what do Arthropods have in commmon?
(Gliederfüßer)
segmented body
chitin-containing cuticles
hard skeleton —> resistance to environment
separate sexes & internal fertilization
sperm inserted into reproductive trait of female
what different Ectoparasites exist and where can we find them?
can be found on/in skin of vertebrate host
hematophagous (suck blood)
e.g bed bug (Cimex tectularius)
histophagous (tissue-feeders)
e.g Chigger (Trombiculidae mite)
funfacts Sarcoptes Scabiei, how do they penetrate skin barrier?
= burrowing mite, the itch mite (Krätze)
8-legged mite
secrete a clear fluid that forms a pool around their body —> sink in
intense itching and rash (Ausschlag) with small pimples
tiny burrows on skin, caused by female scabies under layer of upper skin
Lifecycle Sarcoptes Scabiei
Egg (2-3 days) —> Larva (3-4 days) —> Nymph stage (4-7 days)
—> adult female (1-2 months) —> Egg
even with low number of unites in host, they find and mate
What do Trichinella Sp. and Sarcopes scabiei have in common?
both are parasitic infections
transmitted through direct contact
involve larval migration
Last changed10 months ago