26 documents found, page 1 of 3

Stock structure of the gulf hake urophycis cirrata (Teleostei: Phycidae) in sou...

Urophycis cirrata is an important demersal fish species targeted by Brazilian industrial fisheries. With high exploitation rates, its stock(s) is(are) currently deemed fully exploited or overexploited. While basic ecological information, such as length at first maturity, exists, knowledge of its population structure is limited. A sub-sample of 90 sagittal otoliths of U. cirrata juveniles (300–411 mm total lengt...

Population structure of the European seabass (Dicentrarchus labrax) in the Atla...

The European seabass (Dicentrarchus labrax) is one of the most emblematic coastal fish species in the Northeast Atlantic, with high commercial value for fisheries and aquaculture, and importance for sport and recreational fishing. Despite its socio-economic importance, the Iberian divisions, Cantabrian Sea (8c) and the Atlantic Iberian waters (9a), defined by the International Council for the Exploration of the...

Assessment of the effects in mussels (Mytilus edulis) chronically exposed to en...

Background: The presence of metallic nanoparticles (NP) in the aquatic environment is a cause for concern as they can have adverse effects on biota [1,2]. Objective: The purpose of this study was to evaluate the effect on mussels (Mytilus edulis) chronically exposed to environmentally realistic concentrations of nickel nanoparticles using oxidative stress and lipid peroxidation biomarkers. Methods: In this stud...

Otolith shape and elemental signatures provide insights into the connectivity o...

Intersex gonads have been observed in thicklip grey mullet Chelon labrosus, inhabiting estuaries with high burdens of xenoestrogens in the Southeast Bay of Biscay, but knowledge of population connectivity among estuaries is lacking for this euryhaline fish species. This study investigates the population structure of C. labrosus using otolith shape and elemental signatures of 60 adults (overall length ~ 38 cm) f...

Assessment of paracetamol toxic effects under varying seawater pH conditions on...

Increasing atmospheric carbon dioxide (CO2) levels are likely to lower ocean pH values, after its dissolution in seawater. Additionally, pharmaceuticals drugs are environmental stressors due to their intrinsic properties and worldwide occurrence. It is thus of the utmost importance to assess the combined effects of pH decreases and pharmaceutical contamination, considering that their absorption (and effects) ar...

Use of otolith shape and elemental signatures to infer the population structure...

Xenoestrogenic effects have been reported in thicklip grey mullet, Chelon labrosus, used as pollution sentinel organisms in estuaries in the Southeast Bay of Biscay with intersex gonads described in populations from some contaminated estuaries. Despite evidence of reproductive stress in this catadromous fish species, knowledge of mullet reproductive movements and connectivity between estuaries is lacking. This ...

Population structure of the brazilian carapeba eugerres brasilianus in a comple...

The Brazilian mojarra, Eugerres brasilianus, is an economically important species for the artisanal fisheries that exist in the estuarine environments along the Southwest Atlantic Ocean. Despite this, knowledge about its population structure is scarce, and no management strategies have been applied to ensure the sustainability of E. brasilianus fisheries in Brazil. Thus, the present study intended to understand...

Assessment of the water and sediments quality around the coastal submarine sewa...

The discharge of domestic sewage is one of the most common types of marine pollution, namely through submarine outfalls. In this study, water and sediments of the coastal submarine sewage outfall in Guarujá, São Paulo, Brazil were assessed during the high (January) and low (April) tourist seasons in 2018. The Canadian Council of Ministers of the Environmental Water Quality Index (CCMEWQI) showed a “marginal” wa...

Population structure of the bigtooth corvina Isopisthus parvipinnis from the So...

Spatio-temporal evaluation of the population structure of the bigtooth corvina ...