Differences in brain gene transcription profiles advocate for an important role of cognitive function in upstream migration and water obstacles crossing in European eel
Abstract Background European eel is a panmictic species, whose decline has been recorded since the last 20 years. Among human-induced environmental factors of decline, the impact of water dams during species migration is questioned. The main issue of this study was to pinpoint phenotypic traits that...
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ftbiomed:oai:biomedcentral.com:s12864-015-1589-y 2023-05-15T16:08:37+02:00 Differences in brain gene transcription profiles advocate for an important role of cognitive function in upstream migration and water obstacles crossing in European eel Podgorniak, Tomasz Milan, Massimo Pujolar, Jose Maes, Gregory E Bargelloni, Luca De Oliveira, Eric Pierron, Fabien Daverat, Francoise 2015-05-12 http://www.biomedcentral.com/1471-2164/16/378 en eng BioMed Central Ltd. http://www.biomedcentral.com/1471-2164/16/378 Copyright 2015 Podgorniak et al.; licensee BioMed Central. Transcripomics European eel Water dams Microarray Synaptic plasticity Fish brain Research article 2015 ftbiomed 2015-05-16T23:56:50Z Abstract Background European eel is a panmictic species, whose decline has been recorded since the last 20 years. Among human-induced environmental factors of decline, the impact of water dams during species migration is questioned. The main issue of this study was to pinpoint phenotypic traits that predisposed glass eels to successful passage by water barriers. The approach of the study was individual-centred and without any a priori hypothesis on traits involved in the putative obstacles selective pressure. We analyzed the transcription level of 14,913 genes. Results Transcriptome analysis of three tissues (brain, liver and muscle) from individuals sampled on three successive forebays separated by water obstacles indicated different gene transcription profiles in brain between the two upstream forebays. No differences in gene transcription levels were observed in liver and muscle samples among segments. A total of 26 genes were differentially transcribed in brain. These genes encode for, among others, keratins, cytokeratins, calcium binding proteins (S100 family), cofilin, calmodulin, claudin and thy-1 membrane glycoprotein. The functional analysis of these genes highlighted a putative role of cytoskeletal dynamics and synaptic plasticity in fish upstream migration. Conclusion Synaptic connections in brain are solicited while eels are climbing the obstacles with poorly designed fishways. Successful passage by such barriers can be related to spatial learning and spatial orientation abilities when fish is out of the water. Article in Journal/Newspaper European eel BioMed Central |
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ftbiomed |
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English |
topic |
Transcripomics European eel Water dams Microarray Synaptic plasticity Fish brain |
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Transcripomics European eel Water dams Microarray Synaptic plasticity Fish brain Podgorniak, Tomasz Milan, Massimo Pujolar, Jose Maes, Gregory E Bargelloni, Luca De Oliveira, Eric Pierron, Fabien Daverat, Francoise Differences in brain gene transcription profiles advocate for an important role of cognitive function in upstream migration and water obstacles crossing in European eel |
topic_facet |
Transcripomics European eel Water dams Microarray Synaptic plasticity Fish brain |
description |
Abstract Background European eel is a panmictic species, whose decline has been recorded since the last 20 years. Among human-induced environmental factors of decline, the impact of water dams during species migration is questioned. The main issue of this study was to pinpoint phenotypic traits that predisposed glass eels to successful passage by water barriers. The approach of the study was individual-centred and without any a priori hypothesis on traits involved in the putative obstacles selective pressure. We analyzed the transcription level of 14,913 genes. Results Transcriptome analysis of three tissues (brain, liver and muscle) from individuals sampled on three successive forebays separated by water obstacles indicated different gene transcription profiles in brain between the two upstream forebays. No differences in gene transcription levels were observed in liver and muscle samples among segments. A total of 26 genes were differentially transcribed in brain. These genes encode for, among others, keratins, cytokeratins, calcium binding proteins (S100 family), cofilin, calmodulin, claudin and thy-1 membrane glycoprotein. The functional analysis of these genes highlighted a putative role of cytoskeletal dynamics and synaptic plasticity in fish upstream migration. Conclusion Synaptic connections in brain are solicited while eels are climbing the obstacles with poorly designed fishways. Successful passage by such barriers can be related to spatial learning and spatial orientation abilities when fish is out of the water. |
format |
Article in Journal/Newspaper |
author |
Podgorniak, Tomasz Milan, Massimo Pujolar, Jose Maes, Gregory E Bargelloni, Luca De Oliveira, Eric Pierron, Fabien Daverat, Francoise |
author_facet |
Podgorniak, Tomasz Milan, Massimo Pujolar, Jose Maes, Gregory E Bargelloni, Luca De Oliveira, Eric Pierron, Fabien Daverat, Francoise |
author_sort |
Podgorniak, Tomasz |
title |
Differences in brain gene transcription profiles advocate for an important role of cognitive function in upstream migration and water obstacles crossing in European eel |
title_short |
Differences in brain gene transcription profiles advocate for an important role of cognitive function in upstream migration and water obstacles crossing in European eel |
title_full |
Differences in brain gene transcription profiles advocate for an important role of cognitive function in upstream migration and water obstacles crossing in European eel |
title_fullStr |
Differences in brain gene transcription profiles advocate for an important role of cognitive function in upstream migration and water obstacles crossing in European eel |
title_full_unstemmed |
Differences in brain gene transcription profiles advocate for an important role of cognitive function in upstream migration and water obstacles crossing in European eel |
title_sort |
differences in brain gene transcription profiles advocate for an important role of cognitive function in upstream migration and water obstacles crossing in european eel |
publisher |
BioMed Central Ltd. |
publishDate |
2015 |
url |
http://www.biomedcentral.com/1471-2164/16/378 |
genre |
European eel |
genre_facet |
European eel |
op_relation |
http://www.biomedcentral.com/1471-2164/16/378 |
op_rights |
Copyright 2015 Podgorniak et al.; licensee BioMed Central. |
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1766404648882667520 |