Publications

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ticks on captive and free-living wild animals in northeastern brazil.from 2005 to 2009, 147 ticks found on 32 wild animals from or referred to two zoobotanical parks (parque zoobotânico arruda câmara and parque estadual dois irmãos) located in northeastern brazil were identified. ticks found on two veterinarians working in one of the parks (i.e., parque estadual dois irmãos), after return from forested areas within the park's territory, were also identified. the following tick-host associations were recorded: amblyomma fuscum neumann on boa constrictor l.; amblyo ...201019693679
a minimally invasive method for gender determination in the prehensile-tailed porcupine (coendou prehensilis).prehensile-tailed porcupines (coendou prehensilis), like other rodents, lack external sexual traits, making it difficult to non-invasively determine their gender. by exploiting genetic differences between the x and the y chromosome, we developed a simple genetic test to determine the gender of coendous from shed quills. we sanger sequenced a short portion (195 bp) of the zinc finger protein gene of known male (xy) coendous to identify positions that are polymorphic between the x and y chromosome ...201323447467
blastocystis sp. and blastocystis ratti in a brazilian porcupine (coendou prehensilis) with diarrhea.a hand-raised, 5-mo-old, intact male brazilian porcupine (coendou prehensilis) was evaluated for chronic diarrhea, failure to thrive, and anorexia. on presentation the porcupette was dull, dehydrated, and passing yellow, malodourous, watery diarrhea. cytologic examination of feces revealed a large number of organisms, morphologically consistent with blastocystis. blastocystis polymerase chain reaction (pcr) performed on feces was positive. direct sequencing on two sequential samples confirmed th ...201627468042
molecular evidence for a spotted fever group rickettsia species in the tick amblyomma longirostre in brazil.two amblyomma longirostre adult male ticks were collected from a brazilian porcupine coendou prehensilis l. in the state of rondonia, western amazon, brazil. the two ticks were pooled for dna extraction and tested for the presence of rickettsial dna by amplifying portions of the glta, 17-kda, ompa, and ompb rickettsial genes by polymerase chain reaction (pcr). portions of the four genes were amplified from the sample and subsequently sequenced. these results indicated the presence of a rickettsi ...200415185961
a survey of hemoparasite infections in free-ranging mammals and reptiles in french guiana.blood smears of 1,353 free-ranging mammals (35 species) and 112 reptiles (31 species) from french guiana were examined for hemoparasites. parasites from 3 major groups were recorded: apicomplexa (including hemogregarines, piroplasms, and plasmodium spp.), trypanosomatidae, and filaroidea. fifty percent of the individuals (86% of the species) were infected by parasites from at least 1 group. hemogregarines, identified as hepatozoon sp., infected numerous snakes with high prevalences (30-100%); in ...200011128476
some methods for the enzymic characterization of latin-american leishmania with particular reference to leishmania mexicana amazonensis and subspecies of leishmania hertigi.30 brazilian stocks of leishmania mexicana amazonensis and 13 stocks of subspecies of leishmania hertigi were characterized by starch-gel electrophoresis, using 18 enzymes selected from a total of 36 investigated. l. m. amazonensis was separable from subspecies of l. hertigi by enzymic profiles of 11 enzymes. the l. m. amazonensis stocks, which were from a wide range of hosts in a large geographical area, were enzymically extremely homogeneous, and could only be subdivided on two enzymes; sub-gr ...19807385303
hematologic and serum biochemistry values in two species of free-ranging porcupines (coendou prehensilis, coendou melanurus) in french guiana.individuals of two porcupine species (coendou prehensilis and coendou melanurus) were translocated during the flooding of a forest at a hydroelectric dam site in french guiana. blood samples were collected for 11 mo to determine hematologic and serum chemistry reference mean values and ranges and to look for blood parasites. male c. prehensilis had significantly higher hemoglobin levels, packed cell volumes, and creatinine and potassium values than did females of the same species. coendou prehen ...200312885133
leishmaniasis in bolivia. vii. infection of sentinel porcupines (coendou prehensilis, l.) by leishmania (le.) chagasi. 19892487453
metastatic malignant melanoma in a prehensile-tailed porcupine (coendou prehensilis).a 14-yr-old male, prehensile-tailed porcupine (coendou prehensilis) presented for an ulcerated, bleeding lesion of the right flank. the wound presented similar to a bite wound and was treated with antibiotics. after 2 mo, the lesion had increased in size and was nonhealing, so surgical excision was elected. histopathology diagnosed this lesion as a malignant melanoma with incomplete margins. radiographs showed no evidence of pulmonary metastasis. at 6 mo, another skin lesion was removed and was ...201122946381
disseminated t-cell lymphoma in a brazilian porcupine (coendou prehensilis).the current study describes the clinical, gross, histopathologic, and immunohistochemical findings of a t-cell lymphoma in a captive porcupine (coendou prehensilis), a species typically seen in the tropical forests of brazil. at necropsy, extensive neoplastic involvement was observed in the cervical lymph nodes, with extension into the salivary gland. the spleen was mildly enlarged, and neoplastic nodules were grossly evident in the liver and right kidney. histologically, sheets of large and mar ...201121217044
gastrolithiasis in prehensile-tailed porcupines (coendou prehensilis): nine cases and pathogenesis of stone formation.gastrolithiasis was diagnosed in nine prehensile-tailed (pt) porcupines (coendou prehensilis) housed at six zoologic institutions in the united states and canada. affected animals were either asymptomatic or had clinical signs, including weight loss, diarrhea, and depression. abdominal palpation was adequate for diagnosis in all six antemortem cases, and radiographs confirmed a soft tissue density mass effect produced by the concretion. these gastroliths were all successfully surgically removed. ...201425632677
otitis media in the trinidad tree porcupine (coendou prehensilis). 19705465297
azole-resistant candida albicans from a wild brazilian porcupine (coendou prehensilis): a sign of an environmental imbalance?this study aimed at evaluating the in vitro antifungal susceptibility of candida albicans isolates obtained during necropsy of a wild brazilian porcupine and the mechanism of azole resistance. initially, we investigated the in vitro susceptibility of the three isolates to amphotericin b, caspofungin, fluconazole, itraconazole, ketoconazole and voriconazole. afterwards, three sub-inhibitory concentrations (47, 21 and 12 mg/l) of promethazine, an efflux pump inhibitor, were tested in combination w ...201323286353
vertebrates as a bactericidal agent.in brazil, although a large number of animals are used in traditional medicine (at least 354 species), information about their biological activities is scarce. in this context, the objective of this study was to evaluate the bactericidal potential of zootherapeutic by-products from animals used in brazilian traditional medicine and discuss the ecological and cultural consequences of such practices. the species analyzed were: tupinambis merianae (skin), iguana iguana (skin and body fat), crotalus ...201829922961
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