Search results for "CAPE"

Spatial discontinuity of Optomotor-blind expression in the Drosophila wing imaginal disc disrupts epithelial architecture and promotes cell sorting

2010

Abstract Background Decapentaplegic (Dpp) is one of the best characterized morphogens, required for dorso-ventral patterning of the Drosophila embryo and for anterior-posterior (A/P) patterning of the wing imaginal disc. In the larval wing pouch, the Dpp target gene optomotor-blind (omb) is generally assumed to be expressed in a step function above a certain threshold of Dpp signaling activity. Results We show that the transcription factor Omb forms, in fact, a symmetrical gradient on both sides of the A/P compartment boundary. Disruptions of the Omb gradient lead to a re-organization of the epithelial cytoskeleton and to a retraction of cells toward the basal membrane suggesting that the O…

Natural Genetic Variation of Freezing Tolerance in Arabidopsis

2006

Abstract Low temperature is a primary determinant of plant growth and survival. Using accessions of Arabidopsis (Arabidopsis thaliana) originating from Scandinavia to the Cape Verde Islands, we show that freezing tolerance of natural accessions correlates with habitat winter temperatures, identifying low temperature as an important selective pressure for Arabidopsis. Combined metabolite and transcript profiling show that during cold exposure, global changes of transcripts, but not of metabolites, correlate with the ability of Arabidopsis to cold acclimate. There are, however, metabolites and transcripts, including several transcription factors, that correlate with freezing tolerance, indica…

2015

Competition over access to reproductive opportunities can lead males to harm females. However, recent work has shown that, in Drosophila melanogaster, male competition and male harm of females are both reduced under conditions simulating male-specific population viscosity (i.e., in groups where males are related and reared with each other as larvae). Here, we seek to replicate these findings and investigate whether male population viscosity can have repercussions for the fitness of offspring in the next generation. We show that groups of unrelated-unfamiliar (i.e., unrelated individuals raised apart) males fight more intensely than groups of related-familiar males (i.e., full siblings raise…

Survival relative to new and ancestral host plants, phytoplasma infection, and genetic constitution in host races of a polyphagous insect disease vec…

2014

Dissemination of vectorborne diseases depends strongly on the vector's host range and the pathogen's reservoir range. Because vectors interact with pathogens, the direction and strength of a vector's host shift is vital for understanding epidemiology and is embedded in the framework of ecological specialization. This study investigates survival in host-race evolution of a polyphagous insect disease vector, Hyalesthes obsoletus, whether survival is related to the direction of the host shift (from field bindweed to stinging nettle), the interaction with plant-specific strains of obligate vectored pathogens/symbionts (stolbur phytoplasma), and whether survival is related to genetic differentia…

Breeding Geoffroy's cat in captivity

1975

“Misura/Relazione. Area Porta Ovest"

2010

The paper describes the different phases of the project experience faced during the INTERNATIONAL PhD SUMMER SCHOOL: STRATEGY RESEARCH PROJECTS FOR THE CONTEMPORARY CITY. TALL BUILDINGS AND LANDSCAPE. The construction of the landscape through the composition of the figure; the relationship of the tall building with its context; and, finally, the definition of the elements of the tall building consisting of the plinth, the central body, and the crowning.

Informational analysis of forest landscape spatial heterogeneity

1999

Summary Under the perspective of forest ecosystem management, landscape is interpreted as a functioning structure. From an inventory and monitoring operational point of view, such an approach implies wise use of geographic information systems and remote sensing techniques enabling a global view of the territorial mosaic. From a methodological point of view, landscape ecology theory may be used as the assessment framework. Remotely sensed data provide excellent opportunities for the involved analyses, using both vegetation density measures and spatial statistics. The objective of this paper was to assess landscape spatial heterogeneity using an analysis method based on Shannon's information …

Análisis y tipología de brechas viarias dentro del palimpsesto urbano de València

2020

espanolEl palimpsesto urbano es el resultado de la superposicion y yuxtaposicion diacronica de una serie de modelos de desarrollo urbano que han determinado, en mayor o menor medida, la trama viaria actual. Resultado de esta dinamica, la trama urbana de muchas ciudades presenta una serie de brechas viarias singulares –por sus formas sinuosas, transversales u oblicuas– que dan caracter e identidad al paisaje urbano. En este articulo se analizan –mediante SIG y revision bibliografica– las brechas viarias del palimpsesto urbano, tomando como paradigma el plano de la ciudad de Valencia. Se lleva a cabo tambien una original categorizacion de las brechas viarias de acuerdo a una taxonomia derivad…

Caracterización, Inventariación y aplicación del método de Valoración Biogeográfica de paisajes vegetales (LANBIOEVA) a la comarca de Collsacabra (Gi…

2018

The study presented in this paper takes part of a research project (LANBIOEVA: Landscape Biogeographic Evaluation) carried out for the past 25 years and it is, for now, its last stage. It’s a global landscape valuation method focused on vegetation as a main element of different units that can be evaluated. So far, the use of this method has resulted in numerous works: books, articles, book chapters, communications and presentations, and it has been applied in the study of different temperate and boreal regions of Europe and America. The method has been applied in the study and assessment of diverse vegetation landscapes of the Collsacabra shire (Girona). The objective is to verify its effec…

GEOGRAFIA – Campo. Epistemologia. Immaginazione. Migrazioni. Paesaggio. Antropocene. Politica. Bibliografia

2020

Voce "Geografia" per l'Enciclopedia Treccani "Geography" entry for the Treccani Encyclopedia