出典:Wikipedia
出典:『Wikipedia』 (2011/05/19 21:00 UTC 版)
Heterakis is the name of a genus of parasitic nematodes. Members of the genus are minute roundworms (pinworms), hardly 1 cm long, infecting different species of gallinaceous birds, including chickens, turkeys, ducks, geese, grouse, guineafowl, partridges, pheasants, and quails. There are approximately 10 species under the genus, but classification is often ambiguous due to their close resemblance, and a number of synonyms have arisen. H. gallinarum Schrank, 1788; H. isolonche von Linstow, 1906; and H. dispar Schrank, 1870, are the best understood species in terms of prevalence, pathogenicity and biology. They inhabit the lumen of the cecum of the host.