| intestinal helminths of river otters (lutra canadensis) from the pacific northwest. | the intestinal helminth fauna of river otters, lutra canadensis, from the pacific northwest was characterized by low species richness and intensity of infection. river otters from the lower columbia river (n = 23) were infected with 9 species of helminths (83% prevalence); those from a relatively undisturbed reference area near the headwaters of the trask and wilson rivers on the oregon coast (n = 6) were infected by 5 species of helminths (100% prevalence). single species of eucestoda (schistoc ... | 1997 | 9057704 |