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¡SOBRE México!: Student Opportunities for Biological Research in Mexico

¡SOBRE México!

Lilly Nava's Research

Ticks in the Dry Tropical Forest

Previous research and questions

  • Ticks life stages/cycle includes eggs, larva (6 legs), nymph (8 legs), and adults (8 legs). A blood meal on a vertebrate host is needed to develop to the next stage.  
  • Initial survey done over spring break during dry season, March 2017.
  • Found more nymphs in uplands during dry season, all adults were found in the arroyos.

  • How will the distribution of ticks change during the rainy season?
  • What kind of tick species will be found during the rainy season?


  • Sampled ticks in uplands and arroyos by dragging a felt sheet along vegetation in the forest.
  • Each collection covered 400 meters of trail.
  • Collection sheets were then stored in ziplock plastic bag and examined for ticks back at EBCh.


  • All adult ticks found either through dragging or on local animals were Amblyomma cajennense (Cayenne tick).
  • All larval and nymphs were consistant with A. cajennense, but cannot be positively identified visually.
  • Most of the ticks were found in the Arroyos, but one large congregation (208 individuals) of larval (newly hatched) ticks was found during one sampling event in the uplands.


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