No evidence of microplastic consumption by the copepod, Temora longicornis (Müller, 1785) in Chichester Harbour, United Kingdom

Outram, Lily; Hurley, Jessica; Rott, Anja S.; Crooks, Neil; Pernetta, Angelo P.

doi:10.1590/2358-2936e2020033

Cited by 10 publications

(10 citation statements)

References 36 publications

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“…Since virgin MPs do not generate any of these cues, the detection and capture of MPs are expected to be low, which could explain the low ingestion of MPs observed in the studied cruising feeder. Our results agree with findings from field studies, which indicate a low occurrence of MP ingestion in natural zooplankton communities. − , …”

Section: Discussionsupporting

confidence: 90%

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The Behavior of Planktonic Copepods Minimizes the Entry of Microplastics in Marine Food Webs

Rodríguez-Torres

Almeda

et al. 2022

Environ. Sci. Technol.

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The entry of microplastics (MPs) into marine food webs is a major environmental concern. We investigated how the behavior of planktonic copepods influences the risk of MPs to enter marine food webs by applying a trait-based approach and by combining experiments (bottle incubations and video observations) with biogeographical analyses. We aimed to evaluate which type of feeding behavior is most risky in terms of MP ingestion and which marine geographical areas are more susceptible to MP ingestion by planktonic copepods. We used different species as models of the main foraging behaviors in planktonic copepods: feeding-current, cruising, ambush, and mixed behavior feeding. All behaviors showed a similarly low risk of MP ingestion, up to 1 order of magnitude lower than for similar-sized microalgae. We did not observe any influence of the prey type or MP size (8 and 20 μm) on MP ingestion for any of the behaviors. By mapping the global distribution of feeding behaviors, we showed that feeding-current feeding is the most common behavior, but the risk of MP ingestion remains equally low across the global ocean, independently of the predominant behavior. Overall, our results suggest a low risk of MP ingestion by planktonic copepods and therefore a minimal risk of trophic transfer of MPs via marine pelagic copepods in marine ecosystems.

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Section: Discussionsupporting

confidence: 90%

“…Our results agree with findings from field studies, which indicate a low occurrence of MP ingestion in natural zooplankton communities. [14][15][16][17]48 4.2. Influence of Prey Type on Behavior and MP Ingestion in the Mixed Behavior Feeder.…”

Section: Discussionmentioning

confidence: 99%

The Behavior of Planktonic Copepods Minimizes the Entry of Microplastics in Marine Food Webs

Rodríguez-Torres

Almeda

et al. 2022

Environ. Sci. Technol.

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“…However, although filter feeding was hypothesized to be the riskier foraging behavior in terms of microplastic ingestion, our results indicate that feeding-current feeding copepods are very efficiently discriminating microplastics, reducing the risk of ingestion and the entry of microplastics into marine food webs. Recent field studies support the low risk of ingestion of microplastics by planktonic copepods. ,, …”

Section: Discussionmentioning

confidence: 94%

“…21,70,71 Ingestion of Microplastics by Planktonic Copepods in the Natural Environment Is Expected To Be Much Lower than…”

mentioning

confidence: 99%

Unpalatable Plastic: Efficient Taste Discrimination of Microplastics in Planktonic Copepods

Rodríguez-Torres

Rist

et al. 2022

Environ. Sci. Technol.

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Planktonic copepods are the most abundant animals in the ocean and key players in global biochemical processes. Recent modeling suggests that zooplankton ingestion of microplastics (MPs) can disrupt the biological carbon pump and accelerate a global loss of oceanic oxygen. Here we investigate the behavioral responses and ingestion rates of a model feeding-current generating copepod when exposed to microplastics of different characteristics by small-scale video observations and bottle incubations. We found that copepods rejected 80% of the microplastics after touching them with their mouth parts, in essence exhibiting a kind of taste discrimination. High rejection rates of microplastics were independent of polymer type, shape, presence of biofilms, or sorbed pollutant (pyrene), indicating that microplastics are unpalatable for feeding-current feeding copepods and that post-capture taste discrimination is a main sensorial mechanism in the rejection of microplastics. In an ecological context, taking into account the behaviors of planktonic copepods and the concentrations of microplastics found in marine waters, our results suggest a low risk of microplastic ingestion by zooplankton and a low impact of microplastics on the vertical exportation of fecal pellets.

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“…Em outro estudo, realizado em Chichester Harbour-Reino Unido-os cientistas observaram a ampla presença de MPS no mar, sendo observadas partículas em todas as amostras analisadas, provenientes de três locais diferentes de coleta, com uma concentração média de 8,2 partículas por m 3 de água do mar amostrada (Outram et al, 2020). Da mesma forma, tais substâncias estavam presentes no maior lago do interior da China, o Lago Qinghai (Xiong et al, 2018), sendo também encontrados em partes profundas do oceano, como as Fossas Marianas (Peng et al 2018).…”

Section: Discussionunclassified

Microplásticos e Nanoplásticos e sua relevância na saúde humana: uma revisão de literatura

Bugatti

Almeida²,

Guimarães³

et al. 2023

RSD

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Os fragmentos plásticos, mais especificamente os microplásticos (MPS) e nanoplásticos (NPS), estão presentes e são produzidos em grandes quantidades e em escalas mundiais. São encontrados em praticamente todos os lugares como na água do mar, nos alimentos e no ar. Desse modo, visto as formas de contato humano como o próprio consumo ou a respiração e efeitos biológicos, efeitos químicos e efeitos físicos desses fragmentos, torna-se necessária a discussão acerca da relevância e dos possíveis efeitos desse material no corpo dos indivíduos. Assim, este estudo se propõe a entender a possível relação entre efeitos danosos ao organismo causados pelo contato com tais fragmentos plásticos, observando seus efeitos. Utilizando a revisão exploratória integrativa de literatura foram utilizados 22 artigos, sendo excluídos oito artigos devido ao não pertencimento aos critérios de inclusão. O consumo de MPS e NPS pode induzir a efeitos danosos nos organismos seja por meio de fenômenos físicos com químicos ou biológicos. No primeiro, nota-se a associação a barreiras físicas que induzem processos de inflamação. Já o papel biológico aborda a associação de Microplásticos (MPS) com alguns seres possivelmente patógenos ao ser humano. Por fim, o papel químico relacionado com o fenômeno da adsorção de substâncias nocivas mostra-se gerador de possível malefício. Logo, revela-se essencial a realização de novos estudos sobre os efeitos dos MPS e dos NPS nos seres humano, decorrentes de sua elevada abrangência em escala mundial e o relato de que embora haja poucos estudos realizados recentemente, estes apresentam quadros alarmantes sobre a ação danosa desses compostos para o ser humano.

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No evidence of microplastic consumption by the copepod, Temora longicornis (Müller, 1785) in Chichester Harbour, United Kingdom

Abstract: All content of the journal, except where identified, is licensed under a Creative Commons attribution-type BY.

Cited by 10 publications

References 36 publications

The Behavior of Planktonic Copepods Minimizes the Entry of Microplastics in Marine Food Webs

The Behavior of Planktonic Copepods Minimizes the Entry of Microplastics in Marine Food Webs

Unpalatable Plastic: Efficient Taste Discrimination of Microplastics in Planktonic Copepods

Microplásticos e Nanoplásticos e sua relevância na saúde humana: uma revisão de literatura

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