Potential of Otolith Microchemistry to Distinguish Nursery Areas of Salmon within River Simojoki
Draining into the northern Baltic Sea, River Simojoki is an important spawning river for Atlantic salmon. The present study aimed to preliminary explore the potential of analysing the elemental composition of otoliths to distinguish the within-river nursery area of origin for salmon. Parr were sampl...
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2023
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Online Access: | https://doi.org/10.3390/fishes8060332 https://doaj.org/article/b346a752323c45b89c3ed94723ef2ed2 |
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ftdoajarticles:oai:doaj.org/article:b346a752323c45b89c3ed94723ef2ed2 2023-07-23T04:18:23+02:00 Potential of Otolith Microchemistry to Distinguish Nursery Areas of Salmon within River Simojoki Viktor Finnäs Erkki Jokikokko Jan-Olof Lill Yann Lahaye Henry Hägerstrand Kai Lindström 2023-06-01T00:00:00Z https://doi.org/10.3390/fishes8060332 https://doaj.org/article/b346a752323c45b89c3ed94723ef2ed2 EN eng MDPI AG https://www.mdpi.com/2410-3888/8/6/332 https://doaj.org/toc/2410-3888 doi:10.3390/fishes8060332 2410-3888 https://doaj.org/article/b346a752323c45b89c3ed94723ef2ed2 Fishes, Vol 8, Iss 332, p 332 (2023) otolith salmon random forests discriminant function analysis Biology (General) QH301-705.5 Genetics QH426-470 article 2023 ftdoajarticles https://doi.org/10.3390/fishes8060332 2023-07-02T00:38:22Z Draining into the northern Baltic Sea, River Simojoki is an important spawning river for Atlantic salmon. The present study aimed to preliminary explore the potential of analysing the elemental composition of otoliths to distinguish the within-river nursery area of origin for salmon. Parr were sampled at three nursery areas in the river and smolts of unknown origin were sampled near the river mouth during the migration to the sea. The concentrations of multiple elements and the strontium 87 Sr/ 86 Sr isotopic ratio in the otoliths were analysed using single- and multi-collector laser ablation inductively coupled plasma mass spectrometry, respectively. Based on the otolith elemental variables, parr could be reclassified to the sampled nursery areas using discriminant function analysis and random forest with a success rate of 53.3% and 63.3%, respectively. However, for parr sampled at the uppermost nursery area in the river, the success rates were 90% and 100%, respectively. Applying the classification models trained on the parr samples to determine which nursery area sampled smolt originated from was constrained by the limited sampling of parr, both in sample sizes and the coverage of the nursery areas found in the river. Article in Journal/Newspaper Atlantic salmon Directory of Open Access Journals: DOAJ Articles Simojoki ENVELOPE(25.050,25.050,65.617,65.617) Fishes 8 6 332 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
otolith salmon random forests discriminant function analysis Biology (General) QH301-705.5 Genetics QH426-470 |
spellingShingle |
otolith salmon random forests discriminant function analysis Biology (General) QH301-705.5 Genetics QH426-470 Viktor Finnäs Erkki Jokikokko Jan-Olof Lill Yann Lahaye Henry Hägerstrand Kai Lindström Potential of Otolith Microchemistry to Distinguish Nursery Areas of Salmon within River Simojoki |
topic_facet |
otolith salmon random forests discriminant function analysis Biology (General) QH301-705.5 Genetics QH426-470 |
description |
Draining into the northern Baltic Sea, River Simojoki is an important spawning river for Atlantic salmon. The present study aimed to preliminary explore the potential of analysing the elemental composition of otoliths to distinguish the within-river nursery area of origin for salmon. Parr were sampled at three nursery areas in the river and smolts of unknown origin were sampled near the river mouth during the migration to the sea. The concentrations of multiple elements and the strontium 87 Sr/ 86 Sr isotopic ratio in the otoliths were analysed using single- and multi-collector laser ablation inductively coupled plasma mass spectrometry, respectively. Based on the otolith elemental variables, parr could be reclassified to the sampled nursery areas using discriminant function analysis and random forest with a success rate of 53.3% and 63.3%, respectively. However, for parr sampled at the uppermost nursery area in the river, the success rates were 90% and 100%, respectively. Applying the classification models trained on the parr samples to determine which nursery area sampled smolt originated from was constrained by the limited sampling of parr, both in sample sizes and the coverage of the nursery areas found in the river. |
format |
Article in Journal/Newspaper |
author |
Viktor Finnäs Erkki Jokikokko Jan-Olof Lill Yann Lahaye Henry Hägerstrand Kai Lindström |
author_facet |
Viktor Finnäs Erkki Jokikokko Jan-Olof Lill Yann Lahaye Henry Hägerstrand Kai Lindström |
author_sort |
Viktor Finnäs |
title |
Potential of Otolith Microchemistry to Distinguish Nursery Areas of Salmon within River Simojoki |
title_short |
Potential of Otolith Microchemistry to Distinguish Nursery Areas of Salmon within River Simojoki |
title_full |
Potential of Otolith Microchemistry to Distinguish Nursery Areas of Salmon within River Simojoki |
title_fullStr |
Potential of Otolith Microchemistry to Distinguish Nursery Areas of Salmon within River Simojoki |
title_full_unstemmed |
Potential of Otolith Microchemistry to Distinguish Nursery Areas of Salmon within River Simojoki |
title_sort |
potential of otolith microchemistry to distinguish nursery areas of salmon within river simojoki |
publisher |
MDPI AG |
publishDate |
2023 |
url |
https://doi.org/10.3390/fishes8060332 https://doaj.org/article/b346a752323c45b89c3ed94723ef2ed2 |
long_lat |
ENVELOPE(25.050,25.050,65.617,65.617) |
geographic |
Simojoki |
geographic_facet |
Simojoki |
genre |
Atlantic salmon |
genre_facet |
Atlantic salmon |
op_source |
Fishes, Vol 8, Iss 332, p 332 (2023) |
op_relation |
https://www.mdpi.com/2410-3888/8/6/332 https://doaj.org/toc/2410-3888 doi:10.3390/fishes8060332 2410-3888 https://doaj.org/article/b346a752323c45b89c3ed94723ef2ed2 |
op_doi |
https://doi.org/10.3390/fishes8060332 |
container_title |
Fishes |
container_volume |
8 |
container_issue |
6 |
container_start_page |
332 |
_version_ |
1772180688285466624 |