Shannon entropy in a European seabass (Dicentrarchus labrax) system during the Initial recovery period after a short-term exposure to methylmercury

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Abstract

Methylmercury (MeHg) is an environmental contaminant of increasing relevance as a seafood safety hazard that affects the health and welfare of fish. Non-invasive, on-line methodologies to monitor and evaluate the behavior of a fish system in aquaculture may make the identification of altered systems feasible—for example, due to the presence of agents that compromise their welfare and wholesomeness—and find a place in the implementation of Hazard Analysis and Critical Control Points and Fish Welfare Assurance Systems. The Shannon entropy (SE) of a European seabass (Dicentrarchus labrax) system has been shown to differentiate MeHg-treated from non-treated fish, the former displaying a lower SE value than the latter. However, little is known about the initial evolution of the system after removal of the toxicant. To help to cover this gap, the present work aims at providing information about the evolution of the SE of a European seabass system during a recuperation period of 11 days following a two-week treatment with 4 µg¨ MeHg/L. The results indicate that the SE of the system did not show a recovery trend during the examined period, displaying erratic responses with daily fluctuations and lacking a tendency to reach the initial SE values.

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Eguiraun, H., López-de-Ipiña, K., & Martinez, I. (2016). Shannon entropy in a European seabass (Dicentrarchus labrax) system during the Initial recovery period after a short-term exposure to methylmercury. Entropy, 18(6). https://doi.org/10.3390/e18060209

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