Search results for "AMPA"

Welcome aboard: are birds migrating across the Mediterranean Sea using ships as stopovers during adverse weather conditions?

2022

Birds use stopovers during migration to interrupt endurance flight in order to minimize immediate and/or future fitness costs. Stopovers on ships is considered an exceptional and anecdotal event in the ornithological literature. This does not match the experience we had in the summer of 2021, during an oceanographic campaign in the Central Mediterranean, when we regularly observed on average 2.8 birds, of at least 13 species, stopping on board during the 25 days of the campaign. The median stopping time was 42 min, ranging from a few minutes to overnight stays on board. The probability of finding a bird stopping aboard increased with wind force and cloud cover. Birds also stopped more often…

I problemi interpretativi dell'istituto del privilegio di stampa nella parabola della Reale Stamperia di Palermo

2009

Studies on bucephalid digeneans parasitising molluscs and fishes in Finland. II. The description of Rhipidocotyle fennica n. sp. and its discriminati…

1992

Rhipidocotyle fennica n. sp. (= Rhipidocotyle Type A of Taskinen et al., 1991) from the intestine of Esox lucius in central Finland is described and compared by means of a principal components analysis (PCA) with R. campanula (= Rhipidocotyle Type B of Taskinen et al., 1991). Its cercaria develops in the bivalve Anodonta anatina and the metacercaria occurs in the skin and fins of Rutilus rutilus. The metacercaria is discriminated from that of R. campanula by PCA and is described along with aspects of the chaetotaxy of the cercaria. The new species is distinguished from R. campanula, R. kovalae, R. papillosa and R. septpapillata.

In vitro efficacy of praziquantel against the cercariae of Diplostomum sp., Rhipidocotyle fennica and R. campanula.

2009

Interhemispheric connections through the pallial commissures in the brain ofPodarcis hispanicaandGallotia stehlinii(Reptilia, Lacertidae)

1990

The cells-of-origin and the mode and site of termination of the interhemispheric connections passing through the anterior and posterior pallial commissures in the telencephalon of two lizards (Podarcis hispanica and Gallotia stehlinii) were investigated by studying the anterograde and retrograde transport of unilaterally injected horseradish peroxidase. The commissural projections arise mainly from pyramidal cells in the medial, dorsomedial, and dorsal cortices (medial subfield). Additionally some non-pyramidal neurons in the medial and dorsal cortices contribute to the commissural system. Medial cortex neurons project to the contralateral anterior septum through the anterior pallial commis…

Neuronal circuitry in the medial cerebral cortex of lizards

1997

The medial cortex of lizards is a simple three-layered brain region displaying many characteristics which parallel the hippocampal fascia dentata of mammals. Its principal neurons form a morphologically diverse population, partly as a result of the prominent continuous growth of this nervous centre. By using the classical Golgi impregnation method we describe here the morphology of the principal neurons (8 types) and the short-axon interneurons (18 types) populating the medial cortex of Podarcis hispanica as well as the connections between them.

The role of lantern fish (Myctophidae) in the life-cycle of cetacean parasites from western Mediterranean waters

2015

Myctophids (lantern fish) and cephalopods play a key role in trophic webs from the continental slope and oceanic waters linking the zooplankton to top predators. Many cetaceans feed on both lantern fish and cephalopods, and such prey would thus be expected to bridge the trophic gap in the life-cycles of helminths infecting cetaceans. However, information on the life-cycles of most of these helminths is extremely scanty. We examined the parasite fauna of myctophids and cephalopods in two areas from the western Mediterranean where at least 21 helminth taxa from cetaceans have been reported and both cetacean diversity and abundance is high. A total of 1012 individuals of 8 lantern fish species…

A New Species ofTelenomusHaliday (Hymenoptera: Scelionidae) Associated with Egg Batches of the Pine Processionary Moth,Thaumetopoea pityocampa(Dennis…

2009

Telenomus thaumetopoeae Buhl sp. n. is described from northeastern València (Peninsular Spain) taking as starting point females parasitizing the egg-batches of the Pine Processionary Moth, Thaumetopoea pityocampa (Dennis et Schiffermüller, 1775). Its morphological affinities with the most closely related species and parasitism data are offered.

A model study for the progressive disruption of CA1 firing properties during Alzheimer’s disease

2011

Several independent studies show that β-Amyloid (Aβ) peptides accumulation, one of the characteristic hallmark of Alzheimer’s Disease (AD), can affect the normal neuronal activity in different ways causing an increase or a decrease in neuronal membrane excitability. For example, experimental evidence for a negative impact on neuronal membrane in animal models of AD has been obtained in dual patch recordings in rat hippocampal tissue slices, in which Aβ blocked K channels in pyramidal cell dendrites, causing an increase in dendritic membrane excitability. The resulting increased Ca2+ influx and excitoxicity may lead to dendritic degeneration. However, further experimental evidence suggests t…

Genres of participation in social networking systems: A study of the 2009 Norwegian parliamentary election

2010

Published version of a chapter in the book: Electronic Participation. Also available at http://dx.doi.org/10.1007/978-3-642-15158-3_9 In the Norwegian context, eParticipation in the form of online campaigning has been on the agenda since 2001. After Obama’s successful presidential campaign in 2008, expectations about the use of SNS in the Norwegian parliamentary election were high. This study explores genres of participation in the early stages of the 2009 Norwegian parliamentary election campaign. The main finding is that the political parties have seen the need for a presence in SNS’, and that a genre repertoire for political communication through SNS is beginning to evolve. However, ther…