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

Aquatic pollution may favor the success of the invasive species A. franciscana

“…No differences in ChE activity in non-exposed individuals for the same stage of development were obtained between the Artemia species. An inverse relationship between ChE activity and developmental stage has been found, coinciding with the results of previous studies carried out with marine crustaceans and fish by Solé et al (2006). These authors found a negative correlation between AChE activity and size in hake (Merluccius merluccius), and in Norwegian lobster (Nephrops norvegicus).…”

Hepatic biomarkers of xenobiotic metabolism in eighteen marine fish from NW Mediterranean shelf and slope waters in relation to some of their biological and ecological variables

“…glutathione reductase (GR; EC 1.6.4.2), 7-ethoxyresorufin O-deethylase activity (EROD; EC 1.14.14.1), carboxylesterases (CbE; EC 3.1.1.1), glutathione S-transferase (GST; EC 2.5.1.18) as well as total protein content in the S10 fraction was as described elsewhere (Solé et al, 2006;2009a). Briefly, CAT, GR, CbE and GST were measured spectrophotometrically at the wavelength of 240, 340 (as decreases), 405 and 340 (as linear increases in optical density), respectively, over a one to 5 minutes period using a microplate reader model TECAN Infinite200.…”

“…The NW Mediterranean shelf and slope are subject to intense fisheries, and the occurrence of anthropogenic chemicals in their waters/sediment/biota has been well studied within the Mediterranean context (Albaigés et al, 2005;Gómez-Gutiérrez, 2007). Nevertheless, studies reporting the effects of chemicals on commercial fish are scarce as most of them focus on the sentinel red mullet in coastal sites (Porte et al, 2002;Martin-Skilton et al, 2006;Zorita et al, 2008), with less attention being paid to species from fishing grounds (García de la Parra et al, 2000;Solé et al, 2006;2009a;2009b). Thus, we have investigated the presence of organic pollutants (PAHs, PCBs and DDTs) in sediment from two areas:…”

Sublethal exposure to azamethiphos causes neurotoxicity, altered energy allocation and high mortality during simulated live transport in American lobster

“…Both the relationship between ChE inhibition and biological effects, and the relative proportions of different ChEs vary among species (Fulton and Key, 2001). In Norway lobster (Nephrops norvegicus), most of the muscle ChE activity is attributable to AChE with lower but significant contributions of other ChEs (Antó et al, 2009;Solé et al, 2006). In this species, a good linear correlation was observed between AChE and the other ChEs suggesting that ChEs is a good indicator of neurotoxicity (Solé et al, 2006).…”

“…In Norway lobster (Nephrops norvegicus), most of the muscle ChE activity is attributable to AChE with lower but significant contributions of other ChEs (Antó et al, 2009;Solé et al, 2006). In this species, a good linear correlation was observed between AChE and the other ChEs suggesting that ChEs is a good indicator of neurotoxicity (Solé et al, 2006). Based on our results, ChE activity in control American lobsters (7.8 nmoles min À 1 mg À 1 protein) is in the same range as the activity reported in the muscle of Norway lobster (AChE 6.4 nmoles min À 1 mg À 1 protein, BChE 1.4 nmoles min À 1 mg À 1 protein) collected at 100 m depth (Solé et al, 2006).…”