Marine pollution bulletin最新文献

{"title":"Prolonged low-salinity stress drives coordinated energy metabolism reprogramming and membrane lipid remodeling in the hepatopancreas of mated female mud crab (Scylla paramamosain): An integrated multi-omics study.","authors":"Tariq Dildar, Yongcheng Xue, Wenxiao Cui, Waqas Waqas, Mhd Ikhwanuddin, Zhuokun Shen, Hongyu Ma","doi":"10.1016/j.marpolbul.2026.120497","DOIUrl":"https://doi.org/10.1016/j.marpolbul.2026.120497","url":null,"abstract":"<p><p>The mud crab Scylla paramamosain is a commercially important euryhaline crustacean, yet the long-term hepatopancreatic response to low salinity remains largely uncharacterized. Adult mated females were exposed to (30, 15, and 5 ppt) salinity for 40 days, and hepatopancreatic responses were assessed using integrated histological, biochemical, transcriptomic, metabolomic, and lipidomic analyses. Low salinity exposure inhibited growth and survival and caused progressive hepatopancreatic injury, from lumen dilation at 15 ppt to severe vacuolization, basement-membrane disruption, and haemocyte infiltration at 5 ppt. Salinity stress elevated superoxide dismutase activity and reduced malondialdehyde content, whereas total protein declined, suggesting antioxidant activation and protein mobilization to meet energetic demands. Transcriptomic and gene set enrichment analyses showed coordinated activation of oxidative phosphorylation, the tricarboxylic acid cycle, ribosome, and proteasome pathways, together with sustained cytochrome p450 and UDP glucuronosyltransferase mediated detoxification. Steroid biosynthesis was selectively suppressed under low salinity. Metabolomic profiling shifted with salinity level, from nutrient-sensing signaling and amino-acid metabolism at 15 ppt to AMPK and HIF-1 signaling, the tricarboxylic acid cycle, and nucleotide metabolism at 5 ppt. Lipidomic evidence revealed extensive glycerophospholipid and cardiolipin remodeling, linking membrane adaptation with mitochondrial energy metabolism. Integrated analysis identified glycolysis/gluconeogenesis as the only significantly co-enriched pathway at 5 ppt, with pyruvate emerging as a key node linking glycolysis and the TCA cycle in the integrated network. Overall, prolonged low-salinity exposure compromises hepatopancreatic integrity while activating coordinated energy mobilization, membrane remodeling, and detoxification responses that support osmotic adaptation in female mud crabs.</p>","PeriodicalId":18215,"journal":{"name":"Marine pollution bulletin","volume":"234 Pt 1","pages":"120497"},"PeriodicalIF":4.9,"publicationDate":"2026-10-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149269681","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Toxicity of cadmium chloride (CdCl₂) in Phorcus lineatus: Effects on survival, mobility and hemocyte parameters.","authors":"Fatiha Fahmi, Jamila Sif","doi":"10.1016/j.marpolbul.2026.120508","DOIUrl":"https://doi.org/10.1016/j.marpolbul.2026.120508","url":null,"abstract":"<p><p>This study aims to evaluate, under controlled conditions, the acute toxicity of cadmium chloride (CdCl₂) in the marine gastropod Phorcus lineatus. Specimens sampled from Morocco's Atlantic coast were exposed to different concentrations of CdCl₂ for 96 h, with two replicates for each tested concentration. Survival and mobility were assessed at 24, 48, 72, and 96 h of exposure. The effect of CdCl₂ on total hemocytes number (THN) and hemocyte size were also evaluated. The results showed a significant decrease in survival and mobility with increasing CdCl₂ concentration and exposure duration. The median lethal concentration (LC₅₀) at 96 h was estimated at 6.04 mg L^-1 CdCl₂ (95% confidence interval: 4.91-7.41 mg L^-1), corresponding to 2.97 mg L^-1 Cd. Exposure to the contaminant induced a significant reduction in the size of hyalinocytes and their nuclei in animals treated with concentrations ≥5 mg L^-1, whereas granulocytes and undifferentiated cells showed no significant effects. In gastropods exposed to low CdCl₂ concentrations (≤ 5 mg L^-1), THN increased significantly with exposure time. However, it decreased in individuals treated at 20 mg L^-1, suggesting an immunotoxic effect of CdCl₂.</p>","PeriodicalId":18215,"journal":{"name":"Marine pollution bulletin","volume":"234 Pt 1","pages":"120508"},"PeriodicalIF":4.9,"publicationDate":"2026-10-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149269716","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Corrigendum to \"Tracking organic mercury bioaccumulation by the brown mussel Perna perna (Linnaeus, 1758) in subtropical bays: Environmental exposure and seasonal effects\" [Mar. Pollut. Bull. 228 (2026) 119510].","authors":"Petrus Galvao, Renan L Longo, Adan S Lino, Loïc N Michel, Valquiria M C Aguiar, Daniel F Araújo, João P M Torres, Olaf Malm, Humberto Marotta, Paulo R Dorneles, Krishna Das","doi":"10.1016/j.marpolbul.2026.120181","DOIUrl":"10.1016/j.marpolbul.2026.120181","url":null,"abstract":"","PeriodicalId":18215,"journal":{"name":"Marine pollution bulletin","volume":" ","pages":"120181"},"PeriodicalIF":4.9,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148592126","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Accumulation of potentially toxic elements in tissues of the invasive blue crab (Callinectes sapidus): Seasonal and sex-related variation and human health risk assessment.","authors":"Nour-Elhouda Basraoui, Yassine Mimouni, Bouchra El Guerrouj, Abdelhafid Chafi","doi":"10.1016/j.marpolbul.2026.120018","DOIUrl":"10.1016/j.marpolbul.2026.120018","url":null,"abstract":"<p><p>This study assessed the accumulation of potentially toxic elements (PTEs; Zn, Cu, As, Al, Pb, Cd, and Hg) in three tissues (hepatopancreas, gills, and muscle) of the invasive blue crab Callinectes sapidus, an increasingly abundant species in the Moulouya estuary (Mediterranean coast of Morocco), and evaluated the potential human health risks associated with its consumption. By integrating tissue-specific accumulation, seasonal variability, sex-related differences, and health risk assessment, this work provides the first comprehensive evaluation of PTE contamination in C. sapidus from this estuarine ecosystem. Samples collected during dry and wet seasons were analyzed by Inductively Coupled Plasma Atomic Emission Spectroscopy (ICP-AES) and Cold Vapor Atomic Absorption Spectroscopy (CV-AAS). Analytical quality was ensured through the use of certified reference materials (TORT-3), procedural blanks, replicate analyses, and instrument calibration checks. Results revealed clear tissue-specific accumulation patterns. The hepatopancreas exhibited the highest concentrations of Zn (88.3 μg/g), As (24.2 μg/g), Pb (0.74 μg/g), and Hg (0.018 μg/g), whereas gills accumulated elevated levels of Al (86.73 μg/g), Cu (81.58 μg/g), and Cd (0.06 μg/g). Muscle tissue consistently showed the lowest concentrations for most elements. Metal concentrations were generally higher during the dry season, while no significant sex-related differences were observed (p > 0.05). Human health risk assessment indicated that EDI, HQ, HI, TCR, and CRL values remained within acceptable limits for both adults and children. These findings suggest that, despite its ability to accumulate PTEs in metabolically active tissues, the edible muscle of C. sapidus poses a low health risk under the exposure assumptions applied. Continued monitoring, together with physicochemical characterization and the inclusion of other relevant species, would strengthen seafood safety assessment and environmental management in this estuarine ecosystem.</p>","PeriodicalId":18215,"journal":{"name":"Marine pollution bulletin","volume":"231 ","pages":"120018"},"PeriodicalIF":4.9,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148272412","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Shipping noise may trigger valve closure responses in exploited scallop beds of the Gulf of St. Lawrence.","authors":"Pierre Poitevin, Florian Aulanier, Frédéric Olivier, Youenn Jézéquel, Antoine Frémont, Laurent Chauvaud, Réjean Tremblay","doi":"10.1016/j.marpolbul.2026.120319","DOIUrl":"https://doi.org/10.1016/j.marpolbul.2026.120319","url":null,"abstract":"<p><p>Shipping noise is a pervasive form of underwater noise pollution, yet its effects on benthic invertebrates remain poorly integrated into spatial risk assessments. The Atlantic sea scallop (Placopecten magellanicus), a benthic bivalve supporting the world's largest wild pectinid fishery, detects low-frequency sound (100-500 Hz), overlapping the dominant range of shipping noise. Previous experiments documented life-stage-dependent valve-closure responses, with juveniles showing higher response probabilities than young adults, particularly at 100-150 Hz. We combined commercially exploited scallop-bed distributions, life-cycle information, experimentally derived acoustic dose-response relationships, and probabilistic shipping-noise models to assess the probability that shipping noise may elicit valve closure across scallop habitats in the Gulf of St. Lawrence. Particle-acceleration dose-response relationships were converted into pressure-level response functions compatible with the modeled mean-square sound pressure spectral density level, Lp,f. Their integration generated seasonal response-probability maps at 125 Hz, the modeled frequency located between the experimental frequencies of strongest response. Response probability showed strong spatial and seasonal variability. The highest probabilities occurred near major shipping routes during winter and early spring. Juveniles showed higher response probabilities and broader affected areas than young adults, reaching >30% in some beds during winter months. Several peripheral beds displayed consistently low response probabilities and may function as acoustic refuges. Because these peaks coincide with periods of elevated energetic demand, shipping noise warrants consideration in cumulative-stressor assessments and marine spatial planning. To our knowledge, this is the first spatial mapping of shipping-noise-induced behavioral-response probability for a marine invertebrate. Maps are available through the Ocean Soundscape Atlas.</p>","PeriodicalId":18215,"journal":{"name":"Marine pollution bulletin","volume":"233 Pt 2","pages":"120319"},"PeriodicalIF":4.9,"publicationDate":"2026-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148887879","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Anthropogenic microparticles across intertidal, shallow and mesophotic reef sediments in the Southwestern Atlantic.","authors":"Yasmin Barros, Marcelo O Soares, Alejandro P Ayala, Vasco S Neto, Jessica Reichert, Ítalo B Castro, Tommaso Giarrizzo, Rivelino M Cavalcante","doi":"10.1016/j.marpolbul.2026.120302","DOIUrl":"https://doi.org/10.1016/j.marpolbul.2026.120302","url":null,"abstract":"<p><p>The distribution of anthropogenic microparticles (AMPs) in reef sediments across different depths and along gradients of estuarine and urban influence remains poorly documented. This study provides baseline information on AMPs in sediments from intertidal (0-2 m), shallow (17-19 m), and mesophotic (30 m) reefs in the Southwestern Atlantic. Concentrations ranged from 73.27 to 1246.45 particles kg^-1 dry weight, with the highest values recorded in intertidal reefs located closest to estuarine inputs. A total of 384 particles were recorded, predominantly fibers, while transparent and blue particles were the most common colors. Raman spectroscopy was used to identify particles, including plastic polymers such as polypropylene and polyethylene terephthalate (PET), as well as non-plastic particles composed of microcrystalline cellulose. Color composition differed among reef sites, with similar patterns observed in intertidal reefs adjacent to urbanized estuaries and in offshore shallow and mesophotic reefs. These findings provide baseline information on the occurrence, characteristics, and spatial distribution of anthropogenic microparticles in reef sediments across a tropical shelf gradient, contributing to a better understanding of microplastic and textile-derived contamination in understudied reef environments.</p>","PeriodicalId":18215,"journal":{"name":"Marine pollution bulletin","volume":"233 Pt 2","pages":"120302"},"PeriodicalIF":4.9,"publicationDate":"2026-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148865644","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Spatiotemporal distribution and risk assessment of microplastics in the beach sediments of Ramanathapuram, Southeast coast of Tamil Nadu","authors":"Arulselastin Yamini, Pandurengan Padmavathy, Durairaj Manimekalai, Rajendran Shalini, Natarajan Jayakumar","doi":"10.1016/j.marpolbul.2026.120186","DOIUrl":"https://doi.org/10.1016/j.marpolbul.2026.120186","url":null,"abstract":"The present study investigates the occurrence and distribution of microplastics in beach sediments of six sampling sites along the Ramanathapuram coast, Southeast Tamil Nadu, India between July 2024 and June 2025. Sediment samples were collected across four seasons such as pre-monsoon, monsoon, post-monsoon and summer. The collected samples were analysed for microplastic abundance, spatial and seasonal variation and their morphological and chemical characteristics. The mean microplastic abundance in sediment was 78.68 ± 6.9 items/kg dry weight. Spatial distribution revealed higher microplastic contamination at Thondi and temporal distribution during the monsoon season. Microplastic with size 1‐2 mm (23.48%), blue colour (34.09%) and fibre (45.16%) were more prevalent in sediment. Polyethylene and polypropylene were the dominant polymers. Weathered patterns were observed by SEM analysis. PLI classified all sampling sites as hazard level I (1.46). Though PLI indicates low, PHI revealed the risk as hazard level V (48578) and also PERI as danger (1067). Overall, the results of the present study show the ecological threat by microplastic pollution and highlight the need for pollution monitoring and plastic waste management.","PeriodicalId":18215,"journal":{"name":"Marine pollution bulletin","volume":"227 1","pages":""},"PeriodicalIF":5.8,"publicationDate":"2026-08-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148691374","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Dispersal and water age of the plumes from the four outlets of the Pearl River during the dry winter.","authors":"Guang Zhang, Pengpeng Hu, Suan Hu, Yuren Chen, Junpeng Zhao, Chunlei Ma, Heng Zhang, Wenping Gong","doi":"10.1016/j.marpolbul.2026.119759","DOIUrl":"10.1016/j.marpolbul.2026.119759","url":null,"abstract":"<p><p>This study quantitatively investigates the impacts of hydrodynamic factors on the transport pathways and water age (WA) of river plumes from four outlets in the Pearl River Estuary during the dry winter season using the well-validated Coupled Ocean-Atmosphere-Wave-Sediment Transport (COAWST) model. With reduced discharge and strong downwelling-favorable winds, winter plumes are confined within the estuary with intense lateral overlap, favoring westward spreading and higher WA. River discharge dominates WA variability, with surface WA more sensitive than bottom WA. Strong northerly winds enhance seaward advection, while wave-induced Stokes drift reduces WA by ~0.5 days over the West Shoal but increases WA by >2 days in the southeastern estuary. Easterly winds exert weaker effects. Tides reduce bottom WA east of the West Shoal via enhanced vertical turbulent mixing and modify residual currents, which in turn increases surface WA in the Humen plume, especially during spring tides. Plume-plume interactions also regulate WA: the Humen plume reduces WA of lateral plumes by 1-7 days, and the Hengmen plume impedes mainstream plumes' westward intrusion and causes 1-2 days of local changes. As a fundamental proxy for the transport of all terrestrial inputs, the quantified WA distribution highlights the complex interactions of discharge, winds, waves, tides, and plume-plume interactions in modulating estuarine dynamics, with direct implications for pollutant transport, nutrient accumulation, and harmful algal bloom risk assessment in similar subtropical estuarine systems.</p>","PeriodicalId":18215,"journal":{"name":"Marine pollution bulletin","volume":"229 ","pages":"119759"},"PeriodicalIF":4.9,"publicationDate":"2026-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147775920","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Unusual patterns of organohalogenated compounds in fillet, liver, and brain of dab (Limanda limanda) from the North and Baltic Seas.","authors":"Sina Schweizer, Rebecca Hirschfeld, Paula Reiser, Jakob Hauns, Alexander Schächtele, Klaus Wysujack, Alexandra Poell, Walter Vetter","doi":"10.1016/j.marpolbul.2026.119778","DOIUrl":"10.1016/j.marpolbul.2026.119778","url":null,"abstract":"<p><p>Thirty-two pools as well as individual samples of fillet, liver and brain of dab (Limanda limanda) from seven marine regions in the North and Baltic Seas were analyzed on halogenated natural products (HNPs) and anthropogenic persistent organic pollutants (POPs). The residue pattern was dominated by the well-known HNP 2,4,6-tribromophenol (TBP, 27-420 ng/g lipid, fillet) and the man-made PCB 153 (29-100 ng/g lipid, fillet). Indications on the presence of polybrominated dibenzo-p-dioxins (PBDDs) could be verified in ten of 12 samples by two independent gas chromatography with mass spectrometry (GC/MS) methods. Synthesis of a PBDD mixture, followed by enrichment of individual PBDD congeners by countercurrent chromatography and their calibration by GC with flame ionization detection (GC/FID) enabled the (semi-)quantitation of individual PBDD congeners, ranging from 2 to 1100 ng/g lipids. The PBDDs which were most likely naturally produced were even the most abundant substance class in some of the samples. A new approach of considering the total weights of the entire fillet, liver, and brain samples, respectively, enabled determining the total amounts of compounds for the distribution within the fish. This data treatment indicated differences between HNPs and POPs. Namely, >60% of the determined HNPs but only 36-53% of the POPs were stored in the fillet of the fish. Spatial differences between HNPs (TBP) and POPs (PCBs) were also found with TBP becoming more abundant with increasing distance from the coast.</p>","PeriodicalId":18215,"journal":{"name":"Marine pollution bulletin","volume":"229 ","pages":"119778"},"PeriodicalIF":4.9,"publicationDate":"2026-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147775887","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Organic and inorganic contaminants in surface and subsurface sediments from Bulgarian Black Sea waters.","authors":"Stepan Boitsov, Hilde Elise Heldal, Valentina G Doncheva, Lene Buhl-Mortensen","doi":"10.1016/j.marpolbul.2026.119784","DOIUrl":"10.1016/j.marpolbul.2026.119784","url":null,"abstract":"<p><p>An extensive study of organic and inorganic pollutants in surface sediments from 32 locations and sediment cores from four locations in Bulgarian Black Sea waters has been carried out. The study included metals, hydrocarbons including polycyclic aromatic hydrocarbons (PAHs), legacy chlorinated and brominated contaminants (polychlorinated biphenyls (PCBs), polybrominated diphenyl ethers (PBDEs), dichlorodiphenyltrichloroethane (DDT) and its degradation products, hexachlorocyclohexanes (HCHs), hexachlorobenzene (HCB), trans-nonachlor) and contaminants of emerging concern (per- and polyfluoroalkyl substances (PFAS)). PBDEs and PFAS are reported in marine sediments from this region for the first time. After studying grain size, total organic carbon contents and ²¹⁰Pb-dating of sediment cores, the levels of these pollutants are concluded to be low at most locations. An exception is several coastal locations off the ports of Varna and Burgas and the Kamchia River estuary, where strongly elevated levels of several pollutants were found. Possible sources for these are discussed based on compound or congener composition. Contaminant levels in sediments from the remaining locations were mostly determined by sediment characteristics, the higher levels found in fine-grained sediments in the open sea. Two of the sediment cores demonstrated an increase in pyrogenic PAHs in recent times, attributed to anthropogenic impacts, while the metals were largely at their natural background level determined through core analysis. No apparent impact of the ongoing war in Ukraine upon sediment pollution could be found as per October 2024, two years after the start of the war.</p>","PeriodicalId":18215,"journal":{"name":"Marine pollution bulletin","volume":"229 ","pages":"119784"},"PeriodicalIF":4.9,"publicationDate":"2026-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147775890","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}