Temperature and prey quality effects on growth of juvenile walleye pollock Theragra chalcogramma (Pallas): a spatially explicit bioenergetics approach
A bioenergetics model for juvenile age‐0 year walleye pollock Theragra chalcogramma was applied to a spatially distinct grid of samples in the western Gulf of Alaska to investigate the influence of temperature and prey quality on size‐specific growth. Daily growth estimates for 50, 70 and 90 mm stan...
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Online Access: | http://dx.doi.org/10.1111/j.1095-8649.2007.01344.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1095-8649.2007.01344.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1095-8649.2007.01344.x |
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crwiley:10.1111/j.1095-8649.2007.01344.x 2024-06-02T08:15:15+00:00 Temperature and prey quality effects on growth of juvenile walleye pollock Theragra chalcogramma (Pallas): a spatially explicit bioenergetics approach Mazur, M. M. Wilson, M. T. Dougherty, A. B. Buchheister, A. Beauchamp, D. A. 2007 http://dx.doi.org/10.1111/j.1095-8649.2007.01344.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1095-8649.2007.01344.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1095-8649.2007.01344.x en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Journal of Fish Biology volume 70, issue 3, page 816-836 ISSN 0022-1112 1095-8649 journal-article 2007 crwiley https://doi.org/10.1111/j.1095-8649.2007.01344.x 2024-05-03T10:35:26Z A bioenergetics model for juvenile age‐0 year walleye pollock Theragra chalcogramma was applied to a spatially distinct grid of samples in the western Gulf of Alaska to investigate the influence of temperature and prey quality on size‐specific growth. Daily growth estimates for 50, 70 and 90 mm standard length ( L S ) walleye pollock during September 2000 were generated using the bioenergetics model with a fixed ration size. Similarities in independent estimates of prey consumption generated from the bioenergetics model and a gastric evacuation model corroborated the performance of the bioenergetics model, concordance correlation ( r c ) = 0·945, lower 95% CL (transformed) ( L 1 ) = 0·834, upper 95% CL (transformed) ( L 2 ) = 0·982, P < 0·001. A mean squared error analysis ( M SE ) was also used to partition the sources of error between both model estimates of consumption into a mean component ( M C ), slope component ( S C ), and random component ( R C ). Differences between estimates of daily consumption were largely due to differences in the means of estimates ( M C = 0·45) and random sources ( R C = 0·49) of error, and not differences in slopes ( S C = 0·06). Similarly, daily growth estimates of 0·031–0·167 g day −1 generated from the bioenergetics model was within the range of growth estimates of 0·026–0·190 g day −1 obtained from otolith analysis of juvenile walleye pollock. Temperature and prey quality alone accounted for 66% of the observed variation between bioenergetics and otolith growth estimates across all sizes of juvenile walleye pollock. These results suggest that the bioenergetics model for juvenile walleye pollock is a useful tool for evaluating the influence of spatially variable habitat conditions on the growth potential of juvenile walleye pollock. Article in Journal/Newspaper Theragra chalcogramma Alaska Wiley Online Library Gulf of Alaska Journal of Fish Biology 70 3 816 836 |
institution |
Open Polar |
collection |
Wiley Online Library |
op_collection_id |
crwiley |
language |
English |
description |
A bioenergetics model for juvenile age‐0 year walleye pollock Theragra chalcogramma was applied to a spatially distinct grid of samples in the western Gulf of Alaska to investigate the influence of temperature and prey quality on size‐specific growth. Daily growth estimates for 50, 70 and 90 mm standard length ( L S ) walleye pollock during September 2000 were generated using the bioenergetics model with a fixed ration size. Similarities in independent estimates of prey consumption generated from the bioenergetics model and a gastric evacuation model corroborated the performance of the bioenergetics model, concordance correlation ( r c ) = 0·945, lower 95% CL (transformed) ( L 1 ) = 0·834, upper 95% CL (transformed) ( L 2 ) = 0·982, P < 0·001. A mean squared error analysis ( M SE ) was also used to partition the sources of error between both model estimates of consumption into a mean component ( M C ), slope component ( S C ), and random component ( R C ). Differences between estimates of daily consumption were largely due to differences in the means of estimates ( M C = 0·45) and random sources ( R C = 0·49) of error, and not differences in slopes ( S C = 0·06). Similarly, daily growth estimates of 0·031–0·167 g day −1 generated from the bioenergetics model was within the range of growth estimates of 0·026–0·190 g day −1 obtained from otolith analysis of juvenile walleye pollock. Temperature and prey quality alone accounted for 66% of the observed variation between bioenergetics and otolith growth estimates across all sizes of juvenile walleye pollock. These results suggest that the bioenergetics model for juvenile walleye pollock is a useful tool for evaluating the influence of spatially variable habitat conditions on the growth potential of juvenile walleye pollock. |
format |
Article in Journal/Newspaper |
author |
Mazur, M. M. Wilson, M. T. Dougherty, A. B. Buchheister, A. Beauchamp, D. A. |
spellingShingle |
Mazur, M. M. Wilson, M. T. Dougherty, A. B. Buchheister, A. Beauchamp, D. A. Temperature and prey quality effects on growth of juvenile walleye pollock Theragra chalcogramma (Pallas): a spatially explicit bioenergetics approach |
author_facet |
Mazur, M. M. Wilson, M. T. Dougherty, A. B. Buchheister, A. Beauchamp, D. A. |
author_sort |
Mazur, M. M. |
title |
Temperature and prey quality effects on growth of juvenile walleye pollock Theragra chalcogramma (Pallas): a spatially explicit bioenergetics approach |
title_short |
Temperature and prey quality effects on growth of juvenile walleye pollock Theragra chalcogramma (Pallas): a spatially explicit bioenergetics approach |
title_full |
Temperature and prey quality effects on growth of juvenile walleye pollock Theragra chalcogramma (Pallas): a spatially explicit bioenergetics approach |
title_fullStr |
Temperature and prey quality effects on growth of juvenile walleye pollock Theragra chalcogramma (Pallas): a spatially explicit bioenergetics approach |
title_full_unstemmed |
Temperature and prey quality effects on growth of juvenile walleye pollock Theragra chalcogramma (Pallas): a spatially explicit bioenergetics approach |
title_sort |
temperature and prey quality effects on growth of juvenile walleye pollock theragra chalcogramma (pallas): a spatially explicit bioenergetics approach |
publisher |
Wiley |
publishDate |
2007 |
url |
http://dx.doi.org/10.1111/j.1095-8649.2007.01344.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1095-8649.2007.01344.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1095-8649.2007.01344.x |
geographic |
Gulf of Alaska |
geographic_facet |
Gulf of Alaska |
genre |
Theragra chalcogramma Alaska |
genre_facet |
Theragra chalcogramma Alaska |
op_source |
Journal of Fish Biology volume 70, issue 3, page 816-836 ISSN 0022-1112 1095-8649 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/j.1095-8649.2007.01344.x |
container_title |
Journal of Fish Biology |
container_volume |
70 |
container_issue |
3 |
container_start_page |
816 |
op_container_end_page |
836 |
_version_ |
1800739353845039104 |