| seasonal transmission of bovine gastrointestinal nematodes in the texas gulf coast. | sentinel calves were placed in pastures for 1 month in two environmentally dissimilar areas of the texas gulf coast to determine the seasonal transmission of various gastrointestinal nematodes. transmission was determined for cooperia spp, haemonchus placei, ostertagia ostertagi, and trichostrongylus axei. large numbers of cooperia spp were acquired from may through november, with the peak of transmission occurring in july and august. haemonchus placei was encountered on both field sites but was ... | 1979 | 500427 |
| effects of season and physical condition on the gastrointestinal helminth community of white-tailed deer from the texas edwards plateau. | eighty-six adult female white-tailed deer, odocoileus virginianus (zimmermann), collected over a 12-mo period in the texas edwards plateau, harbored six species of nematodes (haemonchus contortus, gongylonema pulchrum, oesophagostomum venulosum, ostertagia ostertagi, cooperia sp., and apteragia odocoilei), and two cestodes (moniezia sp. and taenia hydatigena). the patterns of distribution of the three common species of gastrointestinal helminths (h. contortus, o. venulosum, and g. pulchrum) were ... | 1985 | 4032624 |