Table 1 Summary of Great Lakes fish species gut, skin, and water samples. We provide a description of taxonomy and feeding guild of the host species as well as where the fish were sampled. The number of samples included in our analyses is shown for both skin and gut samples (and total number for each fish species) after quality filtering and rarefaction

Alosa

pseudoharengus

Alewife

Planktivore

Pelagic

-

-

-

-

20

21

41

Aplodinotus

grunniens

Freshwater Drum

Invertivore

Benthic

1

5

17

16

10

10

59

Ambloplites

rupestris

Rock Bass

Invertivore

Benthopelagic

3

7

-

-

3

3

16

Catostomus

commersonii

White Sucker

Invertivore/detritivore

Benthic

5

9

-

-

2

2

18

Cyprinella

spiloptera

Spotfin Shiner

Invertivore/herbivore

Benthopelagic

12

11

-

-

-

-

23

Dorosoma

cepedianum

American Gizzard Shad

Herbivore

Pelagic

9

10

-

-

2

2

23

Labidesthes

sicculus

Brook Silverside

Planktivore / invertivore

Pelagic

7

7

-

-

-

-

14

Lepomis

gibbosus

Pumpkinseed

Invertivore

Benthopelagic

5

10

-

-

5

5

25

Morone

americana

White Perch

Invertivore/carnivores

Benthopelagic

-

-

21

21

11

12

65

Morone

chrysops

White Bass

Invertivore

Benthopelagic

-

-

10

10

10

11

41

Neogobius

melanostomus

Round Goby

Invertivore

Benthic

-

8

8

16

16

48

Notropis

atherinoides

Emerald Shiner

Planktivore

Benthopelagic

5

15

-

-

-

-

20

Notropis

heterolepis

Blacknose Shiner

Invertivore/herbivore

Benthopelagic

11

8

-

-

-

-

19

Perca

flavescens

Yellow Perch

Invertivore

Benthopelagic

10

10

15

15

15

16

81

Salmo

trutta

Brown Trout

Piscivore

Benthopelagic

-

-

-

-

16

16

32

Salvelinus

namaycush

Lake Trout

Piscivore

Benthopelagic

-

-

-

-

22

22

44

Sander

vitreus

Walleye

piscivore

Benthopelagic

-

-

19

19

6

7

51

-

-

Water samples

-

3

-

2

-

5

-

10