ENTO 208 1st Edition Lecture 18 Beginning of Notes for Exam 3Outline of Lecture 18TicksI. Phylogeny II. ImportanceIII. Anatomy IV. GeneraV. Tick life stagesCurrent LectureIntro to TicksI. Phylogeny a. Ixodida (order/suborder) i. Families: Ixodidae (hard ticks), Argasidae (soft ticks), Nuttalliellidae (African ticks)II. Importancea. All ticks are parasitesb. Greatest variety of disease transimittance among arthropodsc. Second most important animal/human health vectorIII. Anatomy (main parts for Tick ID)a. Hypostome (and dentition)b. Coxa (and spurs)c. Anal groove vs. festoons (wrinkles located on posterior)d. Male vs. Female for soft ticksi. Scutum: covers upper half of dorsal side for females, covers entire dorsal side formalesIV. Generaa. Ixodesi. Lyme disease vectorii. Largest tick genus speciesiii. Distinctive anal grooveiv. Worldwide distributionb. Dermacentori. Short palps (basis capituli appear rectangular)These notes represent a detailed interpretation of the professor’s lecture. GradeBuddy is best used as a supplement to your own notes, not as a substitute.ii. Scutum ornamentediii. 3 host tick (excluding winter tick which is a one host tick)c. Amblyommai. Long palpsii. Scutum ornamented (lone star tick has a white dot on dorsal side)iii. Wide host ranged. Otobiusi. Feed on livestock and other large hostsii. Single host tickiii. Adults leave host, don't feed, just mate and lay eggsiv. Not known to transmit disease (there are soft ticks known to do so)V. Tick life stagesa. Eggsb. Larvaec. Nymph - highest risk of human infection (host seek in late spring, summer)d. Adult -host seek in fall as welle. Tick must be attatched for 48 hours to transmit agentf. One host tick:i. Spend majority of life stages on host (including mating), drop off only to lay
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