Assessment of the biochemical and nutritional values of Venerupis decussata from Tunisian lagoons submitted to different anthropogenic ranks

Differential Fatty Acids and Stress Biomarkers Responses in Native (Carcinus Aestuarii) and Invasive (Portunus Segnis) Crabs Exposed to Environmental Pollution

“…Thus, this enhancement of ARA prove the improvement in the adaptation of C.aestuarii to environmental stress mainly the invasion process of P.segnis, since it have an important physiological response (Vance and Vance 2002). Our ndings were in agreement with previous reports pointed out on in situ and in vivo works indicating the changes of FA composition of aquatic species concomitant with trace elements uptake or/and exposure (Bejaoui et al 2019;Fouzai et al 2020). Yet, this alteration of FA composition during winter season may be attributed to the decrease of temperature and salinity which are known to affect signi cantly the membrane uidity (Laurel et This change in fatty acid composition in organs can affect the function of proteins, mainly those of the membrane known as the vital structural constituents of several bimoleculars (Habeck et al 2016).…”

“…It has been reported previously that TEs accumulation in aquatic organisms may alter their metabolic functions and the macromolecular structures inducing reactive oxidative stress (ROS) production (Perrat et al 2013;Hussain et al 2018;Bejaoui et al 2019). In this sense, the levels of MDA and LOOH of C. aestuarii organs, mostly in the gills, showed signi cant increases regardless to the high accumulation of TEs than in P.segnis.…”

“…The Gulf of Gabes is known as the most dynamic ecosystem, devoting around 40% of the national aquatic production (DGPA 2015) and is considered as an important nursery for several species of sh (Enajjar et al 2015).This ecosystem was recently identi ed as one of the eleven consensus eco-regions of the Mediterranean and is considered, along with the Venetian Plateau region, to be a shallow, phytoplankton blooming region known to be oligotrophic, as it is governed by the in ux of nutrients generated from Atlantic surface waters from Gibraltar (Krom et al 2010, Ayata et al 2017. Despite the hydrodynamics and biogeochemistry of this area, the Gulf of Gabes received important daily industrial and agricultural discharges that affect its quality (Bejaoui et al 2019).…”

“…These pollutants are released into coastal aquatic ecosystems as a result of human activities such as urbanization, industrialization, and agricultural activities. These xenobiotics affect aquatic organisms causing signi cant negative health issues and mortality (Bejaoui et al 2019). Along the Tunisian coast, the Gulf of Gabes represents high value eco-socio-system; it has been recognized through decades as a biodiversity "Hot Spot".…”

“…Despite the Gulf of Gabes is exposed to anthropogenic factors altering its natural features, it has been submerged by invasive species that represented an added pressure on its functioning and sheries. Several exotic invasive species have been recorded in Tunisian coastal ecosystems and speci cally in the Gulf of Gabes (Bejaoui et al 2019).…”