Sheep tick mouthparts, SEM

Bildnummer 12528663
Sheep tick mouthparts, SEM
Sheep tick mouthparts. Coloured scanning electron micrograph (SEM) of the mouthparts of an adult sheep tick (Ixodes ricinus). It is a blood-sucking parasite of animals and humans and the principal vector of the disease in Europe. Here its specialised mouthparts used to pierce the host's skin are seen. Scissor-like chelicerae (at centre) cut a hole in the skin; the long hypostome (lower centre) is then inserted with its backward pointing barbs anchoring the animal. Blood flows along the hypostome. Sensory pedipalps are on both sides of the mouth. Lyme disease occurs when the biting tick transmits a bacterium to humans. Lyme disease causes fever, muscle pain, and inflamed joints. Magnification: x75 at 6x7cm size.
Lizenzart: Lizenzpflichtig
Credit: Science Photo Library / EYE OF SCIENCE
Bildgröße: 3891 px × 3139 px
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