Sheep tick nymph. Coloured scanning electron micrograph (SEM) of a nymph of the sheep tick (Ixodes ricinus). A nymph is a sexually immature stage before reaching adult size. This tick is a blood-sucking parasite of animals and humans and the principal vector of Lyme disease in Europe. At centre is its long, barbed hypostome used to suck blood from the host; sensory pedipalps occur on either side of the hypostome. The nymph has four pairs of walking legs. It is only the adult female tick that sucks blood from humans. Lyme disease occurs when the biting tick transmits a bacterium to humans. Lyme disease causes fever, muscle pain, and inflamed joints. Magnification: x45 at 6x6cm size. | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / EYE OF SCIENCE |
Bildgröße: | 2048 px × 2048 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
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