Visual comparison of microplastic counts in lavage and gastrointestinal tract samples of cowbirds.

R. Keith Andringa (22486269); Nicholas A. Bruni (22486272); Jennifer A. Smith (7726103); Heather L. Prestridge (3338265); Ryan Thornton (22486275); Jacquelyn K. Grace (4687531)

doi:10.1371/journal.pone.0334891.g003

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Visual comparison of microplastic counts in lavage and gastrointestinal tract samples of cowbirds.

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R. Keith Andringa (22486269), Nicholas A. Bruni (22486272), Jennifer A. Smith (7726103), Heather L. Prestridge (3338265), Ryan Thornton (22486275), Jacquelyn K. Grace (4687531)

Summary

Researchers compared microplastic counts recovered from gastric lavage samples against those found in dissected gastrointestinal tracts of cowbirds, demonstrating the relationship between lavage recovery rates and total microplastic burden per individual bird.

Body Systems

Digestive

(A) Relationship between the total number of microplastics recovered from lavage samples and the number of microplastics present in dissected gastrointestinal tracts of the same individuals. Each point represents one bird; the solid line shows the best-fit linear regression between the two measures. (B) Individual recovery rates for lavage samples, calculated as the proportion of microplastics recovered relative to the total count per bird.

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