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Effects of queen importation on the genetic diversity of Macaronesian island ho...

Beekeeping practices such as the importation of non-native honey bee queens may interact with the conservation of honey bee biodiversity. Island honey bee populations are particularly appropriate to test the impact of the introduction of foreign subspecies into their genetic diversity and structure. Here we have used microsatellite markers to evaluate the temporal genetic variation over the last decade in Macar...

Análisis de introgresión en Apis mellifera iberiensis y Apis mellifera mellifer...

Diferentes estudios han agrupado las subespecies de A. mellifera en cuatro linajes evolutivos basados sobre marcadores morfométricos, ecológicos, microsatélites y mtDNA: Africano (A), Medio Oriente (O), Este y Centro de Europa (C), Norte y Oeste de Europa (M). El linaje M está representado por las subespecies A. m. iberiensis y A. m. mellifera, cuya distribución es la Península Ibérica para la primera y desde l...

Comparação dos níveis de introgressão da linhagem C na abelha negra (Apis melli...

Na Europa estão presentes duas linhagens de Apis mellifera: linhagem C na parte central e oriental e M na ocidental. A linhagem C agrupa cerca de 10 subespécies, entre as quais se encontram as duas mais utilizadas pela apicultura à escala mundial: a A. m. ligustica e a A. m. carnica. A linhagem M agrupa apenas duas subespécies: a A. m. mellifera, a norte dos Pirenéus, e a A. m. iberiensis, na Península Ibérica....

Genetic integrity of the Dark European honey bee (Apis mellifera mellifera) fro...

The recognition that the Dark European honey bee, Apis mellifera mellifera, is increasingly threatened in its native range has led to the establishment of conservation programmes and protected areas throughout western Europe. Previous molecular surveys showed that, despite management strategies to preserve the genetic integrity of A. m. mellifera, protected populations had a measurable component of their gene p...

Contaminated water, stream sediments and soils close to the abandoned Pinhal do...

The Pinhal do Souto mine exploited a quartz vein containing uranium minerals, mainly autunite and torbernite. This vein intersects a two-mica granite containing 10 ppm U and uraninite. The mine was exploited underground and produced 93,091 kg U3O8 between 1978 and 1989 and was then closed down. Two dumps were left in the mine area and these are partially covered by natural vegetation. Groundwater and surface wa...

Invasão biológica de Corythucha ciliata em espaços verdes urbanos de Portugal: ...

Corythucha ciliata (Hemiptera: Tingidae) é um inseto nativo da América do Norte que foi introduzido na Europa, pela Itália, em 1964. Desde então tem se expandido por toda a Europa, desconhecendo-se a data de chegada e a sua área de distribuição em Portugal. Esta importante praga invasora alimenta-se na face inferior das folhas de plátano, uma das mais importantes árvores ornamentais nos espaços verdes urbanos e...

Vigilância laboratorial das infeções por Neisseria gonorrhoeae em Portugal, 200...

Caso radiológico: Pseudo-obstrução intestinal ileocólica

We present the clinical case of an 11-year-old boy with cerebral palsy. He was observed in the Gastroenterology Department for the presence of recurrent episodes of vomiting (bilious and/or fecaloides) with one year of development, preceded by pallor, sweating, sense of abdominal pain and abdominal swelling. Recently the episodes occur every week. The abdominal Computed Tomography (CT) showed megacolon compatib...

Signatures of selection in the Iberian honey bee (Apis mellifera iberiensis) re...

Understanding the genetic mechanisms of adaptive population divergence is one of the most fundamental endeavours in evolutionary biology and is becoming increasingly important as it will allow predictions about how organisms will respond to global environmental crisis. This is particularly important for the honey bee, a species of unquestionable ecological and economical importance that has been exposed to incr...

Unraveling the local adaptation and population structure of Iberian honey bee

Unraveling the complex evolutionary history of Apis mellifera iberiensis is a challenging task. Several studies have been carried out in the Iberian honey bee to explain its origin, suggesting two possible hypotheses: a primary intergradation process (morphology and allozymes), or a secondary contact process (mtDNA) supported by an abrupt southwestern-northeastern cline formed by two divergent lineages. Surveys...