Density-Dependent Juvenile Mortality in Marine Demersal Fish
We examine the hypothesis that population variability is created and regulated in the juvenile stage for demersal marine fish. Juvenile mortality is examined for 17 populations of Atlantic cod (Gadus morhua), haddock (Melanogrammus aeglefinus), whiting (Merlangius merlangus), plaice (Pleuronectes pl...
Published in: | Canadian Journal of Fisheries and Aquatic Sciences |
---|---|
Main Authors: | , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Canadian Science Publishing
1993
|
Subjects: | |
Online Access: | http://dx.doi.org/10.1139/f93-179 http://www.nrcresearchpress.com/doi/pdf/10.1139/f93-179 |
id |
crcansciencepubl:10.1139/f93-179 |
---|---|
record_format |
openpolar |
spelling |
crcansciencepubl:10.1139/f93-179 2024-09-30T14:32:11+00:00 Density-Dependent Juvenile Mortality in Marine Demersal Fish Myers, Ransom A. Cadigan, Noel G. 1993 http://dx.doi.org/10.1139/f93-179 http://www.nrcresearchpress.com/doi/pdf/10.1139/f93-179 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Fisheries and Aquatic Sciences volume 50, issue 8, page 1576-1590 ISSN 0706-652X 1205-7533 journal-article 1993 crcansciencepubl https://doi.org/10.1139/f93-179 2024-09-05T04:11:14Z We examine the hypothesis that population variability is created and regulated in the juvenile stage for demersal marine fish. Juvenile mortality is examined for 17 populations of Atlantic cod (Gadus morhua), haddock (Melanogrammus aeglefinus), whiting (Merlangius merlangus), plaice (Pleuronectes platessa), yellowtail flounder (Pleuronectes ferrugineus), and sole (Solea vulgaris) in the North Sea, Irish Sea, Barents Sea, Baltic Sea, and Northwest Atlantic. A latent variable covariance analysis of recruitment time series with measurement error is used to test hypotheses. We found strong evidence of density-dependent mortality within cohorts during the juvenile stage for cod, plaice, sole, and whiting; density-dependent mortality appears to be related to the log of juvenile abundance. There is evidence of negative autocorrelation between adjacent cohorts of cod; this pattern is consistent with density-dependent mortality between adjacent cohorts. The autocorrelations are positive for the flatfish examined. It is possible to obtain estimates of estimation error variances for populations if there are multiple research surveys of the same population. We conclude that the juvenile stage is very important for population regulation in most species but that the source of the variability in year class strength is in the larval stage or very early juvenile stage. Article in Journal/Newspaper atlantic cod Barents Sea Gadus morhua Northwest Atlantic Canadian Science Publishing Barents Sea Canadian Journal of Fisheries and Aquatic Sciences 50 8 1576 1590 |
institution |
Open Polar |
collection |
Canadian Science Publishing |
op_collection_id |
crcansciencepubl |
language |
English |
description |
We examine the hypothesis that population variability is created and regulated in the juvenile stage for demersal marine fish. Juvenile mortality is examined for 17 populations of Atlantic cod (Gadus morhua), haddock (Melanogrammus aeglefinus), whiting (Merlangius merlangus), plaice (Pleuronectes platessa), yellowtail flounder (Pleuronectes ferrugineus), and sole (Solea vulgaris) in the North Sea, Irish Sea, Barents Sea, Baltic Sea, and Northwest Atlantic. A latent variable covariance analysis of recruitment time series with measurement error is used to test hypotheses. We found strong evidence of density-dependent mortality within cohorts during the juvenile stage for cod, plaice, sole, and whiting; density-dependent mortality appears to be related to the log of juvenile abundance. There is evidence of negative autocorrelation between adjacent cohorts of cod; this pattern is consistent with density-dependent mortality between adjacent cohorts. The autocorrelations are positive for the flatfish examined. It is possible to obtain estimates of estimation error variances for populations if there are multiple research surveys of the same population. We conclude that the juvenile stage is very important for population regulation in most species but that the source of the variability in year class strength is in the larval stage or very early juvenile stage. |
format |
Article in Journal/Newspaper |
author |
Myers, Ransom A. Cadigan, Noel G. |
spellingShingle |
Myers, Ransom A. Cadigan, Noel G. Density-Dependent Juvenile Mortality in Marine Demersal Fish |
author_facet |
Myers, Ransom A. Cadigan, Noel G. |
author_sort |
Myers, Ransom A. |
title |
Density-Dependent Juvenile Mortality in Marine Demersal Fish |
title_short |
Density-Dependent Juvenile Mortality in Marine Demersal Fish |
title_full |
Density-Dependent Juvenile Mortality in Marine Demersal Fish |
title_fullStr |
Density-Dependent Juvenile Mortality in Marine Demersal Fish |
title_full_unstemmed |
Density-Dependent Juvenile Mortality in Marine Demersal Fish |
title_sort |
density-dependent juvenile mortality in marine demersal fish |
publisher |
Canadian Science Publishing |
publishDate |
1993 |
url |
http://dx.doi.org/10.1139/f93-179 http://www.nrcresearchpress.com/doi/pdf/10.1139/f93-179 |
geographic |
Barents Sea |
geographic_facet |
Barents Sea |
genre |
atlantic cod Barents Sea Gadus morhua Northwest Atlantic |
genre_facet |
atlantic cod Barents Sea Gadus morhua Northwest Atlantic |
op_source |
Canadian Journal of Fisheries and Aquatic Sciences volume 50, issue 8, page 1576-1590 ISSN 0706-652X 1205-7533 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/f93-179 |
container_title |
Canadian Journal of Fisheries and Aquatic Sciences |
container_volume |
50 |
container_issue |
8 |
container_start_page |
1576 |
op_container_end_page |
1590 |
_version_ |
1811636409259261952 |