1. LAB 9

2. TICKS Relatives to scorpions, mites and spiders Parasites (survival dependent on feeding on a host) GENERA – Hard Ticks (scutum) –Ixodes species (black – legged tick) I. scapularis Ixodes pacificus –Dermacentor species (wood / dog tick) D. variabilis (dog) D. andersoni (wood)

4. Females can lay up to 8000 eggs on a leaf Adults live for about 1 year

5. Scutum is the hard shield found on the back Covers entire back of males 1/3 of the back in females Ixodes species (carries Lyme disease) MALE FEMALE

6. IXODES Species TICK A = anal groove B = anus

7. White markings – Dermacentor sp. MALE FEMALE

8. TICK ?WHITE MARKINGS YES NO DERMACENTOR SPECIES (engorged/not engorged) ?ANAL GROOVE YES IXODES SPECIES (engorged/not engorged) ?SCUTUM Yes…Hard Tick

10. TICK REMOVAL

11. DISEASES TRANSMITTED BY IXODES TICK LYME DISEASE Causative agent: Borrelia burgdorferi Spirochete in the stomach Transmitted after tick engorged for 36 hours Fever, headache, fatigue, target lesion BABESIOSIS Causative agent: Babesia microti Parasite infecting red blood cells ANAPLASMOSIS Causative agent: Anaplasma phagocytophilum Bacterium infecting white blood cells

12. Classic Target Lesion of Lyme Disease