Assessing the role of ontogenetic movement in maintaining population structure in fish using otolith microchemistry
Abstract Identifying the mechanisms maintaining population structure in marine fish species with more than a single dispersing life stage is challenging because of the difficulty in tracking all life stages. Here, a two‐stage otolith microchemistry approach to examining life‐stage movement was adopt...
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ftdoajarticles:oai:doaj.org/article:8b8577e47eb1494399d912c1d5780113 2023-05-15T15:27:45+02:00 Assessing the role of ontogenetic movement in maintaining population structure in fish using otolith microchemistry Peter J. Wright Thomas Régnier Fiona M. Gibb Julian Augley Sandhya Devalla 2018-08-01T00:00:00Z https://doi.org/10.1002/ece3.4186 https://doaj.org/article/8b8577e47eb1494399d912c1d5780113 EN eng Wiley https://doi.org/10.1002/ece3.4186 https://doaj.org/toc/2045-7758 2045-7758 doi:10.1002/ece3.4186 https://doaj.org/article/8b8577e47eb1494399d912c1d5780113 Ecology and Evolution, Vol 8, Iss 16, Pp 7907-7920 (2018) Atlantic cod marine fish natal homing otolith chemistry philopatry population structure Ecology QH540-549.5 article 2018 ftdoajarticles https://doi.org/10.1002/ece3.4186 2022-12-31T05:41:22Z Abstract Identifying the mechanisms maintaining population structure in marine fish species with more than a single dispersing life stage is challenging because of the difficulty in tracking all life stages. Here, a two‐stage otolith microchemistry approach to examining life‐stage movement was adopted, tracking a year‐class from the juvenile to adult stage and inferring larval sources from clustering, in order to consider the mechanisms maintaining population structuring in North Sea cod. Clustering of near‐core chemistry identified four clusters, two of which had either a southern or northern affinity and were similar to juvenile edge chemistry. The other two clusters, common to the central North Sea, had intermediate chemical composition and may have reflected either larval mixing in this region or a lack of geographic heterogeneity in the elemental signature. From the comparison of whole juvenile and the corresponding component of adult otoliths, adults from the southern North Sea mostly recruited from adjacent nursery grounds. In contrast, many adults in the northern North Sea had a juvenile chemistry consistent with the Skagerrak and juveniles from the northern Skagerrak site had a near‐core chemistry consistent with the northern North Sea. Similarities in otolith chemistry were consistent with retention of early life stages at a regional level and also juvenile and adult fidelity. The links between the northern North Sea and Skagerrak indicate natal homing, which when considered in the context of genetic evidence is suggestive of philopatry. The approach used here should be useful in exploring the mechanisms underlying population structuring in other species with multiple dispersive life stages and calcified hard parts. Article in Journal/Newspaper atlantic cod Directory of Open Access Journals: DOAJ Articles Ecology and Evolution 8 16 7907 7920 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Atlantic cod marine fish natal homing otolith chemistry philopatry population structure Ecology QH540-549.5 |
spellingShingle |
Atlantic cod marine fish natal homing otolith chemistry philopatry population structure Ecology QH540-549.5 Peter J. Wright Thomas Régnier Fiona M. Gibb Julian Augley Sandhya Devalla Assessing the role of ontogenetic movement in maintaining population structure in fish using otolith microchemistry |
topic_facet |
Atlantic cod marine fish natal homing otolith chemistry philopatry population structure Ecology QH540-549.5 |
description |
Abstract Identifying the mechanisms maintaining population structure in marine fish species with more than a single dispersing life stage is challenging because of the difficulty in tracking all life stages. Here, a two‐stage otolith microchemistry approach to examining life‐stage movement was adopted, tracking a year‐class from the juvenile to adult stage and inferring larval sources from clustering, in order to consider the mechanisms maintaining population structuring in North Sea cod. Clustering of near‐core chemistry identified four clusters, two of which had either a southern or northern affinity and were similar to juvenile edge chemistry. The other two clusters, common to the central North Sea, had intermediate chemical composition and may have reflected either larval mixing in this region or a lack of geographic heterogeneity in the elemental signature. From the comparison of whole juvenile and the corresponding component of adult otoliths, adults from the southern North Sea mostly recruited from adjacent nursery grounds. In contrast, many adults in the northern North Sea had a juvenile chemistry consistent with the Skagerrak and juveniles from the northern Skagerrak site had a near‐core chemistry consistent with the northern North Sea. Similarities in otolith chemistry were consistent with retention of early life stages at a regional level and also juvenile and adult fidelity. The links between the northern North Sea and Skagerrak indicate natal homing, which when considered in the context of genetic evidence is suggestive of philopatry. The approach used here should be useful in exploring the mechanisms underlying population structuring in other species with multiple dispersive life stages and calcified hard parts. |
format |
Article in Journal/Newspaper |
author |
Peter J. Wright Thomas Régnier Fiona M. Gibb Julian Augley Sandhya Devalla |
author_facet |
Peter J. Wright Thomas Régnier Fiona M. Gibb Julian Augley Sandhya Devalla |
author_sort |
Peter J. Wright |
title |
Assessing the role of ontogenetic movement in maintaining population structure in fish using otolith microchemistry |
title_short |
Assessing the role of ontogenetic movement in maintaining population structure in fish using otolith microchemistry |
title_full |
Assessing the role of ontogenetic movement in maintaining population structure in fish using otolith microchemistry |
title_fullStr |
Assessing the role of ontogenetic movement in maintaining population structure in fish using otolith microchemistry |
title_full_unstemmed |
Assessing the role of ontogenetic movement in maintaining population structure in fish using otolith microchemistry |
title_sort |
assessing the role of ontogenetic movement in maintaining population structure in fish using otolith microchemistry |
publisher |
Wiley |
publishDate |
2018 |
url |
https://doi.org/10.1002/ece3.4186 https://doaj.org/article/8b8577e47eb1494399d912c1d5780113 |
genre |
atlantic cod |
genre_facet |
atlantic cod |
op_source |
Ecology and Evolution, Vol 8, Iss 16, Pp 7907-7920 (2018) |
op_relation |
https://doi.org/10.1002/ece3.4186 https://doaj.org/toc/2045-7758 2045-7758 doi:10.1002/ece3.4186 https://doaj.org/article/8b8577e47eb1494399d912c1d5780113 |
op_doi |
https://doi.org/10.1002/ece3.4186 |
container_title |
Ecology and Evolution |
container_volume |
8 |
container_issue |
16 |
container_start_page |
7907 |
op_container_end_page |
7920 |
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1766358163846594560 |