽  
Matheus S. Lima-Ribeiro ◽  
Carla Faleiro Tinoco ◽  
Levi Carina Terribile ◽  
Rosane G. Collevatti
Keyword(s):  
Ecological Niche ◽  
Demographic History ◽  
Ecological Niche Modelling ◽  
Fossil Pollen ◽  
Pollen Record ◽  
Niche Modelling ◽  
History Of

scholarly journals Genomic signals of admixture and reinforcement between two closely related species of European sepsid flies

2020 ◽  
Author(s):  
Athene Giesen ◽  
Wolf U. Blanckenhorn ◽  
Martin A. Schäfer ◽  
Kentaro K. Shimizu ◽  
Rie Shimizu-Inatsugi ◽  
...  
Keyword(s):  
Gene Flow ◽  
Dna Sequence ◽  
Species Boundaries ◽  
Adaptive Divergence ◽  
Sympatric Populations ◽  
Interspecific Gene Flow ◽  
Natural Systems ◽  
Sequence Identity ◽  
Interspecific Differences ◽  
Genome Wide

ABSTRACTInterspecific gene flow by hybridization may weaken species barriers and adaptive divergence, but can also initiate reinforcement of reproductive isolation trough natural and sexual selection. The extent of interspecific gene flow and its consequences for the initiation and maintenance of species barriers in natural systems remain poorly understood, however. To assess genome-wide patterns of gene flow between the two closely related European dung fly species Sepsis cynipsea and Sepsis neocynipsea (Diptera: Sepsidae), we tested for historical gene flow with the aid of ABBA-BABA test using whole-genome resequencing data from pooled DNA of male specimens originating from natural and laboratory populations. We contrasted genome-wide variation in DNA sequence differences between samples from sympatric populations of the two species in France and Switzerland with that of interspecific differences between pairs of samples involving allopatric populations from Estonia and Italy. In the French Cevennes, we detected a relative excess of DNA sequence identity, suggesting interspecific gene flow in sympatry. In contrast, at two sites in Switzerland, we observed a relative depletion of DNA sequence identity compatible with reinforcement of species boundaries in sympatry. Our results suggest that the species boundaries between S. cynipsea and S. neocynipsea in Europe depend on the eco-geographic context.

scholarly journals Genomic signals of admixture and reinforcement between two closely related species of European sepsid flies

2021 ◽  
Author(s):  
Athene Giesen ◽  
Wolf Blanckenhorn ◽  
Martin Schäfer ◽  
Kentaro K. Shimizu ◽  
Rie Shimizu-Inatsugi ◽  
...  
Keyword(s):  
Gene Flow ◽  
Dna Sequence ◽  
Species Boundaries ◽  
Adaptive Divergence ◽  
Sympatric Populations ◽  
Interspecific Gene Flow ◽  
Natural Systems ◽  
Sequence Identity ◽  
Interspecific Differences ◽  
Genome Wide

Interspecific gene flow by hybridization may weaken species barriers and adaptive divergence, but can also initiate reinforcement of reproductive isolation trough natural and sexual selection. The extent of interspecific gene flow and its consequences for the initiation and maintenance of species barriers in natural systems remain poorly understood, however. To assess genome-wide patterns of gene flow between the two closely related European dung fly species Sepsis cynipsea and Sepsis neocynipsea (Diptera: Sepsidae), we tested for historical gene flow with the aid of ABBA-BABA test using whole-genome resequencing data from pooled DNA of male specimens originating from natural and laboratory populations. We contrasted genome-wide variation in DNA sequence differences between samples from sympatric populations of the two species in France and Switzerland with that of interspecific differences between pairs of samples involving allopatric populations from Estonia and Italy. In the French Cevennes, we detected a relative excess of DNA sequence identity, suggesting interspecific gene flow in sympatry. In contrast, at two sites in Switzerland, we observed a relative depletion of DNA sequence identity compatible with reinforcement of species boundaries in sympatry. Our results suggest that the species boundaries between S. cynipsea and S. neocynipsea in Europe depend on the eco-geographic context.

Sign in / Sign up

Export Citation Format

Share Document