Disparate movement behaviour and feeding ecology in sympatric ecotypes of Atlantic cod ...
Co-existence of ecotypes, genetically divergent population units, is a widespread phenomenon, potentially affecting ecosystem functioning and local food web stability. In coastal Skagerrak, Atlantic cod (Gadus morhua) occur as two such co-existing ecotypes. We applied a combination of acoustic telem...
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ftdatacite:10.5061/dryad.5hqbzkh63 2023-12-31T10:04:33+01:00 Disparate movement behaviour and feeding ecology in sympatric ecotypes of Atlantic cod ... Kristensen, Martin Lykke 2021 https://dx.doi.org/10.5061/dryad.5hqbzkh63 https://datadryad.org/stash/dataset/doi:10.5061/dryad.5hqbzkh63 en eng Dryad Creative Commons Zero v1.0 Universal https://creativecommons.org/publicdomain/zero/1.0/legalcode cc0-1.0 Dataset dataset 2021 ftdatacite https://doi.org/10.5061/dryad.5hqbzkh63 2023-12-01T12:06:09Z Co-existence of ecotypes, genetically divergent population units, is a widespread phenomenon, potentially affecting ecosystem functioning and local food web stability. In coastal Skagerrak, Atlantic cod (Gadus morhua) occur as two such co-existing ecotypes. We applied a combination of acoustic telemetry, genotyping and stable isotope analysis to 72 individuals to investigate movement ecology and food niche of putative local “Fjord” and putative oceanic “North Sea” ecotypes – thus named based on previous molecular studies. Genotyping and individual origin assignment suggested 41 individuals were Fjord and 31 were North Sea ecotypes. Both ecotypes were found throughout the fjord. Seven percent of Fjord ecotype individuals left the study system during the study while 42 % of North Sea individuals left, potentially homing to natal spawning grounds. Home range sizes were similar for the two ecotypes but highly variable among individuals. Fjord ecotype cod had significantly higher δ13C and δ15N stable isotope ... : Acoustic receivers were deployed in Sandnesfjorden, Norway. Atlantic cod were caught in the fjord, a fin clip was taken for genetic origin assignment and a small muscle tissue sample was taken for stable isotope analysis. The fish were tagged with acoustic tags and their behaviour in the fjord was tracked. ... Dataset atlantic cod Gadus morhua DataCite Metadata Store (German National Library of Science and Technology) |
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Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
English |
description |
Co-existence of ecotypes, genetically divergent population units, is a widespread phenomenon, potentially affecting ecosystem functioning and local food web stability. In coastal Skagerrak, Atlantic cod (Gadus morhua) occur as two such co-existing ecotypes. We applied a combination of acoustic telemetry, genotyping and stable isotope analysis to 72 individuals to investigate movement ecology and food niche of putative local “Fjord” and putative oceanic “North Sea” ecotypes – thus named based on previous molecular studies. Genotyping and individual origin assignment suggested 41 individuals were Fjord and 31 were North Sea ecotypes. Both ecotypes were found throughout the fjord. Seven percent of Fjord ecotype individuals left the study system during the study while 42 % of North Sea individuals left, potentially homing to natal spawning grounds. Home range sizes were similar for the two ecotypes but highly variable among individuals. Fjord ecotype cod had significantly higher δ13C and δ15N stable isotope ... : Acoustic receivers were deployed in Sandnesfjorden, Norway. Atlantic cod were caught in the fjord, a fin clip was taken for genetic origin assignment and a small muscle tissue sample was taken for stable isotope analysis. The fish were tagged with acoustic tags and their behaviour in the fjord was tracked. ... |
format |
Dataset |
author |
Kristensen, Martin Lykke |
spellingShingle |
Kristensen, Martin Lykke Disparate movement behaviour and feeding ecology in sympatric ecotypes of Atlantic cod ... |
author_facet |
Kristensen, Martin Lykke |
author_sort |
Kristensen, Martin Lykke |
title |
Disparate movement behaviour and feeding ecology in sympatric ecotypes of Atlantic cod ... |
title_short |
Disparate movement behaviour and feeding ecology in sympatric ecotypes of Atlantic cod ... |
title_full |
Disparate movement behaviour and feeding ecology in sympatric ecotypes of Atlantic cod ... |
title_fullStr |
Disparate movement behaviour and feeding ecology in sympatric ecotypes of Atlantic cod ... |
title_full_unstemmed |
Disparate movement behaviour and feeding ecology in sympatric ecotypes of Atlantic cod ... |
title_sort |
disparate movement behaviour and feeding ecology in sympatric ecotypes of atlantic cod ... |
publisher |
Dryad |
publishDate |
2021 |
url |
https://dx.doi.org/10.5061/dryad.5hqbzkh63 https://datadryad.org/stash/dataset/doi:10.5061/dryad.5hqbzkh63 |
genre |
atlantic cod Gadus morhua |
genre_facet |
atlantic cod Gadus morhua |
op_rights |
Creative Commons Zero v1.0 Universal https://creativecommons.org/publicdomain/zero/1.0/legalcode cc0-1.0 |
op_doi |
https://doi.org/10.5061/dryad.5hqbzkh63 |
_version_ |
1786834438960709632 |