Ticks parasitizing dogs in an insular area of Rio de Janeiro, RJ, Brazil

ABSTRACT. Luz H.R., Mathias C. & Faccini J.L.H. [Ticks parasitizing dogs in an insular area of Rio de Janeiro, RJ, Brazil.] Carrapatos parasitando cães em uma área insular do Estado do Rio de Janeiro, RJ, Brasil. Revista Brasileira de Medicina Veterinária, 36(4):437-442, 2014. Curso de Pós-Graduação em Ciências Veterinárias, Instituto de Veterinária, Anexo 1, Universidade Federal Rural do Rio de Janeiro, Campus Seropédica, BR 465 Km 7, Seropédica, RJ 23897-970, Brasil. E-mail: [email protected] The navy training center (CADIM) at the sandbank of Marambaia, about 40 km long and approximately 49.4km2, is located in the Municipality of Mangaratiba, RJ. Here we present for the first time information on parasitism by ticks in dogs in an insular area of the state of Rio de Janeiro. Dogs in two different areas were examined from April/2013 to January 2014. Overall, 15 (PI=39 %) out of 38 dogs examined were parasitized. We collected 85 ticks (IMP 5.6 / dog) in the stages of adult (30FF and 20MM) and nymphs (35NN). We identified three species of ticks: R. sanguineus , A. aureolatum and A. sculptum . R. sanguineus was the most common tick collected in nine ( PI=60 % and = 5.3 IMP) dogs followed by A. aureolatum collected in six dogs ( PI=40 % / IMP=1.4 ) and A . sculptum collected in five dogs ( PI=33 % / IMP=3.2 ). We captured 118 free living ticks: 15 larvae identified as Amblyomma sp., and 41 nymphs and 62 adults identified as A. sculptum from which 26 ticks were collected wandering on the collectors

Preliminary investigations on transmission and life cycle of the ear mites of the genus Raillietia trouessart (Acari: Gamasida) parasites of cattle

The life cycle of ear mites of the genus Raillietia Trouessart consists of egg, larva, proto-and deutonymph and adult. The proto-and deutonymph are free living, non feeding instars. The teneral adult is the transfer stage. The minimum period required for completion of the life cycle is approximately eight days

Patterns of parasitism by Amblyomma rotundatum (Ixodidae) on Rhinella schneideri (Bufonidae) in islands of São Francisco River, Minas Gerais, Brazil

Abstract: We sampled ticks from specimens of the rococo toad Rhinella schneideriby flannel dragging on two Islands located in the São Francisco River near the Três Marias hydroelectric dam, southeastern Brazil. A total of 120 toads was examined, of which 63 (52.5%) were parasitized only by Amblyomma rotundatumtotaling 96 larvae, 163 nymphs and 134 females. The burden of parasitism ranged from one to 43 ticks, with a mean intensity of infestation of 6.2±5.5 ticks per host. The tick A. rotundatumexhibited highly aggregated distribution. Peak abundance of larvae and nymphs occurred in the dry season (May to September), whereas peak abundance of females occurred in the wet season (October to April). We collected most ticks near the head and hind limbs of R. schneideri. The finding of two engorged A. rotundatumnymphs in the same resting places of two toads and the absence of this species in the dragged areas suggest a nidicolous behavior at the studied site

Brazilian Distribution of Amblyomma varium Koch, 1844 (Acari: Ixodidae), a Common Parasite of Sloths (Mammalia: Xenarthra)

Amblyomma varium   , commonly known in Brazil as the "carrapato-gigante-da-preguiça" (sloth's giant tick) is found from southern Central America to Argentina. The present study adds information on the geographical distribution of A. varium, as well as on their hosts, based on material deposited in the main Brazilian collections and on the available literature. Eighty-two vials, containing 191 adult specimens, deposited in five Acari collections between 1930 and 2001, were examined. These vials included data on the host and collection localities. The biology of A. varium is unknown. However it is known that, during the adult stage, the tick presents a high host specificity and is found almost exclusively on the sloths Bradypus tridactylus   , B. variegatus, B. torquatus (Bradypodidae), Choloepus hoffmanni   and C. didactylus (Megalonychidae). Based on the material examined, the states of Rondônia, Amazonas, Bahia and Alagoas are newly assigned to geographic distribution of A. varium in Brazil

First report of Haematobia irritans (L.) (Diptera: Muscidae) as vector of Dermatobia hominis (L.jr.) (Diptera: Cuterebridae) in Minas Gerais, Brazil

Biological transmission of eggs and larvae of the human bot fly Dermatobia hominis by a female of the horn fly Haematobia irritans is reported for the first time in South America. Seventeen females of H. irritans were collected near the municipality of Morada Nova (19S, 45W) in the Três Marias, region of northwestern Minas Gerais in June 1993 and sent to the Entomology Laboratory, Dept. of Prevention Veterinary Medicine, Veterinary School of the Federal University of Minas Gerais for identification based on the keys of B Greenberg

Ticks parasitizing wild mammals in Atlantic Forest areas in the state of Rio de Janeiro, Brazil

Submitted by Sandra Infurna ([email protected]) on 2019-01-22T11:25:00Z No. of bitstreams: 1 rosana_gentile_etal_IOC_2018.pdf: 906162 bytes, checksum: 05fde7f4dd4f92f8edb3d306fd3de86f (MD5)Approved for entry into archive by Sandra Infurna ([email protected]) on 2019-01-22T11:35:50Z (GMT) No. of bitstreams: 1 rosana_gentile_etal_IOC_2018.pdf: 906162 bytes, checksum: 05fde7f4dd4f92f8edb3d306fd3de86f (MD5)Made available in DSpace on 2019-01-22T11:35:50Z (GMT). No. of bitstreams: 1 rosana_gentile_etal_IOC_2018.pdf: 906162 bytes, checksum: 05fde7f4dd4f92f8edb3d306fd3de86f (MD5) Previous issue date: 2018Universidade de São Paulo. Escola de Medicina Veterinária e Ciência Animal. Departamento de Medicina Veterinária Preventiva e Saúde Animal.. São Paulo, SP, Brasil.Fundação Oswaldo Cruz. Instituto Oswaldo Cruz. Programa de Pós-graduação em Biodiversidade e Saúde. Rio de Janeiro, RJ. Brasil / Fundação Oswaldo Cruz. Instituto Oswaldo Cruz. Laboratório de Biologia e Parasitologia de Mamíferos Silvestres. Rio de Janeiro, RJ, Brasil.Universidade Federal do Rio de Janeiro. Museu Nacional. Departamento de Vertebrados. Rio de Janeiro, RJ, Brasil.Fundação Oswaldo Cruz. Instituto Oswaldo Cruz. Laboratório de Biologia e Parasitologia de Mamíferos Silvestres. Rio de Janeiro, RJ, Brasil.Universidade Federal Rural do Rio de Janeiro. Departamento de Parasitologia Animal. Seropédica, RJ, Brasil.Mamíferos capturados no Parque Nacional da Serra dos Órgãos (PARNASO) e no Parque Estadual Pedra Branca (PBSP) entre 2012 e 2015 foram examinados quanto à presença de carrapatos. No total, 140 mamíferos foram examinados, e 34 espécimes foram parasitados por carrapatos. Didelphis aurita, Akodon montensis e Oligoryzomys nigripes foram as espécies mais parasitadas. A partir desses espécimes, 146 carrapatos foram coletados, incluindo 10 larvas. Os carrapatos pertenciam a oito espécies: uma no gênero Ixodes e sete no gênero Amblyomma. Este estudo relata novas associações de carrapatos e mamíferos silvestres no Brasil.Mammals captured in the Serra dos Órgãos National Park (PARNASO) and the Pedra Branca State Park (PBSP) between 2012 and 2015 were examined for the presence of ticks. In total, 140 mammals were examined, and 34 specimens were found to be parasitized by ticks. Didelphis aurita, Akodon montensis and Oligoryzomys nigripes were the species most parasitized. From these specimens, 146 ticks were collected, including 10 larvae. The ticks belonged to eight species: one in the genus Ixodes and seven in the genus Amblyomma. This study reports new associations of ticks and wild mammals in Brazil