title: Susceptibility of avian hosts to experimental Gymnophalloides seoi infection.
abstract: To determine whether avian species are susceptible to infection with Gymnophalloides seoi (a human-infecting intestinal trematode), we exposed 7 species of birds with metacercariae obtained from oysters. The birds were necropsied at days 2, 4, and 6 postinfection (PI). The highest worm recovery at day 6 PI was obtained from the Kentish plover (Charadrius alexandrinus; mean = 56.0%), followed by the Mongolian plover (C. mongolus; 49.3%), and the grey plover (Pluvialis squatarola; 32.3%). In contrast, no mature worms were recovered from the great knot (Calidris tenuirostris), dunlin (C. alpina), black-tailed gull (Larus crassirostris), and mallard (Anas platyrhynchos). Among the plovers, the worms attained the greatest size at day 6 PI (254.1 x 190.4 microm) in the Kentish plover, with a significantly higher number of eggs in the uterus. The 3 species of plovers are highly susceptible to experimental G. seoi infection, suggesting that they could play a role as definitive hosts for these worms in nature.
authors.affiliation: Department of Medical Laboratory Sciences, College of Health Sciences, Yonsei University, Kangwon-do, Korea.
authors.forename: Y S
authors.initials: YS
authors.lastname: Ryang
authors.forename: J C
authors.initials: JC
authors.lastname: Yoo
authors.forename: S H
authors.initials: SH
authors.lastname: Lee
authors.forename: J Y
authors.initials: JY
authors.lastname: Chai
mesh_terms: D000284:Administration, Oral; D015766:Albendazole / Q000008:administration & dosage / Q000627:therapeutic use; D000818:Animals; D000871:Anthelmintics / Q000008:administration & dosage / Q000627:therapeutic use; D001715:Bird Diseases / Q000188:drug therapy / Q000276:immunology*; D001717:Birds; D004372:Ducks; D010270:Parasite Egg Count / Q000662:veterinary; D011223:Praziquantel / Q000008:administration & dosage / Q000627:therapeutic use; D014200:Trematoda / Q000472:pathogenicity*; D014201:Trematode Infections / Q000188:drug therapy / Q000276:immunology / Q000662:veterinary*
chemical_list: D000871:Anthelmintics; D011223:Praziquantel; D015766:Albendazole