Does asymmetric gene flow among matrilines maintain the evolutionary potential of the European eel?
Using evolutionary theory to predict the dynamics of populations is one of the aims of evolutionary conservation. In endangered species, with geographic range extending over continuous areas, the predictive capacity of evolutionary-based conservation measures greatly depends on the accurate identifi...
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ftoceanrep:oai:oceanrep.geomar.de:33320 |
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record_format |
openpolar |
institution |
Open Polar |
collection |
OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) |
op_collection_id |
ftoceanrep |
language |
English |
description |
Using evolutionary theory to predict the dynamics of populations is one of the aims of evolutionary conservation. In endangered species, with geographic range extending over continuous areas, the predictive capacity of evolutionary-based conservation measures greatly depends on the accurate identification of reproductive units. The endangered European eel (Anguilla anguilla) is a highly migratory fish species with declining population due to a steep recruitment collapse in the beginning of the 1980s. Despite punctual observations of genetic structure, the population is viewed as a single panmictic reproductive unit. To understand the possible origin of the detected structure in this species, we used a combination of mitochondrial and nuclear loci to indirectly evaluate the possible existence of cryptic demes. For that, 403 glass eels from three successive cohorts arriving at a single location were screened for phenotypic and genetic diversity, while controlling for possible geographic variation. Over the 3 years of sampling, we consistently identified three major matrilines which we hypothesized to represent demes. Interestingly, not only we found that population genetic models support the existence of those matriline-driven demes over a completely panmictic mode of reproduction, but also we found evidence for asymmetric gene flow amongst those demes. We uphold the suggestion that the detection of demes related to those matrilines reflect a fragmented spawning ground, a conceptually plausible consequence of the low abundance that the European eel has been experiencing for three decades. Furthermore, we suggest that this cryptic organization may contribute to the maintenance of the adaptive potential of the species. |
format |
Article in Journal/Newspaper |
author |
Baltazar-Soares, Miguel Eizaguirre, Christophe |
spellingShingle |
Baltazar-Soares, Miguel Eizaguirre, Christophe Does asymmetric gene flow among matrilines maintain the evolutionary potential of the European eel? |
author_facet |
Baltazar-Soares, Miguel Eizaguirre, Christophe |
author_sort |
Baltazar-Soares, Miguel |
title |
Does asymmetric gene flow among matrilines maintain the evolutionary potential of the European eel? |
title_short |
Does asymmetric gene flow among matrilines maintain the evolutionary potential of the European eel? |
title_full |
Does asymmetric gene flow among matrilines maintain the evolutionary potential of the European eel? |
title_fullStr |
Does asymmetric gene flow among matrilines maintain the evolutionary potential of the European eel? |
title_full_unstemmed |
Does asymmetric gene flow among matrilines maintain the evolutionary potential of the European eel? |
title_sort |
does asymmetric gene flow among matrilines maintain the evolutionary potential of the european eel? |
publisher |
Wiley |
publishDate |
2016 |
url |
https://oceanrep.geomar.de/id/eprint/33320/ https://oceanrep.geomar.de/id/eprint/33320/1/Baltazar-Soares%26Eizaguirre%202016%20Ecology%20and%20Evolution.pdf https://oceanrep.geomar.de/id/eprint/33320/7/ece32098-sup-0001-FigS1.pdf https://oceanrep.geomar.de/id/eprint/33320/8/ece32098-sup-0002-FigS2.pdf https://oceanrep.geomar.de/id/eprint/33320/9/ece32098-sup-0003-FigS3.pdf https://oceanrep.geomar.de/id/eprint/33320/10/ece32098-sup-0004-FigS4.pdf https://oceanrep.geomar.de/id/eprint/33320/11/ece32098-sup-0005-FigS5.pdf https://oceanrep.geomar.de/id/eprint/33320/12/ece32098-sup-0006-FigS6.pdf https://oceanrep.geomar.de/id/eprint/33320/13/ece32098-sup-0007-SupInfo.docx https://oceanrep.geomar.de/id/eprint/33320/14/ece32098-sup-0008-appendixS1.txt https://oceanrep.geomar.de/id/eprint/33320/15/ece32098-sup-0009-appendixS2.txt https://oceanrep.geomar.de/id/eprint/33320/16/ece32098-sup-0010-Legends.docx https://doi.org/10.1002/ece3.2098 |
genre |
Anguilla anguilla European eel |
genre_facet |
Anguilla anguilla European eel |
op_relation |
https://oceanrep.geomar.de/id/eprint/33320/1/Baltazar-Soares%26Eizaguirre%202016%20Ecology%20and%20Evolution.pdf https://oceanrep.geomar.de/id/eprint/33320/7/ece32098-sup-0001-FigS1.pdf https://oceanrep.geomar.de/id/eprint/33320/8/ece32098-sup-0002-FigS2.pdf https://oceanrep.geomar.de/id/eprint/33320/9/ece32098-sup-0003-FigS3.pdf https://oceanrep.geomar.de/id/eprint/33320/10/ece32098-sup-0004-FigS4.pdf https://oceanrep.geomar.de/id/eprint/33320/11/ece32098-sup-0005-FigS5.pdf https://oceanrep.geomar.de/id/eprint/33320/12/ece32098-sup-0006-FigS6.pdf https://oceanrep.geomar.de/id/eprint/33320/13/ece32098-sup-0007-SupInfo.docx https://oceanrep.geomar.de/id/eprint/33320/14/ece32098-sup-0008-appendixS1.txt https://oceanrep.geomar.de/id/eprint/33320/15/ece32098-sup-0009-appendixS2.txt https://oceanrep.geomar.de/id/eprint/33320/16/ece32098-sup-0010-Legends.docx Baltazar-Soares, M. and Eizaguirre, C. (2016) Does asymmetric gene flow among matrilines maintain the evolutionary potential of the European eel?. Open Access Ecology and Evolution, 6 (15). pp. 5305-5320. DOI 10.1002/ece3.2098 <https://doi.org/10.1002/ece3.2098>. doi:10.1002/ece3.2098 |
op_rights |
cc_by_4.0 info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1002/ece3.2098 |
container_title |
Ecology and Evolution |
container_volume |
6 |
container_issue |
15 |
container_start_page |
5305 |
op_container_end_page |
5320 |
_version_ |
1766401700713725952 |
spelling |
ftoceanrep:oai:oceanrep.geomar.de:33320 2023-05-15T13:28:01+02:00 Does asymmetric gene flow among matrilines maintain the evolutionary potential of the European eel? Baltazar-Soares, Miguel Eizaguirre, Christophe 2016-08 text https://oceanrep.geomar.de/id/eprint/33320/ https://oceanrep.geomar.de/id/eprint/33320/1/Baltazar-Soares%26Eizaguirre%202016%20Ecology%20and%20Evolution.pdf https://oceanrep.geomar.de/id/eprint/33320/7/ece32098-sup-0001-FigS1.pdf https://oceanrep.geomar.de/id/eprint/33320/8/ece32098-sup-0002-FigS2.pdf https://oceanrep.geomar.de/id/eprint/33320/9/ece32098-sup-0003-FigS3.pdf https://oceanrep.geomar.de/id/eprint/33320/10/ece32098-sup-0004-FigS4.pdf https://oceanrep.geomar.de/id/eprint/33320/11/ece32098-sup-0005-FigS5.pdf https://oceanrep.geomar.de/id/eprint/33320/12/ece32098-sup-0006-FigS6.pdf https://oceanrep.geomar.de/id/eprint/33320/13/ece32098-sup-0007-SupInfo.docx https://oceanrep.geomar.de/id/eprint/33320/14/ece32098-sup-0008-appendixS1.txt https://oceanrep.geomar.de/id/eprint/33320/15/ece32098-sup-0009-appendixS2.txt https://oceanrep.geomar.de/id/eprint/33320/16/ece32098-sup-0010-Legends.docx https://doi.org/10.1002/ece3.2098 en eng Wiley https://oceanrep.geomar.de/id/eprint/33320/1/Baltazar-Soares%26Eizaguirre%202016%20Ecology%20and%20Evolution.pdf https://oceanrep.geomar.de/id/eprint/33320/7/ece32098-sup-0001-FigS1.pdf https://oceanrep.geomar.de/id/eprint/33320/8/ece32098-sup-0002-FigS2.pdf https://oceanrep.geomar.de/id/eprint/33320/9/ece32098-sup-0003-FigS3.pdf https://oceanrep.geomar.de/id/eprint/33320/10/ece32098-sup-0004-FigS4.pdf https://oceanrep.geomar.de/id/eprint/33320/11/ece32098-sup-0005-FigS5.pdf https://oceanrep.geomar.de/id/eprint/33320/12/ece32098-sup-0006-FigS6.pdf https://oceanrep.geomar.de/id/eprint/33320/13/ece32098-sup-0007-SupInfo.docx https://oceanrep.geomar.de/id/eprint/33320/14/ece32098-sup-0008-appendixS1.txt https://oceanrep.geomar.de/id/eprint/33320/15/ece32098-sup-0009-appendixS2.txt https://oceanrep.geomar.de/id/eprint/33320/16/ece32098-sup-0010-Legends.docx Baltazar-Soares, M. and Eizaguirre, C. (2016) Does asymmetric gene flow among matrilines maintain the evolutionary potential of the European eel?. Open Access Ecology and Evolution, 6 (15). pp. 5305-5320. DOI 10.1002/ece3.2098 <https://doi.org/10.1002/ece3.2098>. doi:10.1002/ece3.2098 cc_by_4.0 info:eu-repo/semantics/openAccess Article PeerReviewed 2016 ftoceanrep https://doi.org/10.1002/ece3.2098 2023-04-07T15:26:30Z Using evolutionary theory to predict the dynamics of populations is one of the aims of evolutionary conservation. In endangered species, with geographic range extending over continuous areas, the predictive capacity of evolutionary-based conservation measures greatly depends on the accurate identification of reproductive units. The endangered European eel (Anguilla anguilla) is a highly migratory fish species with declining population due to a steep recruitment collapse in the beginning of the 1980s. Despite punctual observations of genetic structure, the population is viewed as a single panmictic reproductive unit. To understand the possible origin of the detected structure in this species, we used a combination of mitochondrial and nuclear loci to indirectly evaluate the possible existence of cryptic demes. For that, 403 glass eels from three successive cohorts arriving at a single location were screened for phenotypic and genetic diversity, while controlling for possible geographic variation. Over the 3 years of sampling, we consistently identified three major matrilines which we hypothesized to represent demes. Interestingly, not only we found that population genetic models support the existence of those matriline-driven demes over a completely panmictic mode of reproduction, but also we found evidence for asymmetric gene flow amongst those demes. We uphold the suggestion that the detection of demes related to those matrilines reflect a fragmented spawning ground, a conceptually plausible consequence of the low abundance that the European eel has been experiencing for three decades. Furthermore, we suggest that this cryptic organization may contribute to the maintenance of the adaptive potential of the species. Article in Journal/Newspaper Anguilla anguilla European eel OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) Ecology and Evolution 6 15 5305 5320 |