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Gene Profiling in the Adipose Fin of Salmonid Fishes Supports Its Function as a Flow Sensor

In stock enhancement and sea-ranching procedures, the adipose fin of hundreds of millions of salmonids is removed for marking purposes annually. However, recent studies proved the significance of the adipose fin as a flow sensor and attraction feature. In the present study, we profiled the specific...

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Autores principales: Koll, Raphael, Martorell Ribera, Joan, Brunner, Ronald M., Rebl, Alexander, Goldammer, Tom
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7016824/
https://www.ncbi.nlm.nih.gov/pubmed/31878086
http://dx.doi.org/10.3390/genes11010021
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author Koll, Raphael
Martorell Ribera, Joan
Brunner, Ronald M.
Rebl, Alexander
Goldammer, Tom
author_facet Koll, Raphael
Martorell Ribera, Joan
Brunner, Ronald M.
Rebl, Alexander
Goldammer, Tom
author_sort Koll, Raphael
collection PubMed
description In stock enhancement and sea-ranching procedures, the adipose fin of hundreds of millions of salmonids is removed for marking purposes annually. However, recent studies proved the significance of the adipose fin as a flow sensor and attraction feature. In the present study, we profiled the specific expression of 20 neuron- and glial cell-marker genes in the adipose fin and seven other tissues (including dorsal and pectoral fin, brain, skin, muscle, head kidney, and liver) of the salmonid species rainbow trout Oncorhynchus mykiss and maraena whitefish Coregonus maraena. Moreover, we measured the transcript abundance of genes coding for 15 mechanoreceptive channel proteins from a variety of mechanoreceptors known in vertebrates. The overall expression patterns indicate the presence of the entire repertoire of neurons, glial cells and receptor proteins on the RNA level. This quantification suggests that the adipose fin contains considerable amounts of small nerve fibers with unmyelinated or slightly myelinated axons and most likely mechanoreceptive potential. The findings are consistent for both rainbow trout and maraena whitefish and support a previous hypothesis about the innervation and potential flow sensory function of the adipose fin. Moreover, our data suggest that the resection of the adipose fin has a stronger impact on the welfare of salmonid fish than previously assumed.
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spelling pubmed-70168242020-02-28 Gene Profiling in the Adipose Fin of Salmonid Fishes Supports Its Function as a Flow Sensor Koll, Raphael Martorell Ribera, Joan Brunner, Ronald M. Rebl, Alexander Goldammer, Tom Genes (Basel) Article In stock enhancement and sea-ranching procedures, the adipose fin of hundreds of millions of salmonids is removed for marking purposes annually. However, recent studies proved the significance of the adipose fin as a flow sensor and attraction feature. In the present study, we profiled the specific expression of 20 neuron- and glial cell-marker genes in the adipose fin and seven other tissues (including dorsal and pectoral fin, brain, skin, muscle, head kidney, and liver) of the salmonid species rainbow trout Oncorhynchus mykiss and maraena whitefish Coregonus maraena. Moreover, we measured the transcript abundance of genes coding for 15 mechanoreceptive channel proteins from a variety of mechanoreceptors known in vertebrates. The overall expression patterns indicate the presence of the entire repertoire of neurons, glial cells and receptor proteins on the RNA level. This quantification suggests that the adipose fin contains considerable amounts of small nerve fibers with unmyelinated or slightly myelinated axons and most likely mechanoreceptive potential. The findings are consistent for both rainbow trout and maraena whitefish and support a previous hypothesis about the innervation and potential flow sensory function of the adipose fin. Moreover, our data suggest that the resection of the adipose fin has a stronger impact on the welfare of salmonid fish than previously assumed. MDPI 2019-12-23 /pmc/articles/PMC7016824/ /pubmed/31878086 http://dx.doi.org/10.3390/genes11010021 Text en © 2019 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Koll, Raphael
Martorell Ribera, Joan
Brunner, Ronald M.
Rebl, Alexander
Goldammer, Tom
Gene Profiling in the Adipose Fin of Salmonid Fishes Supports Its Function as a Flow Sensor
title Gene Profiling in the Adipose Fin of Salmonid Fishes Supports Its Function as a Flow Sensor
title_full Gene Profiling in the Adipose Fin of Salmonid Fishes Supports Its Function as a Flow Sensor
title_fullStr Gene Profiling in the Adipose Fin of Salmonid Fishes Supports Its Function as a Flow Sensor
title_full_unstemmed Gene Profiling in the Adipose Fin of Salmonid Fishes Supports Its Function as a Flow Sensor
title_short Gene Profiling in the Adipose Fin of Salmonid Fishes Supports Its Function as a Flow Sensor
title_sort gene profiling in the adipose fin of salmonid fishes supports its function as a flow sensor
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7016824/
https://www.ncbi.nlm.nih.gov/pubmed/31878086
http://dx.doi.org/10.3390/genes11010021
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