Published May 1961. Facts and recommendations in this publication may no longer be valid. Please look for up-to-date information in the OSU Extension Catalog: http://extension.oregonstate.edu/catalog
A study was initiated to 1) determine which species of
gastrointestinal nematodes are present in cattle in selected areas of
Oregon, 2) examine the seasonal abundance of these nematodes as an
indicator of periods of transmission and 3) determine at what season
developmental inhibition occurs in the major genera of...
Populations of mites and.nematodes were monitored on Watershed 10, H. J.
Andrews Forest. A minimum of 50 families and 60 genera of mites are
present, the majority being Cryptostgmata. Population estimates vary
from 5000-350,000 per square meter. Nine categories of nematodes are
present, most belonging to the saprozoic, dorylaimoid, aquatic...