pollicaris, two had monoxenous
lifecycles and represented 97.4% of the total parasite abundance in these lizards.
Of the 10 helminth species using Sceloporus jarrovii as a definitive host, only Spauligodon giganticus and Stronglyluris similis are monoxenous (direct life cycle); infection of lizards occurs with the ingestion of helminth eggs (Anderson, 1992).
The ranges of the two most abundant helminths, Spauligodon giganticus (monoxenous life cycle) and Physaloptera retusa (heteroxenous life cycle) encompass a geographic area from Oregon and Idaho, through California and Utah across to Texas and S to Veracruz, Mexico (see Baker, 1987) or roughly twice the size of the range of Sceloporus jarrovii.
parasites Effective, increased intensity in larger groups (Moore et al.
Otobius megnini have a monoxenous
life cycle with four stages: 1) egg, 2) six-legged larva, 3) eight-legged nymph, and 4) eight-legged adult.
Within Eimeriid Coccidia, a clear distinction exists between the tissue cyst-forming Coccidia, exemplified by Toxoplasma gondii and various Sarcocystis species comprising the Family Sarcocystidae, and the monoxenous coccidia, exemplified by the Family Eimeriidae (Lindsay and Blagburn,1994; Tenter et al., 2002).
Therefore, Isospora from the Siberian tiger, like Isospora suis, may be a monoxenous parasite.