Epidemiological analysis of cattle ticks and tick-borne pathogens in Gadag district, Karnataka state in India
In the present study, epidemiological analysis on 839 ticks collected from 50 cattle in Gadag district, Karnataka state, tick identification and detection of tick-borne pathogens was conducted by PCR, sequencing, and phylogeny. The morphological identification revealed that Haemaphysalis spp. [48.6%...
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Veröffentlicht in: | Journal of parasitic diseases 2023-06, Vol.47 (2), p.387-399 |
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Zusammenfassung: | In the present study, epidemiological analysis on 839 ticks collected from 50 cattle in Gadag district, Karnataka state, tick identification and detection of tick-borne pathogens was conducted by PCR, sequencing, and phylogeny. The morphological identification revealed that
Haemaphysalis
spp. [48.6%],
Rhipicephalus
spp. [48.4%], and
Hyalomma
spp. [3.0%] tick genera in Gadag district. Further, a higher infestation of
Haemaphysalis
spp. [69.0%] and
Rhipicephalus
spp. [62.3%] in Shirahatti and Gadag taluk, respectively was observed. Based on the taluk-wise and tick genus-wise analysis, a higher number of ticks was present in the dewlap region of cattle body sites, except for
Hyalomma
spp., the majority of which was present in the neck. Tick genus prevalence was 45.1, 42.7%, and 12.2 for
Haemaphysalis
spp.,
Rhipicephalus
spp., and
Hyalomma
spp., respectively. The mean tick per cattle was 11.6, 11.0, and 2.5 for
Rhipicephalus
spp.,
Haemaphysalis
spp., and
Hyalomma
spp., respectively. The prevalence of
Anaplasma marginale
,
Babesia
spp., and
Rickettsia rickettsii
was 8.0, 6.4, and 6.4%, respectively in the tick DNA samples and was negative for
Ehrlichia
and
Theileria
spp. The sequencing of the cytochrome oxidase subunit 1 gene revealed the presence of
Haemaphysalis bispinosa
,
Rhipicephalus decoloratus
, and
Rhipicephalus microplus
tick species in the Gadag district. The phylogenetic analysis revealed the tick species have similarities and identity with the isolates from India and neighboring countries. Thus, the study provides knowledge on tick genus distribution and tick-borne pathogens in Gadag district, Karnataka which will help in developing the control and prevention strategies by the policymakers and for profitable dairy farming by farmers. |
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ISSN: | 0971-7196 0975-0703 |
DOI: | 10.1007/s12639-023-01584-9 |