Hair worms
| Hair worms | ||||||||||||
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| Systematics | ||||||||||||
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| Capillaries | ||||||||||||
| Cedar , 1800 |
Hairworms ( Capillaria ) are a genus of roundworms that parasitize in the internal organs of vertebrates . In humans, the lung hairworm , liver hairworm and, in Asia, Capillaria philippinensis (pathogen of capillariasis ) are of particular importance. In veterinary medicine, hairworm infections play a role, especially in dogs (→ threadworm infections in dogs ) and poultry .
Hair worms are very thin round worms, 7 to 80 mm long. As with all Trichuridae , the esophagus is divided into an anterior, muscular, and a posterior, glandular part. In contrast to its sister genus, the whipworm , its rear end is not thickened. Males only have a spiculum with a fold-out sheath, which can also be completely absent.
A distinction is made between about 300 species, which is why some authors also divide them into up to 22 genera ( Amphibiocapillaria, Aonchotheca, Baruscapillaria, Calodium, Capillaria, Capillostrongyloides, Crocodylocapillaria, Echinocoleus, Eucoleus, Freitascapillaria, Gessyella, Liniscus, Paratrichapillema , Pseudocapillaria, Piscicapillaria, Pseudocapillaroides, Pterothominx, Schulmanela and Tenoranema ), but the medical-parasitological literature still largely uses the generic name Capillaria .
literature
- Johannes Eckert: textbook of parasitology for veterinary medicine . Georg Thieme, 2008, ISBN 978-3-8304-1072-0 , p. 354.
