In situ measurements of capelin (Mallotus villosus) target strength in the North Pacific Ocean
Abstract Guttormsen, M. A. and Wilson, C. D. 2009. In situ measurements of capelin (Mallotus villosus) target strength in the North Pacific Ocean. – ICES Journal of Marine Science, 66: 258–263. In situ measurements of capelin (Mallotus villosus) target strength (TS) were collected during summer 2001...
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Online Access: | http://dx.doi.org/10.1093/icesjms/fsn205 http://academic.oup.com/icesjms/article-pdf/66/2/258/29131737/fsn205.pdf |
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croxfordunivpr:10.1093/icesjms/fsn205 2023-11-05T03:40:48+01:00 In situ measurements of capelin (Mallotus villosus) target strength in the North Pacific Ocean Guttormsen, Michael A. Wilson, Christopher D. 2008 http://dx.doi.org/10.1093/icesjms/fsn205 http://academic.oup.com/icesjms/article-pdf/66/2/258/29131737/fsn205.pdf en eng Oxford University Press (OUP) ICES Journal of Marine Science volume 66, issue 2, page 258-263 ISSN 1095-9289 1054-3139 Ecology Aquatic Science Ecology, Evolution, Behavior and Systematics Oceanography journal-article 2008 croxfordunivpr https://doi.org/10.1093/icesjms/fsn205 2023-10-06T10:38:48Z Abstract Guttormsen, M. A. and Wilson, C. D. 2009. In situ measurements of capelin (Mallotus villosus) target strength in the North Pacific Ocean. – ICES Journal of Marine Science, 66: 258–263. In situ measurements of capelin (Mallotus villosus) target strength (TS) were collected during summer 2001–2003 near Kodiak Island in the Gulf of Alaska, using a calibrated EK500 echosounder with 38 and 120 kHz split-beam transducers. Targets were detected over dispersed, night-time aggregations using standard acoustic methods, then filtered using a quality-control algorithm to reject invalid targets. The 38 kHz-based, fitted model estimate was TS = 20 log10L− 70.3 (r2 = 0.30), where L is total length of fish. Compared with other studies, the TS-fitted model at 38 kHz was similar to that calculated from swimbladder morphology measurements from St Lawrence estuary capelin (TS = 20 log10L− 69.3), but resulted in greater estimates than models based on in situ measurements of capelin TS in the Barents Sea (TS = 19.1 log10L−74.0) and northern Atlantic Ocean (TS = 20 log10L − 73.1). The large intraspecific variability exhibited in the fitted TS – L models for this species suggests the use of TS measurements from the geographic region where the data were collected. Article in Journal/Newspaper Barents Sea Kodiak Alaska Oxford University Press (via Crossref) ICES Journal of Marine Science 66 2 258 263 |
institution |
Open Polar |
collection |
Oxford University Press (via Crossref) |
op_collection_id |
croxfordunivpr |
language |
English |
topic |
Ecology Aquatic Science Ecology, Evolution, Behavior and Systematics Oceanography |
spellingShingle |
Ecology Aquatic Science Ecology, Evolution, Behavior and Systematics Oceanography Guttormsen, Michael A. Wilson, Christopher D. In situ measurements of capelin (Mallotus villosus) target strength in the North Pacific Ocean |
topic_facet |
Ecology Aquatic Science Ecology, Evolution, Behavior and Systematics Oceanography |
description |
Abstract Guttormsen, M. A. and Wilson, C. D. 2009. In situ measurements of capelin (Mallotus villosus) target strength in the North Pacific Ocean. – ICES Journal of Marine Science, 66: 258–263. In situ measurements of capelin (Mallotus villosus) target strength (TS) were collected during summer 2001–2003 near Kodiak Island in the Gulf of Alaska, using a calibrated EK500 echosounder with 38 and 120 kHz split-beam transducers. Targets were detected over dispersed, night-time aggregations using standard acoustic methods, then filtered using a quality-control algorithm to reject invalid targets. The 38 kHz-based, fitted model estimate was TS = 20 log10L− 70.3 (r2 = 0.30), where L is total length of fish. Compared with other studies, the TS-fitted model at 38 kHz was similar to that calculated from swimbladder morphology measurements from St Lawrence estuary capelin (TS = 20 log10L− 69.3), but resulted in greater estimates than models based on in situ measurements of capelin TS in the Barents Sea (TS = 19.1 log10L−74.0) and northern Atlantic Ocean (TS = 20 log10L − 73.1). The large intraspecific variability exhibited in the fitted TS – L models for this species suggests the use of TS measurements from the geographic region where the data were collected. |
format |
Article in Journal/Newspaper |
author |
Guttormsen, Michael A. Wilson, Christopher D. |
author_facet |
Guttormsen, Michael A. Wilson, Christopher D. |
author_sort |
Guttormsen, Michael A. |
title |
In situ measurements of capelin (Mallotus villosus) target strength in the North Pacific Ocean |
title_short |
In situ measurements of capelin (Mallotus villosus) target strength in the North Pacific Ocean |
title_full |
In situ measurements of capelin (Mallotus villosus) target strength in the North Pacific Ocean |
title_fullStr |
In situ measurements of capelin (Mallotus villosus) target strength in the North Pacific Ocean |
title_full_unstemmed |
In situ measurements of capelin (Mallotus villosus) target strength in the North Pacific Ocean |
title_sort |
in situ measurements of capelin (mallotus villosus) target strength in the north pacific ocean |
publisher |
Oxford University Press (OUP) |
publishDate |
2008 |
url |
http://dx.doi.org/10.1093/icesjms/fsn205 http://academic.oup.com/icesjms/article-pdf/66/2/258/29131737/fsn205.pdf |
genre |
Barents Sea Kodiak Alaska |
genre_facet |
Barents Sea Kodiak Alaska |
op_source |
ICES Journal of Marine Science volume 66, issue 2, page 258-263 ISSN 1095-9289 1054-3139 |
op_doi |
https://doi.org/10.1093/icesjms/fsn205 |
container_title |
ICES Journal of Marine Science |
container_volume |
66 |
container_issue |
2 |
container_start_page |
258 |
op_container_end_page |
263 |
_version_ |
1781697009897439232 |