Table 1.
Detection frequency for avian schistosome species and host snails (genus level) for each of the sampled lakes
| Region | Lake | Method | Snail genera | Avian schistosomes | |||||
|---|---|---|---|---|---|---|---|---|---|
| Gyraulus | Lymnaea | Physa | Planorbella | T. stagnicolae | T. physellae | Avian schist. C. | |||
| North | Bellaire | Q | 2/3 | 3/3a | 2/3 | 3/3 | 16/22 | 0/22 | 1/22 |
| Big Platte | Q | 2/12 | 4/12 | 9/12 | 3/12 | 6/17 | 3/17 | 2/17 | |
| Charlevoix | Q | 5/6 | 4/6 | 6/6 | 3/6 | 1/1 | 1/1 | – | |
| Crooked (Emmet Co.) | Q | 1/3 | 2/3 | 1/3 | 3/3 | 2/9 | 0/9 | 4/9 | |
| Elk | Q | 1/5 | 5/5 | 4/5 | 4/5 | 18/29 | 5/29 | 12/28 | |
| Glen | – | – | – | – | – | 49/130 | 14/130 | 27/130 | |
| Intermediate | Q | 5/12 | 5/12 | 9/12 | 6/12 | 7/12 | 2/12 | 5/12 | |
| Leelanau – North | Q | 4/6 | 6/6 | 4/6 | 4/6 | 20/67 | 6/67 | 11/65 | |
| Leelanau – South | Q | 0/6 | 6/6 | 5/6 | 4/6 | 12/65 | 12/65 | 33/65 | |
| Lime | Q | 2/2 | 2/2a | 1/2 | 1/2 | – | – | – | |
| Long | Q | 3/6 | 1/6 | 6/6 | 6/6 | 0/41 | 0/41 | 4/40 | |
| Pickerel | Q | 2/3 | 3/3a | 2/3 | 3/3 | 2/10 | 0/10 | 3/10 | |
| Skegemog | Q | 0/4 | 4/4 | 4/4 | 4/4 | 7/12 | 0/12 | 7/11 | |
| Torch | – | – | – | – | – | 5/21 | 0/21 | 4/21 | |
| Walloon | Q | 2/6 | 6/6a | 6/6 | 6/6 | 50/129 | 18/129 | 69/129 | |
| Middle | Big | Q,T | 0/2 | 0/2 | 0/2 | 0/2 | 0/2 | 0/2 | 0/2 |
| Bills | Q,T | 0/1 | 0/1 | 0/1 | 0/1 | 0/1 | 0/1 | 0/1 | |
| Cadillac | Q,P,T | 0/4 | 0/4 | 1/4 | 0/4 | 0/4 | 0/4 | 0/4 | |
| Crooked (Missaukee Co.) | Q,P,T | 0/4 | 0/4 | 2/4 | 4/4 | 0/4 | 0/4 | 0/4 | |
| Duck (Muskegon Co.) | Q,T | 0/2 | 0/2 | 0/2 | 1/2 | 0/2 | 0/2 | 0/2 | |
| Fremont | Q,T | 0/2 | 0/2 | 0/2 | 0/2 | 1/2b | 0/2 | 0/2 | |
| Haithco | Q,T | 0/2 | 0/2 | 0/2 | 1/2 | 0/2 | 0/2 | 0/2 | |
| Mecosta | Q,P,T | 0/1 | 0/1 | 0/1 | 0/1 | 0/1 | 0/1 | 0/1 | |
| Missaukee | Q,T | 0/4 | 0/4 | 2/4 | 3/4 | 0/4 | 0/4 | 1/4 | |
| Mitchell | Q,T | 0/2 | 0/2 | 0/2 | 0/2 | 0/2 | 0/2 | 0/2 | |
| Rose | Q,T | 0/2 | 0/2 | 0/2 | 0/2 | 0/2 | 0/2 | 0/2 | |
| Round | Q,T | 0/2 | 0/2 | 0/2 | 0/2 | 0/2 | 0/2 | 0/2 | |
| Sapphire | Q,T | 0/2 | 0/2 | 0/2 | 0/2 | 0/2 | 0/2 | 0/2 | |
| White | Q,P,T | 0/1 | 0/1 | 0/1 | 0/1 | 0/1 | 0/1 | 0/1 | |
| South | Clark | Q,T | 0/2 | 0/2 | 0/2 | 1/2 | 0/2 | 0/2 | 0/2 |
| Corey | Q,T | 0/4 | 0/4 | 0/4 | 4/4 | 0/4 | 0/4 | 1/4 | |
| Devils | Q,P,T | 0/4 | 0/4 | 1/4 | 2/4 | 0/3 | 0/3 | 0/3 | |
| Duck (Calhoun Co.) | Q,P,T | 0/4 | 0/4 | 1/4 | 0/4 | 0/4 | 1/4 | 4/4b | |
| Evans | Q,T | 0/2 | 0/2 | 0/2 | 1/2 | 0/2 | 0/2 | 0/2 | |
| Gull | Q,T | 0/2 | 0/2 | 1/2 | 0/2 | 0/2 | 0/2 | 0/2 | |
| Gun | Q,T | 0/4 | 0/4 | 0/4 | 0/4 | 0/4 | 0/4 | 0/4 | |
| Klinger | Q,T | 0/4 | 2/4 | 3/4 | 3/4 | 0/4 | 0/4 | 0/4 | |
| Lotus | Q,T | 0/4 | 0/4 | 0/4 | 2/4 | 1/4b | 0/4 | 1/4 | |
| Maceday | Q,P,T | 0/4 | 0/4 | 0/4 | 2/4 | 0/4 | 0/4 | 1/4 | |
| Sylvan | Q,T | 0/2 | 0/2 | 0/2 | 0/2 | 0/2 | 0/2 | 1/2b | |
| Upper Straits | Q,P,T | 0/2 | 0/2 | 0/2 | 2/2 | 0/2 | 0/2 | 0/2 | |
| Vineyard | Q,T | 0/2 | 0/2 | 0/2 | 0/2 | 0/2 | 0/2 | 0/2 | |
| Wintergreen | Q,P,T | 0/2 | 0/2 | 2/2 | 2/2 | 0/2 | 0/2 | 0/2 | |
Method indicates which sampling methods were used to survey for snails, as described in the main text: Q (visual quadrat), P (pipe sampling) and T (targeted search). The data are presented as the number of sites where that species was detected/total number of sites sampled at that lake surveyed for snails or conducted species-specific qPCR. Note that there are some lakes where a snail survey was not conducted, species-specific qPCR was not run for 1 or more species of parasite, and that on some lakes we sampled different sites for snails and parasites resulting in mismatched site numbers. Some of the data for Glen Lake, NL Leelanau, SL Leelanau and Walloon Lake were previously published by Rudko et al. (2022).
Lymnaea stagnalis was detected at 1 or more sites along with Lymnaea catescopium ( = Stagnicola emarginata).
An avian schistosome species was detected at a site, but the corresponding host snail was not detected.