Supressão de plantas daninhas por leguminosas consorciadas com cupuaçuzeiro na Amazônia Central.

O objetivo deste trabalho foi avaliar o efeito de leguminosas de cobertura consorciadas com cupuaçuzeiro na supressão de plantas daninhas. O experimento foi conduzido no campo experimental da Embrapa Amazônia Ocidental

Ocorrência De Metatrichia Robusta Kröber (Diptera: Scenopinidae) Na Amazônia E Sua Distribuição Sazonal

The geographical distribution of Metatrichia robusta Kröber is increased to include the Amazon Basin in northern South America, and the seasonal adult population fluctuations of this species are registered, showing a higher populacional density during the dry months (July -December)

Efeito de herbicidas no controle de plantas daninhas e nas características fisiológicas do cupuaçuzeiro.

O objetivo deste trabalho foi avaliar o efeito de herbicidas no controle de plantas daninhas e nas características fisiológicas do cupuaçuzeiro em condições de campo

Cambios en la composición de la captura y de la captura accesoria y en diversidad específica en una pesquería con nasas camaroneras semi-flotantes en tres ecosistemas insulares del Atlántico oriental sujetos a distinta presión antrópica

Composition and bycatch of semi-floating shrimp-trap fisheries (SSTF) were compared among areas with different levels of anthropogenic alteration of marine ecosystems. The three areas selected were Madeira, the Canary Islands and Cape Verde. Mean species richness and diversity of the SSTF did not show significant differences among areas. The dominant species in catches of the SSTF for all regions studied was the main target species, Plesionika edwardsii, which accounted for 96.0% of the catch in Cape Verde, 75.8% in Madeira and 59.1% in the Canary Islands. Targeted pandalid shrimps accounted for more than 96.8% of total catches for all areas combined. Numbers of non-target species caught were 18 (Madeira), 14 (Canary Islands) and 16 (Cape Verde), of which 13 (Madeira), 8 (Canary Islands) and 11 (Cape Verde) were always discarded. Bycatch accounted for 0.5% (Madeira), 0.7% (Canary Islands) and 3.1% (Cape Verde) in numbers. Shark species accounted for 0.11% of all individuals caught. A total of 5 species in Madeira, 6 in the Canary Islands and 4 in Cape Verde, accounting for 0.2% to 0.8% of total catches, were not landed due to the small size of individuals or low numbers of individuals caught (self-consumption). The present results suggest that the selectivity of traps for the main target species, P. edwardsii, in SSTF changes due to changes in species dominance, which are probably linked to the degree of human fishing exploitation of the marine ecosystems in each area.Se comparó la composición de las capturas y la captura accesoria de la pesquería de camarones con nasas semi-flotantes (SSTF) entre áreas con diferentes niveles de alteración de sus ecosistemas marinos por la acción humana. Se seleccionaron tres áreas: Madeira, Canarias y Cabo Verde. La riqueza de especies y la diversidad de la pesquería no mostraron diferencias significativas entre áreas. La especie dominante en las capturas de la SSTF fue la principal especie objetivo, Plesionika edwardsii, en las tres regiones estudiadas, variando desde 96.0% (Cabo Verde) hasta 59.1% (Canarias), con 75.8% en Madeira. Los camarones pandálidos objetivo de la pesca representaron más del 96.8% de la captura total en el conjunto de las tres áreas. El número de especies no-objetivo capturadas fue 18 (Madeira), 14 (Canarias) y 16 (Cabo Verde), de las cuales siempre fueron descartadas 13 especies en Madeira, 8 en Canarias y 11 en Cabo Verde. El porcentaje de individuos (en número) de las capturas accesorias en relación con las capturas totales representó el 0.5% en Madeira, 0.7% en Canarias y 3.1% en Cabo Verde. Las especies de tiburones representaron solo el 0.11% de los individuos capturados. Cinco especies en Madeira, seis en Canarias y cuatro en Cabo Verde representaron entre 0.2 y 0.8% del total de las capturas no desembarcadas debido a su pequeño tamaño o al bajo número de individuos capturados (auto consumo). Los resultados obtenidos sugieren que las nasas de la SSTF cambian sus características de selectividad con respecto a la especie objetivo principal, P. edwardsii, debido a cambios relativos entre las especies dominantes, lo que probablemente está relacionado con la explotación pesquera de los ecosistemas marinos en cada área

Dasydorylas Skevington, 2001 (Pipunculidae, Tomosvaryellini) of Colombia, with description of three new species and a key to Neotropical males

The cosmopolitan pipunculid genus Dasydorylas Skevington, 2001 includes just a few species from the Neotropical Region and is completely unknown to Colombia. Three new species of Dasydorylas are described from protected areas and conflict territories of limited access in Colombia, namely Dasydorylas colombiensis sp. nov. (type locality: Santuario de Fauna y Flora Iguaque, Boyacá), D. gibber sp. nov. (type locality: Santuario de Fauna y Flora Iguaque, Boyacá), and D. santainesensis sp. nov. (type locality: Páramo de Santa Inés, Belmira, Antioquia). Diagnoses, illustrations and distributional data of the new species are presented. Dasydorylas nigellus (Rafael, 1991) is recorded for the first time from Colombia and its amended diagnosis is provided. An identification key to males of all Neotropical species is presented. With this paper, the number of Neotropical species of Dasydorylas is increased from six to nine

Níveis crescentes de irradiância sobre a planta matriz com e sem adubação no enraizamento de estacas de guaranazeiro tratadas com ácido indolbutírico.

O guaraná (Paullinia cupana var. sorbilis (Mart.) Ducke) é uma espécie típica da biotaamazônica, cuja produção comercial é exclusivamente brasileira e seu fruto é conhecidomundialmente por suas qualidades organolépticas. É uma cultura de grande interesse paraa região amazônica, porém sua produtividade é ainda baixa, e possui elevadaheterogeneidade do material cultivado, originado de sementes. Por isto, recomenda-se apropagação dessa espécie por meio do enraizamento de estacas herbáceas de materiaisselecionados. Este trabalho teve como objetivo estudar os níveis crescentes de irradiânciaaplicados à planta matriz, associado ao uso de AIB no enraizamento de estacas deguaranazeiro, cultivar Mundurucânia. O delineamento adotado foi inteiramentecasualizado, em arranjo fatorial de 4 x 2, sendo quatro níveis de luz e presença ou ausênciade adubação, com 4 repetições e 10 estacas por unidade experimental. As plantas matrizesforam selecionadas de áreas adubadas e não adubadas e em seguida submetidas à 30%,50%, 70% e 100% de irradiância por 60 dias. A adubação foi feita conforme sistema deprodução do guaraná elaborado pela Embrapa e o sombreamento com telas depolipropileno. A partir dessas plantas foram obtidas estacas que receberam tratamento comAIB (2.000 mg kg-1) e permaneceram em viveiro por 90 dias sob nebulização intermitentepara enraizamento. Tanto o sombreamento da planta matriz, como a adubação, aumentou onúmero de raízes das estacas. O percentual de estacas enraizadas diferiu significativamenteentre os diferentes níveis de irradiância. O tratamento com 70% de irradiância apresentoumelhor resultado com 81,2% das estacas enraizadas. Este mesmo tratamento associado àadubação proporcionou as maiores médias de comprimento da raiz (18,92 cm); volume daraiz (2,82 mL) e matéria seca das raízes (0,43 g planta-1). Portanto, para a cultivarMundurucânia, a irradiância de 70% e adubação foram os melhores tratamentos para oenraizamento de estacas

New cholinesterase inhibitors for Alzheimer's disease: Structure Activity Studies (SARs) and molecular docking of isoquinolone and azepanone derivatives

A library of isoquinolinone and azepanone derivatives were screened for both acetylcholinesterase (AChE) and butyrylcholinesterase (BuChE) activity. The strategy adopted included (a) in vitro biological assays, against eel AChE (EeAChE) and equine serum BuChE (EqBuChE) in order to determine the compounds IC50 and their dose-response activity, consolidated by (b) molecular docking studies to evaluate the docking poses and interatomic interactions in the case of the hit compounds, validated by STD-NMR studies. Compound (1f) was identified as one of these hits with an IC50 of 89.5 mu M for EeAChE and 153.8 mu M for EqBuChE, (2a) was identified as a second hit with an IC50 of 108.4 mu M (EeAChE) and 277.8 mu M (EqBuChE). In order to gain insights into the binding mode and principle active site interactions of these molecules, (R)-(1f) along with 3 other analogues (also as the R-enantiomer) were docked into both RhAChE and hBuChE models. Galantamine was used as the benchmark. The docking study was validated by performing an STD-NMR study of (1f) with EeAChE using galantamine as the benchmark

Inpauema, a new genus of Odiniidae (Diptera) from Brazil, with description of five new species

A new genus and five new species of odiniids (Odiniidae: Traginopinae) are described from the Brazilian Amazon and Cerrado biomes: Inpauema mirador gen. nov. et sp. nov. (type species), I. catarinae sp. nov., I. gaimarii sp. nov., I. raimundoluizi sp. nov., and I. xavieri sp. nov. The genus is being characterized by a unique combination of diagnostic characters: body predominantly dark brown to black, with silvery-gray pruinose spots on inner margin of eyes, longitudinally along middle of lunule and face, on notopleuron and mesopleuron; postcranium concave from dorsal view; one pair of stout proclinate ocellar setae; postocellar setae absent; lunule shorter than frons; gena lacking upturned seta; antennae separated by a maximum distance of 2X the diameter of a single antennal socket and gonocoxal apodemes directed upward, forming an arch. A key to separate Helgreelia Gaimari, 2007 from Inpauema gen. nov. and for the new species is provided. Copyright © 2017 Magnolia Press

Inpauema, a new genus of Odiniidae (Diptera) from Brazil, with description of five new species

A new genus and five new species of odiniids (Odiniidae: Traginopinae) are described from the Brazilian Amazon and Cerrado biomes: Inpauema mirador gen. nov. et sp. nov. (type species), I. catarinae sp. nov., I. gaimarii sp. nov., I. raimundoluizi sp. nov., and I. xavieri sp. nov. The genus is being characterized by a unique combination of diagnostic characters: body predominantly dark brown to black, with silvery-gray pruinose spots on inner margin of eyes, longitudinally along middle of lunule and face, on notopleuron and mesopleuron; postcranium concave from dorsal view; one pair of stout proclinate ocellar setae; postocellar setae absent; lunule shorter than frons; gena lacking upturned seta; antennae separated by a maximum distance of 2X the diameter of a single antennal socket and gonocoxal apodemes directed upward, forming an arch. A key to separate Helgreelia Gaimari, 2007 from Inpauema gen. nov. and for the new species is provided. Copyright © 2017 Magnolia Press