Search results for "Spot"
showing 10 items of 371 documents
Significance of butterfly eyespots as an anti-predator device in ground-based and aerial attacks
2003
Many butterfly genera are characterised by the presence of marginal eyespots on their wings. One hypothesis to account for an occurrence of eyespots is that these wing pattern elements are partly the outcome of visual selection by predators. Bicyclus anynana (Satyrinae) has underside spotting on its wings but there is also a seasonal form in which the eyespots are reduced in size or totally absent. This natural variation gives us a useful tool to test the hypothesis that marginal eyespot patterns can decoy the attacking predator by, at least sometimes, diverting attack from vital body parts to the edges of the wings. We used lizards, Anolis carolinensis, and pied flycatchers, Ficedula hypol…
Saules aktīvo apgabalu īpatnību pētījumi, izmantojot novērojumus mikroviļņu diapazonā
2013
Elektroniskā versija nesatur pielikumus
Sudden vestibular and hearing loss in mediterranean spotted fever: The first case report
2019
Mediterranean spotted fever is an infection disease caused by Rickettsiae and transmitted by tick puncture; the diffusion of such disease is wide in countryside of the Mediterranean regions. The disease may be complicated by several organ failure due to a vasculitis, and also the inner ear can be involved although rarely. We report the first documented case of total involvement of inner ear with sensorineural hearing loss and acute vestibular impairment. The patient was treated with medical therapy and resolution of the infection, but the inner ear damage was not reversible with persistent loss of all functions, documented by instrumental vestibular analysis.
Citrus biotechnology
2020
Agricultural crops that can better withstand the changing climatic and pathogen landscape have been produced through natural selection throughout the millennia and, in recent years, through the process of human-assisted plant breeding and selection. However, a lack of genetic diversity in many commercially cultivated crops (due to monoculture) has made them more vulnerable to biotic and abiotic stresses (Esquinas-Alcazar, 2005; Keneni et al., 2012). Citrus, belonging to the Rutaceae family, is one of the most important commercial woody fruit crops in the tropical and subtropical areas of the world. The origin of citrus is traced back to parts of tropical and subtropical Southeast Asia (Wu e…
Plant landscape and phytodiversity in the ancient town of Erice (NW Sicily)
2018
The The town of Erice, in the province of Trapani, is an environmental unicum in the context of the ancient settlements of western Sicily. Its history, substrates, and particular climate, generated by its geo-orographic position, make it a particular hotspot of natural and cultural biodiversity. Located on the top of Mount San Giuliano, in addition to natural habitats with their specific florulas, the town shows small gardens and among the few inhabitants there is a widespread green culture. A tourist des- tination by its various architectural and landscape historical peculiarities, Erice presents a residential center made up by small stone buildings, with small courtyards or “bagli” often …
Drawing the Line at Neglected Marine Ecosystems: Ecology of Vermetid Reefs in a Changing Ocean
2016
Vermetid mollusks form reefs that protect coasts from erosion, regulate sediment transport, serve as carbon sinks, and provide habitat for many fish and invertebrates. This biogenic habitat is found in tropical, sub-tropical, and warmtemperate coastal areas, such as Bermuda, oceanic islands in Brazil, and Hawaii, several locations within the Caribbean and the Mediterranean. These reefs are functionally similar to tropical coral fringing reefs but are built by gregarious vermetid gastropods cemented by a crustose coralline algal species, which probably triggers their settlement. Some descriptive studies in different regions worldwide and comparisons among tropical and Mediterranean reefs con…
Priority areas for the conservation of Atlantic forest large mammals
2009
Large mammal faunas in tropical forest landscapes are widely affected by habitat fragmentation and hunting, yet the environmental determinants of their patterns of abundance remain poorly understood at large spatial scales. We analysed population abundance and biomass of 31 species of medium to large-bodied mammal species at 38 Atlantic forest sites (including three islands, 26 forest fragments and six continuous forest sites) as related to forest type, level of hunting pressure and forest fragment size using ANCOVAs. We also derived a novel measure of mammal conservation importance for each site based on a "Mammalian Conservation Priority index" (MPi) which incorporates information on spec…
The mass determination challenge for exoplanetary science
2023
The mass of an exoplanet is a key parameter for the characterisation of the internal structure of a planet, as well as the study of the formation and the evolution of the planet, and its atmosphere. The radial velocity technique allows for measuring the planetary mass from the radial velocity variation of its parent star. However, limitations in the property determination of exoplanets, particularly in their masses, can arise from various sources especially from astrophysical noise due to stellar variability, caused by magnetic activity, which affects the detection and characterisation of exoplanets. This PhD thesis aims to understand the impact of our knowledge of the planetary mass in the…
Master in Cinema Pubblicitario in Digitale. Film pubblicitari
2010
Prodotto multimediale a contenuto scientifico sulle sperimentazioni artistico-tecnologiche effettuate nell'ambito del master in Cinema Pubblicitario in Digitale ed. 2010
Einleitung
2018
The book focuses thematically on the 'literary images of rulers between justice and despotism' in German Literatur. The literary images of rulers between justice and despotism, historical rulers and kings