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Acoustic signatures of three marine arthropods, Squilla mantis (Linnaeus, 1758), Homarus americanus (H. Milne Edwards, 1837), and Nephrops norvegicus (Linnaeus, 1758) (Arthropoda, Malacostraca)

Acoustic signatures of three marine arthropods, Squilla mantis (Linnaeus, 1758), Homarus americanus (H. Milne Edwards, 1837), and Nephrops norvegicus (Linnaeus, 1758) (Arthropoda, Malacostraca)
Acoustic signatures of three marine arthropods, Squilla mantis (Linnaeus, 1758), Homarus americanus (H. Milne Edwards, 1837), and Nephrops norvegicus (Linnaeus, 1758) (Arthropoda, Malacostraca)
The acoustic signatures of three marine crustaceans, Squilla mantis (Linnaeus,1758), Homarus americanus (H. Milne Edwards, 1837), and Nephrops norvegicus (Linnaeus 1758) (Arthropoda, Malacostraca), were experimentally determined in measurements using the calibration tank at the NATO Undersea Research Center, La Spezia, Italy. The specimens were insonified at 45° rotational intervals with a sound source emitting pings from 30 to 120 kHz. For all three species, the value of the nondimensional parameter ka (where k is the acoustic wave number and a is the characteristic dimension of the object) was >5. The absorption spectra, defined as the frequencies at which the intensity of the reflected sound was less than 5% of the incident intensity, were determined. These spectra changed with the changing aspects and were unique for each animal in this study. Two of the species were in the same infraorder, Astacidea. Our results contribute to the development of an acoustic identification system for surveys of marine animals.
0025-3324
67-80
Fornshell, J.A.
4099391e-1bd0-4be3-977e-3b6517ba4906
Tesei, Alessandra
1a0f98f7-e7d9-4a6f-bbc9-41baeaef2e0c
Fox, Paul D.
462039ef-2dd7-4dd0-8f4d-f853ffdf990a
Fornshell, J.A.
4099391e-1bd0-4be3-977e-3b6517ba4906
Tesei, Alessandra
1a0f98f7-e7d9-4a6f-bbc9-41baeaef2e0c
Fox, Paul D.
462039ef-2dd7-4dd0-8f4d-f853ffdf990a

Fornshell, J.A., Tesei, Alessandra and Fox, Paul D. (2010) Acoustic signatures of three marine arthropods, Squilla mantis (Linnaeus, 1758), Homarus americanus (H. Milne Edwards, 1837), and Nephrops norvegicus (Linnaeus, 1758) (Arthropoda, Malacostraca). Marine Technology Society Journal, 44 (5), 67-80.

Record type: Article

Abstract

The acoustic signatures of three marine crustaceans, Squilla mantis (Linnaeus,1758), Homarus americanus (H. Milne Edwards, 1837), and Nephrops norvegicus (Linnaeus 1758) (Arthropoda, Malacostraca), were experimentally determined in measurements using the calibration tank at the NATO Undersea Research Center, La Spezia, Italy. The specimens were insonified at 45° rotational intervals with a sound source emitting pings from 30 to 120 kHz. For all three species, the value of the nondimensional parameter ka (where k is the acoustic wave number and a is the characteristic dimension of the object) was >5. The absorption spectra, defined as the frequencies at which the intensity of the reflected sound was less than 5% of the incident intensity, were determined. These spectra changed with the changing aspects and were unique for each animal in this study. Two of the species were in the same infraorder, Astacidea. Our results contribute to the development of an acoustic identification system for surveys of marine animals.

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Published date: September 2010

Identifiers

Local EPrints ID: 165417
URI: http://eprints.soton.ac.uk/id/eprint/165417
ISSN: 0025-3324
PURE UUID: 7b77ec95-2ac1-4c91-842c-2b64bf7d1105

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Date deposited: 19 Oct 2010 08:52
Last modified: 22 Jul 2022 17:31

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Contributors

Author: J.A. Fornshell
Author: Alessandra Tesei
Author: Paul D. Fox

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