ABSTRACT
O encontro de Haemaphysalis juxtakochi Cooley, um carrapato ixodídeo, no veado bororó-do-sul, Mazama nana (Hensel), representa novo relato de ocorrência, após 34 anos de seu registro no Estado do Rio Grande do Sul. Os exemplares de carrapatos (3 machos e 1 fêmea) foram encontrados em Cachoeira do Sul, RS (30º02’21"S, 52º53’38"W). O local está a 72 m acima do nível do mar, com uma média anual de temperatura de 18,8°C, e uma precipitação média anual de 1.438 mm. Este é o primeiro registro de H. juxtakochi nesta espécie de cervídeo e um segundo relato de ocorrência para o Estado do Rio Grande do Sul.
The record of Haemaphysalis juxtakochi Cooley, an ixodid tick, on the brocket deer, Mazama nana (Hensel), represents a new report after 34 years of its last report in the State of Rio Grande do Sul. The tick specimens (three males and one female) were found in Cachoeira do Sul, RS (30º02’21"S, 52º53’38"W). This place is elevated 72 m sea above, with an annual average temperature of 18.8°C, and annual average rainfall of 1.438 mm. This is the first record of this tick species in a Cervidae and it is the second occurrence report for the State of Rio Grande do Sul.
Subject(s)
Animals , Deer/parasitology , Ixodidae/physiology , Brazil , Ixodidae/anatomy & histology , Microscopy, ElectronABSTRACT
Ticks infesting humans were collected from September 2004 to August 2005 in Northwestern Córdoba in an area with a southern limit in the locality of Dean Funes (30°25´S 64°20´W) and San José de las Salinas (30°00´S 64°37´W) in the North. The collections consisted in ticks found attached on man obtained from three sources: 1) specimens fixed on two workers during two successive days per month of field work in the northern part of the area which belongs to Western Chaco district of the hytogeographical Chaco domain, 2) ticks attached to a man working in a farm close to Dean Funes in the Chaco Serrano district of the Chaco domain and, 3) ticks collected from a collaborator visiting daily a suburban property with dogs in the vicinities ofDean Funes. Most ticks collected were larvae, nymphs and adults of Amblyomma neumanni from the Chaco Serrano district where a nymph of Otobius megnini was also found on man. Adults of Amblyomma parvum and Amblyomma tigrinum were detected feeding on humans in the Western Chaco district and in the property close to Dean Funes, respectively. Amblyomma neumanni was absent on man from December to April while most specimens of A. parvum and A. tigrinum were collected during summer. Their role as potential vector of ticktransmitted diseases in the area is unknown.
Se recolectaron garrapatas (Acari: Ixodida: Argasidae, Ixodidae)infestando humanos entre septiembre de 2004 y agosto de 2005 en un área del noroeste de Córdoba cuyo límite al sur es la localidad Deán Funes (30º25´S 64°20´W) y el límite al norte es la localidad de San José de las Salinas (30°00´S 64°37´W). Las colecciones consistieron en garrapatas fijadas a humanos obtenidas de tres fuentes: 1) garrapatas fijadas sobre dos trabajadores durante dos días sucesivos por mes de trabajo de campo en la parte norte del área, la cual pertenece al distrito chaqueño occidental del dominio fitogeográfico del Chaco, 2) garrapatas fijadas a un trabajador en un campo cercano a Deán Funes en el distrito chaqueño serrano del dominio del Chaco y 3) garrapatas recolectadas de un colaborador que visitaba diariamente una propiedad suburbana con perros en las vecindades de Deán Funes. La mayoría de las garrapatas recolectadas fueron larvas, ninfas y adultos de Amblyomma neumanni del distrito chaqueño serrano donde una ninfa de Otobius megnini fue también encontrada sobre humano. Adultos de Amblyomma parvum y Amblyomma tigrinum se detectaron alimentándose sobre humanos en el distrito Chaqueño occidental y en la propiedad cercana a Deán Funes respectivamente. Amblyomma neumanni estuvo ausente sobre humano de diciembre a abril mientras que la mayoría de lo especímenes de A. parvum y A. tigrinum fueron recolectados durante el verano. Sus papeles como potenciales vectores de enfermedades transmitidas por garrapatas en el área es desconocido.
Subject(s)
Humans , Animals , Male , Female , Dogs , Argasidae/physiology , Ixodidae/physiology , Tick Infestations/parasitology , Argentina , Argasidae/classification , Ixodidae/classification , Population Density , SeasonsABSTRACT
Information on autochthonous ticks and their hosts is scarce in South America, especially in Argentina. To contribute to tick knowledge in the region, 2094 ticks were collected from the vegetation, humans, domestic and wild animals at a host-and-tick rich area of northern Argentina during six field trips conducted in 1999 (January and August), 2000 (March and November), and 2001 (March and June). The ticks were identified as Amblyomma cajennense (Fabricius), Amblyomma coelebs Neumann, Amblyomma sp., Haemaphysalis juxtakochi Cooley, H. leporispalustris (Packard), Ixodes pararicinus Keirans & Clifford, I. loricatus Neumann, I. longiscutatum Boero and Ixodes sp. Small mammals were mainly parasitized by immature stages of Ixodes; humans and domestic animals, predominantly by Amblyomma spp., and birds, mainly by nymphs and larvae of Haemaphysalis spp.
Informações sobre carrapatos autóctones e seus hospedeiros são escassas na América do Sul, especialmente para a Argentina. Com o objetivo de contribuir para o conhecimento dos carrapatos na região, 2094 carrapatos foram coletados da vegetação, de humanos e de animais domésticos e selvagens numa área no norte da Argentina rica em carrapatos e hospedeiros, durante seis viagens de campo conduzidas em 1999 (janeiro e agosto), 2000 (março e novembro) e 2001 (março e junho). Os carrapatos foram identificados como Amblyomma cajennense (Fabricius), A. coelebs Neumann, Amblyomma sp., Haemaphysalis juxtakochi Cooley, H. leporispalustris (Packard), Ixodes pararicinus Keirans & Clifford, I. loricatus Neumann, I. longiscutatum Boero e Ixodes sp. Pequenos mamíferos foram principalmente parasitados por estágios imaturos de Ixodes; humanos e animais domésticos, predominantemente por Amblyomma spp., e pássaros, principalmente por ninfas e larvas de Haemaphysalis spp.
ABSTRACT
Se informa por primera vez la presencia de Amblyomma longirostre en Uruguay. Se encontraron ninfas de esta especie en un ave (Phylloscartes ventralis) de una localidad en que habita un roedor potencial huésped para esta garrapata adulta, por lo que se concluye que es probable que ella sea residente en el país. Para la garrapata esta ubicación geográfica sería la más austral descrita.
Subject(s)
Animals , Nymph , Ticks , Birds , Host-Parasite Interactions , UruguayABSTRACT
Attacks by adult stages of the soft tick Argas (Argas) neghmei (Acari:Argasidae) on inhabitants of the High Andean plateau of Argentina are reported . This is the first local report of this species, which was previously found in the north of Chile. Taxonomic differences between A (A.) neghmei and other neotropical and exotic species of the genus are underlined. The status of the knowledge about the Argentine argasid fauna is briefly described.
Subject(s)
Animals , Ticks/classification , Ticks/pathogenicity , ArgentinaABSTRACT
Studies were carried out to determine the differential aptitude to sustain the only vector of cattle babesiosis in Argentina, the tick Boophilus microplus, throughout the infested region of this country. Tick counts on Bos taurus cattle were used as the main criterion to classify favourable (F), intermediate (I) and unfavourable (U) areas for its development. The geographical limits of each area set up using data of non-parasitic tick stages, temperature, water balance and map recognition of flooded and unflooded zones. The F area contained 16.5 x 10 (elevado a sexta potência) ha with a cattle population of 6 x 10 (elevado a sexta potência); the I and U areas had 25 x 10 (elevado a sexta potência ha with 2.7 x 10 (elevado a sexta potência) cattle and 198 x 10 (elevado a sexta potência) with population of 2.4 x 10(elevado a sexta potência) cattle, respectively. Research on the relationship amongst Babesia-Boophilus-cattle is needed in the F area for tick development which coincides with the best region for cattle breeding