Periodic fluctuations in recruitment success of Atlantic cod
Autocorrelation in recruitment success of fish is frequently reported, but the underlying mechanisms are generally only vaguely alluded to. We analysed recruitment success of 21 cod (Gadus morhua) stocks in the North Atlantic to investigate possible common causes of autocorrelation in recruitment. W...
Published in: | Canadian Journal of Fisheries and Aquatic Sciences |
---|---|
Main Authors: | , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Canadian Science Publishing
2020
|
Subjects: | |
Online Access: | http://dx.doi.org/10.1139/cjfas-2018-0496 http://www.nrcresearchpress.com/doi/full-xml/10.1139/cjfas-2018-0496 http://www.nrcresearchpress.com/doi/pdf/10.1139/cjfas-2018-0496 |
id |
crcansciencepubl:10.1139/cjfas-2018-0496 |
---|---|
record_format |
openpolar |
spelling |
crcansciencepubl:10.1139/cjfas-2018-0496 2024-04-28T08:13:01+00:00 Periodic fluctuations in recruitment success of Atlantic cod Rindorf, Anna Cadigan, Noel Howell, Daniel Eero, Margit Gislason, Henrik 2020 http://dx.doi.org/10.1139/cjfas-2018-0496 http://www.nrcresearchpress.com/doi/full-xml/10.1139/cjfas-2018-0496 http://www.nrcresearchpress.com/doi/pdf/10.1139/cjfas-2018-0496 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Fisheries and Aquatic Sciences volume 77, issue 2, page 236-246 ISSN 0706-652X 1205-7533 Aquatic Science Ecology, Evolution, Behavior and Systematics journal-article 2020 crcansciencepubl https://doi.org/10.1139/cjfas-2018-0496 2024-04-02T06:55:55Z Autocorrelation in recruitment success of fish is frequently reported, but the underlying mechanisms are generally only vaguely alluded to. We analysed recruitment success of 21 cod (Gadus morhua) stocks in the North Atlantic to investigate possible common causes of autocorrelation in recruitment. We found autocorrelation and periodic fluctuations in recruitment success and adult growth in just above half of the stocks considered and investigated six possible underlying mechanisms. With three exceptions, the variations in recruitment success were not significantly related to temperature or growth anomalies, indicating that the variation was not caused by temperature-dependent survival or growth-dependent spawning products. Further, a link between recruitment and subsequent spawning biomass could not explain the observed recruitment patterns. Slow-growing cod stocks tended to exhibit longer cycles and positive autocorrelations consistent with dilution of predation mortality by adjacent large year classes or age reading errors, whereas fast-growing cod stocks showed shorter cycles and no significant autocorrelation at lag 1. Both types exhibited significant negative autocorrelations consistent with cannibalism at one or more lags greater than lag 1. Article in Journal/Newspaper atlantic cod Gadus morhua North Atlantic Canadian Science Publishing Canadian Journal of Fisheries and Aquatic Sciences 77 2 236 246 |
institution |
Open Polar |
collection |
Canadian Science Publishing |
op_collection_id |
crcansciencepubl |
language |
English |
topic |
Aquatic Science Ecology, Evolution, Behavior and Systematics |
spellingShingle |
Aquatic Science Ecology, Evolution, Behavior and Systematics Rindorf, Anna Cadigan, Noel Howell, Daniel Eero, Margit Gislason, Henrik Periodic fluctuations in recruitment success of Atlantic cod |
topic_facet |
Aquatic Science Ecology, Evolution, Behavior and Systematics |
description |
Autocorrelation in recruitment success of fish is frequently reported, but the underlying mechanisms are generally only vaguely alluded to. We analysed recruitment success of 21 cod (Gadus morhua) stocks in the North Atlantic to investigate possible common causes of autocorrelation in recruitment. We found autocorrelation and periodic fluctuations in recruitment success and adult growth in just above half of the stocks considered and investigated six possible underlying mechanisms. With three exceptions, the variations in recruitment success were not significantly related to temperature or growth anomalies, indicating that the variation was not caused by temperature-dependent survival or growth-dependent spawning products. Further, a link between recruitment and subsequent spawning biomass could not explain the observed recruitment patterns. Slow-growing cod stocks tended to exhibit longer cycles and positive autocorrelations consistent with dilution of predation mortality by adjacent large year classes or age reading errors, whereas fast-growing cod stocks showed shorter cycles and no significant autocorrelation at lag 1. Both types exhibited significant negative autocorrelations consistent with cannibalism at one or more lags greater than lag 1. |
format |
Article in Journal/Newspaper |
author |
Rindorf, Anna Cadigan, Noel Howell, Daniel Eero, Margit Gislason, Henrik |
author_facet |
Rindorf, Anna Cadigan, Noel Howell, Daniel Eero, Margit Gislason, Henrik |
author_sort |
Rindorf, Anna |
title |
Periodic fluctuations in recruitment success of Atlantic cod |
title_short |
Periodic fluctuations in recruitment success of Atlantic cod |
title_full |
Periodic fluctuations in recruitment success of Atlantic cod |
title_fullStr |
Periodic fluctuations in recruitment success of Atlantic cod |
title_full_unstemmed |
Periodic fluctuations in recruitment success of Atlantic cod |
title_sort |
periodic fluctuations in recruitment success of atlantic cod |
publisher |
Canadian Science Publishing |
publishDate |
2020 |
url |
http://dx.doi.org/10.1139/cjfas-2018-0496 http://www.nrcresearchpress.com/doi/full-xml/10.1139/cjfas-2018-0496 http://www.nrcresearchpress.com/doi/pdf/10.1139/cjfas-2018-0496 |
genre |
atlantic cod Gadus morhua North Atlantic |
genre_facet |
atlantic cod Gadus morhua North Atlantic |
op_source |
Canadian Journal of Fisheries and Aquatic Sciences volume 77, issue 2, page 236-246 ISSN 0706-652X 1205-7533 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/cjfas-2018-0496 |
container_title |
Canadian Journal of Fisheries and Aquatic Sciences |
container_volume |
77 |
container_issue |
2 |
container_start_page |
236 |
op_container_end_page |
246 |
_version_ |
1797579687529021440 |