renal medullary amyloidosis in dorcas gazelles.between january 1976 and september 1987 renal medullary amyloidosis (rma) was diagnosed in 17 dorcas gazelles; the necropsy prevalence rate was 17/32 (53%). the most severe amyloid deposits were in the renal medulla; glomeruli were spared. renal cortical lesions of interstitial fibrosis and tubular atrophy and dilatation significantly correlated with rma (p less than 0.01) and were considered to be secondary changes. there were varying degrees of lymphoplasmacytic inflammation and tubular cast f ...19892711570
psoroptic ear mange (psoroptes cuniculi, delafond, 1859) in domestic and wild ruminants in israel.otoacariasis, caused by psoroptes cuniculi (delafond, 1859) is reported in sheep (ovis aries), domestic goats (capra aegagrus hircus), mountain goats (capra ibex nubiana) and yaez (a cross between domestic and mountain goats). captive and captured deer (gazella gazella and gazella dorcas) were found negative for ear mites. sheep and mountain goats were found to be the most affected while goats and yaez only sporadically so. the clinical manifestations are described and the results are discussed ...19854002605
necrotic stomatitis of captive dorcas gazelles. 19854049705
post-mortem semen cryopreservation and characterization in two different endangered gazelle species (gazella gazella and gazella dorcas) and one subspecies (gazella gazelle acaiae).both gazella gazella and gazella dorcas are endangered species with continually dwindling population size, yet basic knowledge on their spermatozoa is missing. semen collected post-mortem (pm) from the cauda epididymis of five adult gazelles (three gazella gazella gazella, one gazella gazella acaiae and one g. dorcas) was cryopreserved using directional freezing of large volumes (8 ml) with egg-yolk-free extender. sperm size measurements and sybr-14/propodium iodide (pi) viability stain validati ...200616530260
cutaneous chlorellosis in a gazelle (gazella dorcas).cutaneous chlorellosis in a gazelle caused a chronic granulomatous inflammation in the subcutaneous tissue of the carpus. the diagnosis was based on the intense green color of the lesion and the presence of organisms identified as algae of the order chlorellales. according to morphologic and ultrastructural features, the genus bracteacoccus is most likely.200212014503
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
some effects of water deprivation on dorcas gazelle (gazella dorcas) in the sudan.1. the effects of dehydration for 10 days and subsequent rehydration for 2 days on some physiological and biochemical parameters were studied in the dorcas gazelle. 2. at the end of the 10 days of dehydration, feed intake and body weight were decreased by 42 and 29% of the control values, respectively. rehydration restored most of the loss in feed intake and body weight. 3. dehydration decreased the water content in the faeces of the gazelles by 41%. rehydration restored 36% of the lost faecal w ...19882900115
[disseminated histoplasmosis in a dorcas gazelle (gazella dorcas neglecta) kept in captivity conditions in spain].a 17 month old female gazelle dorca (gazella dorcas neglecta), kept in captivity in a spanish zoo, showed several symptoms of illness including fever, lethargy and behavioural changes. (x)-ray revealed ruminal "foreign bodies" and pneumonia with a nodular pattern. after surgical intervention, the animal died. at necropsy, histopathologic and microbiological findings were consistent with the diagnosis of disseminated histoplasmosis, with an inflammatory histological pattern associated with immuno ...200919631166
redescription of eimeria dorcadis mantovani, 1966 (apicomplexa: eimeriidae) from the dorcas gazelle (gazella dorcas) in saudi arabia.eimeria dorcadis mantovani, 1966 is redescribed from dorcas gazelle (gazella dorcas (l.)) from saudi arabia. oocysts were detected in 7 out of 22 faecal samples (32%) using floatation method. the sporulated oocysts are cylindrical, slightly flattened at the micropylar pole, measure in average 32 x 19 microm (27-36 x 16-24 microm), length/width ratio being 1.7 (1.5-2.1). oocyst wall is 1.2 microm thick, smooth, double-layered; outer layer is slightly thicker, light blue in colour; inner layer bro ...201222439425
aggressive behavior and hair cortisol levels in captive dorcas gazelles (gazella dorcas) as animal-based welfare indicators.ensuring welfare in captive wild animal populations is important not only for ethical and legal reasons, but also to maintain healthy individuals and populations. an increased level of social behaviors such as aggression can reduce welfare by causing physical damage and chronic stress to animals. recently, cortisol in hair has been advanced as a non-invasive indicator to quantify long-lasting stress in many species. the sensitivity of social behavior and hair cortisol concentration was evaluated ...201627623487
resource partitioning between ungulate populations in arid environments.herbivores are major drivers of ecosystem structure, diversity, and function. resilient ecosystems therefore require viable herbivore populations in a sustainable balance with environmental resource availability. this balance is becoming harder to achieve, with increasingly threatened species reliant on small protected areas in increasingly harsh and unpredictable environments. arid environments in north africa exemplify this situation, featuring a biologically distinct species assemblage expose ...201627656279
a comparative study of ejaculate traits in three endangered ungulates with different levels of inbreeding: fluctuating asymmetry as an indicator of reproductive and genetic stress.we studied three closely related species of endangered gazelles (gazella dorcas, gazella dama and gazella cuvieri) with different levels of inbreeding in order to determine at which intensities inbreeding influences ejaculate traits. we also examined whether fluctuating asymmetry (fa) is a reliable indicator of genetic as well as reproductive stress. our results show that, within each population, the individual coefficient of inbreeding is inversely related to ejaculate quality only in the speci ...200010853729
inbreeding and reproduction in endangered ungulates: preservation of genetic variation through the organization of genetic resource banks.there is a constant increase in the number of species suffering marked reductions in population size. this reduction in size and the lack of genetic flow may lead to a decrease in genetic variability and to matings between close relatives (i.e. inbreeding) with an ensuing reduction in fitness. it is thus important to understand the mechanism underlying the deleterious effects of inbreeding and to develop reproductive biotechnologies that will allow the reduction of inbreeding depression by facil ...200616984472
high levels of dna fragmentation in spermatozoa are associated with inbreeding and poor sperm quality in endangered ungulates.inbreeding is known to cause deleterious effects upon reproduction and survival, but its effects upon sperm dna integrity have not been examined. in the present study, we analyzed this relationship among three endangered ungulates: gazella cuvieri, gazella dama mhorr, and gazella dorcas neglecta. in addition, we examined whether levels of sperm dna fragmentation are associated with semen quality. the magnitude of sperm dna damage in the two species with high levels of inbreeding (g. cuvieri and ...201020505170
wild gazelles of the southern levant: genetic profiling defines new conservation priorities.the mountain gazelle (gazella gazelle), dorcas gazelle (gazella dorcas) and acacia gazelle (gazella arabica acacia) were historically abundant in the southern levant, and more specifically in israel. anthropogenic and natural changes have caused a rapid decline in gazelle populations, raising concerns about their conservation status and future survival. the genetic profile of 111 wild gazelles from israel was determined based on three regions of mitochondrial dna (control region, cytochrome b an ...201525760948
before they are gone - improving gazelle protection using wildlife forensic genetics.throughout their habitats gazelles (genus gazella) face immediate threats due to anthropogenic effects and natural environmental changes. excessive poaching plays a major role in their populations decline. three unique populations of gazelles currently live in israel: mountain gazelle (gazella gazella), dorcas gazelle (gazella dorcas) and acacia gazelle (gazella arabica acacia). ongoing habitat degradation and constant pressure from illegal hunting has caused a continuous decrease in the last 10 ...201627294679
retrospective evaluation of histopathologic findings in captive gazelle species.capturing disease trends among different species has indisputable value to both veterinary clinicians and zoo managers for improving the welfare and management of zoo species. the causes of mortality for eight species of gazelle (addra gazelle, nanger dama; dorcas gazelle, gazella dorcas; grant's gazelle, nanger granti; sand gazelle, gazella leptoceros; saudi goitered gazelle, gazella subgutturosa; soemmerring's gazelle, nanger soemmerringii; thomson's gazelle, eudorcas thomsonii; and speke's ga ...201627010271
comparison of various extenders for freeze-preservation of semen from selective captive wild ungulates.semen collected by electroejaculation from selected captive wild ungulates was used to evaluate the cryoprotective ability of 4 semen diluents. three species of ungulates were used: blesbok (damaliscus dorcas phillipsi), dorcas gazelle (gazella dorcas), and onager (equus hemionus onager). fresh semen was immediately evaluated for the percentage of motility and the progressive motility, and an aliquot was fixed for evaluation of the acrosomal integrity of spermatozoa. the remaining volume of ejac ...19817327998
carnivore fecal chemicals suppress feeding by alpine goats (capra hircus).the efficacy of carnivore and ungulate fecal chemicals in suppressing the feeding behavior of alpine goats (capra hircus) was examined. in the first four experiments, goats were offered food covered with paper strips treated with fecal extracts of the bengal tiger, siberian tiger, african lion, and brown bear, respectively; food covered with solvent-treated and untreated (plain) papers served as controls in each experiment. goats made fewer head entries into, and ate less food from, buckets cont ...199324248787
detection of coxiella burnetii infection in a saharawi dorcas gazelle (gazella dorcas neglecta).coxiella burnetii, the causative agent of q fever, can infect a wide range of host species, but limited information exists on the occurrence and implications of infection in wild species. this study describes a natural infection in a population of dorcas gazelles ( gazella dorcas ) from a zoo. a 9-yr-old male saharawi dorcas gazelle ( gazella dorcas neglecta) tested positive on enzyme-linked immunosorbent assay (elisa) and fecal polymerase chain reaction (pcr). despite treatment with oxytetracyc ...201627691954
coxiella burnetii detected in three species of endangered north african gazelles that recently aborted.coxiella (c.) burnetii is the etiological agent of the zoonotic disease known a q fever. this agent can infect multiple hosts although its pathogenic potential in wild ruminants has been poorly studied. the polymerase chain reaction and the serological test detected the presence of c. burnetii in a population of north african gazelles (n = 355), comprising dorcas gazelle (gazella dorcas neglecta), dama gazelle (nanger dama mhorr) and cuvier's gazelle (gazella cuvieri) which, some of them, they r ...201727771116
data on phylogenetic analyses of gazelles (genus gazella) based on mitochondrial and nuclear intron markers.the data provided is related to the article "phylogenetic analyses of gazelles reveal repeated transitions of key ecological traits and provide novel insights into the origin of the genus gazella" [1]. the data is based on 48 tissue samples of all nine extant species of the genus gazella, namely gazella gazella, gazella arabica, gazella bennettii, gazella cuvieri, gazella dorcas, gazella leptoceros, gazella marica, gazella spekei, and gazella subgutturosa and four related taxa (saiga tatarica, a ...201627054158
output of gastrointestinal nematode eggs in the feces of captive gazelles (gazella dama mhorr, gazella cuvieri and gazella dorcas neglecta) in a semiarid region of southeastern spain.feces from 62 captive african gazelles, including mhorr gazelles (gazella dama mhorr), cuvier's gazelles (gazella cuvieri), and dorcas gazelles (gazella dorcas neglecta), were examined over the course of a year to quantitate nematode egg excretion patterns. strongyloides sp. eggs appeared only in g. dama during the rainy season. trichostrongylidae egg excretion showed a marked seasonal variation, with very low levels during the dry and hot period, a finding that is probably attributable to hypob ...200617319122
some studies on gastrointestinal parasites infecting deer (dorcas gazelles) in matrouh governorate.faecal samples were collected directly after defecation from living egyptian deer, dorcas gazelles. 28 out of 63 (44.44 %) faecal samples harboured gastrointestinal nematode eggs. the positive faecal samples were cultured to collect the infective third stage larvae (l3) for taxonomic identification. they were trichostrongylus colubriformis, ostertagia ostertatgi and oeseophagostomum venalosum.200415587323
sarcocystis infections in gazelles at the king khalid wildlife research centre, saudi arabia.the prevalence of sarcocystis species in muscle samples from gazelles kept as breeding groups at the king khalid wildlife research centre, saudi arabia, was determined by fibreoptic examination, pepsin digestion and histological techniques. no macroscopic sarcocysts were detected by fibreoptic examination, and the overall prevalence of sarcocystis was 66 x 7 per cent by pepsin digestion, and 39 x 9 per cent by histological examination. by digestion, the tongue contained the highest density of br ...200010731071
antibody prevalence of toxoplasmosis in arabian gazelles and oryx in saudi arabia.we determined the antibody prevalence of toxoplasmosis (toxoplasma gondii infections) in antelopes in saudi arabia. serum samples from 324 gazella subgutturosa marica, 202 gazella gazella, 70 gazella dorcas, and 12 arabian oryx (oryx leucoryx) were tested by the indirect hemagglutination test. antibodies to t. gondii were detected in 13(4.0%) g. subgutturosa marica, 12(5.9%) g. gazella, 3(4.3%) g. dorcas, and in none of the arabian oryx sampled. more adult gazelles were seropositive than juvenil ...19947760490
hematologic and biochemical observations in gazella dama, g. dorcas and g. cuvieri.1. blood samples obtained from 114 animals of three species of the genus gazella (gazella dama, gazella dorcas and gazella cuvieri) were analyzed from hematology (osmotic fragility, red blood cells morphology and hemoglobin electrophoresis) and biochemical values (glucose-6-phosphate dehydrogenase, pyruvate kinase and glutathione reductase deficiencies and superoxide dismutase activity). 2. standard methods were used. hemoglobin polymorphism was found. 3. there was no abnormality in the osmotic ...19911769211
a survey for cryptosporidium spp. in mammals at the barcelona zoo.mammals housed at the barcelona zoo belonging to the orders carnivora, artiodactyla, perissodactyla and proboscidea were examined for cryptosporidium infections. a total of 183 fecal samples from 17 carnivores and 34 herbivores revealed patent infections in only 6 herbivore species (5 artiodactyls of the families bovidae and giraffidae and 1 perissodactyl of the family rhinocerotidae); all carnivores were negative. intensity of infection was found to be generally low. connochaetes taurinus tauri ...19969024881
assessment of the food habits of the moroccan dorcas gazelle in m'sabih talaa, west central morocco, using the trnl habits of the moroccan dorcas gazelle, gazella dorcas massaesyla, previously investigated in the 1980s using microhistological fecal analysis, in the m'sabih talaa reserve, west central morocco, were re-evaluated over three seasons (spring, summer and autumn 2009) using the trnl approach to determine the diet composition and its seasonal variation from fecal samples. taxonomic identification was carried out using the identification originating from the database built from embl and the list ...201222558187
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