PUBLISHED RESEARCH OUTPUT – B.L. PENZHORN
2015
VAN VUUREN, M. & PENZHORN, B.L. 2015. Geographic range of vector-borne infections and their
vectors: the role of African wildlife. OIE Scientific and Technical Review 34(1) (in press)
JUNKER, K., HORAK, I.G. & PENZHORN, B.L. 2015. History and development of research on wildlife
parasites in southern Africa, with emphasis on terrestrial mammals, especially ungulates.
International Journal for Parasitology: Parasites and Wildlife (doi: 10.1016/j.ijppaw.2014.12.003
2014
CONRADIE VAN WYK, I., GODDARD, A., BRONSVOORT, B.M.deC, COETZER, J.A.W., HANDEL,
I.C., HANOTTE, O., JENNINGS, A., LESOSKY, M., KIARA, H., POOLE, J.E., THUMBI, S.M.,
TOYE, P., WOOLHOUSE, M.W. & PENZHORN, B.L. 2014. The impact of co-infections on the
haematological profile of East African Short-horn Zebu calves. Parasitology 141: 374-388 (doi:
10.1017/S0031182013001625)
ADAMU, M., TROSKIE, M., OSHADU, D.O., MALATJI, D.P., PENZHORN, B.L. & MATJILA, P.T.
2014. Occurrence of tick-transmitted pathogens in dogs in Jos, Plateau State, Nigeria. Parasites
& Vectors 7:119; DOI: 10.1186/1756-3305-7-119
2013
BOSMAN, A.-M., OOSTHUIZEN, M.C., VENTER, E.H., STEYL, J.C.A., GOUS, T.A. & PENZHORN,
B.L. 2013. Babesia lengau associated with cerebral and haemolytic babesiosis in two domestic
cats. Parasites & Vectors 6: 128 (doi:10.1186/1756-3305-6-128)
CONRADIE VAN WYK, I., GODDARD, A., BRONSVOORT, B.M.deC, COETZER, J.A.W., HANDEL,
I.C., HANOTTE, O., JENNINGS, A., LESOSKY, M., KIARA, H., POOLE, J.E., THUMBI, S.M.,
TOYE, P., WOOLHOUSE, M.W. & PENZHORN, B.L. 2013. The impact of co-infections on the
haematological profile of East African Short-horn Zebu calves. Parasitology (doi:
S0031/82013001625)
MBIZENI, S., POTGIETER, F.T., TROSKIE, C., MANS, B.J., PENZHORN, B.L. & LATIF, A.A. 2013.
Field and laboratory studies on Corridor disease (Theileria parva infection) in cattle populations at
the livestock/game interface of uPhongolo-Mkuze area, South Africa. Ticks and Tick-borne
Diseases 4: 227-234 (doi.org/10.1016/j.ttbdis.2012.11.005)
2012
BANETH, G., BOURDEAU, P., BOURDOISEAU, G., BOWMAN, D., BREITSCHWERDT, E.,
CAPELLI, G., CARDOSO, L., DANTAS-TORRES, F., DAY, M., DEDET, J.-P., DOBLER, G.,
FERRER, L., IRWIN, P., KEMPF, V., KOHN, B., LAPPIN, M., LITTLE, S., MAGGI, R., MIRÓ, G.,
NAUCKE, T., OLIVA, G., OTRANTO, D., PENZHORN B., PFEFFER, M., ROURA, X., SAINZ, A.,
SHWA, S., SHIN, S., SOLANO-GALLEGO, L., STRAUBINGER, R., TRAUB, R., TREES, A.,
TRUYEN, U., DEMONCEAU, T., FITZGERALD, R., GATTI, D., HOSTETLET, J., KLIMER, B.,
KRIEGER, K., MENCKE, N., MENDÃO, C., MOTTIER, L., PACHNICKE, S., REES, B., SIBETER,
S., STANNECK, D., MINGOTE, M.T., VON SIMSON, C. & WESTON, S. 2012. Vector-borne
diseases – constant challenge for practicing veterinarians: recommendations for the CVBD World
Forum. Parasites & Vectors 5: 55 (doi:10.1186/1756-3305-5-55)
CONRADIE VAN WYK, I., GODDARD, A., BRONSVOORT, B.M.DeC., COETZER, J.A.W., BOOTH,
C., HANOTTE, O., JENNINGS, A., KIARA, H., MASHEGO, P., MULLER, C., PRETORIUS, G.,
POOLE, E.J., THUMBI, S.M., TOYE, P., WOOLHOUSE, M.E.J. & PENZHORN, B.L. 2012.
Hematological profile of East African Short-Horn Zebu calves: Neonate to 51 weeks of age.
Comparative Clinical Pathology 22: 1029-1036 (doi: 10.1007/s00580-012-1522-6)
KARIUKI, E.K., PENZHORN, B.L. & HORAK, I.G. 2012. Ticks (Acari: Ixodidae) on cattle and African
buffaloes in the Tsavo Conservation Area, Kenya. Onderstepoort Journal of Veterinary Research
79 (1), 4 pages (doi: 10.4102/ojvr.v79i1.437)
2011
BROTHERS, P.S., COLLINS, N.E., OOSTHUIZEN, M.C., BHOORA, R., TROSKIE, M. & PENZHORN,
B.L. 2011. Occurrence of blood-borne tick-transmitted parasites in common tsessebe
(Damaliscus lunatus) antelope in Northern Cape Province, South Africa. Veterinary Parasitology
183: 160-165 (doi:10.1016/j.vetpar.2011.06.015)
GOVENDER, D., OOSTHUIZEN, M.C. & PENZHORN, B.L. 2011. Piroplasm parasites of white
rhinoceroses (Ceratotherium simum) in the Kruger National Park, and their relation to anaemia.
Journal of the South African Veterinary Association 82: 36-40 (doi: 10.4102/jsava.v82i1.31)
PENZHORN, B.L. 2011. Why is Southern African canine babesiosis so virulent? An evolutionary
perspective. Parasites & Vectors 4:51 (doi:10.1186/1756-3305-4-51)
PFITZER, S., OOSTHUIZEN, M.C., BOSMAN, A.-M., VORSTER, I. & PENZHORN, B.L. 2011. Tickborne blood parasites in nyala (Tragelaphus angasii) from KwaZulu-Natal, South Africa.
Veterinary Parasitology 176: 126-131 (doi: 10.1016/j.vetpar.2010.11.006)
2010
BHOORA, R., ALLSOPP, M.T.E.P., BUSS, P., GUTHRIE, A.J., PENZHORN, B.L. & COLLINS, N.E.
2010. Genetic diversity of piroplasms in plains zebra (Equus quagga burchellii) and Cape
mountain zebra (Equus zebra zebra) in South Africa. Veterinary Parasitology 174: 145-149 (doi:
10.1016/j.vetpar.2010.08.014)
BOSMAN, A.-M., OOSTHUIZEN, M.C., PEIRCE, M.A., VENTER, E.H. & PENZHORN, B.L. 2010.
Babesia lengau sp. nov., a novel Babesia species in cheetah (Acinonyx jubatus, Schreber, 1775)
populations in South Africa. Journal of Clinical Microbiology 48: 2703-2708 (doi:
10.1128/JCM.02266-09)
KEET, D.F., MICHEL, A.L., BENGIS, R.G., BECKER, P., VAN DYK, D.S., VAN VUUREN , M.,
RUTTEN, V.P.M.G. & PENZHORN, B.L. 2010. Intradermal tuberculin testing of wild African lions
(Panthera leo) naturally exposed to infection with Mycobacterium bovis. Veterinary Microbiology
144: 384-391 (doi: 10.1016/j.vetmic.2010.01.028)
YUSUFMIA, S.B.A.S., COLLINS, N.E., NKUNA, R., TROSKIE, M., VAN DEN BOSSCHE, P. &
PENZHORN, B.L. 2010. Occurrence of Theileria parva and other haemoprotozoa in cattle at the
edge of Hluhluwe-iMfolozi Park, KwaZulu-Natal, South Africa. Journal of the South African
Veterinary Association 81: 45-49 (doi: 10.4102/jsava.v81i1.95)
ZORLONI, A., PENZHORN, B.L. & ELOFF, J.N. 2010. Extracts of Calpurnia aurea leaves from
southern Ethiopia attract and immobilise or kill ticks. Veterinary Parasitology 168: 160-164 (doi:
10.1016/j.vetpar.2009.10.026)
2009
BHOORA, R., FRANSSEN, L., OOSTHUIZEN M.C., BUTLER C.M., VAN DER KOLK J.H., GUTHRIE
A.J., ZWEYGARTH E., PENZHORN B.L., JONGEJAN F. & COLLINS N.E. 2009. Variation in 18S
rRNA gene sequences of Theileria equi and Babesia caballi in South Africa. Veterinary
Parasitology 159: 112-120 (doi: 10.1016/j.vetpar.2008.10.004)
LAMPEN, F., BHOORA, R., COLLINS, N.E. & PENZHORN, B.L. 2009. Putative clinical piroplasmosis
in a Burchell’s zebra (Equus quagga burchelli). Journal of the South African Veterinary
Association 80: 257-260 (doi: 10.4102/jsava.v80i4.223)
MATJILA, P.T., CARCY, B., LEISEWITZ, A.L., SCHETTERS, T., JONGEJAN, F. & PENZHORN, B.L.
2009. The BrEMA1 gene: a tool for correlating Babesia rossi genotypes and clinical manifestation
of canine babesiosis. Journal of Clinical Microbiology 47: 3586-3592 (doi: 10.1128/JCM.0111008)
NDHLOVU, D.N., MAKAYA, P.V. & PENZHORN, B.L. 2009. Tick infestation and udder and teat
damage in selected cattle herds of Matabeleland South, Zimbabwe. Onderstepoort Journal of
Veterinary Research 76: 235-248 (doi: 10.4102/ojvr.v76i2.48)
OOSTHUIZEN, M.C., ALLSOPP, B.A., TROSKIE, M., COLLINS, N.E. & PENZHORN, B.L. 2009.
Identification of novel Babesia and Theileria species in South African giraffe (Giraffa
camelopardalis, Linnaeus 1758) and roan antelope (Hippotragus equinus, Desmarest 1804).
Veterinary Parasitology 163: 39-46 (doi: 10.1016/j.vetpar.2009.03.045)
2008
MATJILA, P.T., LEISEWITZ, A.L., JONGEJAN, F., BERTSCHINGER, H.J. & PENZHORN, B.L. 2008.
Molecular detection of Babesia rossi and Hepatozoon sp. in African wild dogs (Lycaon pictus) in
South Africa. Veterinary Parasitology 157: 123-127 (doi: 10.1016/j.vetpar.2008.07.016)
MATJILA, P.T., LEISEWITZ, A.L., JONGEJAN, F. & PENZHORN, B.L. 2008. Molecular detection of
tick-borne protozoal and ehrlichial infections in domestic dogs in South Africa. Veterinary
Parasitology 155: 152-157 (doi: 10.1016/j.vetpar.2008.04.012)
MATJILA, P.T., LEISEWITZ, A.L., OOSTHUIZEN, M.C., JONGEJAN, F. & PENZHORN, B.L. 2008.
Detection of a Theileria species in dogs in South Africa. Veterinary Parasitology 157: 34-40 (doi:
10.1016/j.vetpar.2008.06.025)
NGERANWA, J.J.N., SHOMPOLE, S.P., VENTER, E.H., WAMBUGU, A., CRAFFORD, J.E. &
PENZHORN, B.L. 2008. Detection of Anaplasma antibodies in wildlife and domestic species in
wildlife-livestock interface areas of Kenya by major surface protein 5 competitive inhibition
enzyme-linked immunosorbent assay. Onderstepoort Journal of Veterinary Research 75: 199-205
(doi: 10.4102/ojvr.v75i3.95)
OOSTHUIZEN, M.C., ZWEYGARTH, E., COLLINS, N.E. & PENZHORN, B.L. 2008. Identification of a
novel Babesia sp. from sable antelope (Hippotragus niger). Journal of Clinical Microbiology 46:
2247-2251 (doi: 10.1128/JCM.00167-08)
PENZHORN, B.L., OOSTHUIZEN, M.C., BOSMAN, A.M., KILIAN, J.W. & HORAK, I.G. 2008. Black
rhinoceros Diceros bicornis populations in northwestern Namibia are apparently not infected with
piroplasms. Journal of Wildlife Diseases 44: 1032-1035
(http://www.jwildlifedis.org/content/44/4/1032.full.pdf+html)
THOMPSON, B.E., LATIF, A.A., OOSTHUIZEN, M.C., TROSKIE, M. & PENZHORN, B.L. 2008.
Occurrence of Theileria parva infection in cattle on a farm in the Ladysmith district, KwaZuluNatal, South Africa. Journal of the South African Veterinary Association 79: 31-35 (doi:
10.4102/jsava.v79i1.237)
2007
ABU SAMRA, N., McCRINDLE, C.M.E., PENZHORN, B.L. & CENCI-GOGA, B. 2007. Seroprevalence
of toxoplasmosis in sheep in South Africa. Journal of the South African Veterinary Association 78:
116-120 (doi: 10.4102/jsava.v78i3.301)
ALLSOPP, M.T.E.P., LEWIS, B.D. & PENZHORN, B.L. 2007. Molecular evidence for transplacental
transmission of Theileria equi from carrier mares to their apparently healthy foals. Veterinary
Parasitology 148: 130-136 (doi: 10.1016/j.vetpar.2007.05.017)
BOSMAN, A-M., VENTER, E.H. & PENZHORN, B.L. 2007. Occurrence of Babesia felis and Babesia
leo in domestic cats and various wild felid species in Southern Africa, based on reverse line blot
analysis. Veterinary Parasitology 144: 33-38 (doi: 10.1016/j.vetpar.2006.09.025)
MATJILA, P.T., PENZHORN, B.L., LEISEWITZ, A.L., BHOORA, R. & BARKER, R. 2007. Molecular
characterization of Babesia gibsoni infection from a Pit-bull terrier pup recently imported into
South Africa. Journal of the South African Veterinary Association 78: 2-5 (doi:
10.4102/jsava.v78i1.277)
2006
KJEMTRUP, A.M., WAINWRIGHT, K., MILLER, M., PENZHORN, B.L. & CARRENO, R.A. 2006.
Babesia conradae, sp. nov., a small canine Babesia identified in California. Veterinary
Parasitology 138: 103-111 (doi: 10.1016/j.vetpar.2006.01.044)
PARSONS, S.D.C., PENZHORN, B.L., REYERS, F., STEYL, J.A. & BECKER, P. 2006. Erythrocyte
morphology and haemoglobin types of neonatal roan antelope (Hippotragus equinus) displaying a
hypochromic, poikilocytic anaemia. Journal of Comparative Pathology 134: 153-160 (doi:
10.1016/j.jcpa.2005.09.008)
PENZHORN, B.L. 2006. Babesiosis of wild carnivores and ungulates. Veterinary Parasitology 138: 1121 (doi: 10.1016/j.vetpar.2006.01.0360)
PENZHORN, B.L., SCHOEMAN, T. & JACOBSON, L.S. 2006. Feline babesiosis: and endemic South
African disease. Japanese Journal of Veterinary Parasitology 5: 2-7(invited review paper)
TØNNESEN, M.H., PENZHORN, B.L., BRYSON, N.R., STOLTSZ, W.H. & MASIBIGIRI, T. 2006.
Seroprevalence of Babesia bovis and Babesia bigemina in cattle in the Soutpansberg region,
Limpopo Province, South Africa, associated with changes in vector-tick populations. Journal of
the South African Veterinary Association 77: 61-65 (doi: 10.4102/jsava.v77i2.345)
VAN DEN BOSSCHE, P., ESTERHUIZEN, J., NKUNA, R., MATJILA, P.T., PENZHORN, B.L.,
GEERTS, S. & MARCOTTY, T. 2006. An update of the bovine trypanosomosis situation at the
edge of Hluhluwe-iMfolozi Park, KwaZulu-Natal Province, South Africa. Onderstepoort Journal of
Veterinary Research 73: 77-79 (doi: 10.4102/ojvr.v73i1.172)
VAN DER MERWE, M., VAN DER MERWE, N.J. & PENZHORN, B.L. 2006. Reproductive strategy in
the seasonally breeding non-hibernating yellow house bat, Scotophilus dinganii (A. Smith, 1833).
African Zoology 41: 67-74 (doi: 10.3377/1562-7020(2006)41[67:AORITS]2.0.CO;2)
2005
JAMAL, S., SIGAUQUE, I., MACUAMULE, C., NEVES, L., PENZHORN, B.L., MARCOTTY T, &. VAN
DEN BOSSCHE, P. 2005. The susceptibility of Trypanosoma congolense isolated in Zambézia
Province (Mozambique) to isometamidium chloride, diminazene aceturate and homidium
chloride. Onderstepoort Journal of Veterinary Research 72: 333-338 (doi: 10.4102/ojvr.v72i4.190)
MATJILA, P.T., NIJHOF, A.M., TAOUFIK, A., HOUWERS, D., TESKE, E., PENZHORN, B.L., DE
LANGE, T. & JONGEJAN, F. 2005. Autochthonous canine babesiosis in The Netherlands.
Veterinary Parasitology 131: 23-29 (doi: 10.1016/j.vetpar.2005.04.020)
NIJHOF, A.M., PILLAY, V., STEYL, J., PROZESKY, L., STOLTSZ, W.H., LAWRENCE, J.A.,
PENZHORN, B.L. & JONGEJAN, F. 2005. Molecular characterization of Theileria species
associated with mortality in four species of African antelopes. Journal of Clinical Microbiology 43:
5907-5911 (doi: 10.1128/JCM.43.12.5907-5911.2005)
PETER, R.J., VAN DEN BOSSCHE, P., PENZHORN, B.L. & SHARP, B. 2005. Tick, fly, and mosquito
control – lessons from the past, solutions for the future. Veterinary Parasitology 132: 205-215
(doi: 10.1016/j.vetpar.2005.07.004)
2004
TØNNESEN, M.H., PENZHORN, B.L., BRYSON, N.R., STOLTSZ, W.H. & MASIBIGIRI, T. 2004.
Displacement of Boophilus decoloratus by Boophilus microplus in the Soutpansberg region,
Limpopo Province, South Africa. Experimental and Applied Acarology 32: 199-208 (doi:
10.1016/j.vetpar.2005.04.020)
MATJILA, P.T., PENZHORN, B.L., BEKKER, C.P.J., NIJHOF, A.M. & JONGEJAN, F. 2004. First
record of Babesia canis vogeli in domestic dogs in South Africa. Veterinary Parasitology 122:
119-125 (doi: 10.1016/j.vetpar.2004.03.019)
PENZHORN, B.L., SCHOEMAN, T. & JACOBSON, L.S. 2004. Feline babesiosis in South Africa: A
review. Annals of the New York Academy of Sciences 1026: 183-186 (doi:
10.1196/annals.1307.027)
REGASSA, A., PENZHORN, B.L. & BRYSON, N.R. 2004. Progression towards endemic stability to
bovine babesiosis in cattle introduced onto a game ranch. Onderstepoort Journal of Veterinary
Research 71: 333-336 (doi: 10.4102/ojvr.v71i4.254)
2003
NIJHOF, A., PENZHORN, B.L., LYNEN, G., MOLLEL, J.O., BEKKER, C. & JONGEJAN, F. 2003.
Babesia bicornis sp. n. and Theileria bicornis sp. n.: Tick-borne parasites associated with
mortality in the black rhinoceros (Diceros bicornis). Journal of Clinical Microbiology 41: 22492254(doi: 10.1128/JCM.41.5.2249-2254.2003)
REGASSA, A., PENZHORN, B.L. & BRYSON, N.R. 2003. Attainment of endemic stability to Babesia
bigemina in cattle on a South African ranch where non-intensive tick control was applied.
Veterinary Parasitology 116: 267-274 (doi: 10.1016/j.vetpar.2003.07.011)
2002
MATJILA, P.T. & PENZHORN, B.L. 2002. Occurrence and diversity of bovine coccidia at three sites in
South Africa. Veterinary Parasitology 104: 93-102 (doi: 10.1016/S0304-4017(01)00605-7)
PENZHORN, B.L., STYLIANIDES, E., VAN VUUREN, M., ALEXANDER, K., MELTZER, D.G.A. &
MUKARATI, N. 2002. Seroprevalence of Toxoplasma gondii in free-ranging lion and leopard
populations in Southern Africa. South African Journal of Wildlife Research 32: 163-165
2001
PEIRCE, M.A., ANDERSON, M.D. & PENZHORN, B.L. 2001. Piroplasmosis in the aardwolf (Proteles
cristatus). Veterinary Record 149: 561-562 (doi: 10.1136/vr.149.18.561)
PENZHORN, B.L., KJEMTRUP, A.E., LÓPEZ-REBOLLAR, L.M. & CONRAD, P.A. 2001. Babesia leo
n. sp. from lions in the Kruger National Park, South Africa, and its relation to other small
piroplasms. Journal of Parasitology 87: 681-685 (: 10.1645/00223395(2001)087[0681:BLNSFL]2.0.CO;2)
SCHOEMAN, T., LOBETTI, R.G., JACOBSON, L.S. & PENZHORN, B.L. 2001. Feline babesiosis:
signalment, clinical pathology and co-infections. Journal of the South African Veterinary
Association 72: 4-11 (doi: 10.4102/jsava.v72i1.601)
2000
PENZHORN, B.L. 2000. Coccidian oocyst and nematode egg counts of free-ranging African buffalo
(Syncerus caffer) in the Kruger National Park, South Africa. Journal of the South African
Veterinary Association 71: 106-108 (doi: 10.4102/jsava.v71i2.689)
PENZHORN, B.L., LEWIS, B.D., LOPEZ-REBOLLAR, L.M. & SWAN, G.E. 2000. Screening of five
drugs for efficacy against Babesia felis in experimentally infected cats. Journal of the South
African Veterinary Association 71: 53-57 (doi: 10.4102/jsava.v71i1.678)
PRIOR TO 2000
LOPEZ-REBOLLAR, L.M., PENZHORN, B.L., DE WAAL, D.T. & LEWIS, B.D. 1999. A possible new
piroplasm in lions from the Republic of South Africa. Journal of Wildlife Diseases 35: 82-85
HARPER, C.K. & PENZHORN, B.L. 1999. Occurrence and diversity of coccidia in indigenous, Saanen
and crossbred goats in South Africa. Veterinary Parasitology 82: 1-9
PENZHORN, B.L., STYLIANIDES, E., COETZEE, M.A., VILJOEN, J.M. & LEWIS, B.D. 1999. A focus
of feline babesiosis at Kaapschehoop on the Mpumalanga escarpment. Journal of the South
African Veterinary Association 70: 60
LEWIS, B.D., PENZHORN, B.L. & VOLKMANN, D.H. 1999. Could treatment of pregnant mares
prevent abortions due to equine piroplasmosis? Journal of the South African Veterinary
Association 70: 90-91
NGERANWA, J.J.N., VENTER, E.H., PENZHORN, B.L., SOI, R.K., MWANZIA, J. & NYONGESA
(sic). 1998. Characterization of Anaplasma isolates from eland (Taurotragus oryx): Pathogenicity
in cattle and sheep and DNA profiles analysis. Veterinary Parasitology 74: 109-122
PENZHORN, B.L., DURAND D.T., LANE, E., IDE, A. & HOFMEYR, M.S. 1998. Recovery of
Sarcocystis oocysts from a free-ranging wild dog (Lycaon pictus). Journal of the South African
Veterinary Association 69: 42
HARPER, C.K. & PENZHORN, B.L. 1998. Seasonal occurrence of coccidia in a mixed herd of sheep
and goats at Nebo, Northern Province, South Africa. Journal of the South African Veterinary
Association 69: 93-94
KNAPP, S.E., KRECEK, R.C., HORAK, I.G. & PENZHORN, B.L. 1997. Helminths and arthropods of
black and white rhinoceroses in southern Africa. Journal of Wildlife Diseases 33: 492-502
PENZHORN, B.L. & KRECEK, R.C. 1997. Veterinary parasitology in South Africa: some highlights of
the past 100 years. Veterinary Parasitology 71: 69-79
LEWIS, B.D., PENZHORN, B.L., DE WAAL, D.T. & LÓPEZ REBOLLAR, L.M. 1996. Isolation of a
South African vector-specific strain of Babesia canis. Veterinary Parasitology 63: 9-16
PENZHORN, B.L., KEET. D.F. & BENGIS, R.G. 1996. A trypanosomatid organism on blood smears
made from a waterbuck Kobus ellipsiprymnus carcass in the Kruger National Park. Journal of the
South African Veterinary Association 67: 4-5
LEWIS, B.D., PENZHORN, B.L. & LÓPEZ REBOLLAR, L.M. 1995. Immune responses to South
African Babesia canis and the development of a preliminary vaccine. Journal of the South African
Veterinary Association 66: 61-65
PENZHORN, B.L., LEWIS, B.D., DE WAAL, D.T. & LÓPEZ REBOLLAR, L.M. 1995. Sterilisation of
Babesia canis infections by imidocarb alone or in combination with diminazene. Journal of the
South African Veterinary Association 66: 157-159
HORAK, I.G., SPICKETT, A.M., BRAACK, L.E.O., PENZHORN, B.L., BAGNALL, R.J. & UYS, A.C.
1995. Parasites of domestic and wild animals in South Africa. XXXIII. Ixodid ticks on scrub hares
in the north-eastern regions of Northern and Eastern Transvaal and of KwaZulu-Natal.
Onderstepoort Journal of Veterinary Research 62: 123-131
SOMERS, M.J., RASA, O.A.E. & PENZHORN, B.L. 1995. Group structure and social behaviour of
warthogs Phacochoerus aethiopicus. Acta Theriologica 40: 257-281
PENZHORN, B.L., KNAPP, S.E. & SPEER, C.A. 1994. Enteric coccidia in free-ranging American
bison (Bison bison) in Montana. Journal of Wildlife Diseases 30: 267-269
PENZHORN, B.L., BOOTH, L.M. & MELTZER, D.G.A. 1994. Isospora rivolta recovered from cheetah
faeces. Journal of the South African Veterinary Association 65: 2
PENZHORN, B.L., ROGNLIE, M.C., HALL, L.L. & KNAPP, S.E. 1994. Enteric coccidia of Cashmere
goats in southwestern Montana, USA. Veterinary Parasitology 55: 137-142
PENZHORN, B.L. & CHAPARRO, F. 1994. Prevalence of Babesia cynicti infection in three
populations of yellow mongooses Cynictis penicillata in the Transvaal, South Africa. Journal of
Wildlife Diseases 30: 557-559
SOMERS, M.J., PENZHORN, B.L. & RASA, O.A.E. 1994. Home range size, range use and dispersal
of warthogs. Journal of African Zoology 108: 363-371
PENZHORN, B.L. & VAN DER MERWE, N.J. 1993. Testis size and spermatogenesis of tsessebes
from Nylsvley Nature Reserve, Transvaal. Koedoe 36(1): 95-98
PENZHORN, B.L., VAN DER MERWE, N.J. & PENRITH, M.L. 1993. Corpora amylacea in seminal
vesicles and ampullae of tsessebe antelopes (Damaliscus lunatus). Veterinary Record 133: 244245
HORAK, I.G., SPICKETT, A.M., BRAACK, L.E.O. & PENZHORN, B.L. 1993. Parasites of domestic
and wild animals in South Africa. XXXII. Ixodid ticks on scrub hares in the Transvaal.
Onderstepoort Journal of Veterinary Research 60: 163-174
PENZHORN, B.L., HORAK, I.G., SPICKETT, A.M. & BRAACK, L.E.O. 1993. Observations on
reproduction and morphometrics of scrub hares in the Kruger National Park. South African
Journal of Wildlife Research 23: 74-77
PENZHORN, B.L., DE CRAMER, K.G.M. & BOOTH, L.M. 1992. Coccidial infection in German
Shepherd Dog pups in a breeding unit. Journal of the South African Veterinary Association 63:
27-29
BENNETT, G.F., EARLÉ, R.A. & PENZHORN, B.L. 1992. Ornithodoros peringueyi (Argasidae) and
Xenopsylla trispinis (Siphonaptera), intermediate hosts of Hepatozoon atticorae of the South
African cliff swallow, Hirundo spilodera. Canadian Journal of Zoology 70: 188-190
SOMERS, M.J. & PENZHORN, B.L. 1992. Reproduction in a reintroduced warthog population in the
eastern Cape Province. South African Journal of Wildlife Research 22: 57-60
PENZHORN, B.L. & NOVELLIE, P.A. 1991. Some behavioural traits of Cape mountain zebras (Equus
zebra zebra) and their implications for the management of a small conservation area. Applied
Animal Behaviour Science 29: 293-299
McINNES, E.F., STEWART, C.G., PENZHORN, B.L. & MELTZER, D.G.A. 1991. An outbreak of
babesiosis in imported sable antelope (Hippotragus niger). Journal of the South African
Veterinary Association 62: 30-32
PENZHORN, B.L., HORAK, I.G., SPICKETT, A.M. & BRAACK, L.E.O. 1991. Morphometrics of
helmeted guineafowls Numida meleagris from the Kruger National Park. South African Journal of
Wildlife Research 21: 62-66
EARLÉ, R.A., HORAK, I.G., HUCHZERMEYER, F.W., BENNETT, G.F., BRAACK, L.E.O. &
PENZHORN, B.L. 1991. The prevalence of blood parasites in helmeted guineafowls, Numida
meleagris, in the Kruger National Park. Onderstepoort Journal of Veterinary Research 58: 145147
KRECEK, R.C., BOOMKER, J., PENZHORN, B.L. & SCHEEPERS, L. 1990. Internal parasites of
giraffes (Giraffa camelopardalis angolensis) from Etosha National Park, Namibia. Journal of
Wildlife Diseases 26: 395-397
PENZHORN, B.L. & LANGE, A.L. 1990. Hepatozoon and Ehrlichia in the same canine neutrophil.
Journal of the South African Veterinary Association 61: 95
PENZHORN, B.L. 1990. Parasitologie: 'n raakvlak tussen Veeartsenykunde en Dierkunde. Publikasies
Universiteit van Pretoria, Nuwe Reeks 271: 1-14
SMUTS, M.M.S. & PENZHORN, B.L. 1988. Anatomical differences between the skulls of Equus zebra
and Equus burchelli. South African Journal of Zoology 23: 328-336
PENZHORN, B.L. & HORAK, I.G. 1989. Starlings, mountain zebras and ticks. Koedoe 32: 133-134
PENZHORN, B.L. 1988. Equus zebra. Mammalian Species 314: 1-7
PENZHORN, B.L. & VAN DER MERWE, N.J. 1988. Testis size and onset of spermatogenesis in Cape
mountain zebras (Equus zebra zebra). Journal of Reproduction and Fertility 83: 371-375
PENZHORN, B.L. & RAUTENBACH, I.L. 1988. Reproduction of the Egyptian fruit bat Rousettus
aegyptiacus in the southern tropics. South African Journal of Wildlife Research 18: 88-92
VAN DER MERWE, N.J., RAUTENBACH, I.L. & PENZHORN, B.L. 1988. A new pattern of early
embryonic development in the seasonally breeding non-hibernating lesser yellow house bat
Scotophilus borbonicus (E. Geoffroy, 1803)(Chiroptera: Vespertilionidae). Annals of the
Transvaal Museum 34: 551-556
PENZHORN, B.L. 1987. Descriptions of incisors of known-age Cape mountain zebras, Equus zebra
zebra, from the Mountain Zebra National Park. Onderstepoort Journal of Veterinary Research 54:
135-141
PENZHORN, B.L. & LLOYD, P.H. 1987. Comparisons of reproductive parameters of two Cape
mountain zebra populations. Journal of Reproduction and Fertility, Supplement 35: 661-663
PENZHORN, B.L. & GRIMBEEK, R.J. 1987. Incisor wear in free-ranging Cape mountain zebras.
South African Journal of Wildlife Research 17: 99-102
VAN DER VEEN, H.J. & PENZHORN, B.L. 1987. The chromosomes of the tsessebe Damaliscus
lunatus. South African Journal of Zoology 22: 311-313
PENZHORN, B.L. & PETRICK, S.W.T. 1986. Hydrocoele associated with unilateral inguinal hernia in a
young Basset hound. Journal of Small Animal Practice 27: 81-84
PENZHORN, B.L., BERTSCHINGER, H.J. & COUBROUGH, R.I. 1986. Reconception of mares
following termination of pregnancy with Prostaglandin F2ά before and after day 35 of pregnancy.
Equine Veterinary Journal 18: 215-217
PENZHORN, B.L. 1985. Reproductive characteristics of a free-ranging population of Cape mountain
zebra (Equus zebra zebra). Journal of Reproduction and Fertility 73: 51-57
PENZHORN, B.L. & GILBERT, R.O. 1985. Induction of oestrus and ovulation by means of
Prostaglandin and Gonadoliberin (GnRH) treatment in an old mare barren for 2 breeding
seasons. Journal of the South African Veterinary Association 56: 53-54
PENZHORN, B.L., GILBERT, R.O. & VAN HEERDEN, J. 1985. Hydrallantois in a bovine, leading to
rupture of the prepubic tendon and abdominal musculature. Journal of the South African
Veterinary Association 56: 115
PENZHORN, B.L. 1985. Necrosis and abscessation of placental sites in a Pekingese bitch. Journal of
the South African Veterinary Association 56: 135-136
PENZHORN, B.L. 1985. An old reference to hartebeest in the Transvaal Lowveld. Koedoe 28: 69-71
PENZHORN, B.L. 1984. A long-term study of social organisation and behaviour of Cape mountain
zebras. Zeitschrift für Tierpsychologie (now Ethology) 64: 97-146
PENZHORN, B.L. 1984. Dental abnormalities in free-ranging Cape mountain zebras (Equus zebra
zebra). Journal of Wildlife Diseases 20: 161-166
PENZHORN, B.L. 1984. Observations on mortality of free-ranging Cape mountain zebras Equus zebra
zebra. South African Journal of Wildlife Research 14: 89-90
PENZHORN, B.L. 1982. Habitat selection by Cape mountain zebras in the Mountain Zebra National
Park. South African Journal of Wildlife Research 12: 48-54
PENZHORN, B.L. 1982. Age determination in Cape mountain zebras in the Mountain Zebra National
Park. Koedoe 25: 89-102
PENZHORN, B.L. 1982. Soil-eating by Cape mountain zebras in the Mountain Zebra National Park.
Koedoe 25: 83-88
PENZHORN, B.L. 1982. Home range sizes of Cape mountain zebras in the Mountain Zebra National
Park. Koedoe 25: 103-108.
PENZHORN, B.L. 1982. A partial albino Cape Glossy Starling. Ostrich 53: 20
PENZHORN, B.L. 1981. Association between birds and mountain zebras. Ostrich 52: 63-64
PENZHORN, B.L. 1979. Social organisation of the Cape mountain zebra Equus z. zebra in the
Mountain Zebra National Park. Koedoe 22: 115-156
ERASMUS, T., PENZHORN, B.L. & FAIRALL, N. 1978. Chemical composition of faeces as an index
of veld quality. South African Journal of Wildlife Research 8: 19-24
PENZHORN, B.L. 1978. Body growth of the springbok Antidorcas marsupialis in the Mountain Zebra
National Park. South African Journal of Wildlife Research 8: 171-172
PENZHORN, B.L. 1978. Growth of a Pied Crow nestling. Ostrich 49: 85-86
PENZHORN, B.L. 1977. A note on the re-introduction of grey rhebuck Pelea capreolus to the Addo
Elephant National Park. Koedoe 20: 201
PENZHORN, B.L. 1977. Toevoegings tot die blomplantlys van die Bergkwagga Nasionale Park.
Koedoe 20: 203-204
PENZHORN, B.L. 1977. Further bird records from the Bontebok and Mountain Zebra National Parks.
Koedoe 20: 205-207
HALL-MARTIN, A.J. & PENZHORN, B.L. 1977. Behaviour and recruitment of translocated black
rhinoceros Diceros bicornis. Koedoe 20: 147-162
PENZHORN, B.L. & BRONKHORST, P.J.L. 1976. Additions to the checklist of birds of the Mountain
Zebra National Park. Koedoe 19: 171-174
PENZHORN, B.L. & VAN STRAATEN, P.F. 1976. Additions to the check-list of birds of the Addo
Elephant National Park. Koedoe 19: 177-178
DE GRAAFF, G. & PENZHORN, B.L. 1976. The re-introduction of springbok Antidorcas marsupialis
into South African national parks - a documentation. Koedoe 19: 75-82
JOUBERT, S.C.J., DE VOS, V. & PENZHORN, B.L. 1975. Mammal research in the national parks of
South Africa. Publikasies Universiteit van Pretoria, Nuwe Reeks 97: 20-31
PENZHORN, B.L. 1974. Sex and age composition and dimensions of the springbok (Antidorcas
marsupialis) population in the Mountain Zebra National Park. Journal of the Southern African
Wildlife Management Association 4: 63-65
PENZHORN, B.L. & OLIVIER, M.C. 1974. A systematic checklist of the flowering plants collected in
the Addo Elephant National Park. Koedoe 17: 121-136
PENZHORN, B.L., ROBBERTSE, P.J. & OLIVIER, M.C. 1974. The influence of the African elephant
on the vegetation of the Addo Elephant National Park. Koedoe 17: 137-158
PENZHORN, B.L., SEYFARTH, R.M. & SEYFARTH, D. 1974. New distributional data: 5. Black
Harrier. Ostrich 45: 134
YOUNG, E., ZUMPT, F., BOOMKER, J., PENZHORN, B.L. & ERASMUS, B. 1973. Parasites and
diseases of Cape mountain zebra, black wildebeest, mountain reedbuck and blesbok in the
Mountain Zebra National Park. Koedoe 16: 77-81
YOUNG, E. & PENZHORN, B.L. 1972. The reaction of the Cape mountain zebra Equus zebra zebra to
certain chemical immobilization drugs. Koedoe 15: 95-96
PENZHORN, B.L. 1971. A note on the sex ratio of steenbok Raphicerus campestris in the Kalahari
Gemsbok National Park. Koedoe 14: 61-64
PENZHORN, B.L. 1971. A summary of the re-introduction of ungulates into South African national
parks (to 31 December 1970). Koedoe 14: 145-159
PENZHORN, B.L. 1970. A check-list of the flowering plants in the herbarium of the Mountain Zebra
National Park. Koedoe 13: 131-146
PENZHORN, B.L. 1969. 'n Nota oor die gebruik van die benaming "kwagga". Koedoe 12: 104-105
PENZHORN, B.L. & MORRIS, A.K. 1969. A supplementary checklist of the birds recorded in the Addo
Elephant National Park. Koedoe 12: 106-107
PENZHORN, B.L. & MORRIS, A.K. 1968. New distributional data: 1. House Sparrow. Ostrich 39: 272