RESUMEN El nefroma mesoblástico congénito (NMC), es el tumor renal más frecuente en recién nacidos e infantes menores de 3 meses. Se presenta el caso clínico de una paciente menor de 3 meses, con diagnóstico prenatal, referido de manera oportuna para evaluación y manejo la Institución. El NMC es un tumor de baja incidencia. El diagnóstico precoz así como la excéresis completa del tumor son predictores de buen pronóstico, como en el caso de nuestra paciente.

ABSTRACT Congenital mesoblastic nephroma (CMN) is the most frequent renal tumor in newborns and infants. under 3 months. The clinical case of a patient younger than 3 months, with prenatal diagnosis, referred in a timely manner for evaluation and management by the Institution is presented. CMN is a low incidence tumor. Early diagnosis as well as complete excision of the tumor are predictors of good prognosis, as in the case of our patient.

ABSTRACT The aim of this study was to identify bacterial agents isolated from fatal cases in guinea pigs as well as to evaluate their antibiotic susceptibility from two commercialfamily breeding centres in the province of Canchis, Cusco-Peru. In total, 230 animals (130 with respiratory lesions and 100 with enterohepatic lesions) were processed, including samples of the liver, lung, spleen and intestine. A microbiological culture and antibiogram were performed on agar with discs of the main antibiotics used in guinea pigs rearing. In the respiratory lesions, Streptococcus sp (47.1%), Bordetella sp (26.4%), Salmonella sp (13.8%), Klebsiella sp (9.2%) and Pasteurella sp (3.4%) were identified. Likewise, in guinea pigs with enteric lesions, Salmonella sp (56.8%), E. coli (29.7%), Citrobacter sp (7.6%) and Klebsiella sp (5.9%) were identified. The highest frequency of bi-bacterial isolates in respiratory lesions was for Streptococcus sp and Bordetella sp, while for liver-enteric lesions it was Salmonella sp and E. coli was registered. The general frequency of resistance in the isolates was 5.4 and 3.6% for enrofloxacin and trimethoprimsulfamethoxazole, respectively. The results showed a variety of bacterial genera present in respiratory and enteric-hepatic processes in guinea pigs, as well as a low frequency of antibiotic resistance in the isolated strains.

RESUMEN El objetivo del presente estudio fue identificar los agentes bacterianos aislados y evaluar su susceptibilidad antibiótica a partir de casos de mortalidad en cuyes procedentes de dos centros de crianza familiar-comercial de la provincia de Canchis, Cusco. Se procesaron 230 animales (130 con lesiones respiratorias y 100 con lesiones enterohepáticas), tomándose muestras de hígado, pulmón, bazo e intestino. Se realizó un cultivo microbiológico y antibiograma en agar con discos de los principales antibióticos usados en sistemas de crianza de cuyes. A nivel de lesiones respiratorias se identificó a Streptococcus sp (47.1%), Bordetella sp (26.4%), Salmonella sp (13.8%), Klebsiella sp (9.2%) y Pasteurella sp (3.4%). Asimismo, en cuyes con lesiones entéricas se identificó a Salmonella sp (56.8%), E. coli (29.7%), Citrobacter sp (7.6%) y Klebsiella sp (5.9%). La mayor frecuencia de aislados bibacterianos en cuadros respiratorios fue para Streptococcus sp y Bordetella sp, en tanto que para lesiones hepático-entéricas fue Salmonella sp y E. coli. La frecuencia general de resistencia en las cepas aisladas fue de 5.4 y 3.6% para enrofloxacina y trimetoprima-sulfametoxazol, respectivamente. Los resultados evidencian la variedad de géneros bacterianos presentes en procesos respiratorios y entérico-hepáticos en cuyes, así como una frecuencia baja de resistencia antibiótica en las cepas aisladas.

Resumo As sementes de Plukenetia polyadenia têm altos níveis de ácidos graxos insaturados e são utilizadas como medicamentos e alimentos para as pessoas nativas da Amazônia Peruana e Brasileira. O objetivo do trabalho foi desenvolver um método de propagação vegetativa de Plukenetia polyadenia por meio do enraizamento de estacas em câmeras de sub-irrigação. Foi utilizado um delineamento de blocos ao acaso com 12 tratamentos e 3 repetições de 8 estacas, e esquema fatorial 3 × 4. Os fatores foram: 3 níveis de área foliar (25, 50 e 75%) e 3 doses de ácido indol-3-butírico - AIB (9,84; 19,68 e 29,52mM) e um controle sem AIB. Os dados foram submetidos à análise de variância e as médias foram comparadas pelo teste de Tukey a 5% de probabilidade. A maior taxa de enraizamento de estacas (93%) foi obtida com 29,52mM de AIB como indutor hormonal e estacas com área foliar de 50%. A propagação vegetativa de Plukenetia polyadenia por estacas será usada como ferramenta para conservar e propagar germoplasma em programas de melhoramento.

Abstract The seeds of Plukenetia polyadenia have high levels of unsaturated fatty acids and are used as medicine and food for native people in the Peruvian and Brazilian Amazon. The objective of this study was to develop a method for vegetative propagation of Plukenetia polyadenia by rooting of cuttings. The experiment was laid out in a randomized complete block design with 12 treatments and 3 replications of 8 cuttings, in a 3 × 4 factorial arrangement. The factors were: 3 levels of leaf area (25, 50 and 75%) and 3 indole-3-butyric acid - IBA concentrations (9.84, 19.68 and 29.52mM) and a control without IBA. Data were submitted to analysis of variance and means were compared by Tukey test at 5% probability. Our results show that the use of cuttings with 50% of leaf area and treatment with 29.52mM of IBA induced high percentages of rooting (93%) and the best root formation. Vegetative propagation of Plukenetia polyadenia by cuttings will be used as a tool to conserve and propagate germplasm in breeding programs.

This report contains information about sleeping dens, population structure and the impact of hunting of the paca (Cuniculus paca Linnaeus, 1766). It is based in sleeping den observations, transect censuses and hunting records. We found that each sleeping den has one to three orifices for regular access and way out, one to four orifices for circumstantial escape, and an internal cavity for the diurnal sleep. Of the total sleeping dens inspected, 67% where located between 0 and 60 m from water bodies, but some were also found as far as 100 m away. Of the population extracted by hunters, 74% were adults and only 4% were infants. The annual hunting pressure was estimated at 0,4 individuals/ km² and the population density for the overall area at 6,2 individuals/km². Finally, the harvest model suggests that hunting of the paca is sustainable in Alto Itaya river basin.

Este reporte contiene información acerca de los ambientes de dormir, estructura poblacional y el impacto de la caza del majas (Cuniculus paca Linnaeus, 1766). Está basado en observaciones de madrigueras, censos por transectos y registros de caza. Encontramos que cada ambiente de dormir tenía de uno a tres orificios para el acceso y salida, uno a cuatro orificios para la fuga circunstancial y una cavidad interna para el "sueño diurno". Del total de ambientes examinados, 67% estaban localizados entre 0 y 60 m respecto a los cuerpos de agua, pero algunos también fueron encontrados más allá de los 100 m. De la población extraída por los cazadores, 74% fueron adultos y solamente 4% correspondieron a los infantes. La presión de caza anual fue estimada en 0,4 individuos/km² y la densidad para el área en general en 6,2 individuos/km². Finalmente, el modelo de cosecha indica que la caza de esta especie es sostenible en la cuenca del río Alto Itaya.