Parasitology, Harold W. Manter Laboratory of

 

Date of this Version

6-1985

Comments

Published in Canadian Journal of Zoology vol. 63, no. 6 (June 1985): 1463-1469. Copyright 1985, National Research Council of Canada. Used by permission.

Abstract

A cestode, Hymenolepis tualatinensis n. sp., is described from the pocket gopher, Thomomys bulbivorus (Richardson) (Rodentia: Geomyidae), from the Willamette Valley in Oregon. Helminths of four additional species were found. Trichuris fossor Hall, 1916, Ransomus rodentorum Hall, 1916, Heligmosomoides thomomyos Gardner and Jasmer, 1983, and Hymenolepis horrida (von Linstow, 1901), of which all but H. thomomyos represent new host records. A significant change in prevalence of the whipworm T. fossor in the population of T. bulbivorus from spring through summer was noted. Significant differences in prevalence of infection of helminths in pocket gophers collected from two different localities in the Willamette Valley were observed.

On trouvera ici la description d'Hymenolepis tualatinensis n. sp., cestode parasite du gaufre Thomomys bulbivorus (Richardson) (Rodentia: Geomyidae), de la vallee de la Willamette en Oregon. Quatre autres especes d'helminthes ont ete trouvees egalement: Trichuris fossor Hall, 1916, Ransomus rodentorum Hall, 1916, Heligmosomoides thomomyos Gardner and Jasmer, 1983 et Hymenolepis horrida (von Linstow, 1901); toutes ces especes, sauf H. thomomyos sont trouvees pour la premiere fois chez ce gaufre. La frequence du nematode T. fossor a subi une variation significative chez la population de T. bulbivorus du printemps a la fin de l'ete. La frequence des infections par les helminthes differait significativement aussi chez les gaufres de deux sites differents de la vallee.

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