Plastic ingestion by Scyliorhinus canicula trawl captured in the North Sea

Smith, Lauren E.

doi:10.1016/j.marpolbul.2018.03.001

Cited by 40 publications

(20 citation statements)

References 17 publications

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“…Nearly 70% of all sharks sampled in our study contained at least one contaminant particle in their digestive tracts. Although this is likely to be a conservative estimate of incidence, this number is significantly higher than many other reports for similar shark species around the world 22,36,39,50,62,63 see Table 1. Studies by Alomar and Deudero 38 and Smith 36 revealed ingestion rates of microplastics at 16.8% in blackmouth catsharks sampled in the Mediterranean, and 15% in small-spotted catsharks from the North sea, respectively 36,63 .…”

Section: Discussionmentioning

confidence: 57%

“…Although this is likely to be a conservative estimate of incidence, this number is significantly higher than many other reports for similar shark species around the world 22,36,39,50,62,63 see Table 1. Studies by Alomar and Deudero 38 and Smith 36 revealed ingestion rates of microplastics at 16.8% in blackmouth catsharks sampled in the Mediterranean, and 15% in small-spotted catsharks from the North sea, respectively 36,63 . Interestingly, the Mediterranean is considered by some to be one of the worst affected oceans with regards to plastic pollution 5,64,65 , therefore ingestion of contaminant particles may have been expected to have been lower in North-East Atlantic.…”

Section: Discussionmentioning

confidence: 57%

“…Microplastic ingestion in elasmobranchs. Elasmobranchs are relatively understudied in regards to threats from plastic pollution 32,33 , nonetheless their susceptibility to microplastic ingestion has been reported in a handful of scientific publications 22,[34][35][36][37][38][39] . It is thought that some species of elasmobranch may be at higher risk of microplastic ingestion based on their feeding strategies or habitat use 35 .…”

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confidence: 99%

“…Due to their habitat choice they are often caught in demersal fisheries as bycatch, however targeted fisheries for these species also exist 47,48 . The exposure of microplastics to demersal shark species globally, is currently poorly investigated, with only a few reports of plastic ingestion, mostly situated in and around the Mediterranean Sea 22,[36][37][38]49,50 . There have, however, been multiple studies of plastic ingestion in bony fish in the region, with ingestion rates varying from 1 to 47% across the species 22,[51][52][53][54] .…”

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confidence: 99%

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Investigating the presence of microplastics in demersal sharks of the North-East Atlantic

Parton

Godley

Santillo

et al. 2020

Sci Rep

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Microplastic pollution is ubiquitous in the marine environment and is ingested by numerous marine species. Sharks are an understudied group regarding their susceptibility to microplastic ingestion. Here, we provide evidence of ingestion of microplastic and other anthropogenic fibres in four demersal sharks species found in the waters of the United Kingdom and investigate whether body burdens of contamination vary according to species, sex or size. Sharks were collected from the northEast Atlantic. Stomachs and digestive tracts of 46 sharks of 4 species were examined and 67% of samples contained at least one contaminant particle. Although we acknowledge modest sample size, estimated particle burden increased with body size but did not vary systematically with sex or species. A total of 379 particles were identified, leading to median estimates ranging from 2 to 7.5 ingested contaminants per animal for the 4 species. The majority were fibrous in nature (95%) and blue (88%) or black (9%) in colour. A subsample of contaminants (N = 62) were subject to FT-IR spectroscopy and polymers identified as: synthetic cellulose (33.3%), polypropylene (25%), polyacrylamides (10%) and polyester (8.3%). The level of risk posed to shark species by this level of contamination is unknown. Nevertheless, this study presents the first empirical evidence and an important baseline for ingestion of microplastics and other anthropogenic fibres in native UK shark species and highlights the pervasive nature of these pollutants. plastics in the marine environment. Research on plastic in the marine environment has accelerated rapidly in the last decade, with numerous publications describing its impact on ecosystems and marine taxa 1-7. It is estimated that between 4.8 and 12.7 million tonnes of plastic enter the oceans every year from a variety of sources 6. Plastic is a popular material due to its durability, low production cost and efficiency in its uses 8. It is these properties, alongside its often disposable nature that leads to its prevalence in the environment for many years 9. Microplastics (defined as plastic particles < 5 mm) 10 are ubiquitous in the marine environment 11-13. Despite this knowledge, quantitative assessments of their abundance are still fairly limited 14 , although some estimates place their abundance at 5.25 trillion particles globally, weighing in at over 250,000 tonnes 5. Microplastics, in the form of fibres, fragments or beads/spheres, assimilate in the marine ecosystem via multiple avenues. Larger pieces of plastic can disintegrate over time due to UV radiation exposure, wave action and physical abrasion, eventually fragmenting into microscopic particles 15. Microplastics are also found in many everyday items used by humans including cosmetic products and can be produced by clothing wear 16-19. These can then reach the oceans via wastewater treatment plants 20. ingestion of microplastics in marine species. Ingestion of microplastics is reported in many marine species including turtles, marine mammals and fish 1,21...

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Section: Discussionmentioning

confidence: 57%

Section: Discussionmentioning

confidence: 57%

mentioning

confidence: 99%

mentioning

confidence: 99%

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Investigating the presence of microplastics in demersal sharks of the North-East Atlantic

Parton

Godley

Santillo

et al. 2020

Sci Rep

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“…Los MP también están en el aire, pero es más difícil la contaminación por esta vía, debido a que se cuenta con los vellos nasales que no permiten el ingreso directo de los MP (Smith et al, 2018). Aún no hay estimaciones sobre la cantidad de MP que pueda generar un problema grave de salud al hombre, al ser expulsados por las heces o exista una translocación a cualquier sistema como circulatorio o respiratorio (Prata et al, 2019).…”

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Estandarización De Un Protocolo Para Evaluar Microplásticos en Bivalvos Marinos en El Departamento De Lima, Perú

Valencia-Velasco¹,

Guabloche-Zuñiga²,

Alvariño³

et al. 2020

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La cantidad de microplásticos (MP) que son arrojados en el mar va aumentando considerablemente, los que afectan a los animales marinos, y sobre todo a los invertebrados. Los MP representan una amenaza para la inocuidad alimentaria. Se estandarizó un protocolo para evaluar MP en los bivalvos marinos Choromytilus chorus (Molina, 1782) y Aulacomya atra (Molina, 1782) en el departamento de Lima, Perú. Los bivalvos fueron obtenidos del Terminal Pesquero de Ancón, Lima, Perú. En la primera etapa de la estandarización se usó a C. chorus, determinando cuál fue el procedimiento más eficaz en la digestión de la materia orgánica con peróxido de hidrogeno (H O ), y en la flotación y filtración de los MP. Durante la 2 2 digestión con H O el envase más adecuado fue la botella de vidrio transparente de 1 L con 2 cm de 2 2 abertura y 25 cm de altura. El volumen de H O al 30% que permitió la mejor digestión de la materia 2 2 orgánica (MO) al 99% en C. chorus fue 18 g de MO en 200 mL de H O . El baño maría fue más eficaz que 2 2 el oscilador magnético, púes permitió evaluar un mayor número de muestras, con oscilación y temperatura constante hasta las 48 h de digestión. Durante la flotación y filtración de MP, se llenó hastalos ¾ una botella de un L con solución salina saturada, luego se empleó una pipeta volumétrica de vidrio de 10 mL para extraer el sobrenadante y finalmente se vació el contenido en una placa Petri de vidrio, mostrando ser el mejor método para la extracción de MP. En la segunda etapa, se caracterizaron los MP para ambas especies de bivalvos obteniéndose dos tipos: fibras que son las más abundantes, con color rojo, azul y blanco, y pellets de color amarillo y blanco. Las concentraciones de MP fueron de 1,91±0,11 ítems·g-1 y 1,64±0,08 ítems·g-1 para C. chorus y A. atra, respectivamente. La estandarización de este protocolo resultó óptima para las condiciones del laboratorio, obteniendo una buena observación y clasificación de los MP, lo que permitirá que otros investigadores puedan utilizar este protocolo, tomando en cuenta que aún no hay estudios en estos dos invertebrados en el Perú.

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Movement patterns of a Critically Endangered elasmobranch (Dipturus intermedius) in a Marine Protected Area

Lavender

Aleynik

Dodd

et al. 2021

Aquatic Conservation

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Marine Protected Areas (MPAs) are widely used in marine management, but for mobile species understanding the spatio‐temporal scale of management measures that is required to deliver conservation benefits depends on a detailed knowledge of species’ movements that is often lacking. This is especially the case for species of skate (Rajidae) for which relatively few movement studies have been conducted. In Scotland, the Loch Sunart to the Sound of Jura MPA covering 741 km2 has been designated for the conservation of the Critically Endangered flapper skate (Dipturus intermedius), but fine‐scale movements within this area remain poorly understood. A passive acoustic telemetry study which coupled acoustic tagging of 42 individuals and a static array of 58 receivers was conducted from March 2016 to June 2017. Using acoustic detection time series, angler capture–recapture data and depth time series from archival tags, fine‐scale movements of individuals were investigated. Overall, 33 of the 42 tagged individuals were detected. Residency, site fidelity and transiency were documented. Residency around receivers, lasting from 3 to more than 12 months, was documented in 16 acoustically detected individuals (48%) and all life‐history categories, but was most noticeable among females. Acoustic detections were associated with depth, salinity and season, but there was no evidence that individuals formed close‐knit groups in the areas in which they were detected. Taken together with historical occurrence records of flapper skate, the prevalence and scale of residency documented here suggest that the MPA is sufficiently large to benefit a notable percentage (38 [24–52]%) of skate found in the study area over monthly and seasonal timescales. This result strengthens the case for the use of MPAs to support the conservation of flapper skate and other skate species that display similar movement patterns in areas of high local abundance.

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Plastic ingestion by Scyliorhinus canicula trawl captured in the North Sea

Cited by 40 publications

References 17 publications

Investigating the presence of microplastics in demersal sharks of the North-East Atlantic

Investigating the presence of microplastics in demersal sharks of the North-East Atlantic

Estandarización De Un Protocolo Para Evaluar Microplásticos en Bivalvos Marinos en El Departamento De Lima, Perú

Movement patterns of a Critically Endangered elasmobranch (Dipturus intermedius) in a Marine Protected Area

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