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Showing 1 to 9 of 9 for “"Sceloporus undulatus"”.
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The spermatogenesis of Sceloporus undulatus
… of the chromosomes in the common fence swift, Sceloporus undulatus.
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Home range and activity in a Virginia population of Sceloporus undulatus
A study of the lizard Sceloporus undulatus, conducted 1981-82 at an abandoned coal mine in Virginia, was designed to determine whether home range size, home range overlap, and patterns of behavior reflected the requirements of polygyny. The lizards were seen most often on the piles of debris that …
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Habitat preferences of the eastern fence lizard, Sceloporus undulatus, in southwestern Virginia
Habitat preference of the eastern fence lizard, Sceloporus undulatus, was investigated in southwestern Virginia. Habitat features were measured at 158 lizard-centered plots and at paired random plots. Landscape-level variables, southerly aspect and mixed forest type, distinguished lizard-centered …
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The Reproductive Cycle of Sceloporus undulatus From Alabama Corresponding Plasma Steroid Levels and Comments on Reproductive Variation.
… fall recrudescence later than Missouri S. undulatus. Plasma testosterone levels in the males peaked soon after emergence from brumation, declined during spring breeding, and rose again in the fall. These changes were concomitant with changes in testis mass and spermatogenesis.Females …
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Relationships Among Behavior, Body Temperature, Physiological State and Habitat Utilization in the Northern Fence Lizard Sceloporus Undulatus Hyacinthinus
Observations were made of S. u. hyacinthinus, two at a time, in a 4' x 8' enclosure behind a two-way mirror. Behavior, body temperature and location of the animals within the enclosure were recorded at 10-second intervals. By far the most significant predictor of body temperature was found to be …
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The vomeronasal organ of the skink, Scincella lateralis: the morphology and role in predation
… and Ophisaurus ventralis, and the ascalobotans: Sceloporus undulatus, Hemidactylus turcicus, and Xantusia vigilis. As judged by the thickness of the vomeronasal sensory epithilium the vomeronasal organ was most highly developed in Ophisaurus venteralis and least developed in Sceloporus undulatus. …
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Physiological and Ecological Constraints on the Evolution of Viviparity in Sceloporine Lizards
… hypothesis that embryos of the oviparous lizard Sceloporus undulatus from a high-latitude population are laid at more advanced developmental stages and have a higher developmental rate at low partial pressure oxygen (pO2) under simulated in utero conditions than embryos from a low-latitude …
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Phenotypes and Survival of Hatchling Lizards
… conditions that female eastern fence lizards (Sceloporus undulatus) select when provided a range of conditions from which to choose. In general, I found that females selected nest sites with conditions that yield high hatching success. In Chapter two, I investigated the relative contributions …
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The ontogeny of display behavior in Sceloporous undulatus hyacinthinus (Sauria: iguanidae)
Displays of 36 Sceloporus undulatus hyacinthinus from 8 clutches were recorded on video tape from the day of hatching to adult size during 1978, 1979, and 1980. Nine hundred forty-one displays were analyzed frame by frame, and durations of display units were calculated to the nearest 0.01 s. From …