Notoedres cati
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| ( Hering , 1838) |
Notoedres cati ( syn .: Sarcoptes cati , Sarcoptes scabiei var. Cati , Sarcoptes caniculi ) is a representative of the mite , whichcolonizesthe skin of the cat's headas a parasite andcausesthe so-called head scabies . Occasionally, the pathogens can also spread to humans ( pseudo-scabies ), attack rabbits or cause ear moss in hedgehogs .
morphology
N. cati is a parasite similar to the scabies mite ( Sarcoptes scabiei ). It has a turtle-like body and is 180 µm in length and 145 µm in width (males) or 300 × 250 µm (females), only slightly smaller than the scabies mite, but much smaller than its relative N. muris , which is also not found in cats . The anal opening is dorsal . The third and fourth pairs of legs do not protrude beyond the body. The construction and the arrangement of the sticky stalks ( praetarsi ) resemble those of Sarcoptes.
Way of life
N. cati is a parasite that occurs mainly on the head of cats and occurs worldwide. It mainly affects weakened cats, so that the cat's head mange can be viewed as a factor disease . Rare secondary hosts are other mammals such as humans and hedgehogs.
The development cycle from the egg to the six-legged larva and the eight-legged proto- and trito nymph to the imago takes 21 days. After copulation, the females lay their eggs in bores in the skin. These bores extend into the granular layer ( stratum granulosum ) of the skin. The hatching larvae and the nymphs that develop from them temporarily leave these boreholes. Like adults, they feed on lymph and tissue fluid . Changes to the skin occur through the mouthparts and the saliva of the parasites.
Outside the host, the mites can only survive a few days, at low temperatures a maximum of three days.
literature
- Wieland Beck: Scabies in cats caused by Notoedres cati (Acari: Sarcoptidae) - pathogen biology, pathogenesis, clinical features, diagnosis and therapy. Kleintierpraxis 42 (2000), pp. 715-722.
- Eduard von Hering : The herb mites of animals and some related species, described after own investigations . In: Nova Acta Leopoldina, 18, 1838, pp. 573–624 ( digitized version )
- Th. Hiepe: Textbook of Parasitology. Volume 4. Fischer-Verlag Jena, pp. 167-168. ISBN 3-437-20252-9
- E. Kutzer: Mange of the cat . In: J. Boch and R. Supperer: Veterinary Parasitology . Paul Parey 1992, pp. 638-639.
Individual evidence
- ^ Dwight D. Bowman, Charles M. Hendrix, David S. Lindsay, Stephen C. Barr: Feline Clinical Parasitology. John Wiley & Sons, 2008, ISBN 9780470376591 , p. 394.
