| Food I | Food II | Food III | Food name | Country | Predator Stage |
|---|---|---|---|---|---|
| detritus | detritus | debris | unidentified | USA | adults |
| plants | other plants | benthic algae/weeds | unidentified | USA | adults |
| zoobenthos | benth. crust. | amphipods | unidentified amphipods | Canada | adults |
| zoobenthos | benth. crust. | amphipods | Hyalella sp. | USA | juv./adults |
| zoobenthos | benth. crust. | n.a./other benth. crustaceans | Bosmina | USA | juv./adults |
| zoobenthos | benth. crust. | n.a./other benth. crustaceans | unidentified crustaceans | USA | juv./adults |
| zoobenthos | benth. crust. | n.a./other benth. crustaceans | Daphnia sp. | USA | juv./adults |
| zoobenthos | benth. crust. | ostracods | unidentified ostracods | Canada | adults |
| zoobenthos | insects | insects | unidentified | USA | adults |
| zoobenthos | insects | insects | Chaoborus sp. | Canada | adults |
| zoobenthos | insects | insects | unidentified chironomids | Canada | adults |
| zoobenthos | mollusks | n.a./other mollusks | unidentified mollusks | Canada | adults |
| zoobenthos | other benth. invertebrates | n.a./other benth. invertebrates | Bryozoan statoblasts | Canada | adults |
| zoobenthos | worms | n.a./other annelids | cocoons of annelida | Canada | adults |
| zooplankton | other plank. invertebrates | n.a./other plank. Invertebrates | unidentified | USA | adults |
| zooplankton | plank. crust. | cladocerans | unidentified cladocerans | USA | juv./adults |
| zooplankton | plank. crust. | cladocerans | unidentified cladocerans | Canada | adults |
| zooplankton | plank. crust. | plank. copepods | unidentified copepods | Canada | adults |