Gastrointestinal helminths of Yarrow's spiny lizard, Sceloporus jarrovii (Phrynosomatidae) in Mexico

Three-hundred sixty-one Sceloporus jarrovii from 16 states in Mexico were examined for gastrointestinal helminthis. Two species of cestodes, Oochoristica scleopori and Mesocestoides sp; 14 species of nematodes, Abbreviata terrapenis, Macdonalis grassi, Physaloptera retusa, Piratuba prolifica, Scatonema wulkeri, Skrjabinoptera phrynosoma, Spauligodon giganticus, Strongyluris dsimilis, Thubunaea iguanae, Thubunaea intestinalis, Ascarops sp, Gongylonema sp, Mermis sp, Psysocephalus sp and one species of acanthocephalan, Centrorhynchus sp, were found. With the exception of Abreviata terrapensis and Thubanaea intestinsalis, these helminths have been found in other lizards. Throughout the range of S-jarrovii in Mexico, the predominant monoxenous (direct life cycle) helminth was Spaugligodon giganticus (prevalence 68%); the predominant heteroxenous (indirect life cycle) helminth was Physaloptera retusa (prevalence 27%). Sceloporus jarrovii is a new host record for Macdonaldius grassi, Piratuba prolifica, Skrjabinoptera phrynosoma, Thubanaea iguanae, Ascarops sp, Gongylonema sp, Physocephalus sp and Centrorynchus sp.