Toxascaris leonina is a common parasitic roundworm found in dogs, cats, foxes, and related host species. T. leonina is an ascarid nematode, a worldwide distributed helminth parasite which is in a division of eukaryotic parasites that, unlike external parasites such as lice and fleas, live inside their host.[1] The definitive hosts of T. leonina include canids (dogs, foxes, etc.) and felines (cats), while the intermediate hosts are usually rodents, such as mice or rats. Infection occurs in the definitive host when the animal eats an infected rodent. While T. leonina can occur in either dogs or cats, it is far more frequent in cats.[2]
A coprolite containing T. leonina eggs was excavated in Argentina's Catamarca Province and dated to 17002–16573 years old. This finding indicates that T. leonina has existed in South America since at least the Late Pleistocene.[3]
^Maizels RM, Yazdanbakhsh M (2003). "Immune regulation by helminth parasites: cellular and molecular mechanisms" (PDF). Nat. Rev. Immunol. 3 (9): 733–44. doi:10.1038/nri1183. hdl:1842/465. PMID 12949497. S2CID 9323279.
^"Roundworms in pets, Vet PetStop, UK". Archived from the original on 2009-05-25. Retrieved 2009-07-05.
^Petrigh, R. S.; Martínez, J. G.; Mondini, M.; Fugassa, M. H. (2019). "Ancient parasitic DNA reveals Toxascaris leonina presence in Final Pleistocene of South America". Parasitology. 146 (10): 1284–1288. doi:10.1017/S0031182019000787. hdl:11336/177873. PMID 31196226.
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Toxascarisleonina is a common parasitic roundworm found in dogs, cats, foxes, and related host species. T. leonina is an ascarid nematode, a worldwide...
Catamarca Province and dated to 17,002–16,573 years old. It contained Toxascarisleonina eggs. This finding indicates that the cougar and the parasite existed...
anthelmintic drug used in veterinary medicine to treat Toxocara canis, Toxascarisleonina, Ancylostoma caninum, Uncinaria stenocephala, Taenia, and Dipylidium...
potentially infectious eggs. List of parasites (human) Toxocara cati Toxascarisleonina Threadworm infections of dogs "Roundworms in Small Animals - Digestive...
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including Cylicospirura felineus, Taenia species, Toxocara cati, Toxascarisleonina and Troglostrongylus wilsoni. Canada lynxes could have played a role...
usually no symptoms. Toxocariasis is an infection of Toxocara canis or Toxascarisleonina. Signs are usually mild, but may include diarrhea, pot-bellied appearance...
former wolf ranges. The most frequent ascaroid roundworm in coyotes is Toxascarisleonina, which dwells in the coyote's small intestine and has no ill effects...
coprolite samples. Two taxa of parasites discovered at the site, Toxascarisleonina and a Physaloptera species found in this study are considered potentially...
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dogs. Two species of roundworms occur in dogs: Toxocara canis and Toxascarisleonina. T. canis is an 8 to 18 cm long nematode that parasitizes (lives as...
Abdelrahim; Mohammed, B.A. (1998). "Prevalence and Treatment of Toxascarisleonina in Naturally Infected Carnivores in Old Khartoum Zoo". The Sudan Journal...
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