Data from: Signatures of natural selection between life cycle stages separated by metamorphosis in European eel
Background: Species showing complex life cycles provide excellent opportunities to study the genetic associations between life cycle stages, as selective pressures may differ before and after metamorphosis. The European eel presents a complex life cycle with two metamorphoses, a first metamorphosis...
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ftdans:oai:easy.dans.knaw.nl:easy-dataset:89990 2023-07-02T03:32:10+02:00 Data from: Signatures of natural selection between life cycle stages separated by metamorphosis in European eel Pujolar, Jose Martin Jacobsen, Magnus W. Bekkevold, Dorte Lobón-Cervia, Javier Jónsson, Bjarni Bernatchez, Louis Hansen, Michael M. 2015-08-28T01:52:46.000+02:00 http://nbn-resolving.org/urn:nbn:nl:ui:13-63-9g9y https://easy.dans.knaw.nl/ui/datasets/id/easy-dataset:89990 unknown doi:10.5061/dryad.kc1q1/1 doi:10.1186/s12864-015-1754-3 PMID:26268725 http://nbn-resolving.org/urn:nbn:nl:ui:13-63-9g9y doi:10.5061/dryad.kc1q1 https://easy.dans.knaw.nl/ui/datasets/id/easy-dataset:89990 OPEN_ACCESS: The data are archived in Easy, they are accessible elsewhere through the DOI https://dans.knaw.nl/en/about/organisation-and-policy/legal-information/DANSLicence.pdf Life sciences medicine and health care 2015 ftdans https://doi.org/10.5061/dryad.kc1q1/110.1186/s12864-015-1754-310.5061/dryad.kc1q1 2023-06-13T13:19:32Z Background: Species showing complex life cycles provide excellent opportunities to study the genetic associations between life cycle stages, as selective pressures may differ before and after metamorphosis. The European eel presents a complex life cycle with two metamorphoses, a first metamorphosis from larvae into glass eels (juvenile stage) and a second metamorphosis into silver eels (adult stage). We tested the hypothesis that different genes and gene pathways will be under selection at different life stages when comparing the genetic associations between glass eels and silver eels. Results: We used two sets of markers to test for selection: first, we genotyped individuals using a panel of 80 coding-gene single nucleotide polymorphisms (SNPs) developed in American eel; second, we investigated selection at the genome level using a total of 153,423 RAD-sequencing generated SNPs widely distributed across the genome. Using the RAD approach, outlier tests identified a total of 2413 (1.57 %) potentially selected SNPs. Functional annotation analysis identified signal transduction pathways as the most over-represented group of genes, including MAPK/Erk signalling, calcium signalling and GnRH (gonadotropin-releasing hormone) signalling. Many of the over-represented pathways were related to growth, while others could result from the different conditions that eels inhabit during their life cycle. Conclusions: The observation of different genes and gene pathways under selection when comparing glass eels vs. silver eels supports the adaptive decoupling hypothesis for the benefits of metamorphosis. Partitioning the life cycle into discrete morphological phases may be overall beneficial since it allows the different life stages to respond independently to their unique selection pressures. This might translate into a more effective use of food and niche resources and/or performance of phase-specific tasks (e.g. feeding in the case of glass eels, migrating and reproducing in the case of silver eels). Other/Unknown Material European eel Data Archiving and Networked Services (DANS): EASY (KNAW - Koninklijke Nederlandse Akademie van Wetenschappen) |
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Data Archiving and Networked Services (DANS): EASY (KNAW - Koninklijke Nederlandse Akademie van Wetenschappen) |
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Life sciences medicine and health care |
spellingShingle |
Life sciences medicine and health care Pujolar, Jose Martin Jacobsen, Magnus W. Bekkevold, Dorte Lobón-Cervia, Javier Jónsson, Bjarni Bernatchez, Louis Hansen, Michael M. Data from: Signatures of natural selection between life cycle stages separated by metamorphosis in European eel |
topic_facet |
Life sciences medicine and health care |
description |
Background: Species showing complex life cycles provide excellent opportunities to study the genetic associations between life cycle stages, as selective pressures may differ before and after metamorphosis. The European eel presents a complex life cycle with two metamorphoses, a first metamorphosis from larvae into glass eels (juvenile stage) and a second metamorphosis into silver eels (adult stage). We tested the hypothesis that different genes and gene pathways will be under selection at different life stages when comparing the genetic associations between glass eels and silver eels. Results: We used two sets of markers to test for selection: first, we genotyped individuals using a panel of 80 coding-gene single nucleotide polymorphisms (SNPs) developed in American eel; second, we investigated selection at the genome level using a total of 153,423 RAD-sequencing generated SNPs widely distributed across the genome. Using the RAD approach, outlier tests identified a total of 2413 (1.57 %) potentially selected SNPs. Functional annotation analysis identified signal transduction pathways as the most over-represented group of genes, including MAPK/Erk signalling, calcium signalling and GnRH (gonadotropin-releasing hormone) signalling. Many of the over-represented pathways were related to growth, while others could result from the different conditions that eels inhabit during their life cycle. Conclusions: The observation of different genes and gene pathways under selection when comparing glass eels vs. silver eels supports the adaptive decoupling hypothesis for the benefits of metamorphosis. Partitioning the life cycle into discrete morphological phases may be overall beneficial since it allows the different life stages to respond independently to their unique selection pressures. This might translate into a more effective use of food and niche resources and/or performance of phase-specific tasks (e.g. feeding in the case of glass eels, migrating and reproducing in the case of silver eels). |
author |
Pujolar, Jose Martin Jacobsen, Magnus W. Bekkevold, Dorte Lobón-Cervia, Javier Jónsson, Bjarni Bernatchez, Louis Hansen, Michael M. |
author_facet |
Pujolar, Jose Martin Jacobsen, Magnus W. Bekkevold, Dorte Lobón-Cervia, Javier Jónsson, Bjarni Bernatchez, Louis Hansen, Michael M. |
author_sort |
Pujolar, Jose Martin |
title |
Data from: Signatures of natural selection between life cycle stages separated by metamorphosis in European eel |
title_short |
Data from: Signatures of natural selection between life cycle stages separated by metamorphosis in European eel |
title_full |
Data from: Signatures of natural selection between life cycle stages separated by metamorphosis in European eel |
title_fullStr |
Data from: Signatures of natural selection between life cycle stages separated by metamorphosis in European eel |
title_full_unstemmed |
Data from: Signatures of natural selection between life cycle stages separated by metamorphosis in European eel |
title_sort |
data from: signatures of natural selection between life cycle stages separated by metamorphosis in european eel |
publishDate |
2015 |
url |
http://nbn-resolving.org/urn:nbn:nl:ui:13-63-9g9y https://easy.dans.knaw.nl/ui/datasets/id/easy-dataset:89990 |
genre |
European eel |
genre_facet |
European eel |
op_relation |
doi:10.5061/dryad.kc1q1/1 doi:10.1186/s12864-015-1754-3 PMID:26268725 http://nbn-resolving.org/urn:nbn:nl:ui:13-63-9g9y doi:10.5061/dryad.kc1q1 https://easy.dans.knaw.nl/ui/datasets/id/easy-dataset:89990 |
op_rights |
OPEN_ACCESS: The data are archived in Easy, they are accessible elsewhere through the DOI https://dans.knaw.nl/en/about/organisation-and-policy/legal-information/DANSLicence.pdf |
op_doi |
https://doi.org/10.5061/dryad.kc1q1/110.1186/s12864-015-1754-310.5061/dryad.kc1q1 |
_version_ |
1770271675461402624 |