Fróðskaparrit - 31.12.2000, Side 190

194
PARASITES IN SHEEP IN THE FAROE ISLANDS
Hoberg, E.P., Zimmerman and Rickard, L.G. 1985. Ne-
matodirus battus: A Review of Recent Studies Rel-
ative to the Development of Surveillance and Con-
trol Programs. Proceedings ofthe 89,h Annual Meet-
ing ofthe United States Animal Health Association,
Milwaukee, Wisconsin.
Hoberg, E.P., Zimmerman, G.L. and Lichtenfels, J.R.
1986. First report of Nematorirus battus (Nemato-
da: Trichostrongyloidea) in North America: Re-de-
scription and Comparison to Other Species. Proc.
Helminthol. Soc. Wash. 53(1): 80-88.
Jasmer, D.P., Wescott, R.B. and Crane, J.W. 1987. Sur-
vival of third-stage larvae of Washington isolates of
Haemonchus contortus and Ostertagia circumcinc-
ta exposed to cold temperatures. Proc. Helminthol.
Soc. Wash. 54(1): 48-52.
Jensen, A.S., Lundbech, W., Spárck, R. and Tuxen, S.L.
(eds.). 1928-1971. The Zoology of the Faroesl-lll.
Kassai, T. 1999. Veterinary Helminthology.
Lancaster, M.B. and Hong, C. 1981. Polymorphism in
nematodes. Syst. Parasitol. 3: 29-31.
Lichtenfels J.R. and Hoberg, E.P. 1993. The systematics
of nematodes that cause ostertagiasis in domestic
and wild ruminants in North America: an update and
a key to species. Veterinary Parasitology 46: 33-53.
Lichtenfels, J.R. and Pilitt, P.A. 1983. Cuticular Ridge
Patterns of Nematodirus (Nematođa: Trichostrongy-
lidea) Parasitic in Domestic Ruminants of North
America, with a Key to Species. Proc. Helminthol.
Soc. Wash. 50(2) 1983: 261-274.
Lutzen, M.W. and Bovien, P. 1934. Leveriktens
Forekomst og Bekæmpelse paa Færøerne. Statens
Landbrugsforsøg pá Færøerne.
Richter, S.H. 1974. Sheep parasites in Iceland. J. Agr.
Res. Icel. 6: 3-22.
Rickard, L.G., Hoberg, E.P., Bishop, J.K. and Zimmer-
man, G.L. 1989. Epizootiology of Nematodirus bat-
tus, N. fdicollis and N. spathiger (Nematoda: Tri-
chostrongyloidea) in Western Oregon. Proc.
Helminthol. Soc. Wash. 56(2): 104-115.
Rose, C.H. 1990. Gastrointestinal nematodes of sheep
in Greenland. PhD Thesis. Institute for Veterinary
Microbiology, The Royal Veterinary and Agricul-
ture University, Copenhagen.
Stevenson, L.A., Gasser, R.B. and Chilton, N.B. 1996.
The ITS-2 rDNA of Teladorsagia circumcincta, T.
trifurcata and T. davtiani (Nematoda: Tri-
chostrongylidae) indicates that these taxa are one
species. Intemational Journal for Parasitology.
1123-1126.
Svabo, J. Chr. 1781-1782. Indberetningerfra en Reise
i Færøe 1781 og 1782. Djurhuus, N. (ed.). Selska-
bet til Udgivelse af færøske Kildeskrifter og Studier.
1959. 743.
Thamsborg, S.M., Githigia, S.M., Larsen, M., Nansen,
P. and Henriksen, S.Aa. 1996. Infektion med Ne-
matodirus battus, en ny parasit hos fár i Danmark.
Dansk veterinærtidsskrift 79,6: 231-232.
Thomas, R.J. and Stevens, A.J. 1960. Ecological studies
on the development of the pasture stages of Nema-
todirus battus and N. filicollis., nematode parasites
of sheep. Parasitology 50: 31-49.
Urquhart, G.M., Armour, J., Duncan, J.L., Dunn, A.M.
and Jennings, F.W. 1987. Veterinary Parasitology.