Recruitment collapse and population structure of the European eel shaped by local ocean current dynamics
Highlights: • We combine high-resolution ocean models with population genetics • Variation in wind-driven ocean currents mediates the collapse of A. anguilla • Female eels are philopatric within the Sargasso Sea, while males maintain gene flow • We present first evidence of the role of ocean current...
Published in: | Current Biology |
---|---|
Main Authors: | , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Elsevier
2014
|
Subjects: | |
Online Access: | https://oceanrep.geomar.de/id/eprint/22549/ https://oceanrep.geomar.de/id/eprint/22549/1/Baltazar-Soares.pdf https://doi.org/10.1016/j.cub.2013.11.031 |
id |
ftoceanrep:oai:oceanrep.geomar.de:22549 |
---|---|
record_format |
openpolar |
spelling |
ftoceanrep:oai:oceanrep.geomar.de:22549 2023-05-15T13:28:05+02:00 Recruitment collapse and population structure of the European eel shaped by local ocean current dynamics Baltazar-Soares, Miguel Biastoch, Arne Harrod, C. Hanel, Reinhold Marohn, Lasse Prigge, Enno Evans, D. Bodles, K. Behrens, Erik Böning, Claus W. Eizaguirre, Christophe 2014-01-06 text https://oceanrep.geomar.de/id/eprint/22549/ https://oceanrep.geomar.de/id/eprint/22549/1/Baltazar-Soares.pdf https://doi.org/10.1016/j.cub.2013.11.031 en eng Elsevier https://oceanrep.geomar.de/id/eprint/22549/1/Baltazar-Soares.pdf Baltazar-Soares, M. , Biastoch, A. , Harrod, C., Hanel, R., Marohn, L., Prigge, E., Evans, D., Bodles, K., Behrens, E., Böning, C. W. and Eizaguirre, C. (2014) Recruitment collapse and population structure of the European eel shaped by local ocean current dynamics. Open Access Current Biology, 24 (1). pp. 104-108. DOI 10.1016/j.cub.2013.11.031 <https://doi.org/10.1016/j.cub.2013.11.031>. doi:10.1016/j.cub.2013.11.031 cc_by_nc_nd_4.0 info:eu-repo/semantics/openAccess Article PeerReviewed 2014 ftoceanrep https://doi.org/10.1016/j.cub.2013.11.031 2023-04-07T15:10:58Z Highlights: • We combine high-resolution ocean models with population genetics • Variation in wind-driven ocean currents mediates the collapse of A. anguilla • Female eels are philopatric within the Sargasso Sea, while males maintain gene flow • We present first evidence of the role of ocean currents in shaping species’ evolution Summary: Worldwide, exploited marine fish stocks are under threat of collapse [1]. Although the drivers behind such collapses are diverse, it is becoming evident that failure to consider evolutionary processes in fisheries management can have drastic consequences on a species’ long-term viability [2]. The European eel (Anguilla anguilla; Linnaeus, 1758) is no exception: not only does the steep decline in recruitment observed in the 1980s [ 3 and 4] remain largely unexplained, the punctual detection of genetic structure also raises questions regarding the existence of a single panmictic population [ 5, 6 and 7]. With its extended Transatlantic dispersal, pinpointing the role of ocean dynamics is crucial to understand both the population structure and the widespread decline of this species. Hence, we combined dispersal simulations using a half century of high-resolution ocean model data with population genetics tools. We show that regional atmospherically driven ocean current variations in the Sargasso Sea were the major driver of the onset of the sharp decline in eel recruitment in the beginning of the 1980s. The simulations combined with genotyping of natural coastal eel populations furthermore suggest that unexpected evidence of coastal genetic differentiation is consistent with cryptic female philopatric behavior within the Sargasso Sea. Such results demonstrate the key constraint of the variable oceanic environment on the European eel population. Article in Journal/Newspaper Anguilla anguilla European eel OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) Current Biology 24 1 104 108 |
institution |
Open Polar |
collection |
OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) |
op_collection_id |
ftoceanrep |
language |
English |
description |
Highlights: • We combine high-resolution ocean models with population genetics • Variation in wind-driven ocean currents mediates the collapse of A. anguilla • Female eels are philopatric within the Sargasso Sea, while males maintain gene flow • We present first evidence of the role of ocean currents in shaping species’ evolution Summary: Worldwide, exploited marine fish stocks are under threat of collapse [1]. Although the drivers behind such collapses are diverse, it is becoming evident that failure to consider evolutionary processes in fisheries management can have drastic consequences on a species’ long-term viability [2]. The European eel (Anguilla anguilla; Linnaeus, 1758) is no exception: not only does the steep decline in recruitment observed in the 1980s [ 3 and 4] remain largely unexplained, the punctual detection of genetic structure also raises questions regarding the existence of a single panmictic population [ 5, 6 and 7]. With its extended Transatlantic dispersal, pinpointing the role of ocean dynamics is crucial to understand both the population structure and the widespread decline of this species. Hence, we combined dispersal simulations using a half century of high-resolution ocean model data with population genetics tools. We show that regional atmospherically driven ocean current variations in the Sargasso Sea were the major driver of the onset of the sharp decline in eel recruitment in the beginning of the 1980s. The simulations combined with genotyping of natural coastal eel populations furthermore suggest that unexpected evidence of coastal genetic differentiation is consistent with cryptic female philopatric behavior within the Sargasso Sea. Such results demonstrate the key constraint of the variable oceanic environment on the European eel population. |
format |
Article in Journal/Newspaper |
author |
Baltazar-Soares, Miguel Biastoch, Arne Harrod, C. Hanel, Reinhold Marohn, Lasse Prigge, Enno Evans, D. Bodles, K. Behrens, Erik Böning, Claus W. Eizaguirre, Christophe |
spellingShingle |
Baltazar-Soares, Miguel Biastoch, Arne Harrod, C. Hanel, Reinhold Marohn, Lasse Prigge, Enno Evans, D. Bodles, K. Behrens, Erik Böning, Claus W. Eizaguirre, Christophe Recruitment collapse and population structure of the European eel shaped by local ocean current dynamics |
author_facet |
Baltazar-Soares, Miguel Biastoch, Arne Harrod, C. Hanel, Reinhold Marohn, Lasse Prigge, Enno Evans, D. Bodles, K. Behrens, Erik Böning, Claus W. Eizaguirre, Christophe |
author_sort |
Baltazar-Soares, Miguel |
title |
Recruitment collapse and population structure of the European eel shaped by local ocean current dynamics |
title_short |
Recruitment collapse and population structure of the European eel shaped by local ocean current dynamics |
title_full |
Recruitment collapse and population structure of the European eel shaped by local ocean current dynamics |
title_fullStr |
Recruitment collapse and population structure of the European eel shaped by local ocean current dynamics |
title_full_unstemmed |
Recruitment collapse and population structure of the European eel shaped by local ocean current dynamics |
title_sort |
recruitment collapse and population structure of the european eel shaped by local ocean current dynamics |
publisher |
Elsevier |
publishDate |
2014 |
url |
https://oceanrep.geomar.de/id/eprint/22549/ https://oceanrep.geomar.de/id/eprint/22549/1/Baltazar-Soares.pdf https://doi.org/10.1016/j.cub.2013.11.031 |
genre |
Anguilla anguilla European eel |
genre_facet |
Anguilla anguilla European eel |
op_relation |
https://oceanrep.geomar.de/id/eprint/22549/1/Baltazar-Soares.pdf Baltazar-Soares, M. , Biastoch, A. , Harrod, C., Hanel, R., Marohn, L., Prigge, E., Evans, D., Bodles, K., Behrens, E., Böning, C. W. and Eizaguirre, C. (2014) Recruitment collapse and population structure of the European eel shaped by local ocean current dynamics. Open Access Current Biology, 24 (1). pp. 104-108. DOI 10.1016/j.cub.2013.11.031 <https://doi.org/10.1016/j.cub.2013.11.031>. doi:10.1016/j.cub.2013.11.031 |
op_rights |
cc_by_nc_nd_4.0 info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1016/j.cub.2013.11.031 |
container_title |
Current Biology |
container_volume |
24 |
container_issue |
1 |
container_start_page |
104 |
op_container_end_page |
108 |
_version_ |
1766402129197531136 |