Otolith "spawning zones" across multiple Atlantic cod populations: Do they accurately record maturity and spawning?
Specific changes identified in the otolith macrostructure of Northeast Arctic cod as “spawning zones” are presumed to represent spawning events, but recent experimental studies have challenged this relationship. Because these zones are not routinely recorded outside of Norway, otoliths from multiple...
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ftimperialcol:oai:spiral.imperial.ac.uk:10044/1/93806 2023-05-15T14:30:29+02:00 Otolith "spawning zones" across multiple Atlantic cod populations: Do they accurately record maturity and spawning? Denechaud, C Geffen, AJ Smolinski, S Godiksen, JA 2021-08-25 http://hdl.handle.net/10044/1/93806 https://doi.org/10.1371/journal.pone.0257218 English eng Public Library of Science (PLoS) PLoS One 1932-6203 http://hdl.handle.net/10044/1/93806 doi:10.1371/journal.pone.0257218 © 2021 Denechaud et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. http://creativecommons.org/licenses/by/4.0/ CC-BY 23 1 Science & Technology Multidisciplinary Sciences Science & Technology - Other Topics NORTH-SEA PLAICE GADUS-MORHUA SEXUAL MATURITY FISH OTOLITHS EGG SIZE GROWTH AGE REPRODUCTION MATURATION EVOLUTION Animals Atlantic Ocean Gadus morhua Norway General Science & Technology Journal Article 2021 ftimperialcol https://doi.org/10.1371/journal.pone.0257218 2022-01-27T23:41:02Z Specific changes identified in the otolith macrostructure of Northeast Arctic cod as “spawning zones” are presumed to represent spawning events, but recent experimental studies have challenged this relationship. Because these zones are not routinely recorded outside of Norway, otoliths from multiple Atlantic cod populations with different life history and environmental traits were first examined to see if spawning zones could be identified as a general characteristic of cod. Then, a large archival collection of cod otoliths was used to investigate temporal changes in the occurrence of spawning zones and test for correlations between maturity at age derived from otolith spawning zones and gonad maturity stages. This study shows that spawning zones likely are a universal trait of Atlantic cod and not limited to certain environments or migratory behaviors as previously proposed. Maturity at age derived from spawning zone data showed trends consistent with those from gonad examinations. However, spawning zones appear to form with a one- or two-year lag with sexual maturity, which is suspected to reflect a stabilizing of energy partitioning after the first spawning events. Our results illustrate the potential for use of spawning zones, for example in species or populations with limited available maturity data, and highlights the need for addressing the physiological processes behind their formation. Article in Journal/Newspaper Arctic cod Arctic atlantic cod Gadus morhua Northeast Arctic cod Imperial College London: Spiral Arctic Norway PLOS ONE 16 9 e0257218 |
institution |
Open Polar |
collection |
Imperial College London: Spiral |
op_collection_id |
ftimperialcol |
language |
English |
topic |
Science & Technology Multidisciplinary Sciences Science & Technology - Other Topics NORTH-SEA PLAICE GADUS-MORHUA SEXUAL MATURITY FISH OTOLITHS EGG SIZE GROWTH AGE REPRODUCTION MATURATION EVOLUTION Animals Atlantic Ocean Gadus morhua Norway General Science & Technology |
spellingShingle |
Science & Technology Multidisciplinary Sciences Science & Technology - Other Topics NORTH-SEA PLAICE GADUS-MORHUA SEXUAL MATURITY FISH OTOLITHS EGG SIZE GROWTH AGE REPRODUCTION MATURATION EVOLUTION Animals Atlantic Ocean Gadus morhua Norway General Science & Technology Denechaud, C Geffen, AJ Smolinski, S Godiksen, JA Otolith "spawning zones" across multiple Atlantic cod populations: Do they accurately record maturity and spawning? |
topic_facet |
Science & Technology Multidisciplinary Sciences Science & Technology - Other Topics NORTH-SEA PLAICE GADUS-MORHUA SEXUAL MATURITY FISH OTOLITHS EGG SIZE GROWTH AGE REPRODUCTION MATURATION EVOLUTION Animals Atlantic Ocean Gadus morhua Norway General Science & Technology |
description |
Specific changes identified in the otolith macrostructure of Northeast Arctic cod as “spawning zones” are presumed to represent spawning events, but recent experimental studies have challenged this relationship. Because these zones are not routinely recorded outside of Norway, otoliths from multiple Atlantic cod populations with different life history and environmental traits were first examined to see if spawning zones could be identified as a general characteristic of cod. Then, a large archival collection of cod otoliths was used to investigate temporal changes in the occurrence of spawning zones and test for correlations between maturity at age derived from otolith spawning zones and gonad maturity stages. This study shows that spawning zones likely are a universal trait of Atlantic cod and not limited to certain environments or migratory behaviors as previously proposed. Maturity at age derived from spawning zone data showed trends consistent with those from gonad examinations. However, spawning zones appear to form with a one- or two-year lag with sexual maturity, which is suspected to reflect a stabilizing of energy partitioning after the first spawning events. Our results illustrate the potential for use of spawning zones, for example in species or populations with limited available maturity data, and highlights the need for addressing the physiological processes behind their formation. |
format |
Article in Journal/Newspaper |
author |
Denechaud, C Geffen, AJ Smolinski, S Godiksen, JA |
author_facet |
Denechaud, C Geffen, AJ Smolinski, S Godiksen, JA |
author_sort |
Denechaud, C |
title |
Otolith "spawning zones" across multiple Atlantic cod populations: Do they accurately record maturity and spawning? |
title_short |
Otolith "spawning zones" across multiple Atlantic cod populations: Do they accurately record maturity and spawning? |
title_full |
Otolith "spawning zones" across multiple Atlantic cod populations: Do they accurately record maturity and spawning? |
title_fullStr |
Otolith "spawning zones" across multiple Atlantic cod populations: Do they accurately record maturity and spawning? |
title_full_unstemmed |
Otolith "spawning zones" across multiple Atlantic cod populations: Do they accurately record maturity and spawning? |
title_sort |
otolith "spawning zones" across multiple atlantic cod populations: do they accurately record maturity and spawning? |
publisher |
Public Library of Science (PLoS) |
publishDate |
2021 |
url |
http://hdl.handle.net/10044/1/93806 https://doi.org/10.1371/journal.pone.0257218 |
geographic |
Arctic Norway |
geographic_facet |
Arctic Norway |
genre |
Arctic cod Arctic atlantic cod Gadus morhua Northeast Arctic cod |
genre_facet |
Arctic cod Arctic atlantic cod Gadus morhua Northeast Arctic cod |
op_source |
23 1 |
op_relation |
PLoS One 1932-6203 http://hdl.handle.net/10044/1/93806 doi:10.1371/journal.pone.0257218 |
op_rights |
© 2021 Denechaud et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. http://creativecommons.org/licenses/by/4.0/ |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1371/journal.pone.0257218 |
container_title |
PLOS ONE |
container_volume |
16 |
container_issue |
9 |
container_start_page |
e0257218 |
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1766304331775082496 |