Multilinear Regression Analysis between Local Bioimpedance Spectroscopy and Fish Morphological Parameters

Type Article
Date 2023-02
Language English
Author(s) Kerzérho VincentORCID1, Azaïs Florence1, Bernard Serge1, Bonhommeau SylvainORCID2, Brisset Blandine2, de Knyff Laurent1, Julien Mohan2, Renovell Michel1, Rouyer TristanORCID3, Saraux Claire4, Soulier Fabien1
Affiliation(s) 1 : LIRMM, Univ Montpellier, CNRS, 161 rue Ada, CEDEX 5, 34095 Montpellier, France
2 : IFREMER/DOI, rue J. Bertho, 97822 Le Port, France
3 : IFREMER, Univ Montpellier, MARBEC, Av. J. Monnet, 34203 Sète, France
4 : IPHC, CNRS, UDS, 23 rue Becquerel, 67087 Strasbourg, France
Source Fishes (2410-3888) (MDPI AG), 2023-02 , Vol. 8 , N. 2 , P. 88 (16p.)
DOI 10.3390/fishes8020088
WOS© Times Cited 1
Note This article belongs to the Special Issue Morphometrics in Fisheries and Aquaculture
Keyword(s) bioimpedance, spectroscopy, morphology, machine learning

Repeated fish handling may cause stress, which biases experiments and so affects the results. In order to reduce this, the present study investigates the benefit of using bioimpedance analysis to estimate morphological parameters. Bioimpedance analysis is a non-lethal and integrative electrical measurement that can be used to estimate several kinds of physiological parameters and is used in medicine and ecological studies. In particular, bioimpedance can monitor the individual growth of fish, which is a prerequisite for most biological and ecological studies, as body size is one of the best predictors for numerous life history traits and ecological parameters. After a short review on the use of bioimpedance measurement in medicine and ecology, we illustrate the potential of bioimpedance spectroscopy, as opposed to single frequency measurement, for experimental studies on fish. Using a monolithic four-contact electrode and a cost-effective portable system, we conducted bioimpedance spectroscopy on 159 sardines. The association between the length, weight, and electrical parameters obtained at different frequencies from the bioimpedance spectroscopy was investigated. Our results show that accounting for more than one frequency substantially improves the prediction of length and weight. We conclude that bioimpedance could potentially be a powerful tool for monitoring fish growth in ecological studies.

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Kerzérho Vincent, Azaïs Florence, Bernard Serge, Bonhommeau Sylvain, Brisset Blandine, de Knyff Laurent, Julien Mohan, Renovell Michel, Rouyer Tristan, Saraux Claire, Soulier Fabien (2023). Multilinear Regression Analysis between Local Bioimpedance Spectroscopy and Fish Morphological Parameters. Fishes, 8(2), 88 (16p.). Publisher's official version : , Open Access version :