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1.
Ciênc. rural ; 43(10): 1852-1857, Oct. 2013. tab
Article in English | LILACS | ID: lil-686030

ABSTRACT

We herein describe ticks parasitizing birds in forest fragments along the Uberabinha River, a major watercourse that cuts through patches of remnants of Brazilian savannah in Uberlândia, Minas Gerais, Brazil. Overall 352 birds from 62 species, overwhelmingly, Passeriformes, were captured with mist-nets. The most abundant bird species was Basileuterus hypoleucus (n=36), followed by Lanio penicillata (n=24) and Thalurania furcata (n=23). Thirty one birds, all Passeriformes, were found infested with 56 ticks from which 12 were larvae and 44 nymphs, all from the Amblyomma genus. Highest infestation prevalence was found on Taraba major (66.6%), Thamnophilus pelzeni (60%) and Saltator maximus (50%). The mean intensity of tick infestation was low (1.8 tick per infested bird) with most of the parasites located on the neck (60%) of birds, followed by the head (20%). All larvae were attached to the skin around the eyes of birds. Amblyomma nodosum was the most numerous tick species found attached to birds (n=23 nymphs, 52.3% of nymphs) followed by Amblyomma longirostre (n=5, 11.4% of nymphs). Ecological relationships are discussed.


Descrevemos aqui carrapatos que parasitam aves em fragmentos florestais ao longo do rio Uberabinha, o principal curso de água que corta manchas de remanescentes de Cerrado em Uberlândia, Minas Gerais, Brasil. Ao todo, foram capturadas, com redes de neblina, 352 aves, de 62 espécies, em sua maioria, Passeriformes. As espécies de aves mais abundantes foram Basileuterus hypoleucus com 36 indivíduos, seguido de Lanio penicillata (n=24) e Thalurania furcata (n=23). Trinta e uma aves, todas Passeriformes, estavam infestadas com 56 carrapatos, sendo 12 larvas e 44 ninfas, todos do gênero Amblyomma. A prevalência de infestação mais elevada foi encontrada em Taraba major (66,6%), Thamnophilus pelzeni (60%) e Saltator maximus (50%). A intensidade média de infestação por carrapatos foi baixa (1,8 carrapato por ave infestada) e a maior parte dos parasitas recolhidos estava localizada no pescoço (60%) das aves, seguido pela cabeça (20%). Todas as larvas estavam fixadas à pele ao redor dos olhos das aves. Amblyomma nodosum foi a espécie de carrapato mais numerosa encontrada nas aves (n=23 ninfas, 52,3% das ninfas), seguido de Amblyomma longirostre (n=5, 11,4% das ninfas). Relações ecológicas são discutidas.

2.
Ciênc. rural ; 39(3): 930-932, maio-jun. 2009. ilus
Article in English | LILACS | ID: lil-514066

ABSTRACT

The species Amblyomma longirostre Koch, 1844 is poorly known in the state of Rio Grande do Sul. Usually the adult stage could be found on Sphigurus spp. and the immatures on birds (Passeriformes). Although A. longirostre is distributed in the Neotropical region, from Panama to Uruguay, it also occurs in Central America and the United States. The aim of this study was to report that Ramphastos dicolorus Linnaeus 1766 is a new host record for this tick species.


A espécie Amblyomma longirostre Koch, 1844 é pouco conhecida no Estado do Rio Grande do Sul. Normalmente a fase adulta pode ser encontrada em porquinhos Sphigurus spp., e as fases imaturas podem ser encontradas em aves (Passeriformes). A. longirostre distribui-se na região neotropical, do Panamá ao Uruguai. Ela também ocorre na América Central e nos Estados Unidos. Este estudo tem como objetivo relatar que Ramphastos dicolorus Linnaeus 1766 é um novo hospedeiro dessa espécie de carrapato.

3.
Arq. bras. med. vet. zootec ; 60(3): 772-774, jun. 2008. ilus
Article in Portuguese | LILACS | ID: lil-487929

ABSTRACT

Chaetomys subspinosus (Olfers, 1818) or bristle-spined porcupine is a species of rodent restricted to the Atlantic Forest of the Eastern Coast of Brazil, vulnerable to extinction. Four specimens captured in the State of Espírito Santo, at the Biological Station of Santa Lúcia (EBSL) and at the State Park Paulo César Vinha (PEPCV), were examined for the presence of ectoparasites. One female and three males of Amblyomma longirostre were collected from a single C. subspinosus female in three independent captures carried out in 2004 at the EBSL. No ticks were found on bristle-spined specimens from the PEPCV. This constitutes the first report of A. longirostre infesting this rodent species in the State of Espírito Santo and reinforces that these mammals from the family Erethizontidae act as hosts for adults stages of this ixodic tick species.


Subject(s)
Animals , Epidemiology , Hedgehogs/parasitology , Parasitic Diseases , Ticks
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