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Revision as of 21:54, 18 May 2010
<ncl style=bullet maxdepth=3 headings=bullet headstart=2
showcats=1 showarts=1>Category:Ticks</ncl>
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Introduction
Ticks (Suborder: Metastigmata) Ticks are ectoparasites which live by haematophagy on the blood of mammals, birds and sometimes reptiles and amphibians. Ticks are of considerable veterinary importance, particularly in warmer climates where they can cause substantial economic losses through decreased productivity and most importantly by disease transmission. They are also important in human medicine as they cause Lyme Disease (borreliosis) and tick-borne encephalitis/meningoencephalitis.
Ticks decrease productivity by causing fleece and hide damage, preventing animals from feeding (tick worry), ascending motor paralysis and anaemia. Infestation can also lead to secondary infection from blowfly and screw worms leading to strike.
The soft ticks are only of importance in warmer climates, whereas the hard ticks cause significant problems in both warmer and temperate climates.
Tick Morphology
Tick Life Cycle
Disease transmission
- Trans-ovarian transmission
- Infection is passed from one generation of ticks to the next through the egg
- E.g. Babesia
- Trans-stadial transmission
- Parasite or microbial organism is ingested during feeding
- Organism passed onto the next host as the tick develops (only in two and three host ticks)
- It is not passed onto the next generation through the egg
Subcategories
This category has the following 3 subcategories, out of 3 total.
Pages in category "Ticks"
The following 5 pages are in this category, out of 5 total.