Dalya Belhassen

• PhD
• Doctor in Biological Sciences at Tunis El Manar University

The aim of this study is to evaluate the toxic effects of cobalt chloride concentrations (2 μg/LCoCl 2 (D1), 25 μg/LCoCl 2 (D2), and 50 μg/LCoCl 2 (D3)) on the fatty acid profile and nutritional quality of Cyprinus carpio muscle. After 3 days of treatment, our results have shown an induction of lipid peroxidation affirmed by significant increases i...

Widespread use of pesticides in agriculture has the potential to harm non-target creatures diffusely and contaminate aquatic habitats through leaching and runoff events. Triazoles are among the fungicides used extensively worldwide due to their efficacy against fungal crop diseases and their broad spectrum of action. In this study, the impact of To...

The byssus is a bundle of fibers that bivalves produce to anchor themselves to submerged surfaces underwater. In this study, the total lipid content (TL) and the fatty acid (FA) composition of the byssus of the bivalve Noah's ark shell (Arca noae) were determined. Results showed that TL content was higher in winter than in summer. The FA profile of...

Object In light of the dimethoate known toxicity, it is imperative to evaluate its impact on lipid profile and its potential genotoxicity of key species like the Mediterranean green crabs. Methods The current study aimed to assess the effect of dimethoate acute toxicity on the fatty acid composition and DNA integrity of C. aestuarii’s hepatopancre...

Cobalt (Co) is an essential element to fish and other organisms that become toxic at high concentrations. This element is emerging as a concerning pollutant in water bodies, potentially endangering the health of marine biota. The aim of this study was to investigate the short-term subcellular toxicity of cobalt in the common carp Cyprinus carpio (0...

The current study aims to examine the concentrations of eight trace elements (TE) (nickel, aluminum, copper, cadmium, lead, cobalt, chromium, and zinc) in the edible tissue of the invasive blue crab Portunus segnis in two southern Mediterranean lagoons (i.e., Bizerte Lagoon (BL) and Ghar El-Melh Lagoon (GML)) between 2020 and 2021. The samples were...

The baleful effect of penconazole fungicide on clam Ruditapes decussatus gills: fatty acids composition, redox status and histological features, Chemistry and Ecology, ABSTRACT Penconazole is a widely used fungicide to control critical fungal diseases of crops. This study aimed to elucidate the effects of PEN exposure, for 96 h, on fatty acids comp...

Barium (Ba) is a naturally occurring alkaline earth metal that is mined and used for industrial purposes. This earth metal can easily impact organisms commonly found in coastal zones, particularly marine bivalves, through aquatic discharges resulting from industrial activities. The aim of the present study was to assess the potential toxic effects...

The present investigation was undertaken to evaluate the toxic effects of CoCl2-induced hepatotoxicity and fatty acid changes in juvenile Cyprinus carpio. Fish were divided into six experimental groups in duplicate. The first group served as controls. The second group received the lowest exposure dose at 2.5 µg/L. In the third group, fish were expo...

Dimethoate (DMT) is one of the most harmful and commonly used organophosphate pesticides in agricultural lands to control different groups of parasitic insects. However, this pesticide is considered a dangerous pollutant for aquatic organisms following its infiltration in coastal ecosystems through leaching. Yet, our investigation aimed to gain new...

The present study aimed to evaluate the seasonal evolution of lipid classes (polar (PL) and neutral lipids (NL)) in the gonad–visceral mass (GV) and adductor muscle (AM) of Mactra stultorum collected from the northern coast of Tunisia. Our results have shown that NL was the major lipids in GV. However, the PL characterizes the AM. Significant decre...

The blue swimming crab Portunus segnis has a great economic interest in local and foreign fishing markets and is in high demand by consumers. The aim of the present work was to evaluate the change in total lipid (TL), fatty acids composition and nutritional quality indices (NQI) of the meat of blue swimming crab Portunus segnis after freezing at -18...

Dimethoate is a broad-spectrum organophosphate insecticide and acaricide. Through various pathways, such as runoff and drift, dimethoate can reach marine environment, and easily impact common organisms in coastal areas, close to agriculture lands, namely crustaceans. The purpose of this study was to investigate the potential effects of dimethoat...

The current study examined the concentrations of eight trace elements (TE) (nickel, aluminum, copper, cadmium, lead, cobalt, chromium, and zinc) in the edible tissue of the invasive blue swimming crab Portunus segnis from two southern Mediterranean lagoons, Bizerte Lagoon (BL) and Ghar El-Melh Lagoon (GML), in the years 2020–2021. The highest TE co...

The present study aimed to compare the nutritional quality of three fi sh species (Sparus aurata, Sarpa salpa, and Mullus barbatus) collected from the Bizerte lagoon (South Mediterranean coasts). Proximate composition, fatty acids and nutritional quality indices were determined. Results showed that the nutritional quality of the three fish follows...