. Bulletin. Science; Natural history; Natural history. RESEARCH NOTES 43 Table 1. Yearly samples of western fence lizards. Whittier Crystal Lake Strawberry Peak 1971 85 74 _ 1972 241 172 — 1986 45 67 — 1987 18 32 — 1988 7 — 15 1989 54 — 55 Totals 450 345 70 Puente Hills population was 1/54 () and 1/55 () for the Strawberry Peak population. Our data shows that Mesocestoides sp. is uncommon in the western fence lizard in southern California. Its absence in the years 1971-72, 1986-88 indicates it is an infrequent parasite in the western fence lizard populations in the above three study ar
. Bulletin. Science; Natural history; Natural history. RESEARCH NOTES 43 Table 1. Yearly samples of western fence lizards. Whittier Crystal Lake Strawberry Peak 1971 85 74 _ 1972 241 172 — 1986 45 67 — 1987 18 32 — 1988 7 — 15 1989 54 — 55 Totals 450 345 70 Puente Hills population was 1/54 () and 1/55 () for the Strawberry Peak population. Our data shows that Mesocestoides sp. is uncommon in the western fence lizard in southern California. Its absence in the years 1971-72, 1986-88 indicates it is an infrequent parasite in the western fence lizard populations in the above three study areas. Twenty-six species of North American lizards have been reported as hosts of Mesocestoides sp. tetrathyridia with an additional three species possibly containing them (Table 2). Sceloporus jarrovi represents a new host record. For a cosmo- politan genus, Mesocestoides sp. has been found in lizards in only a few locations; 7 states but only 15 counties. Reported prevalences ranged from 0 to 27. In addition to the absence of Mesocestoides sp. from Gambelia wislizenii, Mankau and Widmer (1977) reported its absence from three species of Sceloporus (Table 2). The higher prevalences are associated with iguanid lizards of arid habitats. Fig. 1. Histological section through part of a tetrathyridium from the western fence lizard. Note convoluted border and scattered calcareous corpuscles (arrows) which are diagnostic of larval cestodes, Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Southern California Academy of Sciences. Los Angeles, Calif. : The Academy
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