Publications

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comparison of growth characteristics of anaerobic fungi isolated from ruminant and non-ruminant herbivores during cultivation in a defined medium.anaerobic fungi were isolated from rumen fluid of a domestic sheep (ovis aries; a ruminant) and from faeces of five non-ruminants: african elephant (loxodonta africana), black rhinoceros (diceros bicornis), indian rhinoceros (rhinoceros unicornis), indian elephant (elephas maximus) and mara (dolichotis patagonum). the anaerobic fungus isolated from the sheep was a neocallimastix species and the isolates from non-ruminants were all species similar to piromyces spp. a defined medium is described w ...19911919514
social structure of the mara (dolichotis patagonum) as a determinant of gastro-intestinal parasitism.a one-year study of gastro-intestinal parasitism in a free-ranging population of maras at whipsnade wild animal park, uk, revealed a strong relationship between membership of social units and both intensity and prevalence of infection. the mara, a hystricomorph rodent from southern argentina, has a social organization including both monogamy and communal denning of the young, an apparently unique combination among mammals. from october 1992 to september 1993, strongyloid parasite loads were esti ...19989550220
disseminated histoplasma capsulatum var capsulatum infection in a captive mara (dolichotis patagonum). 200415508846
second case of histoplasmosis in a captive mara (dolichotis patagonum): pathological findings.a second case of histoplasmosis in a captive mara (dolichotis patagonum) from a colony at the wildlife park africam safari, puebla, mexico, is described, and the mara died with disseminated clinical form of the disease, affecting mostly the large intestine and adrenal. the pathological findings of this case 2 revealed severe granulomatous typhlocolitis and moderate granulomatous gastrohepatic lymphadenitis with numerous yeast-like cells, 2-4 mum in diameter, with a clear halo surrounding them in ...200919360479
identification of the source of histoplasmosis infection in two captive maras (dolichotis patagonum) from the same colony by using molecular and immunologic assays.histoplasma capsulatum was isolated from the spleen of a first infected mara (dolichotis patagonum) and from a second mara's liver and adrenal gland, both in the same colony at the africam safari, puebla, mexico. studies of h. capsulatum isolates, using nested-pcr of a 100-kda protein coding gene (hcp100) fragment and a two-primer rapd-pcr method, suggest that these isolates were spreading in the environment of the maras' enclosure. by using a dot-elisa method, sera from mice inoculated with thr ...200919623900
direct analysis of α- and β-chains of hemoglobins from mammalian blood samples by nanoesi mass spectrometry during in-capillary proteolytic digestion.α- and β-chains of hemoglobins derived from several species were analyzed directly from diluted blood samples by simultaneous in-capillary proteolytic digestion and nanoesi ms and ms/ms analysis. starting from fresh or frozen and thawed blood samples, sequence coverages of >80% were usually obtained. only 2 h after resuspension of a dried blood spot, human origin could be demonstrated from data obtained by in-capillary tryptic digestion, nanoesi mass spectrometric analysis, and data base search. ...201020602125
direct detection and differentiation of pathogenic leptospira species using a multi-gene targeted real time pcr approach.leptospirosis is a growing public and veterinary health concern caused by pathogenic species of leptospira. rapid and reliable laboratory tests for the direct detection of leptospiral infections in animals are in high demand not only to improve diagnosis but also for understanding the epidemiology of the disease. in this work we describe a novel and simple taqman-based multi-gene targeted real-time pcr approach able to detect and differentiate leptospira interrogans, l. kirschneri, l. borgpetere ...201425398140
management of protected areas and its effect on an ecosystem function: removal of prosopis flexuosa seeds by mammals in argentinian drylands.the ecological function of animal seed dispersal depends on species interactions and can be affected by drivers such as the management interventions applied to protected areas. this study was conducted in two protected areas in the monte desert: a fenced reserve with grazing exclusion and absence of large native mammals (the man and biosphere ñacuñán reserve; fr) and an unfenced reserve with low densities of large native and domestic animals (ischigualasto park; ufr). the study focuses on prosop ...201627655222
mrsa carrying mecc in captive mara.to characterize the staphylococcal cassette chromosome mec (sccmec), virulence and antimicrobial susceptibility of staphylococcus aureus st130 isolated from mara (dolichotis patagonum), a large rodent species native to south america and kept in captivity at copenhagen zoo.201525722301
infection with toxoplasma gondii in a red kangaroo (macropus rufus) and a patagonian mara (dolichotis patagonum) in captivity.toxoplasmosis is an infectious, zoonotic and parasitic disease, caused by toxoplasma gondii. in this manucript, two cases of infection with t. gondii in captive animals from a zoological park in the central region of chile are described. one case was a red kangaroo (macropus rufus), which is highly susceptible to the infection, and the other was a patagonian mara (dolichotis patagonum), a rodent in which there is no previous report of the infection. both animals had myocarditis, with the presenc ...201627982295
myology of dolichotis patagonica and dasyprocta isthmica. 189717232253
oxalate toxicity in a scaly-tailed possum, a patagonian cavy and a swamp wallaby. 19836644930
recurrent ear mite (otodectes cynotis) infestation in three related groups of patagonian cavies (dolichotis patagonum).:  two of three groups of patagonian cavies ( dolichotis patagonum ) contracted otodectes cynotis infestations after exposure to mite-infested feral cats. otodectes cynotis infestations were initially identified in 9 of 10 cavies in group 1. multiple feral cats with o. cynotis infestations were observed in the vicinity of the patagonian cavies and were subsequently removed. the patagonian cavies were initially treated with ivermectin (0.4 mg/kg s.q.) every 2 wk, but ivermectin was discontinued a ...201728749307
[anatomic-topographic description of the stomach, small intestine, large intestine and their arteries of the greater mara (dolichotis patagonum desmarest 1820)].the abdominal parts of the alimentary canal and the associated arteries from seven male and nine female maras are described. the mara possesses a stomach with a single cavity and a glandular mucosa lining. the large stomach is situated caudal of the liver at right-angles to the longitudinal body axis. the long jejunum is located on the left side of the body caudal of the stomach. the cecum has two teniae and numerous haustra which are proximal larger than distal. the smooth colon ascendens runs ...200010932385
pulmonary arterial disease associated with right-sided cardiac hypertrophy and congestive heart failure in zoo mammals housed at 2,100 m above sea level.subacute and chronic mountain sickness of humans and the related brisket disease of cattle are characterized by right-sided congestive heart failure in individuals living at high altitudes as a result of sustained hypoxic pulmonary hypertension. adaptations to high altitude and disease resistance vary among species, breeds, and individuals. the authors conducted a retrospective survey of right-sided cardiac hypertrophy associated with pulmonary arterial hypertrophy or arteriosclerosis in zoo mam ...201526667539
use of a hybrid external skeletal fixator for repair of a periarticular tibial fracture in a patagonian cavy.an 8-week-old female patagonian cavy was examined because of acute right hind limb lameness; radiography revealed a moderately displaced, comminuted fracture of the proximal third of the tibia. the fracture was stabilized with a hybrid external skeletal fixator. two kirschner wires were placed in the main proximal fragment, parallel to the tibial plateau and at right angles to each other. these wires were connected to a partial circular external fixator ring. three half pins were placed in the d ...200415112778
[social behaviour of a colony of maras (dolichotis patagonum z.) in the branféré park]. 19744450820
pulmonary besnoitiasis in captive maras (dolichotis patagonum) associated with interstitial pneumonia.six captive maras (dolichotis patagonum) were found to have cysts consistent with besnoitia in the lungs by light microscopy and electron microscopy. three were juveniles that died with no premonitory signs during a 17-month period. the most prominent finding consisted of severe, subacute, diffuse interstitial pneumonia with syncytia and besnoitia cysts. the severity of pneumonia correlated with the number of cysts and the presence of lytic cysts, often surrounded by chronic granulomatous inflam ...200415232142
pathological findings in a captive colony of maras (dolichotis patagonum).this paper describes the causes of death of 54 maras (dolichotis patagonum) in a captive colony in mexico over a period of seven years. there were 35 adults, 11 juveniles, five neonates, two fetuses and one stillbirth--27 males, 21 females and six whose sex was not determined. trauma was the cause of 25 deaths, and there were eight cases of fatal bacterial infection. besnoitiosis was the only parasitic disease found frequently (13 cases), and was associated with fatal interstitial pneumonia in t ...200616731703
fatal anemia and dermatitis in captive agoutis (dasyprocta mexicana) infested with echidnophaga fleas.two captive agoutis (dasyprocta mexicana) died of anemia with centrilobular hepatocellular necrosis (2/2), severe flea ectoparasitism (2/2), and cardiomegaly attributed to anemia (1/2). other agoutis were similarly parasitized and one had anemia. fleas were manually removed and all agoutis treated topically with propoxur and selamectin and moved to another enclosure. no additional cases of fatal anemia were seen. cutaneous lesions suggestive of hypersensitivity were observed in three additional ...200818556127
behavior, nutrition, and veterinary care of patagonian cavies (dolichotis patagonum).patagonian cavies (dolichotis patagonum) are large south american rodents well adapted for cursorial life (well adapted for running). they are monogamous but can live in groups of up to 70 individuals who maintain communal burrows. they are primarily herbivorous and may be maintained on commercially produced rodent or primate diets. their long, thin legs and skittish nature make them difficult to restrain. common medical problems include malocclusion of cheek teeth, gastrointestinal parasites, h ...200919341953
morphology of the lingual papillae in the patagonian cavy.we examined the dorsal lingual surfaces of an adult patagonian cavy (dolichotis patagonum) by scanning electron microscopy. the tongue of the patagonian cavy is about 8 cm long and the lingual body had lingual prominence on the posterior third. there were no fungiform papillae in the lingual dorsal surface. the fungiform papillae were observed in both lateral sides of the lingual apex. the filiform papilla of the lingual body consisted of a large conical papilla. the connective tissue core of th ...201122519071
persistent giardia spp. and trichuris spp. infection in maras (dolichotis patagonum) at a zoo in greece.the mara (dolichotis patagonum) is a species classified as "near threatened" by the international union for conservation of nature. in the wild, it inhabits only argentina, but it is also kept in zoos around the world. in order to investigate the endoparasites of the maras kept in the attica zoological park, greece, four fecal examinations were performed in a period of 4 yr (2008-2011) by standard parasitologic methods. cysts of the protozoan parasite giardia spp. and eggs of the nematode trichu ...201323805557
sources of variation in a two-step monitoring protocol for species clustered in conspicuous points: dolichotis patagonum as a case study.in species showing distributions attached to particular features of the landscape or conspicuous signs, counts are commonly made by making focal observations where animals concentrate. however, to obtain density estimates for a given area, independent searching for signs and occupancy rates of suitable sites is needed. in both cases, it is important to estimate detection probability and other possible sources of variation to avoid confounding effects on measurements of abundance variation. our o ...201526011026
fatal salmonellosis in captive maras (dolichotis patagonum) caused by salmonella enteritidis.we report epidemic occurrences of fatal salmonellosis caused by salmonella enteritidis in captive maras (dolichotis patagonum) in a zoological garden in japan. the deaths were sudden or followed a peracute course within a few hours of the first observations of clinical abnormalities. gross lesions included haemorrhages in the subcutis and skeletal muscles, liver, spleen, lung, heart and gastrointestinal tract. microscopically, there were haemorrhagic and necrotizing lesions with gram-negative ba ...201728238470
cowpoxvirus infection in the patagonian cavy (dolichotis patagonum) emerging disease in an educational animal park the first reported case.generalized cowpox infection in the patagonian cavy may represent a threat to the health of immunocompromised persons. we report the first case of cowpoxvirus infection in the patagonian cavy in an educational animal park. the mara developed extensive pox lesions, shedding large amounts of viral particles. the ending of vaccination programmes against smallpox in the late 1970's may lead to an increase in susceptibility of humans to zoonotic poxviruses.200616841565
digesta retention and fibre digestion in maras (dolichotis patagonum) and guinea-pigs.1. digestibilities of feed and turnover time (1/k), transit time (tt) and mean retention time (mrt: 1/k+tt) of fluid and particle markers were measured in maras (dolichotis patagonum) and guinea-pigs (cavia procellus) fed a diet containing 50% alfalfa. 2. the digestibility of fibre was similar in both animals, however, the digestibilities of crude protein (nitrogen x 6.25) and crude ash were lower in the mara than in the guinea-pig. 3. 1/k of the digesta markers were similar in both animals, sug ...19921351463
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