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Know your nymphs!: Asian longhorned ticks (Haemaphysalis longicornis) on the left, blacklegged ticks (Ixodes scapularis) on the right.


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This is the New River, flowing north out of North Carolina into Virginia. The woods alongside the river are heavily infested with blacklegged ticks carrying the Lyme disease pathogen ... this river valley has likely acted as a corridor for southwards spread of infected ticks from VA into northwestern NC.


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The Tick App is a free app for smartphones, conceived to allow people living in high-risk areas for Lyme disease to participate in a 'tick exposure' study being run by researchers from Columbia University and the University of Wisconsin – Madison, members of the CDC Regional Centers for Excellence in Vector-Borne diseases. Funding for this study is being provided by the Centers for Disease Control.
https://thetickapp.org/

Click on their map to explore how many Tick App users are in your area!



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Tick season is heating up in Tennessee, with lots of lone star ticks active in the woods and my dogs has been bringing home American dog ticks each evening. These tick species can spread spotted fevers and red meat allergy, so please take precautions!

Regarding Lyme disease risk, that disease is spread by blacklegged ticks ("deer ticks"). Adult blacklegged ticks are winter-active and most of them are already back down in the leaf litter by this time of year - they will reappear in late October. Over the summer, it's the nymphal life-stage of this tick species that you need to be watching for, and this is a friendly reminder that nymphs (see photo) are much smaller than many people realize!

Be tick-safe out there!


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Ventral view of oviposition (timelapse)



Larval hatch (timelapse)
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Comparison of blacklegged tick surveys done in eastern Tennessee in 2006 (A) versus 2017 (B) ... Lyme disease agent newly detected in 4 counties!


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Nymphal life-stage of the exotic, invasive longhorned tick (Haemaphysalis longicornis) on the left, compared to a nymphal lone star tick (Amblyomma americanum) on the right. Similar on first glance, but on second glance their mouthparts are distinctively different!

These guys were collected in June 2018 from vegetation in southwestern Virginia.






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Three nymphs of blacklegged tick, Ixodes scapularis, three nymphs of lone star tick, Amblyomma americanum, and eight nymphs of the exotic longhorned tick, Haemaphysalis longicornis.

Source: https://fonseca-lab.com/category/research-projects/ticks-tick-borne-diseases/


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