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61,005 resultsShowing papers similar to Characterization of Ingested Plastic Microparticles Extracted from Sea Turtle Post-Hatchlings at Necropsy
ClearPlastic Ingestion in Post-hatchling Sea Turtles: Assessing a Major Threat in Florida Near Shore Waters
Plastic fragments were found in the digestive tracts of 93% of stranded juvenile loggerhead sea turtles examined in Florida, with up to 287 fragments and a plastic-to-body weight ratio as high as 1.23%. The high ingestion rates in animals this young suggest that plastic pollution poses a serious threat to sea turtle survival from the earliest life stages.
High frequency of micro- and meso-plastics ingestion in a sample of neonate sea turtles from a major rookery
Researchers found that 79% of neonate sea turtles washed ashore dead on Florida's Atlantic coast had ingested plastics, with microplastics being the most common type found. This high rate of plastic ingestion in very young turtles—before they have even left coastal waters—points to a severe and early-life pollution problem affecting an already threatened species.
Ingestion of microplastic debris by green sea turtles (Chelonia mydas) in the Great Barrier Reef: Validation of a sequential extraction protocol
Researchers developed and validated a sequential extraction protocol for recovering microplastics from green sea turtle intestinal contents, finding microplastics in turtles from the Great Barrier Reef. The validated method enables more consistent and accurate assessment of microplastic contamination in sea turtles, which are both ecologically important and frequently exposed to marine debris.
Association of ocean macroplastic debris with stranded sea turtles in the Central Gulf of Thailand
Researchers retrospectively analyzed records of 388 stranded sea turtles in the Central Gulf of Thailand from 2017-2020 and examined macroplastics from the gastrointestinal tracts of 30 dead turtles and 13 beaches, finding that green turtles (Chelonia mydas) comprised the majority of strandings and that plastic ingestion and entanglement were significant mortality factors.
Microplastic ingestion ubiquitous in marine turtles
Researchers examined over 100 marine turtles across all seven species and found synthetic particles in every single individual tested. The study suggests that microplastic ingestion is ubiquitous across marine turtle species, regardless of geographic location or life stage, raising broad concerns about plastic contamination in large marine vertebrates.
Study on Plastic Ingestion in Carcasses Sea Turtles on Enggano Island, Indonesia
Researchers examined plastic ingestion in carcasses of five green turtles and five hawksbill turtles found dead on Enggano Island, Indonesia, finding that both macroplastics and microplastics were detected in 100% of individuals, with 164 macroplastic items recovered from green turtles and fragments being the dominant plastic category.
Ingestion and characterization of plastic debris by loggerhead sea turtle, Caretta caretta, in the Balearic Islands
Loggerhead sea turtles stranded in the Balearic Islands were examined for ingested plastic debris, with plastics found in a substantial proportion of individuals and including a variety of polymer types and item categories. The study highlights sea turtles as sensitive indicators of plastic pollution in the Mediterranean and documents the diversity of plastic items entering the marine environment.
Analysis of Plastic Ingestion by Juvenile Loggerhead Sea Turtles (Caretta caretta) Stranded from Tenerife, Canary Islands
This study analyzed plastic ingestion by juvenile loggerhead sea turtles, characterizing the types and quantities of plastics found in gut contents and linking ingestion rates to foraging habitat and developmental stage.
The feeding habit of sea turtles influences their reaction to artificial marine debris
Video cameras attached to sea turtles and fecal analysis showed that loggerhead and green turtles frequently encounter and ingest artificial marine debris, with debris found in over 84% of loggerhead gut contents examined. Feeding habitat and diet type influenced debris exposure — carnivorous loggerheads encountered far more plastic debris than herbivorous green turtles.
Microplastic accumulation, depuration dynamics and localization in environmental compartments: combination of experimental set ups and field studies
Researchers used microcosm experiments to track microplastic accumulation, depuration, and tissue localization in marine organisms under environmentally relevant conditions. The study found that organisms can accumulate and partially depurate microplastics, with particle retention varying by tissue type and particle size.
Diet-related selectivity of macroplastic ingestion in green turtles (Chelonia mydas) in the eastern Mediterranean
Green sea turtles in the eastern Mediterranean were found to ingest macroplastic debris that resembles their natural food (seagrass), suggesting diet-based selectivity drives plastic ingestion in this species. This has conservation implications for turtles whose habitat overlaps with plastic-polluted coastal areas.
Differential impact of marine debris ingestion during ontogenetic dietary shift of green turtles in Uruguayan waters
Researchers analyzed gut contents of 96 stranded green turtles from Uruguay and found debris in 70% of individuals, with hard plastics most abundant by weight; smaller (juvenile) turtles had significantly more debris ingestion, identifying the early juvenile life stage as particularly vulnerable to plastic pollution in the southwestern Atlantic.
Data Collection on Marine Litter Ingestion in Sea Turtles and Thresholds for Good Environmental Status
Researchers developed a standardized protocol for collecting and analyzing marine litter ingested by sea turtles, providing methodology for extracting and quantifying litter items from dead turtles to fulfill EU Marine Strategy Framework Directive requirements for assessing Good Environmental Status.
Plastic ingestion in oceanic-stage loggerhead sea turtles (Caretta caretta) off the North Atlantic subtropical gyre
Researchers analysed gastrointestinal tracts of 24 juvenile loggerhead sea turtles (Caretta caretta) collected in the North Atlantic subtropical gyre near the Azores, finding that 20 of 24 individuals had ingested plastic debris, highlighting the vulnerability of oceanic-stage juveniles to plastic pollution.
Microplastic ingestion in sea snakes: Examining age-related exposure and regional differences
Researchers examined gastrointestinal tracts of 63 sea snakes from six species stranded along the UAE coast and found microplastics in 95.3% of individuals, with an average of 9.15 MPs/g and 96.9% of particles being fibers, providing the first published data on microplastic ingestion by sea snakes.
A quantitative risk assessment framework for mortality due to macroplastic ingestion in seabirds, marine mammals, and sea turtles
Researchers analyzed over 10,000 necropsies of seabirds, marine mammals, and sea turtles to quantify the risk of death from swallowing large plastic debris. The study found that sea turtles faced the highest mortality rate at 4.4%, and the type of plastic mattered: rubber was most dangerous for seabirds, fishing debris for marine mammals, and soft plastics for sea turtles.
Impact of Plastic Debris on the Gut Microbiota of Caretta caretta From Northwestern Adriatic Sea
Researchers analyzed fecal microbiota from 45 loggerhead sea turtles and found that individuals with more ingested plastic debris had distinct gut microbial compositions, suggesting plastic pollution may be altering the gut ecosystem of this Mediterranean flagship species.
Validation of an optimised protocol for quantification of microplastics in heterogenous samples: A case study using green turtle chyme
This paper developed and validated an optimized protocol for extracting and quantifying microplastics from the gut contents of marine organisms. Having a reliable, standardized method is essential for generating consistent data on microplastic ingestion across different species and studies.
Microplastic exposure and effect on loggerhead turtle health
This study characterized microplastic exposure and health effects in loggerhead sea turtles, examining how plastic ingestion relates to blood biomarkers and tissue condition. Turtles with higher microplastic loads showed elevated inflammatory markers and reduced body condition scores, indicating measurable health impacts from plastic ingestion in the wild.
Microplastics contamination in natural sea turtle nests at Redang Island, Malaysia
This study measured microplastic contamination in natural sea turtle nesting beach sediments at Redang Island, Malaysia, finding microplastics present in all sampled nests. The presence of microplastics raises concerns about potential effects on nest temperature, hatching success, and hatchling development.
Occurrence of microplastics in commercial fish from a natural estuarine environment
Researchers examined the gastrointestinal tracts of commercial fish caught from a natural estuarine environment and found microplastics in a significant proportion of individuals, documenting both occurrence rates and particle characteristics.