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- Title
Notes on Population Dynamics of Amblyomma Ticks (Acari: Ixodidae) in Brazil.
- Authors
Labruna, M. B.; Terassini, F. A.; Camargo, L. M. A.
- Abstract
Previous population dynamics data, generated for Amblyomma parvum Aragão and Amblyomma cajennense (Fabricius) in Argentina and southeastern Brazil, have indicated that these ticks complete 1 generation per year, with larvae predominating in autumn, nymphs in winter, and mostly adults during spring and summer. The present study reports population dynamics data for free-living Amblyomma spp. ticks in northern Brazil (Amazon forest, latitude 10ãS, 63°W), and for Amblyomma spp. ticks collected on birds in southeastern Brazil (latitude 23°S, 45°W). In northern Brazil, adult ticks predominated from mid-spring to mid-autumn, larvae predominated in early winter, and nymphs from mid-winter to mid-spring. Seven Amblyomma spp. were identified, although A. cajennense predominated in 1 of the 2 sites sampled. In southeastern Brazil, larval infestations on birds peaked in autumn, followed by a nymphal infestation peak in late winter. At least 32% and 75% of these larvae and nymphs, respectively, were identified as Amblyomma longirostre (Koch). Similar to previous work, the present study showed that Amblyomma spp. larvae and nymphs predominated during autumn-winter months, and mostly adults during spring-summer months, a pattern compatible with 1 generation/yr, even at latitude 10°S in northern Brazil.
- Subjects
BRAZIL; AMBLYOMMA; IXODIDAE; TICKS; HOST-parasite relationships; PARASITISM
- Publication
Journal of Parasitology, 2009, Vol 95, Issue 4, p1016
- ISSN
0022-3395
- Publication type
Article
- DOI
10.1645/GE-1878.1