Paratenic Host. Zoites which may be sporozoites ormerozoites are found in extraintestinal tissues (ie mesenteric lymph nodes liver or spleen) of definitive host as well as in paratenic (transport hosts) such as mice rats hamsters and other vertebrates.
Host Biology Wikipedia from Wikipedia
Baylisascaris shroederi common name giant panda roundworm is a roundworm (nematode) found ubiquitously in giant pandas of central China the definitive hosts Baylisascaris larvae in paratenic hosts can migrate causing visceral larva migrans (VLM) It is extremely dangerous to the host due to the ability of the parasite’s larvae to migrate into brain tissue and cause damage.
Coccidia Companion Animal Parasite Council
If they are in their definitive host they develop for several weeks then enter the intestinal lumen mature mate and produce eggs which are carried out in the fecal stream If the larvae are in a paratenic host they break into the bloodstream and enter various organs particularly the central nervous system A great deal of damage occurs wherever the larva try to make a home In.
