Search results for "rema"
showing 10 items of 911 documents
Hadwenius tursionis (Marchi, 1873) n. comb. (Digenea, Campulidae) from the bottlenose dolphin Tursiops truncatus (Montagu, 1821) in the western Medit…
1994
The taxonomic position of Synthesium tursionis (Marchi, 1873) (Digenea, Campulidae) is revised, based on material from 147 worms from four bottlenose dolphins Tursiops truncatus stranded off the Comunidad Valenciana (Spanish western Mediterranean). The species is transferred to Hadwenius, as H. tursionis n. comb., and characterised by a high length/width ratio of the body, spinose cirrus and unarmed metraterm. Synthesium, a monotypic genus, becomes a synonym of Hadwenius. The intraspecific variation of some morphological traits is briefly discussed.
Relative reproductive success of co-infecting parasite genotypes under intensified within-host competition.
2015
In nature, host individuals are commonly simultaneously infected with more than one genotype of the same parasite species. These co-infecting parasites often interact, which can affect their fitness and shape host-parasite ecology and evolution. Many of such interactions take place through competition for limited host resources. Therefore, variation in ecological factors modifying the host resource level could be important in determining the intensity of competition and the outcome of co-infections. We tested this hypothesis by measuring the relative reproductive success of co-infecting genotypes of the trematode parasite Diplostomum pseudospathaceum in its snail host Lymnaea stagnalis whil…
European Lymnaeidae (Mollusca: Gastropoda), intermediate hosts of trematodiases, based on nuclear ribosomal DNA ITS-2 sequences.
2001
Freshwater snails of the family Lymnaeidae are of a great parasitological importance because of the very numerous helminth species they transmit, mainly trematodiases of large medical and veterinary impact. The present knowledge on the genetics of lymnaeids and on their parasite-host inter-relationships is far from being sufficient. The family is immersed in a systematic-taxonomic confusion. The necessity for a tool which enables species distinction and population characterization is evident. This paper aims to review the European Lymnaeidae basing on the second internal transcribed spacer ITS-2 of the nuclear ribosomal DNA. The ITS-2 sequences of 66 populations of 13 European and 1 North A…
Development of a Novel Method for Identification of Alaria alata Mesocercariae by Matrix-Assisted Laser Desorption/Ionization Time-of-Flight Mass Spe…
2021
Alaria (A.) alata mesocercariae (AM) have increasingly appeared as incidental findings during the mandatory inspection of wild boars for Trichinella in many European countries. An Alaria spp.-specific PCR is available for the identification of AM
Surface, mechanical and barrier properties of bio-based composite films based on chitosan and whey protein
2014
Mono-component and composite bilayer and blend films composed of chitosan and whey protein were made. Colour, microstructure, water contact angles, swelling, water vapour sorption, barrier properties (oxygen, water vapour), water vapour diffusion coefficients and mechanical properties were determined. The influence of water vapour on barrier properties was studied in relation to the surface and structural properties. Mono-component and bilayer films were transparent with a homogeneous surface. Contrarily, blend films were translucent. Bilayer films had significantly lower water vapour permeability in comparison to mono-component and blend films. In all bilayer films, the air side (chitosan)…
Lymnaea cousinni (Gastropoda: Lymnaeidae) as transmitter of fascioliasis
2007
Dear Editor,In the article entitled “First report of Lymnaea cou-sini Jousseaume, 1887 naturally infected with Fasciolahepatica (Linnaeus, 1758) (Trematoda: Digenea) inMachachi, Ecuador” recently published by AngelVillavicencio A and Mauricio Carvalho de Vasconcellosin Memorias do Instituto Oswaldo Cruz (vol. 100, is-sue 7, pages 735-737, November 2005), it is stated thattheir finding in Ecuador represents the first report ofspecimens of this lymnaeid species naturally infectedby the liver fluke. However, it is well known from longago that this species acts as intermediate host of fascio-liasis in Andean countries. In the first half of the lastcentury, Brumpt et al. (1939-1940) already demo…
Post-larval development of the microcotylid monogenean Sparicotyle chrysophrii (Van Beneden and Hesse, 1863): comparison with species of Microcotylid…
2011
Abstract The chronology of post-larval development in S. chrysophrii, a polyopisthocotylean monogenean parasite of the gilthead seabream (Sparus aurata L.), was experimentally studied. It is compared with other species within the Microcotylidae and the Heteraxinidae, including an analysis of the changes in attachment and the growth rate. Gilthead seabreams infected by larvae of S. chrysophrii were killed periodically in order to collect the different developmental stages. Parasite total body length, haptor length, largest clamp width, and total number of clamps were recorded. Specimens of S. chrysophrii in culture conditions at 20 °C became gravid after 26–30 days, with 37 pairs of clamps. …
Situación de las personas seropositivas ante el Real Decreto 1971/1999, que regula la valoración de minusvalías
2002
En esta presentación se determina en primer lugar- el concepto de minusvalía a tenor de los niveles en que la Organización Mundial de la Salud clasifica las consecuencias de una enfermedad .A continuación se indican los criterios de valoración del grado de minusvalía de la personas con VIH/SIDA, según el Real Decreto 199 11 1999. Tras la exposición de una breve historia de la Mesa Estatal de Minusvalías de VlH (MEMVIH), se analizan y denuncian en nombre de esta Mesa y en colaboración con el lMSERSO las graves deficiencias, sobre todo en su dimensión discriminatoria negativa respecto a las personas afectadas por el VIH, que se observan en este Real Decreto. Por último se recuerdan los compro…
Le misure cautelari personali nella strategia del "minimo sacrificio necessario". (Legge 16 aprile 2015, n. 47)
2015
Il lavoro ha ad oggetto l'analisi della legge n. 47 del 2015 che ha impresso modifiche non di poco conto in più punti della disciplina delle misure cautelari personali. Si è voluto inquadrare la novella legislativa nel contesto culturale, prima ancora che normativo, di evoluzione della concezione della restrizione della libertà personale nell'ottica del carattere afflittivi che ne impone la residualità. Vengono analizzate poi le singole modifiche in punto di presupposti (esigenze cautelari), di recupero della eccezionalità quanto all'applicazione della misura restrittiva più grave; ancora la diversa fisionomia della motivazione cautelare e il rafforzamento dei diritti partecipativi del sogg…
Characterisation of Lymnaea cubensis, L. viatrix and L. neotropica n. sp., the main vectors of Fasciola hepatica in Latin America, by analysis of the…
2007
Although, in the endemic areas throughout the world, human fascioliasis presents varying patterns in its epidemiology, the species of lymnaeid snail that act as intermediate hosts and vectors are always crucial in the transmission of the causative parasites. Species in the Galba/Fossaria group of snails, such as Lymnaea cubensis, L. viatrix var. A ventricosa, L. viatrix var. B elongata and Galba truncatula, appear to be frequently involved in the transmission of Fasciola hepatica in Central and South America, although specific classification within this morphologically and anatomically confusing group is often very difficult. To explore the potential use of molecular analyses in the identif…