2,788 research outputs found
Pathogenetical mechanism and development of a new diagnostic kit for the parrot proventricular dilatation disease
No full textPDD is a progressive disease often fatal, that occurs in several parrot species but a common susceptibility of all parrots is suspected. It also may occur in non psittacine bird like, gooses, hawks, doves tucans and flamingos. The ill birds develop gastrointestinal or central nervous system signs. These presentation can be occur like a combination of both or alone. The clinical signs are caused by histological nervous lesions, characterized by a\ud
non suppurative encephalomyelitis and/or perineural lymphoplasmacytic infiltrates around peripheral nerves. The intramural neural plexa of digestive tract were constanctly involved.\ud
The diagnosis is characterized by inconsistent clinical laboratory findings. A presumptive diagnosis of PDD is often based on anamnestic information, contrast radiographs,\ud
fluoroscopy in PDD suspect birds. Until now the only specific and reliable method used for the diagnosis is the crop biopsy. The presence of characteristic histological perineural infiltrates are strongly suggestive of the disease and necessary for a definitive diagnosis.\ud
Until now the etiology and the pathogenesis are unclear, even if, many Authors suppose the potential role of unclear virus as the causative agent of PDD.\ud
The different aspects of this disease show a lot of analogies with the human Guillain Barrè syndrome, so we have focalised the our study to clarify the pathogenesis. To do this, we investigated if the PDD can be an autoimmune disease and if a possible presence of the blood antiganglioside antibodies can be the starter of this autoimmune pathological mechanism, like was observed in more than 50% of the GBS’s cases
Cortisol and camera-trapping as useful tools to explore ecological aspects of the European wildcat (Felis silvestris silvestris)
No full textDrugs response of Falcaustra kutcheri parasite in Sulawesi forest turtle (Leucocephalon yuwonoi) in Italian breeding centre.
No full textSulawesi forest turtle (Leucocephalon yuwonoi) even if it’s listed on CITES Appendix II actually is considered critically endangered for IUCN red list. Management of a sustainable captive population of the critically endangered Sulawesi forest turtle (Leucocephalon yuwonoi) has been a priority for the conservation of the species. Mortality in captivity varies widely among keepers and shipments, but generally ranges from 25 to 100%. In breeding center the most common reported causes of death were correlated with parasite infestation. In 2000 Bursey et al. described and identified for the first time Falcaustra kutcheri in one free-living adult male of Sulawesi Forest Turtle (Geoemyda yuwonoi) now called Leucocephalon youwonoi. After this first description very little is known about this specie of nematode and its cycle, moreover the knowledges about the management of breeding of Sulawesi Forest Turtle in captivity is very poor. This report describes the first european identification of this parasite in imported Leucocephalon youwonoi, and the drug treatments responce against Falcaustra kutcheri and protozoan infestation in seven subjects of Leucocephalon youwonoi from italian breeding centre
Can the donkey be a possible prey for golden jackals? Description of the predation strategy on multiple attacks
No full textStudio su un'anfora di tipo Lamboglia 2 rinvenuta nella baia di Vallugola (Pesaro) e considerazioni generali sul sito
No full textL'articolo riguarda il rinvenimento di un'anfora di tipo Lamboglia 2 nel terreno della baia di Vallugola (Pesaro), presso la spiaggia di ciottoli, dove si trovavano probabilmente un'officina di produzione e un approdo, cronologicamente collocabili tra la seconda metà del II e la fine del I secolo a.C., ma con possibile continuità nella prima età imperiale.The article concerns the discovery of a Lamboglia 2 type amphora in the land of Vallugola bay (Pesaro), near the pebbles beach, where there were probably a workshop and a landing place for ships, chronologically placed between the second half of the 2nd and the end of the 1st century BC, but with possible continuity in the early imperial age
Stay home, stay safe? High habitat suitability and environmental connectivity increases road mortality in a colonizing mesocarnivore
No full textContext Anthropogenic structures have considerable effects on ecosystems, disrupting natural population processes and representing a serious risk in terms of vehicle collisions. The golden jackal (Canis aureus) is a mesocarnivore species whose range is expanding in Europe. Roadkills are one of the main human-induced mortalities in Italy to the species.
Objectives Identify road-related characteristics and ecological factors related to golden jackal roadkill risk in Italy.
Methods We used habitat suitability (Maxent) and connectivity (Circuit theory) models to derive 15 metrics potentially affecting roadkill risk. We tested their influence using Bayesian generalized linear models and generalized linear models comparing golden jackal roadkill locations to random locations. Furthermore, we tested if there were significant sex, age-related and seasonal differences among roadkilled individuals.
Results We found that roadkill risk was higher in areas characterized by higher values of habitat suitability and connectivity, habitat fragmentation and along highways. It was lower with increasing distance to the source population and in the presence of guardrails. No significant differences were detected in terms of roadkill risk between sexes, age classes and season.
Conclusions The identified factors affecting road mortality of golden jackals in Italy provide insights on how to mitigate wildlife-vehicle collisions. Crossing areas, and visual and acoustic warnings for wildlife, as well as the importance of managing fences along high traffic volume roads could help mitigate further damage. Finally, there is a need to further investigate the effectiveness of mitigation measures in the light of the golden jackal’s ongoing expansion in a human-modified landscape
Fidelity of corncrakes (Crex crex) to a singing position during one breeding season
No full textIn the avian world, site fidelity may be considered as the tendency of individuals
to remain in the same area during breeding season. The Corncrake (Crex crex) is a
polygynous species, with some males moving considerable distances to new singing
areas. The aim of this study was to quantify site fidelity of male Corncrakes during
one breeding season. We used telemetry in two monitoring areas to track bird movements
and estimate their home ranges. In Slovenia, a high dynamic situation among
males was shown, with replacement of individuals in some singing areas. Meanwhile in
Italy, a high site fidelity during daylight was shown. Monitoring of Corncrakes relies on
counting singing males during breeding season; however, this work provides evidence
that males can change their position, possibly leading to an underestimate of singing
males. Our results highlight an important problematic in monitoring a polygynous bird
First telemetry data on golden jackal (Canis aureus) in Italy: insights on the species’ spatial ecology
No full textDeer for dinner! First documented predation with camera-trap of golden jackal on roe deer and subsequent kleptoparasitism by wild boar in Italy
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