Back-calculation of previous fish size using individually tagged and marked Atlantic cod (Gadus morhua)
The performance of five back-calculation (B-C) models was tested with individually tagged and multiple alizarin-marked Atlantic cod ( Gadus morhua ) reared at seasonally varying water temperature and food regimes over a 10-month period. The otoliths were transversely sectioned and the otolith growth...
Published in: | Canadian Journal of Fisheries and Aquatic Sciences |
---|---|
Main Authors: | , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Canadian Science Publishing
2008
|
Subjects: | |
Online Access: | http://dx.doi.org/10.1139/f08-157 http://www.nrcresearchpress.com/doi/full-xml/10.1139/F08-157 http://www.nrcresearchpress.com/doi/pdf/10.1139/F08-157 |
id |
crcansciencepubl:10.1139/f08-157 |
---|---|
record_format |
openpolar |
spelling |
crcansciencepubl:10.1139/f08-157 2023-12-17T10:27:01+01:00 Back-calculation of previous fish size using individually tagged and marked Atlantic cod (Gadus morhua) Li, L. Høie, H. Geffen, A. J. Heegaard, E. Skadal, J. Folkvord, A. 2008 http://dx.doi.org/10.1139/f08-157 http://www.nrcresearchpress.com/doi/full-xml/10.1139/F08-157 http://www.nrcresearchpress.com/doi/pdf/10.1139/F08-157 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Fisheries and Aquatic Sciences volume 65, issue 11, page 2496-2508 ISSN 0706-652X 1205-7533 Aquatic Science Ecology, Evolution, Behavior and Systematics journal-article 2008 crcansciencepubl https://doi.org/10.1139/f08-157 2023-11-19T13:38:44Z The performance of five back-calculation (B-C) models was tested with individually tagged and multiple alizarin-marked Atlantic cod ( Gadus morhua ) reared at seasonally varying water temperature and food regimes over a 10-month period. The otoliths were transversely sectioned and the otolith growth between marks was measured along the dorsal, distal, and ventral radii and across the otolith width. Observed fish lengths at each marking time were compared with back-calculated lengths using linear and nonlinear scale and body proportional hypotheses (SPH and BPH) and biological intercept (BI) models. Measurements along the dorsal and distal radius with SPH and BI provided more accurate fish length estimates but with lower precision, whereas measurements of the ventral radius consistently produced greater overestimations by any model. Otolith width measurements produced moderately overestimated fish length estimates but with the highest precision and were significantly affected by temperature in all models. Certain combinations of model and otolith dimension were more sensitive to the length of the back-calculation time interval, whereas varying feeding regime induced temporary biases only. The selection of B-C model and otolith dimension thus depends not only on the environmental conditions that the fish experience, but also on the requirements of the application for which the B-C is used. Article in Journal/Newspaper atlantic cod Gadus morhua Canadian Science Publishing (via Crossref) Canadian Journal of Fisheries and Aquatic Sciences 65 11 2496 2508 |
institution |
Open Polar |
collection |
Canadian Science Publishing (via Crossref) |
op_collection_id |
crcansciencepubl |
language |
English |
topic |
Aquatic Science Ecology, Evolution, Behavior and Systematics |
spellingShingle |
Aquatic Science Ecology, Evolution, Behavior and Systematics Li, L. Høie, H. Geffen, A. J. Heegaard, E. Skadal, J. Folkvord, A. Back-calculation of previous fish size using individually tagged and marked Atlantic cod (Gadus morhua) |
topic_facet |
Aquatic Science Ecology, Evolution, Behavior and Systematics |
description |
The performance of five back-calculation (B-C) models was tested with individually tagged and multiple alizarin-marked Atlantic cod ( Gadus morhua ) reared at seasonally varying water temperature and food regimes over a 10-month period. The otoliths were transversely sectioned and the otolith growth between marks was measured along the dorsal, distal, and ventral radii and across the otolith width. Observed fish lengths at each marking time were compared with back-calculated lengths using linear and nonlinear scale and body proportional hypotheses (SPH and BPH) and biological intercept (BI) models. Measurements along the dorsal and distal radius with SPH and BI provided more accurate fish length estimates but with lower precision, whereas measurements of the ventral radius consistently produced greater overestimations by any model. Otolith width measurements produced moderately overestimated fish length estimates but with the highest precision and were significantly affected by temperature in all models. Certain combinations of model and otolith dimension were more sensitive to the length of the back-calculation time interval, whereas varying feeding regime induced temporary biases only. The selection of B-C model and otolith dimension thus depends not only on the environmental conditions that the fish experience, but also on the requirements of the application for which the B-C is used. |
format |
Article in Journal/Newspaper |
author |
Li, L. Høie, H. Geffen, A. J. Heegaard, E. Skadal, J. Folkvord, A. |
author_facet |
Li, L. Høie, H. Geffen, A. J. Heegaard, E. Skadal, J. Folkvord, A. |
author_sort |
Li, L. |
title |
Back-calculation of previous fish size using individually tagged and marked Atlantic cod (Gadus morhua) |
title_short |
Back-calculation of previous fish size using individually tagged and marked Atlantic cod (Gadus morhua) |
title_full |
Back-calculation of previous fish size using individually tagged and marked Atlantic cod (Gadus morhua) |
title_fullStr |
Back-calculation of previous fish size using individually tagged and marked Atlantic cod (Gadus morhua) |
title_full_unstemmed |
Back-calculation of previous fish size using individually tagged and marked Atlantic cod (Gadus morhua) |
title_sort |
back-calculation of previous fish size using individually tagged and marked atlantic cod (gadus morhua) |
publisher |
Canadian Science Publishing |
publishDate |
2008 |
url |
http://dx.doi.org/10.1139/f08-157 http://www.nrcresearchpress.com/doi/full-xml/10.1139/F08-157 http://www.nrcresearchpress.com/doi/pdf/10.1139/F08-157 |
genre |
atlantic cod Gadus morhua |
genre_facet |
atlantic cod Gadus morhua |
op_source |
Canadian Journal of Fisheries and Aquatic Sciences volume 65, issue 11, page 2496-2508 ISSN 0706-652X 1205-7533 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/f08-157 |
container_title |
Canadian Journal of Fisheries and Aquatic Sciences |
container_volume |
65 |
container_issue |
11 |
container_start_page |
2496 |
op_container_end_page |
2508 |
_version_ |
1785578797911769088 |