Microplastics (MP) pollution has received increased attention over the last few years. However, while number of studies documentating ingestion microplastics by fish increased, fewer have addressed toxicological effects derived from these small items in wild conditions. Here, MP contamination and effect biomarkers were investigated three commercially important species North East Atlantic Ocean. From 150 analysed (50 per species), 49 % had MP. In 3 species, gastrointestinal tract, gills...

Microplastics pollution is a global paradigm that raises concern in relation to environmental and human health. This study investigated toxic effects of microplastics mercury the European seabass (Dicentrarchus labrax), marine fish widely used as food for humans. A short-term (96 h) laboratory bioassay was done by exposing juvenile (0.26 0.69 mg/L), (0.010 0.016 mg/L) binary mixtures two substances using same concentrations, through test media. alone caused neurotoxicity acetylcholinesterase...

In the present study, levels of bisphenol A (BPA) and analagous compounds in muscle liver fish (Dicentrarchus labrax, Trachurus trachurus, Scomber colias) from North East Atlantic Ocean were determined risk their consumption by humans was assessed. The potential relationship between concentrations microplastic (MP) contamination also investigated. Fish all species had BPA muscle, B (BPB) E (BPE) muscle. highest concentration (302 ng/g dry weight - dw) found S. colias lowest one (5 T....

Microplastics and mercury are environmental pollutants of great concern. The main goal the present study was to investigate effects these pollutants, both individually in binary mixtures, on swimming performance juvenile European seabass, Dicentrarchus labrax. alone, alone all mixtures caused significant reduction velocity resistance time fish. Moreover, changes behavioural responses including lethargic erratic behaviour were observed. These results highlight that fish can be used as...

The presence of microplastics and several other pollutants in the marine environment is growing concern. However, knowledge on toxicity mixtures containing contaminants to species still scarce. main goals this study were investigate oxidative stress lipid damage potentially induced by 96 h exposure mercury (0.010 0.016 mg/L), (0.26 0.69 two substances (same concentrations, full factorial) gills liver D. labrax juveniles, possible influence bioconcentration (gills) bioaccumulation (liver)....

The main objectives of this study were to investigate the effects a mixture microplastics and mercury on Corbicula fluminea, post-exposure recovery, potential influence bioconcentration by species. Bivalves collected in field acclimated laboratory conditions for 14 days. Then, 14-day bioassay was carried out. exposed 8 days clean medium (control), (0.13 mg/L), (30 µg/L) (same concentrations) both substances. recovery investigated through 6 additional medium. After days, following endpoints...

Wild fish (Cyprinus carpio, Mugil cephalus, Platichthys flesus) from an estuary of the NE Atlantic coast were investigated for plastic contamination (N = 128). From 1289 particles recovered samples, 883 plastics. Among these, 84% fibres and 97% microplastics. Thirty-six polymers identified. The number microplastics (mean ± SD) per individual (MP/fish) was 8 6 in C. 10 9 M. cephalus 2 P. flesus. means MP/fish body site 7 gastrointestinal tract, 0.5 1.1 gills, 0.3 0.7 liver 0.6 1.2 muscle...

Pollution-induced neurotoxicity is of high concern. This pilot study investigated the potential relationship between presence microplastics (MPs) in brain 180 wild fish (Dicentrarchus labrax, Platichthys flesus, Mugil cephalus) from a contaminated estuary and activity acetylcholinesterase (AChE) enzyme. MPs were found 9 samples (5% total), all them D. labrax collected summer, which represents 45% this species that season (20). Seventeen recovered samples, with sizes ranging 8 to 96 μm....

Plastic particles (PLs) are ubiquitous in aquatic ecosystems, and aquaculture production is susceptible to contamination from external or endogenous sources. This study investigated PL presence water, fish feed body sites of 55 European seabass produced a recirculating system (RAS). Fish morphometric parameters health status biomarkers were determined. A total 372 PLs recovered water (37.2 PL/L), 118 (3.9 PL/g), 422 (0.7 PL/g fish; all analysed). All specimens had at least two the four...

Microplastics (MPs) are emerging contaminants of increasing concern as they may cause adverse effects and carry other contaminants, which potentially compromise human health. Despite occurring in aquatic ecosystems worldwide, the knowledge about MP presence different aquaculture systems their potential impact on seafood products is still limited. This study aimed to determine levels MPs water, feed, European seabass (Dicentrarchus labrax) from three relevant estimate exposure metals through...

Microplastic (MP) pollution has become a global concern due to its potential impacts on the environment, ecosystem services and human health. The goals of present study were document MP contamination in wild specimens Mytilus galloprovincialis sampled along Atlantic coast North region Portugal continental (NW Portuguese coast), estimate risk intake (HRI) through consumption local mussels as seafood. Mussels collected at four sampling sites NW (40 per site), whole soft body each mussel was...

This study documented seasonal levels of microplastics (MPs) and biomarkers (condition index, neurotoxicity, energy, oxidative stress) in mussels (Mytilus galloprovincialis), water physico-chemical parameters the Douro estuary (NE Atlantic coast), estimated human risk MP intake (HRI) through mussels. Mussel stress was determined Integrated Biomarker Response (IBR). HRI from mussel concentrations consumer habits. MPs were mainly micro-fibres (72 %) with varied chemical composition. Seasonal...

Global environmental contamination by microplastics (MPs) is a growing problem with potential One Health impacts. The presence of MPs in vital organs, such as the heart, particular concern, but knowledge still limited. goal present pilot study was to investigate heart wild specimens three commercial fish species (Merluccius merluccius, Sardina pilchardus, and Trisopterus luscus) from North East Atlantic Ocean. Heart samples 154 were analysed for MP content (one sample per fish). A total 44...

Beta diversity has become essential for understanding ecosystem functioning and determining biodiversity-conservation priority areas. However, the beta patterns of invertebrates in tropical aquatic ecosystems are not well known, particularly streams. Using data from low-order streams located southern Brazil, we evaluated Chironomidae. We tested hypothesis that increased environmental heterogeneity increases diversity. The were grouped into two categories, rural urban, according to percentage...

We tested the hypothesis that contribution of nestedness component is higher in environments with more similar features (lentic or lotic), whereas turnover dissimilar (lotic vs. lentic). To this end, we partitioned beta diversity Oligochaeta community into 12 Upper Paraná River floodplain. recorded 986 individuals 17 taxa. Through Redundancy Analysis, observed a differentiation between lentic and lotic habitats both by environmental as species composition. Our was partially supported,...

Com base em extensa investigação na literatura, o presente trabalho discute processo de transição da agricultura ao modelo agroecológico, abordando conceitos como convencional, produção, sustentabilidade e ecológica. A abordagem agroecológica propõe mudanças profundas nos sistemas nas formas produção. Na dessa mudança, está a filosofia se produzir acordo com as leis dinâmicas que regem os ecossistemas, ou seja, uma produção não contra natureza. Propõe, portanto, novas apropriação dos...