Jumbo Squid (Dosidicus gigas) in situ Target Strength measurements in Northwest Mexico
RIO Acoustics 2013, Rio de Janeiro, BRA, 24-/07/2013 - 26/07/2013 In order to convert acoustic abundance indexes into biomass is essential to establish the relationship between squid size dorsal mantle length (DML) and acoustic Target Strength (TS). We had carried out in situ measurement in 2012 off...
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ftccsdartic:oai:HAL:hal-04378214v1 2024-02-27T08:39:59+00:00 Jumbo Squid (Dosidicus gigas) in situ Target Strength measurements in Northwest Mexico Villalobos, H. Manini-Ramos, F. Salinas-Zavala, C. Brehmer, Patrice Laboratoire des Sciences de l'Environnement Marin (LEMAR) (LEMAR) Institut de Recherche pour le Développement (IRD)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Université de Brest (UBO)-Institut Universitaire Européen de la Mer (IUEM) Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS) Rio de Janeiro, Brazil 2013-07-24 https://hal.science/hal-04378214 https://doi.org/10.1109/RIOAcoustics.2013.6683994 en eng HAL CCSD IEEE info:eu-repo/semantics/altIdentifier/doi/10.1109/RIOAcoustics.2013.6683994 ISBN: 978-1-4799-0362-7 hal-04378214 https://hal.science/hal-04378214 doi:10.1109/RIOAcoustics.2013.6683994 IRD: fdi:010064373 RIO Acoustics 2013 https://hal.science/hal-04378214 RIO Acoustics 2013, Jul 2013, Rio de Janeiro, Brazil. 3 p., ⟨10.1109/RIOAcoustics.2013.6683994⟩ MEXIQUE PACIFIQUE [SDV.BA]Life Sciences [q-bio]/Animal biology info:eu-repo/semantics/conferenceObject Conference papers 2013 ftccsdartic https://doi.org/10.1109/RIOAcoustics.2013.6683994 2024-01-28T00:11:38Z RIO Acoustics 2013, Rio de Janeiro, BRA, 24-/07/2013 - 26/07/2013 In order to convert acoustic abundance indexes into biomass is essential to establish the relationship between squid size dorsal mantle length (DML) and acoustic Target Strength (TS). We had carried out in situ measurement in 2012 off Baja California on Dosidicus gigas. For both frequencies, we found significant differences between modes of measured and predicted TS distributions, 6 and 11 dB for 120 and 38 kHz, respectively. It is known that TS varies with several factors, including echosounder characteristics and transducer frequency and mainly the target orientation in the acoustic beam and many other biological variables. In relation to squid behavior, during the capture operation small fish schools were observed in the area, which may suggest that squid were feeding. Further observations and analysis are necessary in order to obtain reliable TS - DML relationship for jumbo squid before attempting acoustic biomass assessment methods to this important species. Conference Object DML Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) Baja 2013 IEEE/OES Acoustics in Underwater Geosciences Symposium 1 3 |
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Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) |
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English |
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MEXIQUE PACIFIQUE [SDV.BA]Life Sciences [q-bio]/Animal biology |
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MEXIQUE PACIFIQUE [SDV.BA]Life Sciences [q-bio]/Animal biology Villalobos, H. Manini-Ramos, F. Salinas-Zavala, C. Brehmer, Patrice Jumbo Squid (Dosidicus gigas) in situ Target Strength measurements in Northwest Mexico |
topic_facet |
MEXIQUE PACIFIQUE [SDV.BA]Life Sciences [q-bio]/Animal biology |
description |
RIO Acoustics 2013, Rio de Janeiro, BRA, 24-/07/2013 - 26/07/2013 In order to convert acoustic abundance indexes into biomass is essential to establish the relationship between squid size dorsal mantle length (DML) and acoustic Target Strength (TS). We had carried out in situ measurement in 2012 off Baja California on Dosidicus gigas. For both frequencies, we found significant differences between modes of measured and predicted TS distributions, 6 and 11 dB for 120 and 38 kHz, respectively. It is known that TS varies with several factors, including echosounder characteristics and transducer frequency and mainly the target orientation in the acoustic beam and many other biological variables. In relation to squid behavior, during the capture operation small fish schools were observed in the area, which may suggest that squid were feeding. Further observations and analysis are necessary in order to obtain reliable TS - DML relationship for jumbo squid before attempting acoustic biomass assessment methods to this important species. |
author2 |
Laboratoire des Sciences de l'Environnement Marin (LEMAR) (LEMAR) Institut de Recherche pour le Développement (IRD)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Université de Brest (UBO)-Institut Universitaire Européen de la Mer (IUEM) Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS) |
format |
Conference Object |
author |
Villalobos, H. Manini-Ramos, F. Salinas-Zavala, C. Brehmer, Patrice |
author_facet |
Villalobos, H. Manini-Ramos, F. Salinas-Zavala, C. Brehmer, Patrice |
author_sort |
Villalobos, H. |
title |
Jumbo Squid (Dosidicus gigas) in situ Target Strength measurements in Northwest Mexico |
title_short |
Jumbo Squid (Dosidicus gigas) in situ Target Strength measurements in Northwest Mexico |
title_full |
Jumbo Squid (Dosidicus gigas) in situ Target Strength measurements in Northwest Mexico |
title_fullStr |
Jumbo Squid (Dosidicus gigas) in situ Target Strength measurements in Northwest Mexico |
title_full_unstemmed |
Jumbo Squid (Dosidicus gigas) in situ Target Strength measurements in Northwest Mexico |
title_sort |
jumbo squid (dosidicus gigas) in situ target strength measurements in northwest mexico |
publisher |
HAL CCSD |
publishDate |
2013 |
url |
https://hal.science/hal-04378214 https://doi.org/10.1109/RIOAcoustics.2013.6683994 |
op_coverage |
Rio de Janeiro, Brazil |
geographic |
Baja |
geographic_facet |
Baja |
genre |
DML |
genre_facet |
DML |
op_source |
RIO Acoustics 2013 https://hal.science/hal-04378214 RIO Acoustics 2013, Jul 2013, Rio de Janeiro, Brazil. 3 p., ⟨10.1109/RIOAcoustics.2013.6683994⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1109/RIOAcoustics.2013.6683994 ISBN: 978-1-4799-0362-7 hal-04378214 https://hal.science/hal-04378214 doi:10.1109/RIOAcoustics.2013.6683994 IRD: fdi:010064373 |
op_doi |
https://doi.org/10.1109/RIOAcoustics.2013.6683994 |
container_title |
2013 IEEE/OES Acoustics in Underwater Geosciences Symposium |
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3 |
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1792047073615413248 |