Population dynamics of the cattle tick Rhipicephalus (Boophilus) microplus in a subtropical subhumid region of Argentina for use in the design of control strategies.

CANEVARI JT, MANGOLD AJ, GUGLIELMONE AA, NAVA S.

MEDICAL AND VETERINARY ENTOMOLOGY

WILEY-BLACKWELL PUBLISHING, INC

Lugar: Londres; Año: 2017 vol. 31 p. 6 - 14

0269-283X

The population dynamics of Rhipicephalus microplus (Ixodida: Ixodidae)in northwest Argentina was analysed to support the design of strategic methods for itscontrol. Both parasitic and non-parasitic phases were studied. The seasonal activity ofR. microplus in its parasitic phase was characterized by three peaks in abundance: thefirst in mid?late spring; the second in summer, and the third in autumn. The non-parasiticphase of R. microplus was characterized by a long total non-parasitic period observedafter exposures of females from mid-summer to early autumn, a short total non-parasiticperiod observed after exposures of females from late winter to late spring, a short periodof larval longevity in early and mid-summer, and no hatch of the eggs produced byfemales exposed in mid- and late autumn and winter. Treatments of cattle administeredduring the period from late winter to late spring will act on small cohorts of R. microplus,preventing the emergence of larger generations in summer and autumn. A 17-weekspelling period starting in late spring and early summer will be necessary to achieveoptimal control of R. microplus free-living larvae. If spelling begins in mid- or latesummer or in autumn, the required period will be 26?27weeks.