New Phylogenetic and Phylogeography Insights and Molecular and Morphology Adaptive Evolution in Animals

A special issue of Genes (ISSN 2073-4425). This special issue belongs to the section "Animal Genetics and Genomics".

Deadline for manuscript submissions: closed (10 July 2024) | Viewed by 997

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Laboratory of Molecular Population Genetics and Evolutionary Biology, Department of Biology, Faculty of Science, Pontificia Universidad Javeriana, Cra 7A No 43-82, Bogotá, Colombia
Interests: chromosomes; evolution; genomics; mammals; molecular ecology; molecular markers; phylogenetics; phylogeography
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Special Issue Information

Dear Colleagues,

Two essential aspects of biological evolution are the emergence of new species, or taxa, and the morphological and molecular adaptation of these taxa to the environment in which they live. Although from a macro-evolutionary perspective (punctuated equilibria and cladistics), both phenomena may be decoupled, from Darwin, through many population geneticists, both phenomena (macro and micro-evolution) may consider that they are intimately related. In this Special Issue, we invite studies with new phylogenetic and phylogeographic results in animals that can be correlated positively (Darwinian selection) or negatively (neutral evolution) with molecular or morphological adaptative traits in these same species, either being wild or domestic ones. Examples of positive (Darwinian) selection at the molecular level or in the phylogeographic distribution of a given species (or between different highly related species) are welcome.

Dr. Manuel Ruiz-Garcia
Guest Editor

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Keywords

  • adaptation
  • DNA
  • genetics
  • mitochondrial genomes
  • morphology evolution
  • natural selection
  • neutral evolution
  • nuclear genomes
  • phylogenetics
  • phylogeography

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Published Papers (1 paper)

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Research

46 pages, 4657 KiB  
Article
Are There Barriers Separating the Pink River Dolphin Populations (Inia boliviensis, Iniidae, Cetacea) within the Mamoré–Iténez River Basins (Bolivia)? An Analysis of Its Genetic Structure by Means of Mitochondrial and Nuclear DNA Markers
by Manuel Ruiz-García, Pablo Escobar-Armel, María Martínez-Agüero, Magda Gaviria, Diana Álvarez, Myreya Pinedo and Joseph Mark Shostell
Genes 2024, 15(8), 1012; https://doi.org/10.3390/genes15081012 - 1 Aug 2024
Viewed by 771
Abstract
The pink river dolphin, or bufeo, is one of the dolphins which lives in the rivers of the Orinoco and Amazon basins in South America. The Bolivian bufeo population is considered a differentiated species (Inia boliviensis) from the Amazon and Orinoco [...] Read more.
The pink river dolphin, or bufeo, is one of the dolphins which lives in the rivers of the Orinoco and Amazon basins in South America. The Bolivian bufeo population is considered a differentiated species (Inia boliviensis) from the Amazon and Orinoco species (Inia geoffrensis). Until now, no study has completed an extensive population genetics analysis of the bufeo in Bolivian rivers. We analyzed 82 bufeos from different rivers from the Mamoré and Iténez (Guaporé) river basins for the mt control region (CR), nuclear microsatellites, and DQB-1 gene sequences to determine if the inner rapids of these Bolivian river basins have some influence on the genetic structure of this species. The first relevant result was that the genetic diversity for CR, and the microsatellites were substantially lower in the Bolivian bufeos than in the dolphins studied in other areas of the Amazon and Orinoco. However, the DQB-1 gene sequences yielded similar genetic diversity to those found in other areas. The second relevant result is the existence of some significant genetic heterogeneity among the bufeo populations within Bolivia, although in a small degree, but this differentiation is independent of the inner rapids of the Bolivian rivers we sampled. The third relevant result was the existence of significant isolation by distance for the CR, but not for microsatellites and DQB-1 gene sequences. This was related to differential gene flow capacity of females (philopatric) and males (less philopatric and more migrants) and, possibly, to different selective patterns affecting the molecular markers studied. The fourth relevant result was related to diverse demographic changes of these bufeos. At least two or three bottleneck events and one or two population expansions have occurred in the Bolivian bufeo population. The major part of these events occurred during the Pleistocene. Full article
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