serological evidence of bluetongue in game animals in botswana.using the agar gel precipitin technique the sera of 397 african buffalo (syncerus caffer) and 90 sera of other common game species were examined for bluetongue antibodies. of the adult buffalo 283 out of 325 (87 per cent) were positive. buffalo calves were positive in 25 out of 72 cases (35 per cent). positive reactions were also recorded in lechwe (kobus leche), tsessebe (damaliscus lunatus), red hartebeeste (alcelaphus buselaphus), gemsbok (oryx gazella), sable (hippotragus niger) and impala ( ...1978204086
blood parasites of some wild bovidae in botswana.blood smears from a total of 282 wild bovidae from ngamiland, botswana were examined for the presence of blood parasites. the following species were sampled: 190 african buffalo, 23 impala, 10 blue wildebeest, 18 tsessebe, 1 eland, 13 lechwe, 16 kudu and 11 sable antelope. in addition, blood from 36 of the above antelope and from a further 48 buffalo was inoculated into rodents to test for the presence of trypanosomes. an anaplasm morphologically indistinguishable from anaplasma marginale theile ...1975813170
effects of pasteurella haemolytica leukotoxin on neutrophils from white-tailed deer and several exotic ruminant species.pasteurella haemolytica leukotoxin is a pore-forming cytolysin which acts as a virulence factor in pasteurellosis of domestic ruminants. leukocytes from cattle, sheep and goats are susceptible to leukotoxin-induced lysis; however, leukocytes from non-ruminant species so far tested are resistant to leukotoxin-induced lysis. neutrophils obtained from three white-tailed deer, four saiga antelope, an addra gazelle, a grant's gazelle and a sable antelope were tested for susceptibility to the lytic ef ...19902382402
experimental infection of eland (taurotrages oryx), sable antelope (ozanna grandicomis) and buffalo (syncerus caffer) with foot-and-mouth disease virus.the course of experimental infection of a type sat 1 fmdv strain was studied in buffalo, sable antelope and eland following tongue inoculation and contact and has been compared with that in cattle. all species became infected, although disease was less severe in the game animals and larger amounts of virus were required to infect game animals than cattle. neutralizing antibody titres were high and were maintained for an extended period in buffalo, sable antelope and eland. the carrier state was ...19892584449
parelaphostrongylus tenuis in captive reindeer and sable antelope.parelaphostrongylus tenuis caused neurologic disease in 6 reindeer (rangifer tarandus tarandus) and 2 sable antelope (hippotragus niger) that were housed at the national zoological park conservation and research center in front royal, va. progressive hindlimb ataxia and weakness were seen in all affected animals. the parasite was recovered from the subdural space of one reindeer and was seen histologically within the neuropil of another reindeer and a sable antelope. in the other reindeer and sa ...19863957771
cryptosporidiosis in young artiodactyls.cryptosporidium was found in the intestinal tract of 10 blackbuck, 2 scimitar-horned oryx, 2 fringe-eared oryx, 2 addax, and 1 sable antelope that had diarrhea. cryptosporidia were most numerous in the small intestine, but also were found in the cecum, spiral colon, and colon. the small intestine had minimal inflammation in association with the cryptosporidia. salmonella typhimurium was isolated from 10 of the 51 animals evaluated, with extensive inflammation of the cecum, spiral colon, and colo ...19854077628
basic haematological values in antelopes--ii. the hippotraginae and the tragelaphinae.basic haematological values in 49 animals of five species of the subfamily hippotraginae, namely the roan antelope hippotragus equinus, sable antelope hippotragus niger, adax antelope addax nasomaculatus, gemsbok oryx oryx gazella gazella and scimitar horned oryx oryx damah and in 51 individuals of five species in the subfamily tragelaphinae, including the bushbuck tragelaphus scriptus, nyala tragelaphus angasi, greater kudu tragelaphus strepsiceros, cape eland tautotragus oryx and bongo bocercu ...19846149054
detection and control of rotavirus infections in zoo animals.fecal specimens from 15 exotic animal species, with and without diarrhea, were examined for the presence of rotavirus, bacterial enteropathogens, and intestinal parasites. a commercial enzyme-linked immunosorbent assay was used to detect antigens of rotavirus. rotavirus was detected in the feces of 20 (57%) of 35 of the animals, which included addax (addax nasomaculatus), nyala (tragelaphus angasi), saiga (saiga tatarica), white-tailed gnu (connochaetus gnou), greater kudu (tragelaphus strepsice ...19836315660
anaplasma infections in wild and domestic ruminants: a review.anaplasma marginale can be transmitted, will grow and can survive in a large number of domestic and wild animals. it is pathogenic in cattle, and usually produces nonapparent or mild infections in other species. anaplasma marginale has been recovered from cattle, sheep, goats, water buffalo (bubalus bubalis), white-tailed deer (odocoileus virginianus), mule deer (odocoileus hemionus hemionus), black-tailed deer (odocoileus hemionus columbianus), pronghorn (antilocapra americana americana), rocky ...19846716555
babesia, theileria and anaplasma spp. infecting sable antelope, hippotragus niger (harris, 1838), in southern africa.some observations are recorded on blood parasites of sable antelopes. blood smears of 124 of these antelopes from south africa and zimbabwe were examined and 7 were found to be positive for a babesia sp., identified as babesia irvinesmithi martinaglia 1936. a total of 70 of the smears were positive for theilerial piroplasms, while 1 smear had macroschizonts (with cytomeres) and microschizonts of a theileria (= cytauxzoon) sp. one blood smear was positive for an anaplasma sp. attempts to isolate ...19826817250
the anatomy of the omasum of some zambian game species.the gross anatomy of the omasum of 11 different zambian game species are described. these include roan antelope, sable antelope, wildebeest, kudu, kafue lechwe, puku, reedbuck, impala, bushbuck, oribi and duiker. lamellar area and papilla density and shape are reported.19938129169
the role of wild animals, other than buffalo, in the current epidemiology of foot-and-mouth disease in zimbabwe.between 1989 and 1992, 7970 wild ungulates, comprising 14 different species, were tested for antibodies to types sat 1, sat 2 and sat 3 foot-and-mouth disease (fmd) virus. of these 1.2% were found to be positive and these included impala (aepyceros melampus), eland (taurotragus oryx), waterbuck (kobus ellipsiprymnus) and sable (hippotragus niger). all the positive animals were either from the wildlife areas where buffalo (syncerus caffer) occur or from ranches where clinical fmd had occurred in ...19938270015
the r- and g-banded karyotypes of the sable antelope (hippotragus niger).the karyotype of the sable antelope has been investigated by rbg- and gtg-banding techniques. chromosome preparations were made from peripheral blood lymphocytes, and primary fibroblast cells were cultured from skin biopsies. the rbg-banded chromosomes were identified and classified according to the standard conventions used for cattle and goat. the diploid number of the sable antelope is 60. the autosomes are all acrocentric, the x is a large acrocentric, and the y is a minute acrocentric. comp ...19938270772
longistrongylus curvispiculum (nematoda: trichostrongyloidea) in free-ranging exotic antelope in texas.longistrongylus curvispiculum was recovered from free ranging sable (hippotragus niger), addax (addax nasomaculatus) and biesa oryx (oryx beisa) on two ranches in central texas (usa). these nematodes represented a small portion of the total abomasal worm burden dominated by haemonchus contortus. female l. curvispiculum easily could be confused with other ostertaginae, but the spicules of the males were diagnostic.19938355363
a comparative ultrastructural study of the parotid gland acinar cells of nine wild ruminant species (mammalia, artiodactyla).the ultrastructural similarities and differences of the parotid gland acinar cells of nine wild ruminants (roe deer, nyala, tahr, eld's deer, red deer, pere david's deer, european mouflon, african buffalo, sable antelope) representing three feeding types i.e. concentrate selectors (cs), grass and roughage eaters (gr) and intermediate feeders (im) were compared. the parotid acinar cells of the cs contained more granular endoplasmic reticulum, golgi-complexes and secretory granules than those of t ...19969090994
growth of cowdria ruminantium in tissue culture endothelial cell lines from wild african mammals.endothelial cell cultures were established from several wild african mammalian species. long-term cultures were established from three ruminants, stable antelope (hippotragus niger), buffalo (syncerus caffer), and eland (tragelaphus oryx), and from an omnivore, the bushpig (potamochoerus porcus). cowdria ruminanntium was isolated from plasma of clinically affected animals in these four cell lines and in bovine endothelial cells used routinely for c. ruminantium propagation. nineteen different st ...19989577776
isolation and characterization of a babesia species from rhipicephalus evertsi evertsi ticks picked off a sable antelope (hippotragus niger) which died of acute babesiosis.transmission of a babesia species to susceptible cattle by rhipicephalus evertsi evertsi ticks picked off a sable which died of acute babesiosis is described. the parasite was initially isolated by feeding r. e. evertsi ticks on a susceptible, splenectomised bovine which developed parasitaemia. blood stabilate from the parasitaemic bovine produced a fatal babesiosis in a spleen--intact bovine. clinical signs shown by the affected animals corresponded with those of acute babesiosis. parasitologic ...19989741050
helminths and bot fly larvae of wild ungulates on a game ranch in central province, zambia.helminths and bot fly larvae were collected from 11 wild ungulate species on a game ranch in the central province of zambia. new host-parasite records are: calicophoron sp. from defassa waterbuck kobus ellipsiprymnus defassa and kafue lechwe kobus leche kafuensis; avitellina centripunctata, gaigeria pachyscelis and gedoelstia cristata from tsessebe damaliscus lunatus lunatus; cooperia rotundispiculum from common reedbuck redunca arundinum; dictyocaulus filaria from greater kudu tragelaphus strep ...19989741058
prevalence of toxoplasma gondii antibodies in sera of domestic pigs and some wild game species from zimbabwe.serum samples of domestic pigs (sus scrofa), elands (taurotragus oryx), sable antelopes (hippotragus niger), warthogs (phacochoerus aethiopicus), bushpigs (koiropotamus [potamochoerus] koiropotamus), white rhinos (ceratotherium simus), african buffalos (syncerus caffer), wildebeest (connochaetas taurinus), and african elephants (loxodonta africana) from zimbabwe were tested for toxoplasma gondii igg antibodies by the modified agglutination test (mat) with whole formalized tachyzoites and mercapt ...199910219323
synchronization of oestrous cycles in sable antelope.techniques for manipulating the oestrous cycle of sable antelope, hippotragus niger, were evaluated in a captive population of 24 females maintained at the smithsonian institution's conservation and research center in front royal, va, usa. a secondary objective was to demonstrate the effectiveness of fecal steroid monitoring techniques as a non-invasive method of tracking experimental manipulations. controlled internal drug releasing (cidr) devices designed for cattle (type b, reduced in length ...199910610038
bilateral aural hyalohyphomycosis in sable antelope (hippotragus niger).three juvenile sable antelope (hippotragus niger) were diagnosed with bilateral aural hyalohyphomycosis based on histopathology. all three animals were suspected to be immunodeficient based on low igg levels determined using the zinc sulfate turbidity test. the serum and hepatic copper levels of one animal were below the bovine reference range. clinical signs in the three animals included bilateral ventral deviation of the pinnae with multifocal subcutaneous aural tumefaction and poor body condi ...200010982136
studies on the genus setaria viborg, 1795 in south africa. iii. setaria thwaitei mönnig, 1933.mönnig (1933) described setaria thwaitei from a sable antelope, hippotragus niger, the type host, as well as from roan antelope, hippotragus equinus, and waterbuck, kobus ellipsiprymnus. yeh (1959) considered setaria thwaitei to be synonym of setaria hornbyi. material collected from roan antelopes, sable antelopes and gemsbuck, oryx gazella, from several localities in the north and south of south africa, together with mönnig's (1933) material, were re-examined. measurements of the adult worms ob ...200415373332
pcr-rflp analysis: a promising technique for host species identification of blood meals from tsetse flies (diptera: glossinidae).a polymerase chain reaction with the restriction fragment length polymorphism (pcr-rflp) method using universal primers complementary to the conserved region of the cytochrome b gene (cyt b) of the mitochondrion dna (mtdna) of vertebrates was applied to the identification of the origin of blood meals in tsetse flies. blood samples from ten potential tsetse hosts of the family bovidae (cattle, water buffalo, red buffalo, waterbuck, springbok, goat, sheep, sable antelope, oryx and dik-dik) were in ...200515999278
molecular characterization of theileria species associated with mortality in four species of african antelopes.pathogen dna was isolated from roan antelope (hippotragus equinus), sable antelope (hippotragus niger), greater kudu (tragelaphus strepsiceros), and common gray duiker (sylvicapra grimmia) in south africa whose deaths were attributed to either theileriosis or cytauxzoonosis. we developed theileria species-specific probes used in combination with reverse line blot hybridization assays and identified three different species of theileria in four african antelope species. the close phylogenetic rela ...200516333074
comparative histology of antelope placentomes.the histological structure of ruminant (family: bovidae) placentomes in eight antelope species was compared to that of domestic cattle and sheep. the chorioallantoic villi differed in degree of branching, surface corrugation, and complexity of utero-placental junction. all species had the epitheliochorial type of placenta, with the epithelial lining of maternal caruncular crypts varying between cellular and syncytial types. uganda kob (kobus kob, reduncinae) and common duiker (sylvicapra grimmia ...198816726390
identification of a novel babesia sp. from a sable antelope (hippotragus niger harris, 1838).babesiosis in a sable antelope (hippotragus niger harris, 1838) was first reported in 1930; the parasite was named babesia irvinesmithi. recently, specimens from an adult sable that presented with a sudden onset of disease and that subsequently died during immobilization were submitted for molecular characterization. microscopic examination of thin blood smears revealed the presence of small piroplasms. dna was extracted from blood samples; the v4 variable region of the 18s rrna gene was amplifi ...200818508943
bovine-like coronaviruses isolated from four species of captive wild ruminants are homologous to bovine coronaviruses, based on complete genomic sequences.we sequenced and analyzed the full-length genomes of four coronaviruses (covs), each from a distinct wild-ruminant species in ohio: sambar deer (cervus unicolor), a waterbuck (kobus ellipsiprymnus), a sable antelope (hippotragus niger), and a white-tailed deer (odocoileus virginianus). the fecal samples from the sambar deer, the waterbuck, and the white-tailed deer were collected during winter dysentery outbreaks and sporadic diarrhea cases in 1993 and 1994 (h. tsunemitsu, z. r. el-kanawati, d. ...200818842722
are human p[14] rotavirus strains the result of interspecies transmissions from sheep or other ungulates that belong to the mammalian order artiodactyla?a limited number of human g6p[14] rotavirus strains that cause gastroenteritis in humans have been isolated in europe and australia. the complete genome sequences were determined for five of these human strains--b10925-97 (isolated in belgium in 1997), 111/05-27 (italy, 2005), pa169 (italy, 1987), mg6 (australia, 1993), and hun5 (hungary, 1997)--and their genetic relatedness to animal rotavirus strains was evaluated by sequencing the complete genome of the sheep rotavirus ovr762 (g8p[14]; spain, ...200919153225
ticks and tick-borne pathogens from wildlife in the free state province, south africa.eight ixodid tick species, associated with 59 free-ranging mammals belonging to 10 species, were collected at five different localities in the free state province, south africa. four of the study areas were nature reserves (willem pretorius, sandveld, tussen-die-riviere, and soetdoring), and one site was a private farm located in senekal district. the collection was performed from march 2006 until june 2006. ticks (n=569) and tissues from animals (n=52) were analyzed by polymerase chain reaction ...200919395753
in vitro cultivation of a theileria species from a roan antelope (hippotragus equinus).here we describe the in vitro isolation, propagation, and characterization of a theileria species from roan antelope (hippotragus equinus). cultures were initiated using parts of a prescapular lymph node of an infected roan antelope. after 16 days of culture propagation, the first subculture was carried out; thereafter, subcultures were carried out twice a week. standard methods for the cultivation of theileria macroschizonts were applied. dna was extracted from culture material and a partial po ...200919685077
trypanosoma brucei infection in asymptomatic greater kudus (tragelaphus strepsiceros) on a game ranch in zambia.trypomastogotes of trypanosoma brucei were detected from 4 asymptomatic kudus (tragelaphus strepsiceros) on a game ranch located approximately 45 km north east of lusaka, zambia. blood smears examined from 14 wildlife species comprising of the impala (aepyceros melampus), kafue lechwe (kobus leche kafuensis), sable antelope (hippotragus niger), tsessebe (damaliscus lunatus), warthog (phacochoerus aethiopicus), puku (kobus vardoni), zebra (equus burchelli), waterbuck (kobus ellipsiprymnus), bushb ...201020333288
detection and characterisation of papillomavirus in skin lesions of giraffe and sable antelope in south africa.papillomavirus was detected electron microscopically in cutaneous fibropapillomas of a giraffe (giraffa camelopardalis) and a sable antelope (hippotragus niger). the virus particles measured 45 nm in diameter. histopathologically, the lesions showed histopathological features similar to those of equine sarcoid as well as positive immunoperoxidase-staining of tissue sections for papillomavirus antigen. polymerase chain reaction (pcr) detected bovine papillomavirus (bpv) dna. bovine papillomavirus ...201122135920
pathology and immunohistochemistry of papillomavirus-associated cutaneous lesions in cape mountain zebra, giraffe, sable antelope and african buffalo in south lesions associated with papillomaviruses have been reported in many animal species and man. bovine papillomavirus (bvp) affects mainly the epidermis, but also the dermis in several species including bovine, the best-known example being equine sarcoid, which is associated with bvp types 1 and 2. this publication describes and illustrates the macroscopic and histological appearance of bpv-associated papillomatous, fibropapillomatous or sarcoid-like lesions in cape mountain zebra (equus zebra ...201122135923
dna sequence analyses reveal co-occurrence of novel haplotypes of fasciola gigantica with f. hepatica in south africa and zimbabwe.the aim of this study was to identify and determine the genetic diversity of fasciola species in cattle from zimbabwe, the kwazulu-natal and mpumalanga provinces of south africa and selected wildlife hosts from zimbabwe. this was based on analysis of dna sequences of the nuclear ribosomal internal transcribed spacer (its1 and 2) and mitochondrial cytochrome oxidase 1 (co1) regions. the sample of 120 flukes was collected from livers of 57 cattle at 4 abattoirs in zimbabwe and 47 cattle at 6 abatt ...201526476916
mycobacterium tuberculosis at the human/wildlife interface in a high tb burden country.this study reports on an investigation of mycobacterium tuberculosis cases in mostly captive wild animals using molecular typing tools [variable number of tandem repeat (vntr) typing and restriction fragment length polymorphism typing]. the investigation included cases from (i) the national zoological gardens of south africa (nzg) recorded between 2002 and 2011; (ii) johannesburg zoo, where tuberculosis was first diagnosed in 2007 and has since been detected in three antelope species; (iii) a re ...201324171848
comparisons among selected neonatal biomedical parameters of four species of semi-free ranging hippotragini: addax (addax nasomaculatus), scimitar-horned oryx (oryx dammah), arabian oryx (oryx leucoryx), and sable antelope (hippotragus niger).basic biomedical data from 164 neonates of four species of the tribe hippotragini, addax (addax nasomaculatus), scimitar-horned oryx (oryx dammah), arabian oryx (oryx leucoryx), and sable antelope (hippotragus niger), were compared at one zoological institution over a 9-year period. measured biomedical parameters included body weight, temperature, pulse and respiratory rates, packed cell volume (pcv), total plasma protein, glucose, igg assessment via zinc sulfate turbidity, and white blood cell ...200111319780
questing ixodid ticks on the vegetation of sable antelope and multi-herbivore enclosures in thabazimbi.this survey of ixodid ticks was the first to compare the species composition and population dynamics of free-living ticks in intensive, sable antelope breeding enclosures, now commonplace in commercial wildlife ranching in south africa, with those of multi-herbivore enclosures. the species composition, abundance and seasonal abundance of questing ixodid ticks on the vegetation in intensive breeding enclosures for sable antelope (hippotragus niger), on which strategic tick control is practised, w ...201526244584
complete mitochondrial dna sequence of the endangered giant sable antelope (hippotragus niger variani): insights into conservation and taxonomy.the giant sable antelope is one of the most endangered african bovids. populations of this iconic animal, the national symbol of angola, were recently rediscovered, after many decades of presumed extinction. even so, their numbers are scarce and hence conservation plans are essential. however, fundamental information such as its taxonomic position, time of divergence and degree of genetic variation are still lacking. here, we used a museum preserved horn as a source of dna to describe, for the f ...201525527983
identifying space use at foraging arena scale within the home ranges of large intermediate spatiotemporal scale of food procurement by large herbivores is evident within annual or seasonal home ranges. it takes the form of settlement periods spanning several days or weeks during which foraging activity is confined to spatially discrete foraging arenas, separated by roaming interludes. extended by areas occupied for other activities, these foraging arenas contribute towards generating the home range structure. we delineated and compared the foraging arenas exploited by ...201526066834
how muscle mass is part of the fabric of behavioral ecology in east african bovids (madoqua, gazella, damaliscus, hippotragus).tissue composition and the distribution of body mass are described for four genera of east african bovidae (madoqua, gazella, damaliscus, hippotragus) with supporting data from four others (neotragus, oryx, tragelaphus, connochaetes). these species are high in muscle mass, an adaptation convergent with other high-speed terrestrial cursors, bounders, and saltators. the segments below the elbow/cubitus and knee/stifle/genu joints in small bovids are both lighter in percent of total body mass (8.6% ...19979108204
x chromosome evolution in cetartiodactyla.the phenomenon of a remarkable conservation of the x chromosome in eutherian mammals has been first described by susumu ohno in 1964. a notable exception is the cetartiodactyl x chromosome, which varies widely in morphology and g-banding pattern between species. it is hypothesized that this sex chromosome has undergone multiple rearrangements that changed the centromere position and the order of syntenic segments over the last 80 million years of cetartiodactyla speciation. to investigate its ev ...201728858207
trophy hunting and sustainability: temporal dynamics in trophy quality and harvesting patterns of wild herbivores in a tropical semi-arid savanna ecosystem.the selective nature of trophy hunting may cause changes in desirable phenotypic traits in harvested species. a decline in trophy size of preferred species may reduce hunting destination competitiveness thus compromising the sustainability of trophy hunting as a conservation tool. we explored the trophy quality and trends in harvesting patterns (i.e., 2004-2015) of cape buffalo (syncerus caffer), african elephant (loxodonta africana), greater kudu (tragelaphus strepsiceros) and sable (hippotragu ...201627736930
hybridization following population collapse in a critically endangered antelope.population declines may promote interspecific hybridization due to the shortage of conspecific mates (hubb's 'desperation' hypothesis), thus greatly increasing the risk of species extinction. yet, confirming this process in the wild has proved elusive. here we combine camera-trapping and molecular surveys over seven years to document demographic processes associated with introgressive hybridization between the critically endangered giant sable antelope (hippotragus niger variani), and the natura ...201626732144
challenges and economic implications in the control of foot and mouth disease in sub-saharan africa: lessons from the zambian experience.foot and mouth disease is one of the world's most important livestock diseases for trade. fmd infections are complex in nature and there are many epidemiological factors needing clarification. key questions relate to the control challenges and economic impact of the disease for resource-poor fmd endemic countries like zambia. a review of the control challenges and economic impact of fmd outbreaks in zambia was made. information was collected from peer-reviewed journals articles, conference proce ...201425276472
using fecal hormonal and behavioral analyses to evaluate the introduction of two sable antelope at lincoln park zoo.introductions of sable antelope (hippotragus niger) can be difficult due to the potential ensuing aggression compounded by their large horns. the goal was to use hormonal assays and behavioral analyses to evaluate the success of an introduction of 2 adult females at lincoln park zoo. the objectives were to (a) document behavioral and hormonal changes in 2 female sable antelope during the introduction, (b) compare fecal glucocorticoid metabolites (fgm) in each individual during the introduction s ...201122044294
oropharyngeal teratoma in a neonatal sable antelope (hippotragus niger).a neonatal male sable antelope (hippotragus niger) was found dead. a 5 by 12-cm lobulated mass was present in the oral cavity, attached to the caudal border of the soft palate; this mass contained hair, cartilage, bone, nervous tissue, muscle, and multiple gland-like structures. histopathologic diagnosis was consistent with oropharyngeal teratoma. as a result of the lack of wear of the fetal hooves, the firm, collapsed appearance of the lungs, and the lack of other gross or histopathologic abnor ...200818634222
an exceptional case of historical outbreeding in african sable antelope populations.empirical investigations of intraspecific outbreeding and subsequent introgressive hybridization in natural populations are rare, particularly among conspecific populations of large mammals. using mitochondrial dna data [partial control region (496 basepairs - bp) and cytochrome b gene (343 bp) sequences analysed from 95 individuals representing 17 sampling locations scattered through the african miombo (brachystegia) woodland ecosystem] and phylogeographical statistical procedures (gene genealo ...200212074727
mitochondrial dna population structure of roan and sable antelope: implications for the translocation and conservation of the species.mitochondrial dna (mtdna) control region sequences were analysed to determine the geographical genetic structure of hippotragus niger (sable antelope) and h. equinus (roan antelope). analyses by amova, minimum evolution networks, parsimony, neighbour joining and maximum likelihood show that the roan antelope populations are geographically partitioned and that their phylogeography corresponds well with subspecific boundaries. in sharp contrast, however, our sequence data group all the sable antel ...199910065541
spatial integration in infant sable antelope, hippotragus niger.i studied the relationship between the timing of birth relative to other births in the social group, and the rate of spatial integration into the herd in six cohorts of semi-free-ranging infant sable antelope at the national zoological park's conservation and research center near front royal, virginia. all calves spent the initial few days of life resting in seclusion ('hiding'), and interacted with mothers and other conspecifics only during activity bouts. with time, calves became increasingly ...19989790712
characterization of estrous cyclicity in the sable antelope (hippotragus niger) through fecal progestagen monitoring.fecal progesterone metabolite monitoring techniques were validated for the sable antelope and used to characterize ovarian cycle dynamics and reproductive seasonality in a captive population at the national zoological park's conservation and research center. hormone was homogeneously distributed within fecal samples. longitudinal fluctuations in fecal progesterone metabolites were consistent with typical luteal phase patterns and corresponded closely with changes in serum progesterone. the lag t ...19989748411
absence of geographic chromosomal variation in the roan and sable antelope and the cytogenetics of a naturally occurring hybrid.the determination of geographic chromosomal variation in rare or endangered species, or those of special management concern, is important, since geographically defined cytotypes can negatively influence breeding programs involving founders drawn from widely divergent localities. we cytogenetically analyzed specimens of the roan (hippotragus equinus) and sable antelope (h. niger) collected from widely divergent localities throughout their respective ranges. each species was characterized by a dip ...19958521725
an outbreak of babesiosis in imported sable antelope (hippotragus niger).a complete necropsy performed on 2 sable antelope (hippotragus niger), revealed lesions concomitant with a massive haemolytic crisis. these included widespread oedema and anaemia of the carcass, severe oedema of the lungs, petechiae and echymoses of the epicardium, a moderate splenomegaly and a severe haemoglobinuria. the histopathological lesions included a moderate alveolar oedema, the presence of haemosiderin in the spleen and lymph nodes, and mild degenerative changes of the renal tubular ep ...19912051446
gastrointestinal nematodes in captive roan and sable antelope. 19863798683
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