Tick
Orientia tsutsugamuchi is chigger-mite transmitted; Mansonella ozzardi and Oropouche virus are Culicoides-transmitted; Borrelia duttoni is soft-tick (Ornithodoros) transmitted.
TICKS
- General: Arachnids — no antennae, chelicerate mouthparts, body = cephalothorax + abdomen, hemimetabolous (incomplete metamorphosis)
- Genera: Ornithodoros (O. moubata), Argas
- Found in warm areas; nidicolous (stay in host's nest/dwelling)
- Multi-host tick; multiple nymphal stages (N1–N4, usually 4–5 instars)
- Feed briefly (hours) compared to hard ticks
Read this in YEAR 3 PARASITOLOGY NOTES
What our notes say
- Orientia tsutsugamuchi is chigger-mite transmitted; Mansonella ozzardi and Oropouche virus are Culicoides-transmitted; Borrelia duttoni is soft-tick (Ornithodoros) transmitted. (Bacteriology and Entomology Main Exam)
- Q12 and Q13 form a natural pair — hard tick (Ixodes) vs soft tick (Ornithodoros/argasid) pathogen associations are a recurring exam theme. (Bacteriology and Entomology Main Exam)
- Borrelia burgdorferi (Lyme disease) is transmitted by Ixodes ticks; Orientia tsutsugamuchi (scrub typhus) by chigger mites; Mansonella ozzardi by Culicoides midges. (Bacteriology and Entomology Supplementary Exam)
- Ixodid ticks possess a dorsal shield (scutum) that is absent in Argasidae. (Medical Entomology MCQs 2 — Parasitology)
- Arboviruses (Arthropod-Borne Viruses) are a diverse group of viruses transmitted to humans through the bites of arthropod vectors — primarily mosquitoes and ticks. (EXAM: Hepatitis Viruses, Oncogenic Viruses, Paramyxoviruses & Arboviruses)
- Hard ticks have flexible cuticle; soft ticks have rigid cuticle (Medical Entomology MCQs 2 — Parasitology)
Study material on Tick
- Medical Vectors: Ticks, Trypanosomiasis, Leishmaniasis & More
- Medical Entomology Questions
- Medical Entomology Past Paper MCQs
- Medical Entomology MCQs 2
- Medical Entomology MCQs 2 — Parasitology
- Medical Parasitology
- YEAR 3 PARASITOLOGY NOTES
- Bacteriology and Entomology Main Exam
- Medical Entomology & Parasitology Quiz Q&A
- Medical Bacteriology And Parasitology End Year 2024/2025
- Medical Entomology Cat Practice MCQs
- Medical Entomology
- Weekly Year 2: Microbiology Exam - June 12, 2026 (Section A: MCQs)
- Medical Bacteriology and Parasitology End of Year 2024/2025
- Year 3 Medical Parasitology II
- Medical Bacteriology and Parasitology Exam 2024/2025 MCQs
Practice questions on Tick
Argasid ticks have?
- One host
- Two hosts
- Three hosts
- Multiple hosts
- Four hosts
Answer: D. Argasid (soft) ticks feed on multiple hosts, with several nymphal stages. ---
Ixodid ticks have nymphal stages.
- One
- Two
- Three
- Four
- Multiple
Answer: A. Ixodid (hard) ticks have a single nymphal stage. ---
Argasid ticks have?
- One host
- Two hosts
- Three hosts
- Multiple hosts
- Four hosts
Answer: A. Argasid (soft) ticks are multi-host ticks that feed quickly on different hosts throughout their life stages. ---
Ixodid ticks have nymphal stages.
- One
- Two
- Three
- Four
- Multiple
Answer: A. Ixodid (hard) ticks have a single nymphal stage: egg → larva → nymph → adult. ---
Argasid ticks have
- One host
- Two hosts
- Three hosts
- Four hosts
- Multiple hosts
Answer: E. Argasid (soft) ticks are multi-host ticks that can feed on different hosts throughout their life cycle and can take multiple blood meals at each life stage. ---
Ixodid ticks have how many nymphal stages?
- One
- Two
- Three
- Four
- Multiple
Answer: A. Ixodid (hard) ticks have a single nymphal stage in their life cycle: egg → larva → nymph → adult. ---