First record of microplastic contamination in endemic Amazonian anurans: Can the size and behavior of species influence contamination?
Microplastic (MP) weste, due to their high dispersion and bioaccumulation rates, have been identified in various animal groups, such as anuran amphibians during both larval and adult stages. However, current studies on adult anuran amphibians focus on assessing only one exposure route, the digestive system, while other routes remain underestimated. Therefore, this present study aimed to evaluate the degree of contamination in the digestive, respiratory, and integumentary systems, in situ, of two endemic Amazonian adult anuran species (textitPhysalaemus ephippifer and textitBoana multifasciata). From this, we identified and characterized microplastic particles for each exposure route, assessed the effects of morphometric measures on the total MP contamination level and in the gastrointestinal tract (GIT). Additionally, we determined different contamination indices and how they vary according to species and systems. Based on our data, the digestive and integumentary exposure routes showed the highest contamination levels for both species. Additionally, variations in MP contamination levels indicated that textitP. ephippifer had a higher level of MP contamination. Thus, this study provides the first evidence of microplastic exposure through respiratory and integumentary routes in adult anurans in situ, and it is the first to identify MP contamination in terrestrial biomonitors in the Amazon.
Citação
@online{maria_luiza_cunha_e2024,
author = {Maria Luiza Cunha e , Souza-Ferreira},
title = {First record of microplastic contamination in endemic
Amazonian anurans: Can the size and behavior of species influence
contamination?},
date = {2024-01-01},
doi = {10.6084/M9.FIGSHARE.26064448.V1},
langid = {pt-BR},
abstract = {Microplastic (MP) weste, due to their high dispersion and
bioaccumulation rates, have been identified in various animal
groups, such as anuran amphibians during both larval and adult
stages. However, current studies on adult anuran amphibians focus on
assessing only one exposure route, the digestive system, while other
routes remain underestimated. Therefore, this present study aimed to
evaluate the degree of contamination in the digestive, respiratory,
and integumentary systems, in situ, of two endemic Amazonian adult
anuran species (textitPhysalaemus ephippifer and textitBoana
multifasciata). From this, we identified and characterized
microplastic particles for each exposure route, assessed the effects
of morphometric measures on the total MP contamination level and in
the gastrointestinal tract (GIT). Additionally, we determined
different contamination indices and how they vary according to
species and systems. Based on our data, the digestive and
integumentary exposure routes showed the highest contamination
levels for both species. Additionally, variations in MP
contamination levels indicated that textitP. ephippifer had a higher
level of MP contamination. Thus, this study provides the first
evidence of microplastic exposure through respiratory and
integumentary routes in adult anurans in situ, and it is the first
to identify MP contamination in terrestrial biomonitors in the
Amazon.}
}