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. 2023 Nov 27;30(60):125846–125865. doi: 10.1007/s11356-023-30855-4

Table 2.

Measurement of the weight (mg), body length (mm), head capsule width (mm), head capsule length (mm), and mentum width (mm) and characterization of MPs in the second (L2) and fourth (L4) instar larvae of Chironomus sp. (mean ± SD)

Stage The mean weight of individual (mg) Mean body length (mm) Mean head capsule width (mm) Mean head capsule length (mm) Mean mentum width (mm) Mean MPs particles/individual The mean length of MPs (µm)
Second instar (L2) 4.8 ± 1.2 3.2 ± 0.5 0.21 ± 0.0.1 0.213 ± 0.022 0.059 ± 0.004 0.52 ± 0.11 Fibers 422 ± 84
Fourth instar (L4) 8.6 ± 2.4 14.8 ± 6.3 0.69 ± 0.15 0.37 ± 0.041 0.162 ± 0.013 0.91 ± 0.2 Fibers 937 ± 120
Fragments 73 ± 20