Factors regulating early life history dispersal of Atlantic cod (Gadus morhua) from coastal Newfoundland.
To understand coastal dispersal dynamics of Atlantic cod (Gadus morhua), we examined spatiotemporal egg and larval abundance patterns in coastal Newfoundland. In recent decades, Smith Sound, Trinity Bay has supported the largest known overwintering spawning aggregation of Atlantic cod in the region....
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ftdoajarticles:oai:doaj.org/article:d6c11942890b49d1832bd075c0d52f75 2023-05-15T15:26:59+02:00 Factors regulating early life history dispersal of Atlantic cod (Gadus morhua) from coastal Newfoundland. Ryan R E Stanley Brad deYoung Paul V R Snelgrove Robert S Gregory 2013-01-01T00:00:00Z https://doi.org/10.1371/journal.pone.0075889 https://doaj.org/article/d6c11942890b49d1832bd075c0d52f75 EN eng Public Library of Science (PLoS) http://europepmc.org/articles/PMC3776752?pdf=render https://doaj.org/toc/1932-6203 1932-6203 doi:10.1371/journal.pone.0075889 https://doaj.org/article/d6c11942890b49d1832bd075c0d52f75 PLoS ONE, Vol 8, Iss 9, p e75889 (2013) Medicine R Science Q article 2013 ftdoajarticles https://doi.org/10.1371/journal.pone.0075889 2022-12-31T01:54:38Z To understand coastal dispersal dynamics of Atlantic cod (Gadus morhua), we examined spatiotemporal egg and larval abundance patterns in coastal Newfoundland. In recent decades, Smith Sound, Trinity Bay has supported the largest known overwintering spawning aggregation of Atlantic cod in the region. We estimated spawning and dispersal characteristics for the Smith Sound-Trinity Bay system by fitting ichthyoplankton abundance data to environmentally-driven, simplified box models. Results show protracted spawning, with sharply increased egg production in early July, and limited dispersal from the Sound. The model for the entire spawning season indicates egg export from Smith Sound is 13%•day(-1) with a net mortality of 27%•day(-1). Eggs and larvae are consistently found in western Trinity Bay with little advection from the system. These patterns mirror particle tracking models that suggest residence times of 10-20 days, and circulation models indicating local gyres in Trinity Bay that act in concert with upwelling dynamics to retain eggs and larvae. Our results are among the first quantitative dispersal estimates from Smith Sound, linking this spawning stock to the adjacent coastal waters. These results illustrate the biophysical interplay regulating dispersal and connectivity originating from inshore spawning of coastal northwest Atlantic. Article in Journal/Newspaper atlantic cod Gadus morhua Newfoundland Northwest Atlantic Smith sound Directory of Open Access Journals: DOAJ Articles Smith Sound ENVELOPE(-73.996,-73.996,78.419,78.419) PLoS ONE 8 9 e75889 |
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Open Polar |
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Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Medicine R Science Q |
spellingShingle |
Medicine R Science Q Ryan R E Stanley Brad deYoung Paul V R Snelgrove Robert S Gregory Factors regulating early life history dispersal of Atlantic cod (Gadus morhua) from coastal Newfoundland. |
topic_facet |
Medicine R Science Q |
description |
To understand coastal dispersal dynamics of Atlantic cod (Gadus morhua), we examined spatiotemporal egg and larval abundance patterns in coastal Newfoundland. In recent decades, Smith Sound, Trinity Bay has supported the largest known overwintering spawning aggregation of Atlantic cod in the region. We estimated spawning and dispersal characteristics for the Smith Sound-Trinity Bay system by fitting ichthyoplankton abundance data to environmentally-driven, simplified box models. Results show protracted spawning, with sharply increased egg production in early July, and limited dispersal from the Sound. The model for the entire spawning season indicates egg export from Smith Sound is 13%•day(-1) with a net mortality of 27%•day(-1). Eggs and larvae are consistently found in western Trinity Bay with little advection from the system. These patterns mirror particle tracking models that suggest residence times of 10-20 days, and circulation models indicating local gyres in Trinity Bay that act in concert with upwelling dynamics to retain eggs and larvae. Our results are among the first quantitative dispersal estimates from Smith Sound, linking this spawning stock to the adjacent coastal waters. These results illustrate the biophysical interplay regulating dispersal and connectivity originating from inshore spawning of coastal northwest Atlantic. |
format |
Article in Journal/Newspaper |
author |
Ryan R E Stanley Brad deYoung Paul V R Snelgrove Robert S Gregory |
author_facet |
Ryan R E Stanley Brad deYoung Paul V R Snelgrove Robert S Gregory |
author_sort |
Ryan R E Stanley |
title |
Factors regulating early life history dispersal of Atlantic cod (Gadus morhua) from coastal Newfoundland. |
title_short |
Factors regulating early life history dispersal of Atlantic cod (Gadus morhua) from coastal Newfoundland. |
title_full |
Factors regulating early life history dispersal of Atlantic cod (Gadus morhua) from coastal Newfoundland. |
title_fullStr |
Factors regulating early life history dispersal of Atlantic cod (Gadus morhua) from coastal Newfoundland. |
title_full_unstemmed |
Factors regulating early life history dispersal of Atlantic cod (Gadus morhua) from coastal Newfoundland. |
title_sort |
factors regulating early life history dispersal of atlantic cod (gadus morhua) from coastal newfoundland. |
publisher |
Public Library of Science (PLoS) |
publishDate |
2013 |
url |
https://doi.org/10.1371/journal.pone.0075889 https://doaj.org/article/d6c11942890b49d1832bd075c0d52f75 |
long_lat |
ENVELOPE(-73.996,-73.996,78.419,78.419) |
geographic |
Smith Sound |
geographic_facet |
Smith Sound |
genre |
atlantic cod Gadus morhua Newfoundland Northwest Atlantic Smith sound |
genre_facet |
atlantic cod Gadus morhua Newfoundland Northwest Atlantic Smith sound |
op_source |
PLoS ONE, Vol 8, Iss 9, p e75889 (2013) |
op_relation |
http://europepmc.org/articles/PMC3776752?pdf=render https://doaj.org/toc/1932-6203 1932-6203 doi:10.1371/journal.pone.0075889 https://doaj.org/article/d6c11942890b49d1832bd075c0d52f75 |
op_doi |
https://doi.org/10.1371/journal.pone.0075889 |
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PLoS ONE |
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8 |
container_issue |
9 |
container_start_page |
e75889 |
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