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Martello E.,University of Turin | Mannelli A.,University of Turin | Ragagli C.,Ufficio Territoriale per la Biodiversita | Ambrogi C.,Ufficio Territoriale per la Biodiversita | And 3 more authors.
Ticks and Tick-borne Diseases | Year: 2014

Immature ticks (Ixodes ricinus and Dermacentor marginatus) were collected from small rodents (. Apodemus spp. and Myodes glareolus), in the Northern Apennines, Italy, at an altitude up to 1650. m above sea level (a.s.l.), from 2009 through 2012. While D. marginatus had been found at the same location in studies carried out in 1994, I. ricinus was very rare or absent. Prevalence (95% confidence interval) of infestation by I. ricinus larvae on Apodemus spp. was 54.4% (47.5, 61.2), and it was greater than prevalence of D. marginatus larvae on the same hosts (23.3%, 17.8, 29.5). The mean (standard deviation) numbers of I. ricinus and D. marginatus larvae per individual Apodemus spp. were similar: 2.3 (4.1) and 2.1 (9.8), respectively. The monthly infestation pattern of the two tick species on Apodemus spp. were different. I. ricinus larvae were more frequent in June and September, than in July-August. I. ricinus nymphs were generally rare, and were most frequently found in July. The prevalence of D. marginatus larvae peaked in July-August, whereas nymphs were mostly active in August-September. Increasing population densities of roe deer (. Capreolus capreolus), and increasing temperatures, in the last decades, in the Apennine area might have contributed to the observed range expansion of I. ricinus. © 2014 Elsevier GmbH. Source


Ardenghi N.M.G.,University of Pavia | Galasso G.,Sezione di Botanica | Banfi E.,Sezione di Botanica | Zoccola A.,Ufficio Territoriale per la Biodiversita | And 2 more authors.
Phytotaxa | Year: 2014

As resulted from recent floristic investigations conducted in southern and central Europe, the genus Vitis proved to be, in these areas, an intricate critical group, whose interpretation, often influenced by ampelographic approaches, needed to be clarified in a strict taxonomic sense. The current paper analyzes the taxonomy and the distribution of seven taxa recorded in Italy and assigns new names to three nothospecies, naturalized and/or invasive in additional European countries: V. ×instabilis (= V. riparia × V. rupestris), V. ×koberi (= V. berlandieri × V. riparia), V. ×ruggerii (= V. berlandieri × V. rupestris). Nomenclatural and systematic aspects regarding V. vinifera are also discussed. Original and detailed descriptions, identification keys, illustrations and information on distribution and ecology are provided. © 2014 Magnolia Press. Source


Martello E.,University of Turin | Selmi M.,Osservatorio Permanente per Patologie a trasmissione Vettoriale | Ragagli C.,Ufficio Territoriale per la Biodiversita | Ambrogi C.,Ufficio Territoriale per la Biodiversita | And 3 more authors.
Ticks and Tick-borne Diseases | Year: 2013

Immature Dermacentor marginatus ticks and tissues from small rodents were tested for infection with Rickettsia slovaca in the northern Apennines, Lucca Province, where tick-borne lymphadenopathy (TIBOLA) was previously reported in people. Prevalence of infestation with D. marginatus was 30.5% (n= 131, 95% CI: 22.8-39.2%) in Apodemus spp. and 26.5% (n= 34, 95% CI: 12.9-44.4%) in Myodes glareolus, which were captured during 1980 trap nights in 2009 and 2010. Rickettsia slovaca was identified by polymerase chain reaction, targeting the gltA and OmpA genes, in ear biopsies from 8 out of 37 tested Apodemus (22%, 95% CI: 9.8-38.2%), but not from 9 M. glareolus. The prevalence of R. slovaca in D. marginatus feeding on Apodemus spp. was 53% in larvae (n= 51, 95% CI: 38.5-67.1%) and 47.5% in nymphs (n= 59, 95% CI: 34.3-60.9%). No larvae (0.0%, 95% CI: 0-36.9%), but one nymph removed from M. glareolus was positive (10%, 95% CI: 0.3-44.5%). Prevalence of R. slovaca in host-seeking D. marginatus larvae, collected in the same area, was 42% (n= 38; 95% CI: 26.3-59.2%). Prevalence of R. slovaca was greater in larvae feeding on PCR-positive Apodemus than in those feeding on negative mice (78.6% vs. 37.1%). Furthermore, levels of infestation with D. marginatus larvae were greater for R. slovaca-positive mice. The infection of Apodemus spp. was probably the result of repeated bites by transovarially infected larvae. On the other hand, the finding of R. slovaca in mice tissues would be compatible with transmission from these hosts to feeding D. marginatus. Based on such a hypothesis, the most heavily infested Apodemus might play a role as amplifiers of the infection. © 2013 Elsevier GmbH. Source


Ragagli C.,Ufficio Territoriale per la Biodiversita | Mannelli A.,University of Turin | Ambrogi C.,Ufficio Territoriale per la Biodiversita | Bisanzio D.,University of Oxford | And 5 more authors.
Experimental and Applied Acarology | Year: 2016

Host-seeking ticks were collected in the Northern Apennines, Italy, by dragging at 35 sites, at altitudes ranging from 680 and 1670 m above sea level (asl), from April to November, in 2010 and 2011. Ixodes ricinus (4431 larvae, 597 nymphs and 12 adults) and Haemaphysalis punctata (11,209 larvae, 313 nymphs, and 25 adults) were the most abundant species, followed by Haemaphysalis sulcata (20 larvae, five nymphs, and 13 adults), Dermacentor marginatus (42 larvae and two adults) and Ixodes hexagonus (one nymph). Greatest numbers of ticks were collected at locations characterised by southern exposure and limestone substratum, at altitudes <1400 m asl; I. ricinus was most abundant in Turkey oak (Quercus cerris) wood, whereas H. punctata was mostly collected in hop hornbeam (Ostrya carpinifolia) wood and on exposed rocks. Ixodes ricinus was also found up to 1670 m asl, in high stand beech (Fagus sylvatica) wood. The overall prevalence of Borrelia burgdorferi sensu lato (sl) in 294 host-seeking I. ricinus nymphs was 8.5 %. Borrelia garinii was the most frequently identified genospecies (64.0 % of positive nymphs), followed by B. valaisiana, B. burgdorferi sensu stricto, B. afzelii, and B. lusitaniae. Based upon the comparison with the results of previous studies at the same location, these research findings suggest the recent invasion of the study area by the tick vector and the agents of Lyme borreliosis. © 2016 Springer International Publishing Switzerland Source

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