1,721,165 research outputs found
Sulla frequenza dell'infestazione da Fasciola hepatica nei bovini del Piemonte, come risulta da un'indagine svolta in alcuni mattatoi della regione
No full textIndividual based measure of interactive/isolationist degree of infracommunities : towards an assessment of the role of intrinsic and extrinsic factors
Full text linkThe comprehension of the parasite communities structure is a key topic of the parasite ecology pointing the attention to the influence of interaction between co-occuring species.
The idea that communities maybe something more than the result of the current assemblage and that they may reflect the evolutionary process, lead to the proposal of the isolationist/interactive classification of parasite communities. A limit of this vision is that communities are classified, mainly through qualitative assessment, in one of these extreme class missing the continuum occuring in nature. Attempts to develop methods to quantify the isolationist/interactive degree have been addressed mainly at host population level.
Besides, parasite interactions occur within individual hosts and considering the observed heterogeneities of parasites intensities, host individuals may register different isolationism/interaction degree. The analysis at population level may miss to identify the role of intrinsic and extrinsic factors.
We developed a measure at single host level based on the concept of crowding which expresses the mean number of interactions with other parasites each one experiences.
We applied this measure to the parasite community of mountain ruminants which is characterized by high variability between seasons, age and sexes. The mean parasite interaction/isolationism showed high variability mainly related to temporal effect with lesser influence played by host factors
Sulla necessità di una mappa della diffusione dell'elmintofauna dei ruminanti domestici d'Italia
No full textSulla diffusione di Fasciola hepatica nei bovini del Piemonte, come risulta da un'indagine effettuata nel macello pubblico di Brà
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Impiego di aspersioni manuali con deltametrina nel controllo della rogna psoroptica degli ovini
No full textDynamics of parasite communities and interactions between wild and domestic ruminants
No full textDynamics of parasite communities and host-parasite-environment interactions can be influenced by different factors. The present note, by discussing some field experiences in wild and domestic ruminant populations, approaches eco-epidemiology of abomasal nematodes in relation with host health and dynamics. Factors possibly playing a role in the host-parasite relationship are discussed, as well as possible use of macroparasites as ecological and sanitary indicators. The above topics are approached in a management perspective, in particular regarding interactions between domestic and wild ruminant populations
Parametri ematochimici nello stambecco : influenza di fattori fisiologici e di errori preanalitici
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