| prevalence and epidemiology of the major gastrointestinal parasites of horses in perth, western australia. | a survey was conducted on the prevalence of the major gastrointestinal parasites in 140 horses necropsied in perth, western australia, during 1979 to 1982. adult strongylus vulgaris were found in 22.5 per cent of horses and verminous arteritis in 62.9 per cent. the peak worm prevalence was in november to january (summer). s edentatus had a similar prevalence and seasonality but s equinus was not found in this survey. draschia megastoma and habronema muscae were found in 66.2 per cent and 35.3 pe ... | 1985 | 2934246 |