Swimbladders under pressure: anatomical and acoustic responses by walleye pollock
Abstract Horne, J. K., Sawada, K., Abe, K., Kreisberg, R. B., Barbee, D. H., and Sadayasu, K. 2009. Swimbladders under pressure: anatomical and acoustic responses by walleye pollock. – ICES Journal of Marine Science, 66: 1162–1168. Pressure influences echo intensities from fish through changes in sw...
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Online Access: | http://dx.doi.org/10.1093/icesjms/fsp101 http://academic.oup.com/icesjms/article-pdf/66/6/1162/29133800/fsp101.pdf |
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croxfordunivpr:10.1093/icesjms/fsp101 2024-02-04T10:04:58+01:00 Swimbladders under pressure: anatomical and acoustic responses by walleye pollock Horne, John K. Sawada, Kouichi Abe, Koki Kreisberg, Richard B. Barbee, David H. Sadayasu, Kazuhiro 2009 http://dx.doi.org/10.1093/icesjms/fsp101 http://academic.oup.com/icesjms/article-pdf/66/6/1162/29133800/fsp101.pdf en eng Oxford University Press (OUP) ICES Journal of Marine Science volume 66, issue 6, page 1162-1168 ISSN 1095-9289 1054-3139 Ecology Aquatic Science Ecology, Evolution, Behavior and Systematics Oceanography journal-article 2009 croxfordunivpr https://doi.org/10.1093/icesjms/fsp101 2024-01-05T09:52:27Z Abstract Horne, J. K., Sawada, K., Abe, K., Kreisberg, R. B., Barbee, D. H., and Sadayasu, K. 2009. Swimbladders under pressure: anatomical and acoustic responses by walleye pollock. – ICES Journal of Marine Science, 66: 1162–1168. Pressure influences echo intensities from fish through changes in swimbladder volumes and surface areas. Volume reduction is expected to correspond to Boyle’s law (volume α pressure−1), but the effects of deforming the dorsal-aspect surface area of the swimbladder on the target strength (TS) of a physoclist have not been quantified at geometric scattering frequencies. Dorsal and lateral radiographs of three juvenile walleye pollock (Theragra chalcogramma) in a pressure chamber were used to image swimbladders from ambient to a maximum of 4.9 × 105 Pa (i.e. 5 atm). Radiographs from an additional 16 0-group, 21 juvenile, and 28 adult fish were used to compare swimbladder sizes and shapes across life-history stages. The directional elliptical eccentricity, which describes the relative compression in dorsal and lateral planes, was formulated to define swimbladder shapes and their variation. As pressure increased, dorsal-aspect surface areas of the swimbladder decreased at a constant rate. Swimbladder-volume reductions were similar among individuals, but less than those predicted by Boyle’s law. Compression was greatest in the dorsal–ventral plane and asymmetric anterior to posterior. The Kirchhoff-ray mode backscatter model predicted that TS at 38 and 120 kHz decreased by ∼4 dB as pressure increased from ambient to 4.9 × 105 Pa. Article in Journal/Newspaper Theragra chalcogramma Oxford University Press (via Crossref) ICES Journal of Marine Science 66 6 1162 1168 |
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 Horne, John K. Sawada, Kouichi Abe, Koki Kreisberg, Richard B. Barbee, David H. Sadayasu, Kazuhiro Swimbladders under pressure: anatomical and acoustic responses by walleye pollock |
topic_facet |
Ecology Aquatic Science Ecology, Evolution, Behavior and Systematics Oceanography |
description |
Abstract Horne, J. K., Sawada, K., Abe, K., Kreisberg, R. B., Barbee, D. H., and Sadayasu, K. 2009. Swimbladders under pressure: anatomical and acoustic responses by walleye pollock. – ICES Journal of Marine Science, 66: 1162–1168. Pressure influences echo intensities from fish through changes in swimbladder volumes and surface areas. Volume reduction is expected to correspond to Boyle’s law (volume α pressure−1), but the effects of deforming the dorsal-aspect surface area of the swimbladder on the target strength (TS) of a physoclist have not been quantified at geometric scattering frequencies. Dorsal and lateral radiographs of three juvenile walleye pollock (Theragra chalcogramma) in a pressure chamber were used to image swimbladders from ambient to a maximum of 4.9 × 105 Pa (i.e. 5 atm). Radiographs from an additional 16 0-group, 21 juvenile, and 28 adult fish were used to compare swimbladder sizes and shapes across life-history stages. The directional elliptical eccentricity, which describes the relative compression in dorsal and lateral planes, was formulated to define swimbladder shapes and their variation. As pressure increased, dorsal-aspect surface areas of the swimbladder decreased at a constant rate. Swimbladder-volume reductions were similar among individuals, but less than those predicted by Boyle’s law. Compression was greatest in the dorsal–ventral plane and asymmetric anterior to posterior. The Kirchhoff-ray mode backscatter model predicted that TS at 38 and 120 kHz decreased by ∼4 dB as pressure increased from ambient to 4.9 × 105 Pa. |
format |
Article in Journal/Newspaper |
author |
Horne, John K. Sawada, Kouichi Abe, Koki Kreisberg, Richard B. Barbee, David H. Sadayasu, Kazuhiro |
author_facet |
Horne, John K. Sawada, Kouichi Abe, Koki Kreisberg, Richard B. Barbee, David H. Sadayasu, Kazuhiro |
author_sort |
Horne, John K. |
title |
Swimbladders under pressure: anatomical and acoustic responses by walleye pollock |
title_short |
Swimbladders under pressure: anatomical and acoustic responses by walleye pollock |
title_full |
Swimbladders under pressure: anatomical and acoustic responses by walleye pollock |
title_fullStr |
Swimbladders under pressure: anatomical and acoustic responses by walleye pollock |
title_full_unstemmed |
Swimbladders under pressure: anatomical and acoustic responses by walleye pollock |
title_sort |
swimbladders under pressure: anatomical and acoustic responses by walleye pollock |
publisher |
Oxford University Press (OUP) |
publishDate |
2009 |
url |
http://dx.doi.org/10.1093/icesjms/fsp101 http://academic.oup.com/icesjms/article-pdf/66/6/1162/29133800/fsp101.pdf |
genre |
Theragra chalcogramma |
genre_facet |
Theragra chalcogramma |
op_source |
ICES Journal of Marine Science volume 66, issue 6, page 1162-1168 ISSN 1095-9289 1054-3139 |
op_doi |
https://doi.org/10.1093/icesjms/fsp101 |
container_title |
ICES Journal of Marine Science |
container_volume |
66 |
container_issue |
6 |
container_start_page |
1162 |
op_container_end_page |
1168 |
_version_ |
1789973812511506432 |