Studies on the heterophyid trematode Apophallus brevis, the "sand-grain grub" of yellow perch (Perca flavescens). II. The metacercaria: position, structure, and composition of the cyst; hosts; geographical distribution and variation.
D000818:Animals; D004463:Ecology; D005393:Fish Diseases / Q000473:pathology*; D005399:Fishes; D009656:North America; D014201:Trematode Infections / Q000473:pathology / Q000662:veterinary*