Publications

the systematics of nematodes that cause ostertagiasis in domestic and wild ruminants in north america: an update and a key to species.	studies of medium stomach worms (subfamily ostertagiinae) of domestic and wild ruminants in north america have refined our understanding of the systematics, host distribution and biogeography of these nematodes. strong support for recognition of monophyly for the ostertagiinae has resulted from preliminary phylogenetic analyses of morphological characters among these and other trichostrongylids. evaluation of morphological and biochemical characters in our laboratory and elsewhere has not refute ...	1993	8484224
interbreeding in the subfamily ostertagiinae (nematoda: trichostrongylidae) of ruminants.	the interbreeding of 6 species of ostertagiines was studied in a sheep model. virgin young females of selected nonpolymorphic strains of ostertagia ostertagi, ostertagia leptospicularis, and teladorsagia circumcincta were mated with various male ostertagiines. interbreeding was successful between o. ostertagi and ostertagia lyrata, o. leptospicularis and ostertagia kolchida, and t. circumcincta and teladorsagia trifurcata, respectively. their offspring were fertile and resembled one parent or th ...	1992	1597780
[distribution of nematode parasites of the digestive system in sheep (ovis aries) and goats (capra hircus) of the piedmontese and valdostano alpine arc].	a survey, carried out on gastro-intestinal nematodes of sheep and goats of piemonte and of valle d'aosta (87 sheep and 12 goats) has shown the presence of the following species in sheep, bunostomum trigonocephalum, chabertia ovina, cooperia curticei, haemonchus contortus, marshallagia marshalli, nematodirus abnormalis, nematodirus filicollis, nematodirus helvetianus, nematodirus spathiger, oesophagostomum venulosum, ostertagia circumcincta, ostertagia lyrata, ostertagia trifurcata, skrjabinema o ...	1977	572958