title: Proterometra autraini n. sp. (Digenea: Azygiidae) from Michigan's upper peninsula and a key to species of Proterometra.
abstract: Life stages of Proterometra autraini n. sp. (Digenea: Azygiidae) from the Au Train River, Au Train, Michigan are described, with emphasis on the cercarial stage. Progenetic cercariae develop in rediae in the snail Elimia livescens and emerge seasonally from mid-summer to mid-autumn. Cercariae emerge naturally between 1000 and 2100 hr EDT. Adults were retrieved from several naturally infected fish species. Specimens of Cottus bairdi (n = 16) displayed the greatest prevalence (75%), mean intensity (7.1), and abundance (5.3) of infection. Experimental infections were successful in C. bairdi, Lepomis macrochirus, and Perca flavescens. The geographical range of this parasite is limited to the portion of the Au Train River between Au Train Lake and Lake Superior.
authors.affiliation: Department of Biology, Northern Michigan University, Marquette 49855, USA.
authors.forename: M R
authors.initials: MR
authors.lastname: LaBeau
authors.forename: L E
authors.initials: LE
authors.lastname: Peters
mesh_terms: D000818:Animals; D005393:Fish Diseases / Q000469:parasitology; D005399:Fishes; D008824:Michigan; D012908:Snails / Q000469:parasitology; D014200:Trematoda / Q000033:anatomy & histology / Q000145:classification*; D014201:Trematode Infections / Q000469:parasitology / Q000662:veterinary