RESUMEN
The purpose of this study is to report the first case of parasitism by the giant kidney worm, Dioctophyme renale (Goeze, 1782), in the crab-eating fox, Cerdocyon thous (Linnaeus, 1766), in Brazil. A debilitated adult male fox was taken to the Screening Center for Wild Animals in Rio de Janero (CETAS/RJ) and eventually died of an unknown cause. During necropsy, a brownish-red nematode, 28.9 cm long, was found in the peritoneal cavity. The worm was identified as a male D. renale. This study reports the first case of dioctophymatosis in the crab-eating fox, enlarging the range of wild definitive host species infected by the giant kidney worm in the Neotropical region.
Asunto(s)
Dioctophymatoidea/aislamiento & purificación , Infecciones por Enoplida/veterinaria , Zorros , Animales , Animales Salvajes/parasitología , Brasil/epidemiología , Infecciones por Enoplida/diagnóstico , Infecciones por Enoplida/epidemiología , Resultado Fatal , Zorros/parasitología , MasculinoRESUMEN
Three isosporan species are described from the double-collared seedeater, Sporophila caerulescens from Eastern Brazil. Isospora sporophilae n. sp. oocysts spherical to subspherical; oocyst wall bi-layered, smooth, inner layer colorless to pale yellowish, 21.6 x 20.9 (19.20-23.20 x 18.40-22.60) microm, shape-index 1.03 +/- 0.02 (1-1.10), with no micropyle or oocyst residuum. Polar bodies splinter-like or comma-like. Sporocysts ovoidal, 15.2 x 10.6 (17.40-12.80 x 12.60-8.40) microm, shape-index 1.43 +/- 0.14 (1.17-1.81), with knob-like Stieda body and residuum. Large crystalloid body in the center of the sporocyst. Isospora flausinoi n. sp. oocysts spherical to subspherical, oocyst wall bi-layered, smooth, colorless, 17.30 x 16.53 (14-20 x 13.60-20) microm, shape-index 1.05 +/- 0.04 (1-1.21). Micropyle and oocyst residuum absent; presence of a large polar body. Sporocystpiriform, 14.88 x 10.70 (11.80-18 x 8-12.40) microm, shape-index 1.40 +/- 0.18 (1.07-1.77), with smooth, thin, single-layered wall. Sporocyst with rounded Stieda body with no substieda body, and residuum composed of granular material. Isospora teixeirafilhoi n. sp. oocysts spherical to subspherical, oocyst wall bi-layered, smooth, colorless, 17.41 x 16.81 (15.60 - 19.40 x 14.20-18.80) microm. Shape-index 1.04 +/- 0.08 (1-1.12). Micropyle and oocyst residuum absent; presence of a small double-lobuled polar body. Sporocyst ovoid, 11.74 x 8.12 (9-14.20 x 6.20-9.40) microm. Shape-index 1.46 +/- 0.23 (1.06-1.88). Sporocyst with knob-like Stieda body, no sub-Stieda body and residuum composed of granular material.
Asunto(s)
Isospora/clasificación , Passeriformes/parasitología , Animales , Brasil , Isospora/aislamiento & purificación , Oocistos/aislamiento & purificaciónRESUMEN
Physiological parameters of laboratory animals used for biomedical research is crucial for following several experimental procedures. With the intent to establish baseline biologic parameters for non-human primates held in closed colonies, hematological and morphometric data of captive monkeys were determined. Data of clinically healthy rhesus macaques (Macaca mulatta), cynomolgus monkeys (Macaca fascicularis), and squirrel monkeys (Saimiri sciureus) were collected over a period of five years. Animals were separated according to sex and divided into five age groups. Hematological data were compared with those in the literature by Student's t test. Discrepancies with significance levels of 0.1, 1 or 5% were found in the hematological studies. Growth curves showed that the sexual dimorphism of rhesus monkeys appeared at an age of four years. In earlier ages, the differences between sexes could not be distinguished (p < 0.05). Sexual dimorphism in both squirrel monkeys and cynomolgus monkeys occurred at an age of about 32 months. Data presented in this paper could be useful for comparative studies using primates under similar conditions.
Asunto(s)
Macaca fascicularis/anatomía & histología , Macaca mulatta/anatomía & histología , Saimiri/anatomía & histología , Caracteres Sexuales , Factores de Edad , Animales , Biometría , Femenino , Macaca fascicularis/sangre , Macaca fascicularis/crecimiento & desarrollo , Macaca mulatta/sangre , Macaca mulatta/crecimiento & desarrollo , Masculino , Saimiri/sangre , Saimiri/crecimiento & desarrolloRESUMEN
Por meio de revisão da literatura pertinente foram coligidos e são apresentados os principais dados relativos aos aspectos epidemiológicos, clínicos, anátomo e histopatológicos observados na infecção por Circovírus Porcino tipo 2 (PCV-2) em suínos. São abordados a Síndrome Definhante Multissistêmica dos Suínos Desmamados (SDMDS), o Tremor Congênito Suíno (TCS), a Síndrome da Nefropatia e Dermatite Porcina (SNDP), bem como outras enfermidades associadas ou correlatas, a Síndrome Respiratória e Reprodutiva Porcina (SRRP), a Pneumonia Necrotizante Proliferativa (PNP) e as falhas reprodutivas. Uma vez que a SDMSD já foi registrada na Região Sul do Brasil e no Estado do Rio de Janeiro esse estudo objetiva chamar a atenção para o especial significado dessa virose para a suinocultura brasileira, em função dos prejuízos econômicos por ela determinados.
The literature of Porcine Circovirosis, including the main data on epidemiology and clinical, macroscopic and microscopic alterations of the infection of swine by Porcine Circovirus type 2 (PCV-2), is reviewed. There are various forms of infection: the [Porcine] Postweaning Multisystemic Wasting Syndrome (PMWS), Porcine Congenital Tremor, Porcine Dermatitis and Nephropathy Syndrome, and other associated or correlated diseases as the Porcine Reproductive and Respiratory Syndrome, Proliferative Necrotizing Pneumonia, and reproductive disorders. As PMWS already has been reported from southern Brazil and from the state of Rio de Janeiro, the objective of this review is to draw attention to the implications of this virosis for swine production in Brazil and its economical importance.
Asunto(s)
Animales , Bronquiolitis Obliterante/veterinaria , Circovirus/clasificación , Circovirus/aislamiento & purificación , Infecciones por CircoviridaeRESUMEN
Por meio de revisão da literatura pertinente foram coligidos e são apresentados os principais dados relativos aos aspectos epidemiológicos, clínicos, anátomo e histopatológicos observados na infecção por Circovírus Porcino tipo 2 (PCV-2) em suínos. São abordados a Síndrome Definhante Multissistêmica dos Suínos Desmamados (SDMDS), o Tremor Congênito Suíno (TCS), a Síndrome da Nefropatia e Dermatite Porcina (SNDP), bem como outras enfermidades associadas ou correlatas, a Síndrome Respiratória e Reprodutiva Porcina (SRRP), a Pneumonia Necrotizante Proliferativa (PNP) e as falhas reprodutivas. Uma vez que a SDMSD já foi registrada na Região Sul do Brasil e no Estado do Rio de Janeiro esse estudo objetiva chamar a atenção para o especial significado dessa virose para a suinocultura brasileira, em função dos prejuízos econômicos por ela determinados.
Asunto(s)
Bronquiolitis Obliterante/veterinaria , Infecciones por Circoviridae , Circovirus/clasificación , Circovirus/aislamiento & purificaciónRESUMEN
Three isosporan species are described from the double-collared seedeater, Sporophila caerulescens from Eastern Brazil. Isospora sporophilae n. sp. oocysts spherical to subspherical; oocyst wall bi-layered, smooth, inner layer colorless to pale yellowish, 21.6 Î 20.9 (19.20-23.20 Î 18.40-22.60) æm, shape-index 1.03 ± 0.02 (1-1.10), with no micropyle or oocyst residuum. Polar bodies splinter-like or comma-like. Sporocysts ovoidal, 15.2 Î 10.6 (17.40-12.80 Î 12.60-8.40) æm, shape-index 1.43 ± 0.14 (1.17-1.81), with knob-like Stieda body and residuum. Large crystalloid body in the center of the sporocyst. Isospora flausinoi n. sp. oocysts spherical to subspherical, oocyst wall bi-layered, smooth, colorless, 17.30 x 16.53 (14-20 Î 13.60-20) æm, shape-index 1.05 ± 0.04 (1-1.21). Micropyle and oocyst residuum absent; presence of a large polar body. Sporocyst piriform, 14.88 x 10.70 (11.80-18 Î 8-12.40) æm, shape-index 1.40 ± 0.18 (1.07-1.77), with smooth, thin, single-layered wall. Sporocyst with rounded Stieda body with no substieda body, and residuum composed of granular material. Isospora teixeirafilhoi n. sp. oocysts spherical to subspherical, oocyst wall bi-layered, smooth, colorless, 17.41 x 16.81 (15.60 19.40 Î 14.20-18.80) æm. Shape-index 1.04 ± 0.08 (1-1.12). Micropyle and oocyst residuum absent; presence of a small double-lobuled polar body. Sporocyst ovoid, 11.74 Î 8.12 (9-14.20 Î 6.20-9.40) æm. Shape-index 1.46 ± 0.23 (1.06-1.88). Sporocyst with knob-like Stieda body, no sub-Stieda body and residuum composed of granular material.
Asunto(s)
Animales , Isospora/clasificación , Passeriformes/parasitología , Brasil , Isospora/aislamiento & purificación , Oocistos/aislamiento & purificaciónRESUMEN
Physiological parameters of laboratory animals used for biomedical research is crucial for following several experimental procedures. With the intent to establish baseline biologic parameters for non-human primates held in closed colonies, hematological and morphometric data of captive monkeys were determined. Data of clinically healthy rhesus macaques (Macaca mulatta), cynomolgus monkeys (Macaca fascicularis), and squirrel monkeys (Saimiri sciureus) were collected over a period of five years. Animals were separated according to sex and divided into five age groups. Hematological data were compared with those in the literature by Student's t test. Discrepancies with significance levels of 0.1, 1 or 5 percent were found in the hematological studies. Growth curves showed that the sexual dimorphism of rhesus monkeys appeared at an age of four years. In earlier ages, the differences between sexes could not be distinguished (p < 0.05). Sexual dimorphism in both squirrel monkeys and cynomolgus monkeys occurred at an age of about 32 months. Data presented in this paper could be useful for comparative studies using primates under similar conditions.
Asunto(s)
Animales , Masculino , Femenino , Macaca fascicularis , Macaca mulatta , Saimiri , Caracteres Sexuales , BiometríaRESUMEN
The objective of this study was to identify intestinal protozoa in fecal samples of illegally commercialized New World nonhuman primates apprehended by governmental authorities and sent to a Wildlife Screening Center in the municipality of Seropédica, State of Rio de Janeiro, under the administration of Instituto Brasileiro de Meio Ambiente e Recursos Naturais. Feces from marmosets (crossbreeding among Callithrix jacchus and C. penicillata) and brown howler monkeys (Alouatta fusca) were collected and submitted to Richties formaldehyde-ether sedimentation technique. Smears were made with the sediment and submitted to safranin-methylene blue and Wheatleys modified trichrome stainings. Phenol-auramine staining was used in order to compare positive smears for Cryptosporidiumoocysts stained with safranin-methylene blue technique. Three (100%)fecal samples of brown howler monkeys and eight of common marmosets (88.9%) were positive for Cryptosporidium oocysts.Blastocystis hominis-like forms were observed in all samples of brownhowler monkeys and in 66.7% (6/9) of marmosets. New World nonhuman primates Callithrix crossbreed species and A. fusca can harbor forms similarly identified as potential zoonotic organisms.The strict contact between monkeys and humans can represent risks for both by mutual transmission of pathogens. It is unknown if monkey species studied in the present work are either infected with these parasites in natural environment or acquire it when submitted to human contact. Stressing is also a factor that deserves attention on animals submitted to capture, apprehension and transport to Wildlife Screening Centers.
O objetivo deste estudo foi identificar protozoários intestinais em amostras fecais de primatas neotropicais não-humanos, comercializados ilegalmente, apreendidos por autoridades governamentais, e enviados para um centro de triagem de animais silvestres no município de Seropédica, Estado do Rio de Janeiro, sob a administração do Instituto Brasileiro de Meio Ambiente e Recursos Naturais. Fezes de micos-saguí (cruzamento entre Callithrix jacchus e C. penicillata) e bugios marrons (Alouatta fusca) foram coletados e submetidos à técnica de centrifugo-sedimentação de Ritchie. Esfregaços foram confeccionados com o sedimento e submetidos à coloração pelas técnicas da safranina-azul de metileno e Tricrômio modificada de Wheatley. Três (100%) amostras fecais de bugios marrons e oito (88,9%) de micos-saguí foram positivos para oocistos de Cryptosporidium. Formas de Blastocystis homonis-simile foram observadas em todas as amostras de bugios marrons e em 66,7% (6/9) de micos-saguí. Primatas neotropicais não-humanos como os micos-saguí originados do cruzamento de espécies de Callithrix e a espécie A. fusca podem abrigar formas similarmente identificadas como organismos com potencial zoonótico. O contato estrito entre macacos e humano pode representar riscos para ambos por transmissão mútua de patógenos. Não está esclarecida se as espécies de macacos estudadas no presente trabalho são também infectadas com estes parasitos em ambiente natural ou adquirem estes quando submetidos ao contato humano. Estresse é também um fator que merece atenção para os animais submetidos à captura, apreensão e transporte para o centro de triagem de animais silvestres.