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Urosaurus ornatus

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676:(FID, the distance between the animal and the predator before escape is attempted). Levels of expression in both chemical and behavioral responses can differ depending on color variation of the throat. Chemical levels in both O and OB males can change significantly when predators are spotted. When encountered with a predator, the lizard's corticosterone levels in both O and OB males spike, but both types of males have the same hormone levels. When looking at testosterone levels in both O and OB males when encountering a predator, both males testosterone levels spiked, but the O males had higher testosterone levels than the OB males. When looking at behavioral responses there is also a difference in hiding time and flight distance. When encountering a predator O males have a larger flight distance compared to OB males, meaning that O males will escape when a predator is farther away when compared to an OB male, which will let the predator get closer before escaping. Hiding time differed between O males and OB males, where O males had significantly longer hiding periods after the encounter with the predator when compared to OB males. Overall OB males express lower chemical levels, shorter flight distances, and shorter hiding periods when encountered with a predator compared to O males. 523: 645: 597:
temperature would be 35 degrees Celsius, but if the male lizard was in a desert riparian habitat its body temperature would be around 38 degrees Celsius. Their changes in body temperatures reflect the climates they live in. These temperature differences also occur between male and female lizards. On average the body temperature of a female is lower than the males body temperature. There is a possibility that this difference in body temperature could be related to the presence or absence of sexual differences between males and females and could also affect the health of the clutch and the size of the clutch.
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fitness, increased population size should cause a decrease in body size and growth rates across the population. In these lizards there is population density-dependent growth for females of this species but not for males. The temperature quality of the environment that these lizards live in also determines body size and composition. Lizards that are raised and produced in crowded spaces and environments with poor resources and lower temperatures grow smaller than lizards in higher quality environments with better suited temperatures and good resources.
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dominant. There is a direct correlation between spot presence/size to social status and dominance within the lizard population. Color variation in the throat can also affect reproduction tactics between different males. Males with a throat color that has a solid central greenish-blue patch within an orange background (OB) are territorial and more aggressive than males that lack the greenish-blue patch (O), therefore suggesting that OB males will fight more for their mate. These two types of males, therefore, are thought to express alternative
850:. Therefore, these females have smaller follicles than the non-wounded females. When the females, however, are denied access to any food (extreme food restriction), they do not invest any energy towards their reproductive or immune systems. Therefore, these females are influenced by resource competition between their reproductive and immune systems. This competition, however, only manifests itself when there are limited resources, and the intensity of this tradeoff depends on the abundance of resources. Since the abundance of resources is 388:
is just uncommon. The OB male having territorial and defensive traits makes them spend more time fighting or displaying and asserting their dominance over the O lizards and exerting that amount of physical strength allows them to develop the higher rates of speed and longer durations of stamina. When the O male competes against the OB male and loses, the O male does not get the opportunity to utilize their speed and stamina and therefore causes them to have decreased rates of speed and shorter periods of stamina.
77: 52: 33: 320:"). The second has a solid orange throat fan ("dewlap"). The orange-blue males are more aggressive and defend territories that can include up to four females. The orange males have longer, leaner body types and are much less aggressive. Orange males can be nomadic during dry years, and during rainy years tend to occupy small territories. 744:
is seasonally variable—the diet changes according to changes in the seasons. Because they are abundant in areas where there are more trees, they depend on the food available in that niche. When the seasons undergo change or the prey migrate, it induces changes in the abundance of the lizards food and
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that allow them to achieve equal fitness. O and OB males behave differently in different situations, but most times having the OB male be dominant over the O male. While OB males are more dominant socially, O males are usually larger and grow faster than OB males, both in captivity and in the wild. O
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performance can be traced to the suite of displays that identify a dominant individual being the presence/size of the blue spot on their throats. These activities may be affected by different intensities and duration and it is possible for an O male to have better speed and stamina than an O male, it
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Reproducing female ornate tree lizards are generally pregnant between late March through August. Additionally, they produce around two to seven eggs in their clutch once a year. The mean clutch size, however, is variable. The size of a female's clutch varies according to the season, and it will vary
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when they reach sexual maturity. When the males emerge in January, they will have small testes, however, their mean testis size becomes progressively larger between the months of February, March, and April. By April, their testis size will level off and by June, the males will generally reach their
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and their larvae, but have also been known to eat plants and vegetables as well as inanimate objects thinking they were food. These lizards also have diet patterns that change throughout the seasons changing what they eat and the quantity of it. In the winter/spring time their main food sources and
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Lizards are ectotherms and because of their temperature dependent lifestyle they may not follow predictions of density‐dependent habitat selection models because temperature strongly influences their habitat selection and population structure. Since competition for resources can cause a decrease in
698:, and thus, sensitivity of individuals to circulating corticosterone can depend on binding capacity and level of CBG. The binding affinity of the androgen-glucocorticoid-binding globulin (AGBG) in tree lizards is similar between the territorial OB and nonterritorial O males, but AGBG has a greater 605:
The size of each lizard is closely related to their age and the seasonal state of their environment. During winter months (January through March), 75% of adults and 25% of juveniles are active and 13% of juveniles are active in the spring season. Additionally, at the beginning of April, 87% of the
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There are large temperature ranges throughout the southwestern United States and these lizards adapt to the different climates that they live in. Their mean body temperatures also change depending on where they are located. If the male lizard was in a montane habitat or a desert habitat their body
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for resources. When the amount of food intake is manipulated for reproducing female ornate tree lizards, there are changes in their allocation of resources in their bodies. When females have unlimited access to food intake, their reproductive systems and immune systems were readily maintained and
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These lizards tend to be active during every month except December. Both male and female ornate tree lizards emerge only on the warmest days in November and January, however, they engage in extended period of activity in February. When the lizards are active, they tend to occupy open locations in
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across age or sex classes. In most encounters between males with an orange background and blue spot (OB) and males with just the orange background (O), the OB males are almost always dominant. In the case of an interaction between two OB males, the male with the larger blue spot tends to be more
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and choosing a mate, a male may go after a larger female knowing that they will produce a larger number of offspring which will help them carry on their genes. There is also a relationship between the environment that the clutch is hatched in and the size of the clutch. Females that lay eggs in
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color change of the throats for polymorphic males have important social functions. Females and young males with an orange throat coloration inhibits aggression from male adults. Dominant males that develop different throat colors late in their development will typically have blue and blue-green
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as related to stress and aggressive competition. Its life history and costs of reproduction have been documented in field populations in New Mexico and Arizona. This species has been fairly well studied because of its interesting variation in throat color in males (within a population) that can
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with eggs, females tend to be orange or red. Recent experiments also suggest females have association, and perhaps mating preferences for different male types, and that this female preference varies with the throat color of the female herself, and with the colors of the two males that she was
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The lizards will reach their minimum adult size within a year. Male ornate tree lizards will grow approximately 0.16 to 0.29 mm per month. During the spring and summer seasons, however, the male growth rate increases to an average of 2.1 mm per month. Female ornate tree lizards are
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in OB males. Nonterritorial O males have higher levels of free corticosterone than do territorial OB males during stressful events due to the differences in binding capacity and levels of CBG. This free corticosterone difference could contribute to the higher behavioral reactivity - greater
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and then later, as a juvenile, higher testosterone levels will cause him to develop into an orange-blue type; low progesterone and later lower testosterone levels, as a juvenile, may lead the male to develop into an orange type. During dry weather conditions, orange-type males'
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lizards also compete interspecifically for resources. Limited resources lowers population density of both lizard species. There is seasonal variation in the intensity of competition between these species which is highly correlated to food availability and the amount of
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develop an orange throat color within 15 days of hatching and the lizards that had a delayed onset of throat coloration are typically smaller for their age. Therefore, the size of the ornate tree lizard is a better indicator of their throat color than their age.
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healthy. This is because these females can invest more of their energy into reproduction and towards their immune systems. Therefore, these females can reproduce while simultaneously healing any wounds that they have on their bodies. When the females are on a
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was abundant, however, during 1975 and 1977, there was little precipitation. During the dry years, there is a decrease in available prey and the ornate tree lizard's individual foraging success, growth rates, body masses, and prehibernation
623:. When the females grow to 45 mm, they are considered 'mature'. For males, there is a small range in their size. Researchers have proposed that there is a stabilization in growth rate as they approach their maximum size. 370:
to decrease, leading them to be more likely to leave their territory and become nomadic. Orange-blue males do not have this hormonal response to the weather, and remain in their territories regardless of climatic conditions.
357:, have suggested multiple male genders in this species. Among differently colored male tree lizards, there are different hormonal profiles. On the day a male tree lizard hatches, researchers think that high blood levels of 769:
There is a direct correlation between the size of the female lizard and the size of the clutch that is produced. As body size increases the clutch size increases as well, making the bigger female lizards have a higher
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is an important part of reproduction for many males in this species. Males often defend territories by aggressively excluding other males. This aggression can, in part, be enhanced with higher levels of the
304:; females lack this abdominal coloration. Male ornate tree lizards are found in a variety of colors. While not all populations contain more than one or two colors, 9 color types have been documented within 803:
within one year of hatching. The hatchlings produced by the female appear from the middle of June through to November. During the autumn season, however, hatching is highest. Females will have enlarged
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It has been suggested that the abundance of rainfall that the ornate tree lizard experiences induce a multitude of changes in this lizard's behaviors. During a four-year study in the grapevine hills of
316:, has two types of coloration patterns among male tree lizards that account for 45% of all males. The first is characterized by a blue spot in the center of a larger orange patch on the throat fan (" 495:
which induces changes in diet, behaviors, and health of individuals. Since drought induces food scarcity, there is increased intra-specific competition for resources. Studies have demonstrated that
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males will maintain this orange throat coloration for life, however, polymorphic males will either retain their orange throat color or they will develop a yellow throat color as they mature. The
757:, consisting of one male and one or more females, typically inhabits an area containing one or more large trees, shrubs, or boulders. The male copulates with each female, and the females retain 690:. Binding globulins regulate steroid hormone impacts on behavior and physiology in the body can cause differences in hormone levels which can affect changes in behavior. When bound to a 881:
but they do not defend territories. When the number of females on a male's territory is experimentally reduced by removing the females, the male is more likely to abandon his territory.
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throats. This suggests that these colors are visual indicators of social dominance. Researchers have hypothesized that the different throat colors of these lizards have important
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Hews DK, Thompson CW, Moore IT, Moore MC (1997). "Population frequencies of alternative male phenotypes in tree lizards: geographic variation and common-garden rearing studies".
2607: 846:, they experience changes in their reproductive and immune functions. If these reproducing females must invest energy into their reproductive and immune systems, there is a 383:
in male lizards. OB males or dominant males are significantly faster than O males and have higher lengths of stamina than O males. The link between social hierarchy and
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lizards express chemical and behavioral responses to predators. Chemical responses of the males when encountering a predator can include changes in their levels of
1757:"Demographic and Life-History Variation among Populations of the Iguanid Lizard Urosaurus ornatus: Implications for the Study of Life-History Phenomena in Lizards" 1168:
Matt KS, Moore MC, Knapp R, Moore IT (1997). "Sympathetic mediation of stress and aggressive competition: plasma catecholamines in free-living male tree lizards".
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Knapp R, Hews DK, Thompson CW, Ray LE, Moore MC (2003). "Environmental and endocrine correlates of tactic switching by non-territorial male tree lizards,
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Moore MC, Hews DK, Knapp R (1998). "Hormonal control and evolution of alternative male phenotypes: generalizations of models for sexual differentiation".
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from the beginning of March through August. Additionally, the frequency of pregnant females is the highest during the months of April, July, and August.
2430: 862: 417:. This is because the throat coloration of male ornate tree lizards affects their social relationships. Additionally, since throat coloration is a 2469: 541:
is one of the most widespread and abundant of North American lizards. It inhabits a wide range of states throughout the United States, including
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Jennings DH, Moore MC, Knapp R, Matthews L, Orchinik M (2000). "Plasma steroid-binding globulins mediate stress reactivity in the tree lizard,
2305: 2261: 2160: 1796:"Temperature Relationships of the Tree Lizard, Urosaurus ornatus, from Desert and Low-Elevation Montane Populations in the Southwestern USA" 452:
causing O males and OB males to fight for resources. The social systems that allow for the stability of the lizard population cause a mixed
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largest testes size. By July, their testes size will slightly decrease and by August and September, their testes will rapidly decrease.
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and Formicidae. For the ornate tree lizard, their food intake is variable. Multiple studies have provided evidence that the diet of the
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levels were significantly lower. Population density was also reduced. These results have led researchers to propose that dry years are
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within these lizard populations. It is thought that the blue patch on their throats acts as a badge that signals fighting ability and
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Hews DK, Knapp R, Moore MC (1994). "Early exposure to androgens affects adult expression of alternative male types in tree lizards".
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When resources become scarce for the ornate tree lizard, this species encounters a multitude of critical challenges. There is direct
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also varies. Therefore, the state of the environment directly affects competition and food availability for the ornate tree lizard.
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due to their differences in territoriality. The blue patch can be described as a characteristic that heavily contributes to
283:. The species, which was formerly called simply the "tree lizard", has been used to study physiological changes during the 2245: 2192: 1707:"An Experimental Study of Interspecific Competition Between the Iguanid Lizards Sceloporus Merriami and Urosaurus Ornatus" 923: 465:
males will reach a larger size before breeding time, but once both O and OB males reach adulthood they are the same size.
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French SS, Moore MC (2008). "Immune function varies with reproductive stage and context in female and male tree lizards,
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Weiss SL, Moore MC (2004). "Activation of aggressive behavior by progesterone and testosterone in male tree lizards,
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Landwer, Allan J. (December 1994). "Manipulation of egg production reveals costs of reproduction in the tree lizard (
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ornate tree lizards are in a reproductive state. This is because the beginning of April marks the beginning of their
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Lattanzio M, Metro KJ, Miles DB (2014). "Preference for male traits differ in two female morphs of the tree lizard,
1506:"Alternative antipredator tactics in tree lizard morphs: hormonal and behavioural responses to a predator encounter" 704: 673: 276: 76: 2513: 1075: 1005: 511: 736:
larvae but in the summer their diet changed to their main food sources mostly consisting of the insect families
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about two weeks after mating. In many parts of its range, females may lay more than one clutch of eggs a year.
680: 300:(SVL) of up to 59 millimetres (2.3 in). As adults, all males have paired turquoise patches of skin on the 284: 1652:"Tree lizard (Urosaurus ornatus) growth decreases with population density, but increases with habitat quality" 2188: 960: 919: 531: 198: 774:
due to size rarity. Body size for the female lizard could be a sought after trait and could be a factor in
2357: 2195:(1852). "Characteristics of some New Reptiles in the Museum of the Smithsonian Institution. Second part". 1064: 1025: 948: 795:
the reproducing female inhabits will change in the reproductive outcomes of the females. All the female's
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Thompson CW, Moore MC (1991). "Syntopic occurrence of multiple dewlap color morphs in male tree lizards,
426: 397: 338: 181: 1613:"The Ontogeny of a Variable Social Badge: Throat Color Development in Tree Lizards (Urosaurus ornatus)" 1706: 1505: 1458: 2417: 1244: 2254:
Peterson Field Guide to Reptiles and Amphibians of Eastern and Central North America, Fourth Edition
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in Texas, researchers observed the behavior of this lizard from 1974 to 1978. During 1974 and 1976,
2300:. The Peterson Field Guide Series ®. Boston and New York: Houghton Mifflin Company. xiii + 533 pp. 1086: 843: 834: 497: 461: 401: 41: 2500: 1743: 2577: 2293: 2016: 1974: 1943: 1904: 1865: 1823: 1776: 1726: 1687: 1632: 1533: 1486: 1354: 1268: 1193: 1130: 972: 854:
because of the constantly changing environment, the intensity of the tradeoff is also malleable.
653: 211: 71: 1341: 2461: 2036:"Immune activity suppresses reproduction in food-limited female tree lizards Urosaurus ornatus" 2404: 2301: 2279: 2271: 2257: 2249: 2217: 2156: 1935: 1815: 1768: 1679: 1671: 1593: 1525: 1478: 1260: 1185: 936: 771: 699: 586: 414: 384: 297: 2549: 2236:
A Field Guide to Reptiles and Amphibians of Eastern and Central North America, Second Edition
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in parentheses indicates that the subspecies was originally described in a genus other than
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and longer hiding duration - of O males compared to OB males in response to predation risk.
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Zucker N, Boecklen W (1990). "Variation in female throat coloration in the tree lizard (
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Females also can vary in throat coloration, although this is not as well-studied. When
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During the months of June through to November, male ornate tree lizards have enlarged
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males during developmental stages are responses to changing social roles, enabled by
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The throat color of this lizard represents important information about their level of
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Reptiles and Amphibians: A Guide to Familiar American Species: A Golden Nature Guide
1691: 1537: 1490: 1197: 2409: 1272: 874: 870: 851: 665: 367: 358: 138: 1521: 2495: 2443: 2389: 830: 733: 691: 309: 253: 2380: 1459:"Throat colour reliably signals status in male tree lizards, Urosaurus ornatus" 328:
The differences in throat color can impact many different behaviors and create
1056: 903: 878: 796: 784: 780: 566: 542: 1963:"Seasonal Variation in the Diet of Urosaurus ornatus in a Riparian Community" 1939: 1924:"Seasonal Variation in the Diet of Urosaurus ornatus in a Riparian Community" 1819: 1772: 1675: 1656:
Journal of Experimental Zoology Part A: Ecological and Integrative Physiology
1597: 1572:"Locomotor performance and dominance in male Tree Lizards, Urosaurus ornatus" 1529: 1482: 610:. By the month of May, however, all the lizards have reproductive potential. 1035: 847: 729: 721: 620: 449: 433: 380: 329: 158: 88: 1683: 1264: 2526: 1189: 32: 2374: 2214:
The Audubon Society Field Guide to North American Reptiles and Amphibians
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Additionally, throat coloration is also associated with size. 82% of
317: 280: 265: 98: 2351: 2238:. Boston: Houghton Mifflin Company. xviii + 429 pp. + Plates 1-48. ( 2012: 1900: 1861: 1811: 1722: 1628: 783:
tend to have a higher clutch size than females that lay eggs in the
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since females tend to mate with males that have larger blue spots.
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according to the geographical location of the female lizard. The
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The differences in throat color can also be related to speed and
2422: 2256:. Boston and New York: Houghton Mifflin Harcourt. xiv + 494 pp. 550: 2355: 2298:
A Field Guide to Western Reptiles and Amphibians, Third Edition
1997:"Natural History Notes on the Iguanid Lizard Urosaurus ornatus" 1885:"Natural History Notes on the Iguanid Lizard Urosaurus ornatus" 1846:"Natural History Notes on the Iguanid Lizard Urosaurus ornatus" 421:
trait, it is possible that the different throat colors seen in
1342:"Ornate Tree Lizard (Urosaurus ornatus) - Reptiles of Arizona" 725: 1504:
Thaker, Maria; Lima, Steven L.; Hews, Diana K. (2009-02-01).
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largest quantity of food eaten were from the insect families
2155:. Baltimore: Johns Hopkins University Press. xiii + 296 pp. 2090:) territories: experimental perturbation of the sex ratio". 2276:
Reptiles of North America: A Guide to Field Identification
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Thompson, Christopher W.; Moore, Michael C. (1991-11-01).
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Hammerson, G.A.; Frost, D.R.; Santos-Barrera, G. (2007).
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Beolens, Bo; Watkins, Michael; Grayson, Michael (2011).
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M'Closkey RT, Baia KA, Russell RW (1987). "Tree lizard (
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while behavioral responses shown tend to be hiding and
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Thompson CW, Moore MC (1991). "Throat colour reliably
1452: 1450: 1448: 1446: 1444: 1442: 1440: 1438: 1436: 1434: 2364: 1650:Paterson, James E.; Blouin-Demers, Gabriel (2018). 2110:): Relation to reproductive cycle and fecundity". 1158:". The Reptile Database. www.reptile-database.org. 694:(CBG), plasma corticosterone may not diffuse into 288:correlate with different reproductive strategies, 1794:Smith, Geoffrey R.; Ballinger, Royce E. (1995). 1744:Herpedia: The Reptiles and Amphibians of Wyoming 1413: 1411: 1359:A Field Guide to Western Reptiles and Amphibians 456:for the continuation of their genes. In a mixed 404:males will firstly have an orange throat color. 2137:(7): e101515. doi: 10.1371/journal.pone.0101515 353:Some, such as Stanford professor and biologist 1304: 1302: 906:are recognized as being valid, including the 683:can be attributed to the binding capacity of 619:typically smaller than males when they reach 8: 2046:(6). British Ecological Society: 1115–1122. 1131:10.2305/IUCN.UK.2007.RLTS.T64174A12750887.en 1074:, is in honor of German-American naturalist 2352: 510:. Where rainfall varies, the intensity of 50: 31: 20: 2322:. New York: Simon and Schuster. 160 pp. ( 2051: 1587: 1129: 2312:, pp. 296–297 + Plate 32 + Map 96). 2242:, pp. 108–109 + Plate 16 + Map 61). 1990: 1988: 1839: 1837: 1085:, is in honor of American herpetologist 1063:, is in honor of American herpetologist 2593:Fauna of the Southwestern United States 1361:. (Peterson Field Guides). 3rd Edition. 1098: 715:The ornate tree lizard feeds on mostly 2147: 2145: 2143: 2608:Taxa named by Charles Frédéric Girard 2603:Taxa named by Spencer Fullerton Baird 2216:. New York: Alfred A. Knopf. 743 pp. 1291:General and Comparative Endocrinology 1216:General and Comparative Endocrinology 1150: 1148: 296:The ornate tree lizard may grow to a 7: 1570:Robson, M. A.; Miles, D. B. (2000). 825:Resource allocation for reproduction 2573:IUCN Red List least concern species 1310:Behavioral Ecology and Sociobiology 1117:IUCN Red List of Threatened Species 2278:. New York: Golden Press. 240 pp. 2197:Proc. Acad. Nat. Sci. Philadelphia 14: 2153:The Eponym Dictionary of Reptiles 2228:, pp. 535–536 + Plate 369). 2053:10.1111/j.1365-2435.2007.01311.x 1589:10.1046/j.1365-2435.2000.00427.x 75: 2268:, pp. 299–300 + Plate 28). 692:corticosteroid-binding globulin 460:, both morphs pursue different 275:. The species is native to the 458:evolutionarily stable strategy 366:levels increase, which causes 1: 2588:Reptiles of the United States 1522:10.1016/j.anbehav.2008.10.014 1475:10.1016/S0003-3472(05)80120-4 1394:status in male tree lizards, 1182:10.1016/S0031-9384(96)00500-8 308:. A population documented in 2206:, new species, p. 126). 1922:Aspland, Kenneth K. (1964). 1017:– Colorado River tree lizard 833:between the female lizard's 454:evolutionary stable strategy 392:Significance of throat color 1611:Carpenter, Geoffry (1995). 705:flight initiation distances 2624: 2598:Reptiles described in 1852 2165:Urosaurus ornatus schmidti 1755:Dunham, Arthur E. (1982). 885:Phenotype and reproduction 674:flight initiation distance 528:Urosaurus ornatus schmidti 277:southwestern United States 1961:Aspland, Kenneth (1964). 1076:Arthur Carl Victor Schott 650:Urosaurus ornatus ornatus 577:including states such as 512:interspecific competition 448:has a complicated social 429:, as the lizards mature. 217: 210: 187: 180: 72:Scientific classification 70: 48: 39: 30: 23: 1995:Parker, William (1973). 1883:Parker, William (1973). 1844:Parker, William (1973). 908:nominotypical subspecies 285:fight-or-flight response 225:Baird & Girard, 1852 2274:, Brodie ED Jr (1982). 1705:Dunham, Arthur (1980). 1170:Physiology and Behavior 532:Culberson County, Texas 462:life history strategies 339:reproductive strategies 2072:Gen. Comp. Endocrinol. 2001:Journal of Herpetology 1889:Journal of Herpetology 1850:Journal of Herpetology 1800:Journal of Herpetology 1617:Journal of Herpetology 1081:The subspecific name, 1070:The subspecific name, 1030:– northern tree lizard 995:– Big Bend tree lizard 681:anti-predator behavior 657: 640:Anti-predator behavior 535: 526:Big Bend tree lizard ( 480:Big Bend National Park 419:genetically determined 1711:Ecological Monographs 1552:Hormones and Behavior 1423:Hormones and Behavior 1124:: e.T64174A12750887. 647: 525: 427:phenotypic plasticity 349:Multiple male genders 2344:The Reptile Database 2326:, pp. 54, 155). 2290:, pp. 112–113). 977:– smooth tree lizard 441:Population structure 298:snout-to-vent length 2318:, Smith HM (1956). 2007:(1). JSTOR: 21–26. 1973:(2). JSTOR: 91–94. 1895:(1). JSOTR: 21–26. 1856:(1). JSOTR: 21–26. 1717:(3). esa: 309–330. 1249:1994Oecol.100..243L 1087:Albert Hazen Wright 1041:trinomial authority 986:– lined tree lizard 928:– Texas tree lizard 835:reproductive system 765:Female reproduction 679:The differences in 648:Texas tree lizard ( 498:Sceloporus merriami 42:Conservation status 2583:Reptiles of Mexico 2212:, King FW (1979). 2040:Functional Ecology 2034:French, S (2007). 1623:(1). JSTOR: 7–13. 1576:Functional Ecology 1326:American Zoologist 1257:10.1007/BF00316951 745:its availability. 658: 654:Kerr County, Texas 536: 469:Effects of habitat 258:ornate tree lizard 2560: 2559: 2396:Urosaurus ornatus 2366:Urosaurus ornatus 2358:Taxon identifiers 2339:Urosaurus ornatus 2324:Urosaurus ornatus 2310:Urosaurus ornatus 2306:978-0-395-98272-3 2288:Urosaurus ornatus 2266:Urosaurus ornatus 2262:978-0-544-12997-9 2240:Urosaurus ornatus 2226:Urosaurus ornatus 2161:978-1-4214-0135-5 2128:Urosaurus ornatus 2108:Urosaurus ornatus 2088:Urosaurus ornatus 2068:Urosaurus ornatus 1419:Urosaurus ornatus 1396:Urosaurus ornatus 1372:Urosaurus ornatus 1287:Urosaurus ornatus 1233:Urosaurus ornatus 1212:Urosaurus ornatus 1156:Urosaurus ornatus 1110:Urosaurus ornatus 1012:U. o. symmetricus 993:(Mittleman, 1940) 944:U. o. chiricahuae 812:Male reproduction 806:ovarian follicles 742:Urosaurus ornatus 662:Usosaurus ornatus 539:Urosaurus ornatus 446:Urosaurus ornatus 375:Speed and stamina 279:and northwestern 249:Urosaurus ornatus 245: 244: 230:Urosaurus ornatus 191:Urosaurus ornatus 65: 25:Urosaurus ornatus 16:Species of lizard 2615: 2553: 2552: 2543: 2542: 2530: 2529: 2517: 2516: 2504: 2503: 2491: 2490: 2478: 2477: 2465: 2464: 2452: 2451: 2439: 2438: 2426: 2425: 2413: 2412: 2400: 2399: 2398: 2385: 2384: 2383: 2353: 2176: 2149: 2138: 2124: 2118: 2104: 2098: 2084: 2078: 2064: 2058: 2057: 2055: 2031: 2025: 2024: 1992: 1983: 1982: 1958: 1952: 1951: 1919: 1913: 1912: 1880: 1874: 1873: 1841: 1832: 1831: 1791: 1785: 1784: 1752: 1746: 1741: 1735: 1734: 1702: 1696: 1695: 1668:10.1002/jez.2216 1647: 1641: 1640: 1608: 1602: 1601: 1591: 1567: 1558: 1548: 1542: 1541: 1510:Animal Behaviour 1501: 1495: 1494: 1463:Animal Behaviour 1454: 1429: 1415: 1406: 1400:Animal Behaviour 1388: 1382: 1368: 1362: 1352: 1346: 1345: 1338: 1332: 1322: 1316: 1306: 1297: 1283: 1277: 1276: 1228: 1222: 1208: 1202: 1201: 1165: 1159: 1152: 1143: 1142: 1140: 1138: 1133: 1103: 1057:subspecific name 1029: 1016: 1003: 994: 985: 976: 964: 952: 940: 927: 868:steroid hormones 844:restrictive diet 776:sexual selection 700:binding capacity 518:Geographic range 415:social functions 355:Joan Roughgarden 343:sexual selection 239: 226: 193: 80: 79: 59: 54: 53: 35: 21: 2623: 2622: 2618: 2617: 2616: 2614: 2613: 2612: 2563: 2562: 2561: 2556: 2548: 2546: 2538: 2533: 2525: 2522:Observation.org 2520: 2512: 2507: 2499: 2494: 2486: 2481: 2473: 2468: 2460: 2455: 2447: 2442: 2434: 2429: 2421: 2416: 2408: 2403: 2394: 2393: 2388: 2379: 2378: 2373: 2360: 2349: 2333: 2185: 2183:Further reading 2180: 2179: 2150: 2141: 2125: 2121: 2105: 2101: 2097:(6): 2059-2062. 2085: 2081: 2065: 2061: 2033: 2032: 2028: 2013:10.2307/1562825 1994: 1993: 1986: 1960: 1959: 1955: 1921: 1920: 1916: 1901:10.2307/1562825 1882: 1881: 1877: 1862:10.2307/1562825 1843: 1842: 1835: 1812:10.2307/1565097 1793: 1792: 1788: 1754: 1753: 1749: 1742: 1738: 1723:10.2307/2937254 1704: 1703: 1699: 1662:(10): 527–535. 1649: 1648: 1644: 1629:10.2307/1565079 1610: 1609: 1605: 1569: 1568: 1561: 1549: 1545: 1503: 1502: 1498: 1456: 1455: 1432: 1416: 1409: 1389: 1385: 1369: 1365: 1353: 1349: 1340: 1339: 1335: 1323: 1319: 1307: 1300: 1284: 1280: 1230: 1229: 1225: 1209: 1205: 1167: 1166: 1162: 1153: 1146: 1136: 1134: 1105: 1104: 1100: 1095: 1065:Karl P. Schmidt 1053: 1023: 1014: 1001: 992: 983: 970: 958: 956:U. o. lateralis 946: 934: 932:U. o. caeruleus 917: 900: 887: 877:. Females have 860: 827: 814: 801:sexual maturity 767: 751: 713: 656:(18 April 2015) 642: 632:small or large 629: 616: 608:breeding season 603: 520: 471: 443: 394: 377: 351: 326: 294: 273:Phrynosomatidae 233: 232: 224: 223: 206: 195: 189: 176: 173:U. ornatus 149:Phrynosomatidae 74: 66: 55: 51: 44: 17: 12: 11: 5: 2621: 2619: 2611: 2610: 2605: 2600: 2595: 2590: 2585: 2580: 2575: 2565: 2564: 2558: 2557: 2555: 2554: 2544: 2531: 2518: 2505: 2492: 2479: 2466: 2453: 2440: 2427: 2414: 2401: 2386: 2370: 2368: 2362: 2361: 2356: 2347: 2346: 2332: 2331:External links 2329: 2328: 2327: 2313: 2291: 2269: 2243: 2229: 2207: 2184: 2181: 2178: 2177: 2169:U. o. schottii 2139: 2119: 2099: 2079: 2059: 2026: 1984: 1953: 1914: 1875: 1833: 1806:(1): 126–129. 1786: 1767:(1): 208–221. 1747: 1736: 1697: 1642: 1603: 1582:(3): 338–344. 1559: 1543: 1516:(2): 395–401. 1496: 1469:(5): 745–753. 1430: 1407: 1383: 1363: 1347: 1333: 1317: 1298: 1278: 1223: 1203: 1176:(5): 639–647. 1160: 1144: 1097: 1096: 1094: 1091: 1052: 1049: 1032: 1031: 1018: 1009: 999:U. o. schottii 996: 990:U. o. schmidti 987: 981:U. o. linearis 978: 965: 953: 941: 929: 899: 896: 886: 883: 863:Territoriality 859: 858:Territoriality 856: 826: 823: 813: 810: 766: 763: 750: 747: 712: 709: 685:plasma binding 670:corticosterone 641: 638: 628: 625: 615: 612: 602: 599: 519: 516: 470: 467: 442: 439: 393: 390: 376: 373: 364:corticosterone 350: 347: 325: 322: 293: 290: 243: 242: 241: 240: 227: 215: 214: 208: 207: 196: 185: 184: 178: 177: 170: 168: 164: 163: 156: 152: 151: 146: 142: 141: 136: 132: 131: 126: 122: 121: 116: 112: 111: 106: 102: 101: 96: 92: 91: 86: 82: 81: 68: 67: 49: 46: 45: 40: 37: 36: 28: 27: 15: 13: 10: 9: 6: 4: 3: 2: 2620: 2609: 2606: 2604: 2601: 2599: 2596: 2594: 2591: 2589: 2586: 2584: 2581: 2579: 2576: 2574: 2571: 2570: 2568: 2551: 2545: 2541: 2536: 2532: 2528: 2523: 2519: 2515: 2510: 2506: 2502: 2497: 2493: 2489: 2484: 2480: 2476: 2471: 2467: 2463: 2458: 2454: 2450: 2445: 2441: 2437: 2432: 2428: 2424: 2419: 2415: 2411: 2406: 2402: 2397: 2391: 2387: 2382: 2376: 2372: 2371: 2369: 2367: 2363: 2359: 2354: 2350: 2345: 2341: 2340: 2335: 2334: 2330: 2325: 2321: 2317: 2314: 2311: 2307: 2303: 2299: 2295: 2292: 2289: 2285: 2284:0-307-13666-3 2281: 2277: 2273: 2270: 2267: 2263: 2259: 2255: 2251: 2247: 2244: 2241: 2237: 2233: 2230: 2227: 2223: 2222:0-394-50824-6 2219: 2215: 2211: 2208: 2205: 2201: 2198: 2194: 2190: 2187: 2186: 2182: 2174: 2173:U. o. wrighti 2170: 2166: 2162: 2158: 2154: 2148: 2146: 2144: 2140: 2136: 2133: 2129: 2123: 2120: 2117:(4): 387-394. 2116: 2113: 2112:Herpetologica 2109: 2103: 2100: 2096: 2093: 2089: 2083: 2080: 2077:(2): 282–288. 2076: 2073: 2069: 2063: 2060: 2054: 2049: 2045: 2041: 2037: 2030: 2027: 2022: 2018: 2014: 2010: 2006: 2002: 1998: 1991: 1989: 1985: 1980: 1976: 1972: 1968: 1967:Herpetologica 1964: 1957: 1954: 1949: 1945: 1941: 1937: 1933: 1929: 1928:Herpetologica 1925: 1918: 1915: 1910: 1906: 1902: 1898: 1894: 1890: 1886: 1879: 1876: 1871: 1867: 1863: 1859: 1855: 1851: 1847: 1840: 1838: 1834: 1829: 1825: 1821: 1817: 1813: 1809: 1805: 1801: 1797: 1790: 1787: 1782: 1778: 1774: 1770: 1766: 1762: 1761:Herpetologica 1758: 1751: 1748: 1745: 1740: 1737: 1732: 1728: 1724: 1720: 1716: 1712: 1708: 1701: 1698: 1693: 1689: 1685: 1681: 1677: 1673: 1669: 1665: 1661: 1657: 1653: 1646: 1643: 1638: 1634: 1630: 1626: 1622: 1618: 1614: 1607: 1604: 1599: 1595: 1590: 1585: 1581: 1577: 1573: 1566: 1564: 1560: 1556: 1553: 1547: 1544: 1539: 1535: 1531: 1527: 1523: 1519: 1515: 1511: 1507: 1500: 1497: 1492: 1488: 1484: 1480: 1476: 1472: 1468: 1464: 1460: 1453: 1451: 1449: 1447: 1445: 1443: 1441: 1439: 1437: 1435: 1431: 1427: 1424: 1420: 1414: 1412: 1408: 1405:(5): 745-753. 1404: 1401: 1397: 1393: 1387: 1384: 1381:(2): 493-503. 1380: 1377: 1373: 1367: 1364: 1360: 1356: 1351: 1348: 1343: 1337: 1334: 1330: 1327: 1321: 1318: 1314: 1311: 1305: 1303: 1299: 1296:(1): 148-156. 1295: 1292: 1288: 1282: 1279: 1274: 1270: 1266: 1262: 1258: 1254: 1250: 1246: 1242: 1238: 1234: 1227: 1224: 1220: 1217: 1213: 1207: 1204: 1199: 1195: 1191: 1187: 1183: 1179: 1175: 1171: 1164: 1161: 1157: 1151: 1149: 1145: 1132: 1127: 1123: 1119: 1118: 1113: 1111: 1102: 1099: 1092: 1090: 1088: 1084: 1079: 1077: 1073: 1068: 1066: 1062: 1058: 1050: 1048: 1046: 1042: 1038: 1037: 1027: 1022: 1021:U. o. wrighti 1019: 1015:(Baird, 1858) 1013: 1010: 1007: 1002:(Baird, 1858) 1000: 997: 991: 988: 984:(Baird, 1859) 982: 979: 974: 969: 966: 962: 957: 954: 950: 945: 942: 938: 933: 930: 925: 921: 916: 915:U. o. ornatus 913: 912: 911: 909: 905: 897: 895: 892: 884: 882: 880: 876: 872: 869: 864: 857: 855: 853: 849: 845: 840: 839:immune system 836: 832: 824: 822: 819: 811: 809: 807: 802: 798: 794: 788: 786: 782: 777: 773: 764: 762: 760: 756: 748: 746: 743: 739: 735: 734:Lepidopterous 731: 727: 723: 718: 710: 708: 706: 701: 697: 693: 689: 686: 682: 677: 675: 671: 667: 663: 655: 651: 646: 639: 637: 635: 626: 624: 622: 613: 611: 609: 600: 598: 594: 592: 588: 584: 580: 576: 572: 568: 564: 560: 556: 552: 548: 544: 540: 534:(14 May 2018) 533: 529: 524: 517: 515: 513: 509: 504: 500: 499: 494: 490: 485: 484:precipitation 481: 475: 468: 466: 463: 459: 455: 451: 447: 440: 438: 435: 430: 428: 424: 420: 416: 411: 407: 403: 399: 391: 389: 386: 382: 374: 372: 369: 365: 360: 356: 348: 346: 344: 340: 335: 334:social status 331: 323: 321: 319: 315: 311: 307: 303: 299: 291: 289: 286: 282: 278: 274: 271: 267: 263: 259: 256:known as the 255: 251: 250: 237: 231: 228: 222: 219: 218: 216: 213: 209: 204: 200: 194: 192: 186: 183: 182:Binomial name 179: 175: 174: 169: 166: 165: 162: 161: 157: 154: 153: 150: 147: 144: 143: 140: 137: 134: 133: 130: 127: 124: 123: 120: 117: 114: 113: 110: 107: 104: 103: 100: 97: 94: 93: 90: 87: 84: 83: 78: 73: 69: 63: 58: 57:Least Concern 47: 43: 38: 34: 29: 26: 22: 19: 2365: 2348: 2337: 2323: 2319: 2309: 2297: 2287: 2275: 2265: 2253: 2248:, Conant R, 2239: 2235: 2225: 2213: 2203: 2202:: 125-129. ( 2199: 2196: 2172: 2168: 2164: 2152: 2134: 2131: 2127: 2122: 2114: 2111: 2107: 2102: 2094: 2091: 2087: 2082: 2074: 2071: 2067: 2062: 2043: 2039: 2029: 2004: 2000: 1970: 1966: 1956: 1934:(2): 91–94. 1931: 1927: 1917: 1892: 1888: 1878: 1853: 1849: 1803: 1799: 1789: 1764: 1760: 1750: 1739: 1714: 1710: 1700: 1659: 1655: 1645: 1620: 1616: 1606: 1579: 1575: 1554: 1551: 1546: 1513: 1509: 1499: 1466: 1462: 1425: 1422: 1418: 1402: 1399: 1395: 1386: 1378: 1375: 1371: 1366: 1358: 1350: 1336: 1328: 1325: 1320: 1312: 1309: 1293: 1290: 1286: 1281: 1243:(3): 243–9. 1240: 1236: 1232: 1226: 1218: 1215: 1211: 1206: 1173: 1169: 1163: 1155: 1135:. Retrieved 1121: 1115: 1109: 1101: 1082: 1080: 1071: 1069: 1060: 1054: 1044: 1034: 1033: 1020: 1011: 998: 989: 980: 967: 955: 943: 931: 914: 901: 888: 875:progesterone 871:testosterone 861: 828: 815: 789: 768: 754: 752: 749:Reproduction 741: 714: 696:target cells 678: 666:testosterone 661: 659: 652:), in situ, 649: 630: 617: 604: 595: 538: 537: 530:), in situ, 527: 502: 496: 476: 472: 445: 444: 431: 395: 378: 368:testosterone 359:progesterone 352: 327: 305: 295: 257: 248: 247: 246: 229: 220: 190: 188: 172: 171: 159: 24: 18: 2496:NatureServe 2444:iNaturalist 2390:Wikispecies 2294:Stebbins RC 1355:Stebbins RC 1137:11 November 1051:Etymologies 1008:tree lizard 968:U. o. levis 894:presented. 879:home ranges 831:competition 799:will reach 785:dryer years 753:A group of 423:polymorphic 406:Monomorphic 398:development 330:hierarchies 324:Hierarchies 310:Verde River 2567:Categories 2250:Collins JT 2204:Uta ornata 2175:, p. 289). 2171:, p. 237; 2167:, p. 236; 1331:: 133-151. 1315:: 371-380. 1221:: 289-299. 1093:References 937:H.M. Smith 904:subspecies 898:Subspecies 797:hatchlings 755:U. ornatus 738:Coleoptera 726:Formicidae 627:Locomotion 567:New Mexico 543:California 503:U. ornatus 434:hatchlings 306:U. ornatus 292:Appearance 221:Uta ornata 135:Suborder: 2578:Urosaurus 2210:Behler JL 1940:0018-0831 1820:0022-1511 1773:0018-0831 1676:2471-5646 1598:1365-2435 1557:: 96-115. 1530:0003-3472 1483:0003-3472 1237:Oecologia 1045:Urosaurus 1036:Nota bene 973:Stejneger 961:Boulenger 949:Mittleman 852:malleable 781:wet years 730:Hemiptera 722:Homoptera 688:globulins 621:adulthood 587:Chihuahua 493:stressors 450:hierarchy 410:ontogenic 385:locomotor 236:Mittleman 167:Species: 160:Urosaurus 95:Kingdom: 89:Eukaryota 2501:2.101381 2462:10970041 2381:Q3062093 2375:Wikidata 2336:Species 2296:(2003). 2272:Smith HM 2252:(2016). 2246:Powell R 2234:(1975). 2232:Conant R 2193:Girard C 2189:Baird SF 2132:PLoS ONE 1692:51956358 1684:30096219 1538:53172084 1491:54254043 1428:: 83-92. 1357:(2003). 1265:28307007 1198:40870214 1072:schottii 1061:schmidti 1006:Schott's 848:tradeoff 793:latitude 634:boulders 591:Coahuila 555:Colorado 508:rainfall 501:and the 402:Juvenile 254:commonly 212:Synonyms 145:Family: 129:Squamata 119:Reptilia 109:Chordata 105:Phylum: 99:Animalia 85:Domain: 62:IUCN 3.1 2550:8061697 2540:ornatus 2436:2451482 2423:1055103 2092:Ecology 2021:1562825 1979:3890577 1948:3890577 1909:1562825 1870:1562825 1828:1565097 1781:3892374 1731:2937254 1637:1565079 1392:signals 1273:3226827 1245:Bibcode 1190:9145930 1083:wrighti 1028:, 1921) 1026:Schmidt 975:, 1890) 963:, 1883) 951:, 1941) 939:, 1935) 926:, 1852) 772:fitness 717:insects 583:Sinaloa 563:Arizona 559:Wyoming 381:stamina 314:Arizona 302:abdomen 268:in the 262:species 260:, is a 205:, 1852) 155:Genus: 139:Iguania 125:Order: 115:Class: 60: ( 2547:uBio: 2527:104336 2475:173954 2316:Zim HS 2304:  2282:  2260:  2220:  2159:  2019:  1977:  1946:  1938:  1907:  1868:  1826:  1818:  1779:  1771:  1729:  1690:  1682:  1674:  1635:  1596:  1536:  1528:  1489:  1481:  1376:Copeia 1271:  1263:  1196:  1188:  924:Girard 922:& 891:gravid 818:testes 732:, and 614:Growth 589:, and 579:Sonora 575:Mexico 569:, and 547:Nevada 318:dewlap 281:Mexico 270:family 266:lizard 238:, 1942 203:Girard 201:& 2514:43650 2488:64174 2457:IRMNG 2449:36107 2410:7DZ38 2017:JSTOR 1975:JSTOR 1944:JSTOR 1905:JSTOR 1866:JSTOR 1824:JSTOR 1777:JSTOR 1727:JSTOR 1688:S2CID 1633:JSTOR 1534:S2CID 1487:S2CID 1269:S2CID 1194:S2CID 920:Baird 660:Male 571:Texas 489:lipid 199:Baird 2509:NCBI 2483:IUCN 2470:ITIS 2431:GBIF 2302:ISBN 2280:ISBN 2258:ISBN 2218:ISBN 2157:ISBN 1936:ISSN 1816:ISSN 1769:ISSN 1680:PMID 1672:ISSN 1594:ISSN 1526:ISSN 1479:ISSN 1379:1991 1261:PMID 1235:)". 1186:PMID 1139:2021 1122:2007 1055:The 1039:: A 902:Ten 873:and 837:and 759:eggs 711:Diet 668:and 601:Size 551:Utah 2418:EoL 2405:CoL 2342:at 2308:. 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Index


Conservation status
Least Concern
IUCN 3.1
Scientific classification
Edit this classification
Eukaryota
Animalia
Chordata
Reptilia
Squamata
Iguania
Phrynosomatidae
Urosaurus
Binomial name
Baird
Girard
Synonyms
Mittleman
commonly
species
lizard
family
Phrynosomatidae
southwestern United States
Mexico
fight-or-flight response
snout-to-vent length
abdomen
Verde River

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