Ontogenetic variation in the autecology of the greater earless lizard Cophosaurus texanus

@article{Durtsche1997OntogeneticVI,
  title={Ontogenetic variation in the autecology of the greater earless lizard Cophosaurus texanus},
  author={Richard D. Durtsche and Paul J. Gier and Michael M. Fuller and William I. Lutterschmidt and Rosemary Bradley and C. Kate Meier and Steven C. Hardy},
  journal={Ecography},
  year={1997},
  volume={20},
  pages={336-346}
}
We investigated the potential for ontogenetic resource partitioning within a population of the Texas earless lizard Cophosaurus texanus. Results from focal samples, line transects, haphazard observations, and stomach flushes compiled in summer (July 1993) and autumn (September 1995) revealed differences in microhabitat use and diet between adults and juveniles. Juveniles use rock perches more frequently than adult males, and consume smaller prey than adults. No ontogenetic differences in… 
View via Publisher
15 Citations
Highly Influential Citations
1
Background Citations
4

15 Citations

Age-Dependent Enclosure Use in Juvenile Chinese Crocodile Lizards, Shinisaurus crocodilurus crocodilurus

Resource use data suggests the importance of providing enclosures which cater to ontogenetic shifts in captive individuals or within mixed age groupings.

The ontogeny of diet in the Mexican spiny-tailed iguana, Ctenosaura pectinata: Physiological mechanisms and ecological consequences.

A natural size-structured population of iguanid lizards with two subadult cohorts and both adult sexes was studied through two wet and two dry seasons in a tropical deciduous thorn forest in central Mexico to examine the physiological mechanisms and ecological consequences of foraging and diet in this lizard through ontogeny.

Organization of a taxonomically diverse lizard assemblage in Amazonian Ecuador

In some comparisons, prey overlaps among species were greater within than between higher taxa, and closely related species tended to be found in similar habitat patches and microhabitats, suggesting that resource-use patterns are determined to some extent by phylogeny.

Ontogenetic Variation in the Thermal Biology of Yarrow's Spiny Lizard, Sceloporus jarrovii

This study shows that the thermal biological traits of juvenile Yarrow’s Spiny Lizards (Sceloporus jarrovii) differ from the published estimates of the same traits for adult lizards, and argues that not including physiological differences in thermal biology throughout ontogeny may lead to misinterpretation of patterns of ecological or evolutionary change due to climate warming.

Patterns of parasitism in insular lizards: effects of body size, condition and resource availability.

NATURAL HISTORY OF LEIOCEPHALUS SEMILINEATUS IN ASSOCIATION WITH SYMPATRIC LEIOCEPHALUS SCHREIBERSII AND AMEIVA LINEOLATA

We examined diet, habitat use, and behavior (focal animal observations of intraspecific interactions, escape behavior, and activity period) of Leiocephalus semilineatus from near Puerto Alejandro,…

DIET OF EIGHT SPECIES OF LIZARDS FROM GRANITE GAP, HIDALGO COUNTY, NEW MEXICO

The dietary overlap data suggest there were two groups of lizards at Granite Gap: one that consumes a large number and volume of termites (Callisaurus, Cophosaurus, and the two species of Aspidoscelis) and the other that eats large number of ants plus cicadas when lizard size is large enough to consume them (large Sceloporus and Gambelia).

Thermoregulatory accuracy, precision, and effectiveness in two sand-dwelling lizards under mild environmental conditions

Investigation of thermoregulation and habitat use in two sympatric lizard species of the family Phrynosomatidae in southern New Mexico found side-blotched lizards Uta stansburiana and S. arenicolus had a slightly higher preferred temperature and micro- and macro-habitat use for these species was compared.

FORAGING MODES OF SOME AMERICAN LIZARDS: RELATIONSHIPS AMONG MEASUREMENT VARIABLES AND DISCRETENESS OF MODES

Comparisons of the data with published figures showed that PTM values agreed closely for ambush foragers and were in broad agreement for active foragers where direct comparisons could be made, and MPM values overlapped between modes.

Multiple behavioral contexts of a melanized tail display in a desert lizard

It is found that behavioral constraints stemming from both natural and sexual selection can interact synergistically to favor the evolution and expression of a melanistic visual display, even in potentially costly ecological contexts.

References

SHOWING 1-10 OF 39 REFERENCES

Reproductive Ecology of a West Texas Population of the Greater Earless Lizard, Cophosaurus texanus

The reproductive cycle of Cophosaurus texanus, in the vicinity of San Angelo, Texas, was determined from examination of 220 females and 105 males. Reproduction begins in early April and ceases by…

Life History of Cophosaurus texanus (Sauria: Iguanidae): Environmental Correlates and Interpopulational Variation

The observed life-history characteristics suggest energy limitation in the Big Bend population whereas central Texas populations may be limited by high adult mortality.

MALE REPRODUCTIVE CYCLES IN TWO SPECIES OF LIZARDS (COPHOSAURUS TEXANUS AND CNEMIDOPHORUS GULARIS)

The male reproductive cycle of Cnemidophorus gularis and Cophosaurus texanus was investigated by gross and histological examination of the testes to suggest important evolutionary indicators of reproductive effort in male lizards.

Organization of a taxonomically diverse lizard assemblage in Amazonian Ecuador

In some comparisons, prey overlaps among species were greater within than between higher taxa, and closely related species tended to be found in similar habitat patches and microhabitats, suggesting that resource-use patterns are determined to some extent by phylogeny.

Ecology of the whiptail lizard Cnemidophorus deppii on a tropical beach

The whiptail lizard C. deppii was studied during late dry season on a tropical beach on the Pacific coast of Nicaragua, with termites, spiders, and various orthopterans accounting for most of the diet volumetrically.

Ecological comparison of sympatric populations of sand lizards ( Cophosaurus texanus and Callisaurus draconoides )

Sympatric populations of Cophosaurus texanus and Callisaurus draconoides were periodically sampled from March 1973 through April 1974 at Burro Creek, Mohave County, Arizona. Callisaurus were also…

Foraging Ecology of the Fringe-Toed Lizard, Uma inornata, during Periods of High and Low Food Abundance

Omnivorous foraging was recorded in the fringe-toed lizard Uma inornata (Phrynosomatidae) during both high and low food resource periods, May and July 1986, and differences may be due to reproductive activities in the spring and a decreased abundance of food in the summer.

Stage‐Structured Interactions in Bluegill: Consequences of Abult Resource Variation

A two-life-stage model is used to predict how natural variation in Daphnia productivity among lakes should affect both adult and juvenile bluegill densities and growth rates, and predicts that adultbluegill growth and density should be positively correlated among lakes, while juvenile growth anddensity should be negatively correlated in these same lakes.

Behavioural ecology of Tropidurus hispidus on isolated rock outcrops in Amazonia

A population of the tropical lizard Tropidurus hispidus, isolated on a granitic rock outcrop in tropical forest of northern Brazil, was studied during the 1993 wet season, revealing that lizards are active throughout most of the day and that clouds decrease the ability of lizards to effectively thermoregulate.

Ecological Correlates of Population and Individual Variation in Antipredator Behavior of Two Species of Desert Lizards

Path analysis indicated no one variable with great overall influence on antipredator behavior in these lizards but rather a combined influence of several environmental factors.