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Closed Access item Esterase activities and lipid peroxidation levels in offshore commercial species of the NW Mediterranean Sea

Authors:Solé, Montserrat
García de la Parra, L. M.
Alejandre-Grimaldo, S.
Sardà, Francisco
Keywords:Blue whiting (Micromesistius poutassou, Greater forkbead (Phycis blennoides), Hake (Merluccius merluccius), Norway Lobster (Nephrops norvegicus), Colinesterases; Carboxylesterase, Lipid peroxidation
Issue Date:Dec-2006
Citation:Marine Pollution Bulletin 52(12):1708-1716 (2006)
Abstract:There is a lack of information on monitoring neurotoxicity in offshore commercial species. To help fill this gap, we sampled hake (Merluccius merluccius) and Norway lobster (Nephrops norvegicus) in fishing grounds off the coast of l’Ametlla de Mar (NW Mediterranean) in June 2005 at a depth of 100 m and 400 m. Additionally, at 400 m depth, two other fish species, Micromesistius poutassou and Phycis blennoides were included. Neurotoxicity markers such as Colinesterases (ChEs), namely acethyl- (AChE), butyryl- (BChE), propionyl- (PrChE) and carboxilesterase (CbE) were measured in muscle. Lipid peroxidation (LP), a marker of oxidative damage, was also included. The results are discussed in relation to the animal’s sex, size and fishing depth. A comparison of esterases and LP levels between muscle and liver of hake and between muscle and hepatopancreas of Norway Lobster was made. AChE was dominant in muscle and CbE in hepatopancreas. No differences between fish species were seen for AChE. However, N. norvegicus, presented lower levels of ChEs and LP. A size-dependence in ChEs was seen for M. merluccius, with larger animals showing significantly lower activities (p < 0.05). Sex-dependence was seen in N. norvegicus for most esterases, except AChE, with males displaying higher activities (p < 0.05). A sampling-depth effect was also seen in the crustacea, with animals from 100 m generally presenting lower esterase activities and higher LP levels.
Description:9 pages, 3 figures, 3 tables
Publisher version (URL):http://dx.doi.org/10.1016/j.marpolbul.2006.07.015
Appears in Collections:(ICM) Artículos

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