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The hominga bilityo f deserti guanas,D ipsosauruds orsalisw, as studiedi n Anza Borrego Desert State Park, San Diego County, and in Thousand Palms, Riverside County, California. Eighty-three lizards were displaced distances ranging from 50-400 m. Twenty-two lizards successfully homed at least once. Two lizards homed from distances of 250 m, and one lizard from 274 m. These homing distances exceed the previously reported maximum homing distance for lizards. Similarities between the results of this study and previous studies are discussed. Published in Herpetologica, volume 33, issue 1, on pages 123 - 127, in 1977.
Home range size of adult desert iguana lizards, Dipsosaurus dorsalis, was studied during June and July of 1975, in Thousand Palms, Riverside County, California, USA. The mean home range size of S 8 (1,462 m') and 9 9 (1,558 m') for combined pre-storm and post-storm sightings was not significantly different. Home range size was correlated positively with body size and the number of sightings. A 5-day sandstorm occurred 16-21 June which greatly reduced the leaves and flowers of native plants in the study area. Home range size and overlap prior to and after the storm were compared. Home range size of 12 lizards, with four or more observations each for the two periods, was significantly larger after the storm. Home...
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