Accumulation of microplastics in predatory birds near a densely populated urban area

The Science of The Total Environment, Journal Year: 2024, Volume and Issue: 917, P. 170604 - 170604

Published: Feb. 2, 2024

Language: Английский

---

How do life history and behaviour influence plastic ingestion risk in Canadian freshwater and terrestrial birds?

Environmental Pollution, Journal Year: 2024, Volume and Issue: 347, P. 123777 - 123777

Published: March 13, 2024

Plastic ingestion presents many potential avenues of risk for wildlife. Understanding which species and environments are most exposed to plastic pollution is a critical first step in investigating the One Health implications exposure. The objectives this study were following: 1) Utilize necropsy as part ongoing passive disease surveillance investigate ingested mesoplastics birds collected Ontario Nunavut, examine relationships between bird-level factors debris; 2) evaluate microplastic compared mesodebris raptors; 3) identify sentinel monitoring understudied freshwater terrestrial (inland) environments. Between 2020-2022, 457 free-ranging across 52 received postmortem examination. upper gastrointestinal tracts examined other debris (>2 mm) using standard techniques. Twenty-four individuals (5.3%) retained prevalence varied species, with foraging technique, food type, substrate all associated different metrics ingestion. odds ingesting any type anthropogenic was nine times higher non-raptorial than raptors. For subset raptors (N = 54) 14 terminal portion distal intestinal tract digested potassium hydroxide microparticles assessed stereo-microscopy. Although only one 54 (1.9%) included both analyses tract, 24 (44.4%) contained intestine. This demonstrates that variety Canadian bird ingest inland systems, suggests life history behaviour risk. raptors, mechanisms governing exposure appear be those govern microplastics. Herring gulls (Larus argentatus) ring-billed delawarensis) proposed ideal sentinels systems.

Language: Английский

---

Contamination of coastal and marine bird species with plastics: Global analysis and synthesis

Marine Pollution Bulletin, Journal Year: 2024, Volume and Issue: 206, P. 116687 - 116687

Published: July 17, 2024

This review article provides an account of coastal and marine bird species contaminated with plastics in light ingestion, taxonomy, feeding clusters, types, shapes, colours lethal sublethal effects. Bird were found 39 locations/countries across the seven continents. Global analysis shows that low, medium high plastic ingestion occurred globe. Fulmars, shearwaters, petrels, albatrosses, gulls, kittiwakes (all marine/seabirds) several locations world. belonging to Procellariidae, Laridae, Diomedeidae (by taxonomy), piscivorous, molluscivorous, cancrivorous habits) most plastics. Microplastic, mesoplastic macroplastic sizes), PP, PE, PS, PET, PAN PVC types), fragments, pellets, fibres, foams, sheets, threads, fishing lines films shapes) white, blue, green, black, clear, red yellow colours) common ingested by birds. Several fall within critically endangered, endangered vulnerable categories. The can cause direct harm birds resulting death. In addition, plastic-derived toxic chemical additives plastic-adsorbed chemicals would be additional stressor causing both effects greater health measures are suggested reduce pollution environment safeguard environment.

Language: Английский

---

Plastic ingestion, accumulated heavy metals, and health metrics of four Larus gull species feeding at a coastal landfill in eastern Canada

Journal of Hazardous Materials, Journal Year: 2024, Volume and Issue: 476, P. 135107 - 135107

Published: July 14, 2024

The objectives of this research were to assess ingested plastics and accumulated heavy metals in four urban gull species. Additionally, the relationships between selected demographic health metrics assessed. Between 2020–2021 during non-breeding seasons, 105 gulls (46 American herring (HERG, Larus argentatus smithsonianus), 39 great black-backed (GBBG, marinus), 16 Iceland (Larus glaucoides), 4 glaucous hyperboreus)) killed at a landfill coastal Newfoundland Labrador, Canada, as part separate, permitted kill-to-scare operations related aircraft safety. Birds necropsied, upper gastrointestinal tract contents processed using standard techniques, livers analyzed for As, Cd, Hg, Pb. plastics, demographics, assessed HERG GBBG. Across all species, 85 % birds had least one piece anthropogenic debris, with 79 ingesting plastic. We detected interspecific differences plastic ingestion hepatic trace metals, increased GBBG compared HERG. For GBBG, levels relatively greater higher scaled mass index, while more liver lead concentrations.

Language: Английский

---

Microplastic contamination in threatened wild felids of India: Understanding environmental uptake, feeding implications, and associated risks

Environmental Research, Journal Year: 2025, Volume and Issue: unknown, P. 121218 - 121218

Published: Feb. 1, 2025

Language: Английский

---

Microplastic in an apex predator: evidence from Barn owl (Tyto alba) pellets in two sites with different levels of anthropization

Environmental Science and Pollution Research, Journal Year: 2024, Volume and Issue: 31(22), P. 33155 - 33162

Published: May 11, 2024

Language: Английский

---

Unraveling Plastic Pollution in Protected Terrestrial Raptors Using Regurgitated Pellets

Microplastics, Journal Year: 2024, Volume and Issue: 3(4), P. 671 - 684

Published: Nov. 8, 2024

The threat of plastic pollution has escalated to unprecedented levels, with particular concern surrounding microplastics (MPs) and artificial fibers or particles (AFs) due their wide distribution across ecosystems bioavailability wildlife. Although research on the impact wild birds is rapidly growing, knowledge terrestrial species remains limited, especially regarding raptors, which have been significantly understudied. Here, we investigated prevalence MPs AFs in regurgitated pellets from six protected raptor species, namely Cinereous Vulture (Aegypius monachus), Bonelli’s Eagle (Aquila fasciata), Little Owl (Athene noctua), Lesser Kestrel (Falco naumanni), Red Kite (Milvus milvus), Barn (Tyto alba), collected between 2022 2023. Our analysis revealed that 68% contained (47 out 69), 81% (56 69). Additionally, two macroplastics were found inside pellets: a cable tie bird identification ring Vulture. concentrations (mean ± standard error mean) 2.39 0.39 MPs/pellet 5.16 0.72 AFs/pellet. concentration varied among some studied species; however, no significant differences observed urban, rural, areas. This could indicate contamination levels are mainly related type species. Fibers emerged as predominant contaminant shape, different polymers identified, PET, PE, acrylics most prevalent. These findings highlight reached raptors life cycles needs be assessed.

Language: Английский

---

Heavy metals and microplastics derived from laboratory effluents enhance toxicological risks to the ecosystems of canals in Bangladesh

Environmental Science and Pollution Research, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 22, 2024

Language: Английский

---