Ctenidia
Ctenidia ( Ctenidia , singular Ctenidium , from ancient Greek κτείς kteís (genitive: κτενός ktenós ) , German 'comb' ) is a term for various body structures in invertebrates.
Molluscs
In mollusks (mollusks) are ctenidia original respiratory system , which in the snails (gastropods) only in some species in the group of prosobranch can be found. They are paired pinnate gills , each made of a shaft with several gill leaflets and are located within the mantle cavity , where they are responsible for gas exchange (for example oxygen).
insects
In parasitic insects, bristle combs are called ctenidia. They are rows of bristle-like chitin formations that prevent the hair from slipping back when moving forward. Ctenidia occur in fleas and bedbugs of the family Polyctenidae . A distinction is made between Genalctenidium (on the head) and Pronotalctenidium (on the back ).
Web links
swell
- Zoology by Cleveland P. Hickman et al .; Pearson Education, 2008; ISBN 3827372658