The Genetic Differentiation of Pyrrhulina (Teleostei, Characiformes) Species is Likely Influenced by Both Geographical Distribution and Chromosomal Rearrangements
Allopatry is generally considered to be one of the main contributors to the remarkable Neotropical biodiversity. However, the role of chromosomal rearrangements including neo-sex chromosomes for genetic diversity is still poorly investigated and understood. Here, we assess the genetic divergence in...
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Published in | Frontiers in genetics Vol. 13; p. 869073 |
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Main Authors | , , , , , , , , , , |
Format | Journal Article |
Language | English |
Published |
Switzerland
Frontiers Media S.A
04.05.2022
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Subjects | |
Online Access | Get full text |
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Summary: | Allopatry is generally considered to be one of the main contributors to the remarkable Neotropical biodiversity. However, the role of chromosomal rearrangements including neo-sex chromosomes for genetic diversity is still poorly investigated and understood. Here, we assess the genetic divergence in five
species using population genomics and combined the results with previously obtained cytogenetic data, highlighting that molecular genetic diversity is consistent with their chromosomal features. The results of a principal coordinate analysis (PCoA) indicated a clear difference among all species while showing a closer relationship of the ones located in the same geographical region. This was also observed in genetic structure analyses that only grouped
and
, which were also recovered as sister species in a species tree analysis. We observed a contradictory result for the relationships among the three species from the Amazon basin, as the phylogenetic tree suggested
and
as sister species, while the PCoA showed a high genetic difference between
and all other species. These results suggest a potential role of sex-related chromosomal rearrangements as reproductive barriers between these species. |
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Bibliography: | ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 Edited by: Pável Matos-Maraví, Academy of Sciences of the Czech Republic (ASCR), Czechia Luis Rodrigues, Federal University of Western Pará, Brazil Reviewed by: Zdeněk Lajbner, Academy of Sciences of the Czech Republic (ASCR), Czechia This article was submitted to Evolutionary and Population Genetics, a section of the journal Frontiers in Genetics Jorge Luis Ramirez, National University of San Marcos, Peru |
ISSN: | 1664-8021 1664-8021 |
DOI: | 10.3389/fgene.2022.869073 |