Prospecção e identificação de moscas-das-frutas e seus inimigos naturais na Ilha de Cotijuba, Pará.

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Analysis of the effect of renal excretory system cooling during thermal radiofrequency ablation in an animal model

Analysis of renal excretory system integrity and efficacy of radiofrequency ablation with and without irrigation with saline at 2 o C (SF2). The median third of sixteen kidneys were submitted to radiofrequency (exposition of 1 cm) controlled by intra-surgical ultrasound, with eight minutes cycles and median temperature of 90 o C in eight female pigs. One excretory renal system was cooled with SF2, at a 30ml/min rate, and the other kidney was not. After 14 days of post-operatory, the biggest diameters of the lesions and the radiological aspects of the excretory system were compared by bilateral ascending pyelogram and the animals were sacrificed in order to perform histological analysis. There were no significant differences between the diameters of the kidney lesions whether or not exposed to cooling of the excretory system. Median diameter of the cooled kidneys and not cooled kidneys were respectively (in mm): anteroposterior: 11.46 vs. 12.5 (p = 0.23); longitudinal: 17.94 vs. 18.84 (p = 0.62); depth: 11.38 vs. 12.25 (p = 0.47). There was no lesion of the excretory system or signs of leakage of contrast media or hydronephrosis at ascending pyelogram. Cooling of excretory system during radiofrequency ablation does not significantly alter generated coagulation necrosis or affect the integrity of the excretory system in the studied model401939

Reprogramming of rye rDNA in triticale during microsporogenesis

To test the hypothesis that interspecific genomic and chromosome interactions leading to nucleolar dominance could be reprogrammed in meiosis, we compared the expression of distinct nucleolar organizing region (NOR) loci in hexaploid triticale root tip meristematic cells, pollen mother cells and young pollen grains. Interphase and metaphase cells were silver stained to quantify nucleoli and active NOR loci respectively. A marked difference in the ribosomal RNA gene activity of each locus was observed when different types of cells were compared: in somatic and pollen mother cells, rRNA gene activity was mainly restricted to major wheat NORs (1B and 6B) with only a small contribution from rye NORs (1R). In contrast, in young pollen grains, all NORs present, including the 1R NORs, were consistently active. The expression of all NORs just after meiosis is considered to be a consequence of meiotic reprogramming of rye origin rDNA. Gene reprogramming mediated by the resetting of methylation patterns established early in embryogenesis is suggested to be responsible for the differential expression of the NORs of rye origin in distinct developmental stages of triticale

Primeiro registro de Anastrepha Fraterculus (Diptera: Tephritidae) no Estado do Pará.

Resumo 1496-2

Primeiro registro de Anastrepha Fraterculus (Diptera: Tephritidae) no estado do Pará.

Resumo 1496-2

Principais espécies de mosca-das-frutas e seus inimigos naturais em frutos comercializados em feiras livres do município de Belém, Pará.

Resumo 1609-1

Primeiro registro de Anastrepha distincta (Greene) (Diptera: Tephritidae) no estado do Pará.

Resumo 1609-2

Identificação das principais espécies de mosca-das-frutas e seus inimigos naturais na ilha de Cotijuba, Pará.

Resumo 1596-1

Principais espécies de mosca-das-frutas e seus inimigos naturais em frutos comercializados em feiras livres do Municipio de Belém, Pará.

Resumo 1609-1