Description:
The life stage of the parasite or other symbiont. "adult" indicates the specimen is in the adult sexually reproductive stage and has mature, developed reproductive organs; "adult, immature" indicates it is in its adult stage but is immature and has not yet developed reproductive organs; "larva" is the non-reproductive nematode life stage found in intermediate hosts; "metacercaria" is the encysting trematode life stage found in the second intermediate host; "sporocyst" is the asexual cloning trematode life stage found in the first intermediate host. Missing data identifier NA (not applicable).