soft tick การใช้

• The life stages of soft ticks are not readily distinguishable.
• Fossil and phylogenetic data places the hard tick-soft tick divergence between and.
• Soft ticks of the family Argasidae lack the hard scutum or shield present in hard ticks of the family Ixodidae.
• ASF is a highly contagious viral disease infecting domestic pigs, warthogs and bush pigs, as well as soft ticks.
• Strains of this species have been isolated from the soft tick " Ornithodoros coriaceus " and from mule deer.
• The paralysis inflicted by soft ticks might be seen as influencing behaviour, preventing the host from wandering away while they feed.
• Unlike hard ticks, many soft ticks go through multiple nymphal stages, gradually increasing in size until the final molt to the adult stage.
• These ticks are considered soft ticks, because of their subterminal nymphs ( juvenile ticks with a full complement of legs ) and adult ticks.
• ASFV infects domestic pigs, warthogs and bushpigs, as well as soft ticks ( " Ornithodoros " ), which likely act as a vector.
• Almost all ticks belong to one of two major families, the Ixodidae or hard ticks, which are difficult to crush, and the Argasidae or soft ticks.
• The soft tick " Otobius megnini ", the spinose ear tick, has its nymphs feeding within the ear canal of many species of domestic animals.
• ""'Ornithodoros savignyi " "'( soft tick with a leathery, mammillated integument, causing paralysis and tampan toxicosis, two unrelated conditions.
• They are distinguished from the other main family of ticks, the "'soft ticks "'( Argasidae ) by the presence of a scutum or hard shield.
• As well as having a hard shield on their dorsal surfaces, hard ticks have a beak-like structure at the front containing the mouthparts whereas soft ticks have their mouthparts on the underside of the body.
• The virus causes a haemorrhagic fever with high mortality rates in pigs, but persistently infects its natural hosts, warthogs, bushpigs, and soft ticks of the " Ornithodoros " genus, with no disease signs.