Buscar
Mostrando ítems 11-20 de 518
Casos de estudio de ccna1 y ccna2
La práctica consiste en configurar tres routers en Bogotá, Bucaramanga y Pasto, cada una de estas ciudades representa una sede, iniciamos el estudio de las sedes en forma jerárquica, basándonos en el número de equipos ...
Multivariate discrimination among cryptic mites of the genus Androlaelaps (Acari: Mesostigmata: Laelapidae) parasitic of sympatric akodontine rodents (Cricetidae: Sigmodontinae) in northeastern Argentina: possible evidence of host switch followed by speciation, with the description of two new species
(Springer, 2014-07)
Laelapids are among the most common ectoparasites of rodents. Currently, it is under discussion whether there is a single polixenous species that parasites a variety of hosts, or whether there are cryptic species highly ...
Contrasting consequences of different defence strategies in a natural multihost-parasite system
(Elsevier, 2018-05)
Hosts counteract infections using two distinct defence strategies, resistance (reduction in pathogen fitness) and tolerance (limitation of infection damage). These strategies have been minimally investigated in multi-host ...
From mammals back to birds: Host-switch of the acanthocephalan Corynosoma australe from pinnipeds to the Magellanic penguin Spheniscus magellanicus
(Public Library of Science, 2017-10)
Trophically-transmitted parasites are regularly exposed to potential new hosts through food web interactions. Successful colonization, or switching, to novel hosts, occur readily when ?donor? and ?target? hosts are ...
Local Conformational Switching of Supramolecular Networks at the Solid/Liquid Interface
(American Chemical Society, 2015-04)
We use the electric field in a scanning tunneling microscope to manipulate the transition between open and close packed 2D supramolecular networks of neutral molecules in nonpolar apolar media. We found that while the ...
The invasive parasitic copepod lernaea cyprinacea: Updated host-list and distribution, molecular identification and infection rates in Patagonia
(Regional Euro-Asian Biological Invasions Centre, 2019-06)
Although competition and predation are mechanisms more studied in biological invasions, ecologists and conservation managers have become aware of the threat imposed by the co-introduction of parasites. Parasites can be ...
Dengue virus RNA structure specialization facilitates host adaptation
(Public Library of Science, 2015-01)
Many viral pathogens cycle between humans and insects. These viruses must have evolved strategies for rapid adaptation to different host environments. However, the mechanistic basis for the adaptation process remains poorly ...
Phylogenetic and ecological factors affecting the sharing of helminths between native and introduced rodents in Central Chile
(Cambridge University Press, 2018-10)
In order to analyse the effect of hosts' relationships and the helminthic load on the switching of parasites between native and introduced hosts, we sampled rodents belonging to two suborders from Central Chile. We compared ...
Ferroelectric switching and dielectric response of P(VDF-TrFE)/PMMA blends
(2005-12-01)
The ferroelectric and the dielectric behaviors of binary blends formed by an equi-molar Poly(vinylidene fluoride trifluoroethylene) copolymer [P(VDF-TrFE)] and Poly(methyl methacrylate) [PMMA] were investigated, for several ...