Fish conservation in the land of steppe and sky: Evolutionarily significant units of threatened salmonid species in Mongolia mirror major river basins
Abstract Mongolia's salmonids are suffering extensive population declines; thus, more comprehensive fisheries management and conservation strategies are required. To assist with their development, a better understanding of the genetic structure and diversity of these threatened species would al...
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crwiley:10.1002/ece3.4974 2024-09-15T18:10:58+00:00 Fish conservation in the land of steppe and sky: Evolutionarily significant units of threatened salmonid species in Mongolia mirror major river basins Kaus, Andrew Michalski, Stefan Hänfling, Bernd Karthe, Daniel Borchardt, Dietrich Durka, Walter Bundesministerium für Bildung und Forschung 2019 http://dx.doi.org/10.1002/ece3.4974 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fece3.4974 https://onlinelibrary.wiley.com/doi/pdf/10.1002/ece3.4974 https://onlinelibrary.wiley.com/doi/full-xml/10.1002/ece3.4974 en eng Wiley http://creativecommons.org/licenses/by/4.0/ Ecology and Evolution volume 9, issue 6, page 3416-3433 ISSN 2045-7758 2045-7758 journal-article 2019 crwiley https://doi.org/10.1002/ece3.4974 2024-06-27T04:21:41Z Abstract Mongolia's salmonids are suffering extensive population declines; thus, more comprehensive fisheries management and conservation strategies are required. To assist with their development, a better understanding of the genetic structure and diversity of these threatened species would allow a more targeted approach for preserving genetic variation and ultimately improve long‐term species recoveries. It is hypothesized that the unfragmented river basins that have persisted across Mongolia provide unobstructed connectivity for resident salmonid species. Thus, genetic structure is expected to be primarily segregated between major river basins. We tested this hypothesis by investigating the population structure for three salmonid genera ( Hucho, Brachymystax and Thymallus ) using different genetic markers to identify evolutionarily significant units (ESUs) and priority rivers to focus conservation efforts. Fish were assigned to separate ESUs when the combined evidence of mitochondrial and nuclear data indicated genetic isolation. Hucho taimen exhibited a dichotomous population structure forming two ESUs, with five priority rivers. Within the Brachymystax genus, there were three B. lenok ESUs and one B . tumensis ESU, along with six priority rivers. While B . tumensis was confirmed to display divergent mtDNA haplotypes, haplotype sharing between these two congeneric species was also identified. For T. baicalensis, only a single ESU was assigned, with five priority rivers identified plus Lake Hovsgol. Additionally, we confirmed that T. nigrescens from Lake Hovsgol is a synonym of T. baicalensis . Across all species, the most prominent pattern was strong differentiation among major river basins with low differentiation and weak patterns of isolation by distance within river basins, which corroborated our hypothesis of high within‐basin connectivity across Mongolia. This new genetic information provides authorities the opportunity to distribute resources for management between ESUs while assigning additional ... Article in Journal/Newspaper Hucho taimen Wiley Online Library Ecology and Evolution 9 6 3416 3433 |
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Wiley Online Library |
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crwiley |
language |
English |
description |
Abstract Mongolia's salmonids are suffering extensive population declines; thus, more comprehensive fisheries management and conservation strategies are required. To assist with their development, a better understanding of the genetic structure and diversity of these threatened species would allow a more targeted approach for preserving genetic variation and ultimately improve long‐term species recoveries. It is hypothesized that the unfragmented river basins that have persisted across Mongolia provide unobstructed connectivity for resident salmonid species. Thus, genetic structure is expected to be primarily segregated between major river basins. We tested this hypothesis by investigating the population structure for three salmonid genera ( Hucho, Brachymystax and Thymallus ) using different genetic markers to identify evolutionarily significant units (ESUs) and priority rivers to focus conservation efforts. Fish were assigned to separate ESUs when the combined evidence of mitochondrial and nuclear data indicated genetic isolation. Hucho taimen exhibited a dichotomous population structure forming two ESUs, with five priority rivers. Within the Brachymystax genus, there were three B. lenok ESUs and one B . tumensis ESU, along with six priority rivers. While B . tumensis was confirmed to display divergent mtDNA haplotypes, haplotype sharing between these two congeneric species was also identified. For T. baicalensis, only a single ESU was assigned, with five priority rivers identified plus Lake Hovsgol. Additionally, we confirmed that T. nigrescens from Lake Hovsgol is a synonym of T. baicalensis . Across all species, the most prominent pattern was strong differentiation among major river basins with low differentiation and weak patterns of isolation by distance within river basins, which corroborated our hypothesis of high within‐basin connectivity across Mongolia. This new genetic information provides authorities the opportunity to distribute resources for management between ESUs while assigning additional ... |
author2 |
Bundesministerium für Bildung und Forschung |
format |
Article in Journal/Newspaper |
author |
Kaus, Andrew Michalski, Stefan Hänfling, Bernd Karthe, Daniel Borchardt, Dietrich Durka, Walter |
spellingShingle |
Kaus, Andrew Michalski, Stefan Hänfling, Bernd Karthe, Daniel Borchardt, Dietrich Durka, Walter Fish conservation in the land of steppe and sky: Evolutionarily significant units of threatened salmonid species in Mongolia mirror major river basins |
author_facet |
Kaus, Andrew Michalski, Stefan Hänfling, Bernd Karthe, Daniel Borchardt, Dietrich Durka, Walter |
author_sort |
Kaus, Andrew |
title |
Fish conservation in the land of steppe and sky: Evolutionarily significant units of threatened salmonid species in Mongolia mirror major river basins |
title_short |
Fish conservation in the land of steppe and sky: Evolutionarily significant units of threatened salmonid species in Mongolia mirror major river basins |
title_full |
Fish conservation in the land of steppe and sky: Evolutionarily significant units of threatened salmonid species in Mongolia mirror major river basins |
title_fullStr |
Fish conservation in the land of steppe and sky: Evolutionarily significant units of threatened salmonid species in Mongolia mirror major river basins |
title_full_unstemmed |
Fish conservation in the land of steppe and sky: Evolutionarily significant units of threatened salmonid species in Mongolia mirror major river basins |
title_sort |
fish conservation in the land of steppe and sky: evolutionarily significant units of threatened salmonid species in mongolia mirror major river basins |
publisher |
Wiley |
publishDate |
2019 |
url |
http://dx.doi.org/10.1002/ece3.4974 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fece3.4974 https://onlinelibrary.wiley.com/doi/pdf/10.1002/ece3.4974 https://onlinelibrary.wiley.com/doi/full-xml/10.1002/ece3.4974 |
genre |
Hucho taimen |
genre_facet |
Hucho taimen |
op_source |
Ecology and Evolution volume 9, issue 6, page 3416-3433 ISSN 2045-7758 2045-7758 |
op_rights |
http://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.1002/ece3.4974 |
container_title |
Ecology and Evolution |
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9 |
container_issue |
6 |
container_start_page |
3416 |
op_container_end_page |
3433 |
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1810448570027868160 |