Speciation reversal in European whitefish (Coregonus lavaretus (L.)) caused by competitor invasion
Invasion of exotic species has caused the loss of biodiversity and imparts evolutionary and ecological changes in the introduced systems. In northern Fennoscandia, European whitefish (Coregonus lavaretus (L.)) is a highly polymorphic species displaying adaptive radiations into partially reproductive...
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ftunivtroemsoe:oai:munin.uit.no:10037/5965 2023-05-15T16:12:10+02:00 Speciation reversal in European whitefish (Coregonus lavaretus (L.)) caused by competitor invasion Bhat, Shripathi Amundsen, Per-Arne Knudsen, Rune Gjelland, Karl Øystein Fevolden, Svein-Erik Bernatchez, Louis Præbel, Kim 2014 https://hdl.handle.net/10037/5965 https://doi.org/10.1371/journal.pone.0091208 eng eng Public Library of Science (PLoS) PLoS ONE 9(2014) nr. 3 s. e91208- FRIDAID 1114500 http://dx.doi.org/10.1371/journal.pone.0091208 1932-6203 https://hdl.handle.net/10037/5965 URN:NBN:no-uit_munin_5655 openAccess VDP::Mathematics and natural science: 400::Zoology and botany: 480::Limnology: 498 VDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480::Limnologi: 498 Journal article Tidsskriftartikkel Peer reviewed 2014 ftunivtroemsoe https://doi.org/10.1371/journal.pone.0091208 2021-06-25T17:53:47Z Invasion of exotic species has caused the loss of biodiversity and imparts evolutionary and ecological changes in the introduced systems. In northern Fennoscandia, European whitefish (Coregonus lavaretus (L.)) is a highly polymorphic species displaying adaptive radiations into partially reproductively isolated and thus genetically differentiated sympatric morphs utilizing the planktivorous and benthivorous food niche in many lakes. In 1993, Lake Skrukkebukta was invaded by vendace (Coregonus albula (L.)) which is a zooplanktivorous specialist. The vendace displaced the densely rakered whitefish from its preferred pelagic niche to the benthic habitat harbouring the large sparsely rakered whitefish. In this study, we investigate the potential influence of the vendace invasion on the breakdown of reproductive isolation between the two whitefish morphs. We inferred the genotypic and phenotypic differentiation between the two morphs collected at the arrival (1993) and 15 years after (2008) the vendace invasion using 16 microsatellite loci and gill raker numbers, the most distinctive adaptive phenotypic trait between them. The comparison of gill raker number distributions revealed two modes growing closer over 15 years following the invasion. Bayesian analyses of genotypes revealed that the two genetically distinct whitefish morphs that existed in 1993 had collapsed into a single population in 2008. The decline in association between the gill raker numbers and admixture values over 15 years corroborates the findings from the Bayesian analysis. Our study thus suggests an apparent decrease of reproductive isolation in a morph-pair of European whitefish within 15 years (. 3 generations) following the invasion of a superior trophic competitor (vendace) in a subarctic lake, reflecting a situation of ‘‘speciation in reverse’’. Article in Journal/Newspaper Fennoscandia Subarctic University of Tromsø: Munin Open Research Archive PLoS ONE 9 3 e91208 |
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Open Polar |
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University of Tromsø: Munin Open Research Archive |
op_collection_id |
ftunivtroemsoe |
language |
English |
topic |
VDP::Mathematics and natural science: 400::Zoology and botany: 480::Limnology: 498 VDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480::Limnologi: 498 |
spellingShingle |
VDP::Mathematics and natural science: 400::Zoology and botany: 480::Limnology: 498 VDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480::Limnologi: 498 Bhat, Shripathi Amundsen, Per-Arne Knudsen, Rune Gjelland, Karl Øystein Fevolden, Svein-Erik Bernatchez, Louis Præbel, Kim Speciation reversal in European whitefish (Coregonus lavaretus (L.)) caused by competitor invasion |
topic_facet |
VDP::Mathematics and natural science: 400::Zoology and botany: 480::Limnology: 498 VDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480::Limnologi: 498 |
description |
Invasion of exotic species has caused the loss of biodiversity and imparts evolutionary and ecological changes in the introduced systems. In northern Fennoscandia, European whitefish (Coregonus lavaretus (L.)) is a highly polymorphic species displaying adaptive radiations into partially reproductively isolated and thus genetically differentiated sympatric morphs utilizing the planktivorous and benthivorous food niche in many lakes. In 1993, Lake Skrukkebukta was invaded by vendace (Coregonus albula (L.)) which is a zooplanktivorous specialist. The vendace displaced the densely rakered whitefish from its preferred pelagic niche to the benthic habitat harbouring the large sparsely rakered whitefish. In this study, we investigate the potential influence of the vendace invasion on the breakdown of reproductive isolation between the two whitefish morphs. We inferred the genotypic and phenotypic differentiation between the two morphs collected at the arrival (1993) and 15 years after (2008) the vendace invasion using 16 microsatellite loci and gill raker numbers, the most distinctive adaptive phenotypic trait between them. The comparison of gill raker number distributions revealed two modes growing closer over 15 years following the invasion. Bayesian analyses of genotypes revealed that the two genetically distinct whitefish morphs that existed in 1993 had collapsed into a single population in 2008. The decline in association between the gill raker numbers and admixture values over 15 years corroborates the findings from the Bayesian analysis. Our study thus suggests an apparent decrease of reproductive isolation in a morph-pair of European whitefish within 15 years (. 3 generations) following the invasion of a superior trophic competitor (vendace) in a subarctic lake, reflecting a situation of ‘‘speciation in reverse’’. |
format |
Article in Journal/Newspaper |
author |
Bhat, Shripathi Amundsen, Per-Arne Knudsen, Rune Gjelland, Karl Øystein Fevolden, Svein-Erik Bernatchez, Louis Præbel, Kim |
author_facet |
Bhat, Shripathi Amundsen, Per-Arne Knudsen, Rune Gjelland, Karl Øystein Fevolden, Svein-Erik Bernatchez, Louis Præbel, Kim |
author_sort |
Bhat, Shripathi |
title |
Speciation reversal in European whitefish (Coregonus lavaretus (L.)) caused by competitor invasion |
title_short |
Speciation reversal in European whitefish (Coregonus lavaretus (L.)) caused by competitor invasion |
title_full |
Speciation reversal in European whitefish (Coregonus lavaretus (L.)) caused by competitor invasion |
title_fullStr |
Speciation reversal in European whitefish (Coregonus lavaretus (L.)) caused by competitor invasion |
title_full_unstemmed |
Speciation reversal in European whitefish (Coregonus lavaretus (L.)) caused by competitor invasion |
title_sort |
speciation reversal in european whitefish (coregonus lavaretus (l.)) caused by competitor invasion |
publisher |
Public Library of Science (PLoS) |
publishDate |
2014 |
url |
https://hdl.handle.net/10037/5965 https://doi.org/10.1371/journal.pone.0091208 |
genre |
Fennoscandia Subarctic |
genre_facet |
Fennoscandia Subarctic |
op_relation |
PLoS ONE 9(2014) nr. 3 s. e91208- FRIDAID 1114500 http://dx.doi.org/10.1371/journal.pone.0091208 1932-6203 https://hdl.handle.net/10037/5965 URN:NBN:no-uit_munin_5655 |
op_rights |
openAccess |
op_doi |
https://doi.org/10.1371/journal.pone.0091208 |
container_title |
PLoS ONE |
container_volume |
9 |
container_issue |
3 |
container_start_page |
e91208 |
_version_ |
1765997417852829696 |