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Intraspecific Variation in demography and Life History of the Lizard, Sceloporus Jarrovi, Along an Altitudinal Gradient in Southeastern Arizona
Mark—recapture studies were conducted on a low (1675 m) and high (2542 m) altitude population of Sceloporus jarrovi in southeastern Arizona, USA from 1973 through 1976. Average age—specific mortalityExpand
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Reproductive Strategies: Food Availability as a Source of Proximal Variation in a Lizard
Reduced food availability in 1974 significantly altered the reproductive characteristics of a population of Urosaurus near Animas, Hidalgo County, New Mexico compared to 1973. Relative foodExpand
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Lipid provisioning of turtle eggs and hatchlings: total lipid, phospholipid, triacylglycerol and triacylglycerol fatty acids.
Lipid composition of eggs and hatchlings was studied in painted, snapping and Blanding's turtles from western Nebraska. The average total lipid proportions of the egg yolk, post-embryonic yolk andExpand
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Ecological Observations of the Lizard, Xenosaurus grandis in Cuautlapan, Veracruz, Mexicol
Observations on the ecology of Xenosaurus grandis near Cuautlapan, Veracruz revealed that this rarely studied lizard is locally abundant in crevices of boulders in perennial tropical forest.Expand
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Comparative Life Histories of Holbrookia Maculata and Sceloporus Undulatus in Western Nebraska.
The life histories of the iguanid lizards Holbrookia maculata and Sceloporus undulatus were studied in western Nebraska during 1978-1984. The two species differ in their reproductive strategies andExpand
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Temperature relationships in the high-altitude viviparous lizard, Sceloporus jarrovi
-The thermal ecology of Sceloporus jarrovi was studied in the Chiricahua Mountains of southeastern Arizona at different elevations and times of year. Mean body temperature (Tb) was 31.8 C (rangeExpand
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REPRODUCTION IN SCELOPORUS VIRGATUS FROM THE CHIRICAHUA MOUNTAINS OF SOUTHEASTERN ARIZONA WITH EMPHASIS ON ANNUAL VARIATION4
We studied female reproductive and fat body cycles as well as annual variation in clutch size of Sceloporus virgatus in the Chiricahua Mountains from 1969 through 1993. Females mature at 50 mmExpand
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Reproduction in a Nebraska Sandhills Population of the Northern Prairie Lizard Sceloporus undulatus garmani
The reproductive cycle of Sceloporus undulatus was studied in western Nebraska. Females mature in the 1st year following hatching at a size of 45 mm SVL. Two clutches averaging 5.5 eggs each areExpand
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Population ecology and life history strategy of a Montane Lizard (Sceloporus scalaris) in Southeastern Arizona
Summary Populations of Sceloporus scalaris were studied in the Chiricahua Mountains of Southeastern Arizona from 1973–1976. Reproductive maturity occurs in approximately 8 months. A single clutch ofExpand
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REPRODUCTION OF THE TEXAS HORNED LIZARD
The reproductive cycle of the Texas horned lizard, Phrynosoma cornutum at San Angelo, Texas was determined from examination of 116 9 9 and 48 d S. During 1968 and 1969, reproduction began in AprilExpand
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