FOOD OF THE SHORE FISHES OF CERTAIN WISCONSIN LAKES. 



289 



Table 4. — Showing Foods Eaten by Four Species op Fishes Collected Together at Sta- 

 tion 28, September 17, 1915- 



Name. 



-i. 





Amiatus calva 



Ameiurus melas 



Esox lucius 



Pomoxis sparoides 



Number of fish eating. 



469-7 



124.7 



45I-S 



77.2 



48.5 



Ameiurus melas 



Pomoxis sparoides 



Number of fish eating. 



124.7 

 77.2 



Table 5. — Variation of Foods at Different Places and Times, in Collections Made During 



1915- 



Species. 



Abramis crysoleucas 



Ambloplites rupestris. . . . 



Ameiurus melas 



Ameiurus nebulosus 



Amiatus calva 



Boleosoma nigrum 



Catostomus commersonii 



Cottus ictaiops 



Cyprinus carpio 



Esox lucius 



Etheostoraa flabellare. . . . 



Etheostoma iowae 



Eucalia inconstans 



Eupotnotis gibbosus 



Fimdulus diaphanus me- 

 nona. 



Lahidesthes sicculus 



Lepisosteus osseus 



Lepomis incisor 



Micropterus dolomieu. , 

 Micropterus salmoides. 



Notropis heterodon 



Perca flavescens . 



Percina caprodes . . . . 

 Pimephales notatus. 



Pimephales promelas. . . 



Pomoxis sparoides 



Roccus chrysops 



Salmoirideus 



Salvelinus fontinalis 



Schilbeodes gyrinus. . . . 

 Schizostedium vitreimi. 

 Umbra limi 



Total., 



Chief items of food eaten. 



Cladocera (s). Hyalella, Cyclops 



Crayfish (s) May-fly nymphs, oligochaetes, caddis-fly larvae, chiron- 



oujid larvse (3), chironomtd pupae (2). 



Chironomid larvae, caterpillar snails, oligochsetes 



Ostracods. adult insects, amphipods 



Crayfish, fish remains (2) 



Chironomid larvse (8), oligochsetes (3) 



Chironomid larvae, Ostracods, Cyclops (2) 



Hyalella (10), Dikerogammarus 



Chironomid larvae, Ostracods, Hyalella, plant remains 



Hyalella (2), fish remains 



Chironomid larvae, Hyalella 



Hyalella 



Chironomid larvse (2), Chydorus, fine debris 



Toad eggs, Sialis larvse, chironomid larvae, Hyalella, Ceratophyllum. 

 Chironomid larvse (5), amphipods (4), Ostracods (2), oligochstes, 



cladocera, fine debris. 



Chironomid pupa (.5), Cladocera (2), Chironomid adult (2) , 



Fish remains 



Chironomid larvse (6), amphipods (?), chironomid pupae (2), snails, 



fine debris, Aphanothece, copepods. cladocera. 



Insect larvae (2). fish remains, adult insect 



Adult insects (4), amohipods (2), copepods, cladocera. fish remains, 



insect larvse. plant remains, crayfish. 

 Chironomid larvae (2). copepods (2), cladocera (2), chironomid pupae. 



chironomid adult, oligochaetes. filamentous algae. 

 Hyalella (3), cladocerans (3), insect larvse (3), insect adults, fish 



remains. 



Chironomid larvse (3), fish eggs 



Filamentous algse (3), oligochaetes, chironomid larvx, chironomid 



adult, cladocerans. fine debris. 



Chironomid larvae 



Fish remains, chironomid pupse, adult insect, Ostracods. daphnia. . . 

 Copepods (4), chimomid larvae, insect adult:, fish remains, cladocera. 



Amphipods 



Chironomid pupae, amphipods 



Insect larvae (3). adult insect, amphipods, cladocera, oligochaetes. . . . 



Fish remains (2), fish, and frogs 



Ostracods (2). amphipods (2), chironomid larvee (2), earthworm, 



plant remains. 



Number 

 locahties. 



Number 

 times col- 

 lected. 



Number 

 of chief 

 foods. 



