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OJVRTM
Online Journal of Veterinary
Research©
Volume 23 (3):185-189, 2019.
Prevalence
of ixodid ticks in cows, buffalo, goats and sheep in
coastal areas of Tamil Nadu, India.
A Varadharajan*, R Gnanasekar, S Kothandaraman and L
Murali Krishnan.
Division
of Animal Husbandry, Faculty of Agriculture, Annamalai
University, Annamalai Nagar – 608 002, Tamil Nadu,
India.
ABSTRACT
Varadharajan A, Gnanasekar R, Kothandaraman
S, Murali Krishnan L., Prevalence of ixodid ticks in cows, buffalo, goats and sheep in coastal
areas of Tamil Nadu, India, Onl J Vet Res., 23 (3):185-189, 2019. Authors
report prevalence of Ixodid ticks on 288 cows, 120
buffaloes, 432 goats and 120 sheep in coastal areas of Tamil Nadu, India. The ruminants
were grazed 5-8h per day and 12 collections of ticks from ears, tails, trunk
and legs were done from October 2016 to September 2017. Ticks were preserved in
chloroform and formalin, washed with distilled water treated with KOH and
boiled until transparent for identification by keys (Krantz
1940; Sen 1938; Geevarghese et al., 1997), under stereo-zoom microscope. Of 920 animals, 520
were infested with a prevalence of ~54% mostly on sheep (70%) and least on
buffalo (~42%). Hyalomma spp were
identified in 15.3% followed by Rhiphicephalus haemophysaloides in 12.9%, Haemaphysalis
bispinosa in 10% and
Rhipicephalus sanguineus in 9.6%. Infestation was more frequent in
summer (78.12%) compared with winter (49.68%) or the rain season (34.68%).
Key words: Epidemiology; Ixodid
ticks; ruminants; Tamil Nadu, India.