A study on the establishment of Oesophagostomum dentatum in pigs following percutaneous exposure to third-stage larvae.
We examined the possibility of establishment of patent infections after percutaneous exposure of parasite-naive pigs to 10,000 Oesophagostomum dentatum infective larvae (L3). At 5 weeks after percutaneous exposure the pigs were slaughtered and low numbers of adult O. dentatum were recovered from the large intestine. In addition, exsheathed L3 were intravenously injected into pigs, which resulted in the recovery of fourth-stage larvae (L4) from nodules in the lungs as well as of L4 and adult worms from the large intestine. This study demonstrates the ability of porcine nodular worms to establish in the large intestine when pigs have been exposed percutaneously to infective larvae. It is possible that the larvae reach the large intestine by invading blood veins or the lymphatic system at the site of penetration.
Nosal
P
P
Department of Zoology and Ecology, Agricultural University, Kraków, Poland. rznosal@cyf-kr.edu.pl
Christensen
C M
CM
Nansen
P
P
D000818:Animals; D005243:Feces / Q000469:parasitology; D005260:Female; D006790:Host-Parasite Interactions; D007420:Intestine, Large / Q000469:parasitology; D007814:Larva; D008099:Liver / Q000469:parasitology; D008168:Lung / Q000469:parasitology; D009814:Oesophagostomiasis / Q000469:parasitology / Q000662:veterinary*; D009815:Oesophagostomum / Q000254:growth & development*; D010270:Parasite Egg Count; D018512:Parasitemia / Q000469:parasitology / Q000662:veterinary; D012867:Skin / Q000469:parasitology*; D013552:Swine; D013553:Swine Diseases / Q000469:parasitology*