Microplastic pollution in the food web: observation of ingestion by the talitrid amphipod Cryptorchestia garbinii on the shores of Lake Garda

Figures & data

Figure 1. Population density (people per square kilometer) and sampling sites.

Figure 2. Cryptorchestia garbinii, above a male specimen, below a female.

Figure 3. Microscope images of microplastics on a filter stained with Nile red, in green fluorescence (ex. 450–490; em 515–565 nm) (left) and brightfield (right), with measurements.

Figure 4. Size categories of microplastics ingested by Cryptorchestia garbinii in all sites.

Table I. Microplastic particles size measured in μm as length (the longest dimension) and width (perpendicular to the length).

	BAR	LUG	RIVA	TOS
Lenght	74.57	66.02	57.60	26.69
SD	85.92	82.58	57.32	16.70
Width	33.09	30.12	30.48	2.56
SD	33.95	27.87	22.53	4.90
Min	11.78	2.61	14.36	3.28
Max	661.34	343.86	706.16	202.28

Figure 5. Images of fiber observed on a filter stained with Nile red, in green fluorescence (ex. 450–490; em 515–565 nm) (left) and brightfield (right).

Figure 6. a Fibers’ abundance per site; b Percentage of fibers per site on the total detected.

Figure 7. Average number of MPs ingested per specimen (± standard error) by sampling site. Different letters indicate significant differences according to t test (P ≤ 0.05).