Studies on the Helminth Fauna of Alaska. XXVII. The Occurrence of Larvae of Trichinella spiralis in Alaskan Mammals

摘要: An effort was made to obtain a series of each species mammal occurring in Alaska, with exception the ungulates. Such specimens were collected over entire Territory, but most originated above Arctic Circle. Many mammals secured through cooperation Eskimo and Indian trappers, who held frozen carcasses animals taken for their fur until they could be brought laboratory Anchorage. In some instances, only muscle tissue animals, collecting data, preserved. The personnel Zoonotic Disease Section also large numbers mammals. Dogs generally obtained when those no longer serviceable destroyed, purchased this study. Although autopsies performed field, laboratory. For purposes work, several grams striated taken, routinely from diaphragm, at autopsy animal. These samples stored later processing. larvae usually dead isolated. presence Trichinella determined artificial digestion samples. purpose, chopped knife into small pieces, placed solution pepsin hydrochloric acid, incubated 37? C. constant agitation 24 hours. resulting fluid poured fine-mesh screen remove any undigested material allowed stand graduated cylinders present settled out. supernatant siphoned off, residue watch glasses few drops 10 percent