{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,6]],"date-time":"2026-03-06T13:53:06Z","timestamp":1772805186245,"version":"3.50.1"},"reference-count":24,"publisher":"MDPI AG","issue":"2","license":[{"start":{"date-parts":[[2018,1,29]],"date-time":"2018-01-29T00:00:00Z","timestamp":1517184000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"Spanish MINECO, Programa Retos-Colaboraci\u00f3n 2014","award":["RTC-2014-2837-2"],"award-info":[{"award-number":["RTC-2014-2837-2"]}]},{"name":"Spanish MINECO","award":["CTM2012-40203-C02-01"],"award-info":[{"award-number":["CTM2012-40203-C02-01"]}]},{"name":"Euskampus Fundazioa - Campus of International Excellence","award":["307615SAA2"],"award-info":[{"award-number":["307615SAA2"]}]},{"DOI":"10.13039\/501100003086","name":"Basque Government","doi-asserted-by":"publisher","award":["KK-2016\/00057"],"award-info":[{"award-number":["KK-2016\/00057"]}],"id":[{"id":"10.13039\/501100003086","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Entropy"],"abstract":"<jats:p>The present study investigates the suitability of a machine vision-based method to detect deviations in the Shannon entropy (SE) of a European seabass (Dicentrarchus labrax) biological system fed with different selenium:mercury (Se:Hg) molar ratios. Four groups of fish were fed during 14 days with commercial feed (control) and with the same feed spiked with 0.5, 5 and 10 mg of MeHg per kg, giving Se:Hg molar ratios of 29.5 (control-C1); 6.6, 0.8 and 0.4 (C2, C3 and C4). The basal SE of C1 and C2 (Se:Hg &gt; 1) tended to increase during the experimental period, while that of C3 and C4 (Se:Hg &lt; 1) tended to decrease. In addition, the differences in the SE of the four systems in response to a stochastic event minus that of the respective basal states were less pronounced in the systems fed with Se:Hg molar ratios lower than one (C3 and C4). These results indicate that the SE may be a suitable indicator for the prediction of seafood safety and fish health (i.e., the Se:Hg molar ratio and not the Hg concentration alone) prior to the displaying of pathological symptoms. We hope that this work can serve as a first step for further investigations to confirm and validate the present results prior to their potential implementation in practical settings.<\/jats:p>","DOI":"10.3390\/e20020090","type":"journal-article","created":{"date-parts":[[2018,1,29]],"date-time":"2018-01-29T07:46:20Z","timestamp":1517211980000},"page":"90","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":9,"title":["The Shannon Entropy Trend of a Fish System Estimated by a Machine Vision Approach Seems to Reflect the Molar Se:Hg Ratio of Its Feed"],"prefix":"10.3390","volume":"20","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-4014-6376","authenticated-orcid":false,"given":"Harkaitz","family":"Eguiraun","sequence":"first","affiliation":[{"name":"Department of Graphic Design and Engineering Projects, Faculty of Engineering in Bilbao, University of the Basque Country UPV\/EHU, E-48013 Bilbao, Spain"},{"name":"Research Center for Experimental Marine Biology and Biotechnology-Plentziako Itsas Estazioa (PiE), University of the Basque Country UPV\/EHU, E-48620 Plentzia, Spain"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4191-5648","authenticated-orcid":false,"given":"Oskar","family":"Casquero","sequence":"additional","affiliation":[{"name":"Department of Systems Engineering and Automatic Control, Faculty of Engineering in Bilbao, University of the Basque Country UPV\/EHU, E-48013 Bilbao, Spain"}]},{"given":"Iciar","family":"Martinez","sequence":"additional","affiliation":[{"name":"Research Center for Experimental Marine Biology and Biotechnology-Plentziako Itsas Estazioa (PiE), University of the Basque Country UPV\/EHU, E-48620 Plentzia, Spain"},{"name":"IKERBASQUE Basque Foundation for Science, E-48013 Bilbao, Spain"},{"name":"Norwegian College of Fishery Science, Faculty of Biosciences, Fisheries and Economics, University of Troms\u00f8-The Arctic University of Norway, N-9019 Troms\u00f8, Norway"}]}],"member":"1968","published-online":{"date-parts":[[2018,1,29]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"234","DOI":"10.1126\/science.1257469","article-title":"World population stabilization unlikely this century","volume":"346","author":"Gerland","year":"2014","journal-title":"Science"},{"key":"ref_2","unstructured":"German Advisory Council on Global Change\u2014WBGU (2013). 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