Ticks- Introduction (Nov. 5)

Ticks- Introduction (Nov. 5) - Ticks:Introduction...

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Ticks: Introduction Ixodida phylogeny o Ixodida (Order or Suborder) Ixodidae Hard ticks 683 species Argasidae Soft ticks 183 species Nuttalliellidae African tick 1 species Tick Importance o All ticks are obligatory parasites o Transmit a greater variety of infectious agents than any other arthropod o Second most important vectors for animals and human health (behind mosquitoes) Anatomy o Key features for ID: Hypostome (and dentition) Coxa (and spurs) Anal groove vs. festoons Ixodes o Largest tick genus o 241 species o Distinctive anal groove o Worldwide distribution including Antarctica
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Unformatted text preview: Dermacentor o 33 species o Basis capituli appear rectangular (short palps) o Scutum ornamented o 3 host tick (but winter tick is one host tick) Amblyomma o Long palps o Scutum ornamented o Wide host range Otobius o Feed on livestock and other large hosts o Adults leave host, don’t feed mate, and lay eggs o Not known to transmir agents of disease Tick life stages o Eggs o Larvae o Nymph o Adult Tick life cycle o About 2 years for Ixodes scapularis...
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  • Fall '07
  • Bay
  • Acari, Ixodidae, o Nymph, African tick, Anal groove, winter tick

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