Integrative use of spatial, genetic, and demographic analyses for investigating genetic connectivity between migratory, montane, and sedentary caribou herds
Genetic differentiation is generally assumed to be low in highly mobile species, but this simplistic view may obscure the complex conditions and mechanisms allowing genetic exchanges between specific populations. Here, we combined data from satellite‐tracked migratory caribou (Rangifer tarandus), mi...
Published in: | Molecular Ecology |
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Language: | English |
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2020
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Online Access: | https://hdl.handle.net/20.500.11794/40273 https://doi.org/10.1111/j.1365-294X.2007.03476.x |
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ftunivlavalcorp:oai:corpus.ulaval.ca:20.500.11794/40273 2024-06-23T07:56:21+00:00 Integrative use of spatial, genetic, and demographic analyses for investigating genetic connectivity between migratory, montane, and sedentary caribou herds Boulet, Marylène Bernatchez, Louis Couturier, Serge Côté, Steeve D. Otto, Robert D. Canada (Est) 2020-09-01T11:08:02Z application/pdf https://hdl.handle.net/20.500.11794/40273 https://doi.org/10.1111/j.1365-294X.2007.03476.x eng eng Blackwell scientific 0962-1083 http://hdl.handle.net/20.500.11794/40273 doi:10.1111/j.1365-294X.2007.03476.x 17784914 http://purl.org/coar/access_right/c_16ec Caribou Demographic simulations Gene flow Metapopulation Microsatellite Population structure Rangifer tarandus Satellite-tracking Caribou des bois -- Génétique Flux génétique Métapopulations article de recherche COAR1_1::Texte::Périodique::Revue::Contribution à un journal::Article::Article de recherche 2020 ftunivlavalcorp https://doi.org/20.500.11794/4027310.1111/j.1365-294X.2007.03476.x 2024-06-03T23:43:59Z Genetic differentiation is generally assumed to be low in highly mobile species, but this simplistic view may obscure the complex conditions and mechanisms allowing genetic exchanges between specific populations. Here, we combined data from satellite‐tracked migratory caribou (Rangifer tarandus), microsatellite markers, and demographic simulations to investigate gene flow mechanisms between seven caribou herds of eastern Canada. Our study included one montane, two migratory, and four sedentary herds. Satellite‐tracking data indicated possibilities of high gene flow between migratory herds: overlap of their rutting ranges averaged 10% across years and 9.4% of females switched calving sites at least once in their lifetime. Some migratory individuals moved into the range of the sedentary herds, suggesting possibilities of gene flow between these herds. Genetic differentiation between herds was weak but significant (FST = 0.015): migratory and montane herds were not significantly distinct (FST all ≤ 0.005), whereas sedentary herds were more differentiated (FST = 0.018–0.048). Geographical distances among sedentary herds limited gene flow. Historical estimates of gene flow were higher from migratory herds into sedentary herds (4Nm all > 9) than vice‐versa (4Nm all < 5), which suggests migratory herds had a demographic impact on sedentary herds. Demographic simulations showed that an effective immigration rate of 0.0005 was sufficient to obtain the empirical FST of 0.015, while a null immigration rate increased the simulated FST to > 0.6. In conclusion, the weak genetic differentiation between herds cannot be obtained without some genetic exchanges among herds, as demonstrated by genetic and spatial data. Other/Unknown Material Rangifer tarandus Université Laval: CorpusUL Canada Molecular Ecology 16 20 4223 4240 |
institution |
Open Polar |
collection |
Université Laval: CorpusUL |
op_collection_id |
ftunivlavalcorp |
language |
English |
topic |
Caribou Demographic simulations Gene flow Metapopulation Microsatellite Population structure Rangifer tarandus Satellite-tracking Caribou des bois -- Génétique Flux génétique Métapopulations |
spellingShingle |
Caribou Demographic simulations Gene flow Metapopulation Microsatellite Population structure Rangifer tarandus Satellite-tracking Caribou des bois -- Génétique Flux génétique Métapopulations Boulet, Marylène Bernatchez, Louis Couturier, Serge Côté, Steeve D. Otto, Robert D. Integrative use of spatial, genetic, and demographic analyses for investigating genetic connectivity between migratory, montane, and sedentary caribou herds |
topic_facet |
Caribou Demographic simulations Gene flow Metapopulation Microsatellite Population structure Rangifer tarandus Satellite-tracking Caribou des bois -- Génétique Flux génétique Métapopulations |
description |
Genetic differentiation is generally assumed to be low in highly mobile species, but this simplistic view may obscure the complex conditions and mechanisms allowing genetic exchanges between specific populations. Here, we combined data from satellite‐tracked migratory caribou (Rangifer tarandus), microsatellite markers, and demographic simulations to investigate gene flow mechanisms between seven caribou herds of eastern Canada. Our study included one montane, two migratory, and four sedentary herds. Satellite‐tracking data indicated possibilities of high gene flow between migratory herds: overlap of their rutting ranges averaged 10% across years and 9.4% of females switched calving sites at least once in their lifetime. Some migratory individuals moved into the range of the sedentary herds, suggesting possibilities of gene flow between these herds. Genetic differentiation between herds was weak but significant (FST = 0.015): migratory and montane herds were not significantly distinct (FST all ≤ 0.005), whereas sedentary herds were more differentiated (FST = 0.018–0.048). Geographical distances among sedentary herds limited gene flow. Historical estimates of gene flow were higher from migratory herds into sedentary herds (4Nm all > 9) than vice‐versa (4Nm all < 5), which suggests migratory herds had a demographic impact on sedentary herds. Demographic simulations showed that an effective immigration rate of 0.0005 was sufficient to obtain the empirical FST of 0.015, while a null immigration rate increased the simulated FST to > 0.6. In conclusion, the weak genetic differentiation between herds cannot be obtained without some genetic exchanges among herds, as demonstrated by genetic and spatial data. |
format |
Other/Unknown Material |
author |
Boulet, Marylène Bernatchez, Louis Couturier, Serge Côté, Steeve D. Otto, Robert D. |
author_facet |
Boulet, Marylène Bernatchez, Louis Couturier, Serge Côté, Steeve D. Otto, Robert D. |
author_sort |
Boulet, Marylène |
title |
Integrative use of spatial, genetic, and demographic analyses for investigating genetic connectivity between migratory, montane, and sedentary caribou herds |
title_short |
Integrative use of spatial, genetic, and demographic analyses for investigating genetic connectivity between migratory, montane, and sedentary caribou herds |
title_full |
Integrative use of spatial, genetic, and demographic analyses for investigating genetic connectivity between migratory, montane, and sedentary caribou herds |
title_fullStr |
Integrative use of spatial, genetic, and demographic analyses for investigating genetic connectivity between migratory, montane, and sedentary caribou herds |
title_full_unstemmed |
Integrative use of spatial, genetic, and demographic analyses for investigating genetic connectivity between migratory, montane, and sedentary caribou herds |
title_sort |
integrative use of spatial, genetic, and demographic analyses for investigating genetic connectivity between migratory, montane, and sedentary caribou herds |
publisher |
Blackwell scientific |
publishDate |
2020 |
url |
https://hdl.handle.net/20.500.11794/40273 https://doi.org/10.1111/j.1365-294X.2007.03476.x |
op_coverage |
Canada (Est) |
geographic |
Canada |
geographic_facet |
Canada |
genre |
Rangifer tarandus |
genre_facet |
Rangifer tarandus |
op_relation |
0962-1083 http://hdl.handle.net/20.500.11794/40273 doi:10.1111/j.1365-294X.2007.03476.x 17784914 |
op_rights |
http://purl.org/coar/access_right/c_16ec |
op_doi |
https://doi.org/20.500.11794/4027310.1111/j.1365-294X.2007.03476.x |
container_title |
Molecular Ecology |
container_volume |
16 |
container_issue |
20 |
container_start_page |
4223 |
op_container_end_page |
4240 |
_version_ |
1802649396324597760 |