Genetic assessment reveals inbreeding, possible hybridization, and low levels of genetic structure in a declining goose population
Abstract The population numbers of taiga bean goose (Anser fabalis fabalis) have halved during recent decades. Since this subspecies is hunted throughout most of its range, the decline is of management concern. Knowledge of the genetic population structure and diversity is important for guiding mana...
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ftdoajarticles:oai:doaj.org/article:0bda782022e74c4185dc9913e1e22057 2023-05-15T13:29:58+02:00 Genetic assessment reveals inbreeding, possible hybridization, and low levels of genetic structure in a declining goose population Johanna Honka Serena Baini Jeremy B. Searle Laura Kvist Jouni Aspi 2022-01-01T00:00:00Z https://doi.org/10.1002/ece3.8547 https://doaj.org/article/0bda782022e74c4185dc9913e1e22057 EN eng Wiley https://doi.org/10.1002/ece3.8547 https://doaj.org/toc/2045-7758 2045-7758 doi:10.1002/ece3.8547 https://doaj.org/article/0bda782022e74c4185dc9913e1e22057 Ecology and Evolution, Vol 12, Iss 1, Pp n/a-n/a (2022) Anser fabalis citizen science control region hybridization microsatellites mitochondrial DNA Ecology QH540-549.5 article 2022 ftdoajarticles https://doi.org/10.1002/ece3.8547 2023-02-19T01:45:47Z Abstract The population numbers of taiga bean goose (Anser fabalis fabalis) have halved during recent decades. Since this subspecies is hunted throughout most of its range, the decline is of management concern. Knowledge of the genetic population structure and diversity is important for guiding management and conservation efforts. Genetically unique subpopulations might be hunted to extinction if not managed separately, and any inbreeding depression or lack of genetic diversity may affect the ability to adapt to changing environments and increase extinction risk. We used microsatellite and mitochondrial DNA markers to study the genetic population structure and diversity among taiga bean geese breeding within the Central flyway management unit using non‐invasively collected feathers. We found some genetic structuring with the maternally inherited mitochondrial DNA between four geographic regions (ɸST = 0.11–0.20) but none with the nuclear microsatellite markers (all pairwise FST‐values = 0.002–0.005). These results could be explained by female natal philopatry and male‐biased dispersal, which completely homogenizes the nuclear genome. Therefore, the population could be managed as a single unit. Genetic diversity was still at a moderate level (average HE = 0.69) and there were no signs of past population size reductions, although significantly positive inbreeding coefficients in all sampling sites (FIS = 0.05–0.10) and high relatedness values (r = 0.60–0.86) between some individuals could indicate inbreeding. In addition, there was evidence of either incomplete lineage sorting or introgression from the pink‐footed goose (Anser brachyrhynchus). The current population is not under threat by genetic impoverishment but monitoring in the future is desirable. Article in Journal/Newspaper Anser brachyrhynchus Anser fabalis Pink-footed Goose taiga Directory of Open Access Journals: DOAJ Articles Ecology and Evolution 12 1 |
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Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
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ftdoajarticles |
language |
English |
topic |
Anser fabalis citizen science control region hybridization microsatellites mitochondrial DNA Ecology QH540-549.5 |
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Anser fabalis citizen science control region hybridization microsatellites mitochondrial DNA Ecology QH540-549.5 Johanna Honka Serena Baini Jeremy B. Searle Laura Kvist Jouni Aspi Genetic assessment reveals inbreeding, possible hybridization, and low levels of genetic structure in a declining goose population |
topic_facet |
Anser fabalis citizen science control region hybridization microsatellites mitochondrial DNA Ecology QH540-549.5 |
description |
Abstract The population numbers of taiga bean goose (Anser fabalis fabalis) have halved during recent decades. Since this subspecies is hunted throughout most of its range, the decline is of management concern. Knowledge of the genetic population structure and diversity is important for guiding management and conservation efforts. Genetically unique subpopulations might be hunted to extinction if not managed separately, and any inbreeding depression or lack of genetic diversity may affect the ability to adapt to changing environments and increase extinction risk. We used microsatellite and mitochondrial DNA markers to study the genetic population structure and diversity among taiga bean geese breeding within the Central flyway management unit using non‐invasively collected feathers. We found some genetic structuring with the maternally inherited mitochondrial DNA between four geographic regions (ɸST = 0.11–0.20) but none with the nuclear microsatellite markers (all pairwise FST‐values = 0.002–0.005). These results could be explained by female natal philopatry and male‐biased dispersal, which completely homogenizes the nuclear genome. Therefore, the population could be managed as a single unit. Genetic diversity was still at a moderate level (average HE = 0.69) and there were no signs of past population size reductions, although significantly positive inbreeding coefficients in all sampling sites (FIS = 0.05–0.10) and high relatedness values (r = 0.60–0.86) between some individuals could indicate inbreeding. In addition, there was evidence of either incomplete lineage sorting or introgression from the pink‐footed goose (Anser brachyrhynchus). The current population is not under threat by genetic impoverishment but monitoring in the future is desirable. |
format |
Article in Journal/Newspaper |
author |
Johanna Honka Serena Baini Jeremy B. Searle Laura Kvist Jouni Aspi |
author_facet |
Johanna Honka Serena Baini Jeremy B. Searle Laura Kvist Jouni Aspi |
author_sort |
Johanna Honka |
title |
Genetic assessment reveals inbreeding, possible hybridization, and low levels of genetic structure in a declining goose population |
title_short |
Genetic assessment reveals inbreeding, possible hybridization, and low levels of genetic structure in a declining goose population |
title_full |
Genetic assessment reveals inbreeding, possible hybridization, and low levels of genetic structure in a declining goose population |
title_fullStr |
Genetic assessment reveals inbreeding, possible hybridization, and low levels of genetic structure in a declining goose population |
title_full_unstemmed |
Genetic assessment reveals inbreeding, possible hybridization, and low levels of genetic structure in a declining goose population |
title_sort |
genetic assessment reveals inbreeding, possible hybridization, and low levels of genetic structure in a declining goose population |
publisher |
Wiley |
publishDate |
2022 |
url |
https://doi.org/10.1002/ece3.8547 https://doaj.org/article/0bda782022e74c4185dc9913e1e22057 |
genre |
Anser brachyrhynchus Anser fabalis Pink-footed Goose taiga |
genre_facet |
Anser brachyrhynchus Anser fabalis Pink-footed Goose taiga |
op_source |
Ecology and Evolution, Vol 12, Iss 1, Pp n/a-n/a (2022) |
op_relation |
https://doi.org/10.1002/ece3.8547 https://doaj.org/toc/2045-7758 2045-7758 doi:10.1002/ece3.8547 https://doaj.org/article/0bda782022e74c4185dc9913e1e22057 |
op_doi |
https://doi.org/10.1002/ece3.8547 |
container_title |
Ecology and Evolution |
container_volume |
12 |
container_issue |
1 |
_version_ |
1766004588077383680 |