ISSN 1362-1971
An international journal of the Systematic and Applied Acarology Society, published since 1996
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ISSN 1362-1971 An international journal of the Systematic and Applied Acarology Society, published since 1996 [Aims] [Editors] [Content] [Subscriptions] [Contact details] [Society Homepage] |
Systematic & Applied Acarology
(2008) 13, 102–108.Hosts and distribution of Ixodes longiscutatus Boero, 1944 (Acari: Ixodidae)
JOSÉ M. VENZAL1, SANTIAGO NAVA2, PABLO M. BELDOMÉNICO3, DARCI MORAES BARROS-BATTESTI4, AGUSTÍN ESTRADA-PEÑA5 & ALBERTO A. GUGLIELMONE2
1
Departamento de Parasitología Veterinaria, Facultad de Veterinaria, Universidad de la República, Regional Norte - Sede Salto, Rivera 1350, CP 50000 Salto, Uruguay. E-mail: dpvuru@adinet.com.uy2
Instituto Nacional de Tecnología Agropecuaria, Estación Experimental Agropecuaria Rafaela, CC 22, CP 2300 Rafaela, Santa Fe, Argentina3
Facultad de Ciencias Veterinarias, Universidad Nacional del Litoral, Esperanza, Santa Fe, Argentina4
Laboratório de Parasitologia, Instituto Butantan, Av. Vital Brasil 1500 05503-900 São Paulo SP, Brazil5
Departamento de Patología Animal, Facultad de Veterinaria, Universidad de Zaragoza, Miguel Servet, 177. 50013 Zaragoza, SpainAbstract
Specimens of Ixodes longiscutatus Boero, 1944 (Ixodidae) were collected in Uruguay and, to a lesser extent, Argentina from 1998 to 2004. Specimen data and literature records were used to compile a comprehensive list of hosts and to define the ecological parameters of this tick species, which is currently known from a total of only 6 females, 37 nymphs and 94 larvae. The male remains undescribed. Bona fide records of females were from cattle, horse, Cavia tschudii Fitzinger, 1857 and Cavia sp. (Rodentia: Caviidae). Most nymphs were collected on rodents of the family Cricetidae, especially Oxymycterus nasutus (Waterhouse, 1837) and Scapteromys tumidus (Waterhouse, 1837), but also C. tschudii. Again, most larvae were found on cricetid rodents, namely O. nasutus, S. tumidus, Akodon lutescens Allen, 1901, Oligoryzomys flavescens (Waterhouse, 1837) and Necromys obscurus (Waterhouse, 1837), and on Caviidae (Cavia aperea Erxleben, 1777 and C. tschudii). Both larvae and nymphs were found on hosts during all seasons of the year, with a higher prevalence in summer. Two allopatric populations of I. longiscutatus appear to exist, one in Uruguay and neighboring provinces of Argentina (Buenos Aires and Entre Ríos), the other in northwestern Argentina (Salta Province); DNA analysis may confirm their conspecificity. Scanning electron photomicrographs of the capituli of larvae and nymphs, as well as the posterior setae of the nymphal idiosoma, are provided.
Key words: Ixodes longiscutatus, Ixodidae, hosts, Uruguay, Argentina
References
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Accepted by Richard G. Robbins: 22 May 2008
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Last updated 15 July 2008
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