Table 3 Results of PERMANOVA concerning the analysis of MP, considering the species (Boana multifasciata and Physalaemus ephippifer) and the systems (integument, respiratory tract, and gastrointestinal tract) as predictor variables.

From: First record of microplastic contamination in adult endemic amazonian anuran species

Variables

Absolute values of MP

MP weighted by mass

df

R2

F*

p

df

R2

F*

p

Specie

1

0.014

2.585

0.101

1

0.094

17.013

< 0.001

System

2

0.057

5.022

< 0.001

2

0.023

2.162

0.105

Specie x system

2

0.009

0.799

0.462

2

0.002

0.229

0.806

Residuals

175

0.919

-

-

175

0.879

-

-

Total

180

1.000

-

-

180

1.000

-

-

  1. Results obtained from the absolute values of MP contamination for each system and values of MP weighted by total mass for each system, analyzed separately. Df: degrees of freedom. R2: correlation coefficient. F*: Pseud Fisher F. values in bold showed significant difference for mean analysis (p < 0.05).
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