Table 4 Overview of comparable snail–trematode diversity and overall prevalence

West coast of Eyjafjordur, North Iceland

1519

14

7

n/a

Sannia et al. [82]

Porma river basin, Spain

6291

1

3

15.50%

Manga-González et al. [83]

River and reservior, Poland

1510

n/a

6

32.60%

Jeżewski [84]

Two fishponds and one swamp in Czech Republic

2802

12

28

33.90%

Faltýnková [32]

Rivers, ponds and lakes in Germany

6403

15

29

4.90%

Faltýnková et al. [36]

Lake Konnevesi in central Finland

3628

n/a

24

26.30%

Faltýnková et al. [85]

29 lakes in Poland

10581

6

25

46.50%

Żbikowska [47]

Forest biocoenoses of Ukrainian Polissia Nature Reserve

n/a

14

26

n/a

Zhytova et al. [6]

Rivers Lippe and Rhine in North Rhine-Westphalia, Germany

682

1

20

12.90%

Schwelm et al. [86]

Interconnected Ruhr lake system, Germany

5347

6

36

19.60%

Selbach et al. [29]

21 freshwater lakes, Denmark

5657

10

21

12.60%

Present study