Elango Ayyanar, Shriram Ananganallur Nagarajan, Raju Hari Kishan, Kumar Ashwani
Division of Vector Biology and Control, Department of Health Research, Ministry of Health & Family Welfare, ICMR-Vector Control Research CentreGOIIndira Nagar, Medical Complex, Puducherry, 605 006, India.
Climate Change, GIS and VBD Stratification/Mapping, Department of Health Research, Ministry of Health & Family Welfare, ICMR-Vector Control Research CentreGOIIndira Nagar, Medical Complex, Puducherry, 605 006, India.
Trop Anim Health Prod. 2024 Feb 10;56(2):73. doi: 10.1007/s11250-024-03912-4.
A survey of Ixodid tick species diversity on domestic ruminants was conducted in seven agro-climatic regions of Tamil Nadu State, India. Tick surveys were conducted on domestic ruminants such as cattle, buffalo, sheep, and goat in seven districts of Tamil Nadu. The overall tick infestation was 38.8%, 5.8%, 14.6%, and 40.8% on cattle, buffaloes, sheep, and goats, respectively. A total of 8068 ticks from 18 species belonging to four genera were recorded. Overall, Haemaphysalis intermedia was the predominant (51.38%) tick species which has a wide host range. The most prevalent tick species in cattle and buffalo were Rhipicephalus (B.) microplus (25.41%) and Rhipicephalus haemaphysaloides (56.69%), respectively. Haemaphysalis intermedia was the most prevalent in ticks in sheep (70.35%), goat (70.35%), and dog (55.79%). In the present study, local anomalies such as the ectromely of one leg and the absence of adanal plates were observed in Rh. haemaphysaloides. The study also found that local anomaly such as protuberances in the hind tarsal and atrophy of the adanal plate was observed in Rhipicephalus (Boophilus) microplus. In addition, a general anomaly with three atrophy caudal appendages was also observed in Rhipicephalus (Boophilus) microplus. The overall prevalence of anomalies in Rh. haemaphysaloides and Rh. (B.) microplus was 0.3% (3/971) and 0.4% (3/678), respectively.
在印度泰米尔纳德邦的七个农业气候区，对家养反刍动物上的硬蜱种类多样性进行了调查。在泰米尔纳德邦的七个区，对牛、水牛、绵羊和山羊等家养反刍动物进行了蜱虫调查。牛、水牛、绵羊和山羊的总体蜱虫感染率分别为38.8%、5.8%、14.6%和40.8%。共记录了来自四个属的18个种类的8068只蜱虫。总体而言，中间血蜱是优势蜱种（51.38%），宿主范围广泛。牛和水牛中最常见的蜱种分别是微小扇头蜱（25.41%）和血红扇头蜱（56.69%）。中间血蜱在绵羊（70.35%）、山羊（70.35%）和狗（55.79%）的蜱虫中最为常见。在本研究中，在血红扇头蜱中观察到了诸如一条腿缺如和肛侧板缺失等局部异常。该研究还发现，微小扇头蜱中观察到了诸如后跗节突出和肛侧板萎缩等局部异常。此外，在微小扇头蜱中还观察到了一种普遍的异常，即尾附器有三处萎缩。血红扇头蜱和微小扇头蜱异常的总体发生率分别为0.3%（3/971）和0.4%（3/678）。
