DIET OF TWO POPULATIONS OF SCELOPORUS GRAMMICUS (SQUAMATA: PHRYNOSOMATIDAE) FROM HIDALGO, MEXICO

摘要

Diet of two populations of Sceloporus grammicus was determined From Tilcuautla and La Estamzuela, Hidalgo, Mexico. Diet. of S. grammicus is Primarily Araneae, Insecta (Coleoptera, Dermaptera, Diptera, Hemiptera, Homoptera, Hymenoptera Lepidoptera, and Orthoptera), Mollusca (gastropods), mid Reptilia (Sauria). Hymenoptera and Coleoptera were most. frequent in the diet of both populations. These groups were more abundant and more diverse in diet. of lizards from Tilcuautla than ill those from Lit Estanzuela. Breadth of diet for males Front Tilcuautla was B = 0.108 and for was B = 0.101, and in La Estanzuela was B = 0.183 and B = 0.095 for males and females, respectively. Overlap between males and females from Tilcuautla was O-jk = 1,000 with Percentage overlap of 97.0-100%, and for La Estanzuela overlap was O-jk = 0.938, with percentage overlap of 76.3-100%. Based oil the feeding-importance value (ViI), coleopeterans and hymenopterans were the most important orders ill the diet of S. grammicus for both populations and sexes. Diet of S. grammicus is mainly insectivorous with a tendency to specialization oil coleopterans and hymenopterans but this species could be a generalist at soft time during the year as indicated by this study.