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Spend a day hiking in the Sonoran Desert, and you may spot an unusual sight: a lizard sprinting on two legs! Collared lizards reach speeds of up to 16 miles per hour while racing on their hind legs to catch prey or escape predators. Eye-catching photos, fascinating facts, and explanations of adaptations will keep young readers glued to the pages of Collared Lizards!
Book Synopsis Collared Lizards by : Patrick Perish
Download or read book Collared Lizards written by Patrick Perish and published by Bellwether Media. This book was released on 2019-01-01 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt: Spend a day hiking in the Sonoran Desert, and you may spot an unusual sight: a lizard sprinting on two legs! Collared lizards reach speeds of up to 16 miles per hour while racing on their hind legs to catch prey or escape predators. Eye-catching photos, fascinating facts, and explanations of adaptations will keep young readers glued to the pages of Collared Lizards!
The Eastern Collared Lizard (Crotaphytus collaris) has experienced extensive population declines over the past half century in the Ozark Mountains. Previous research suggests that glade habitat degradation through woody vegetation encroachment is an important factor resulting in population declines. In this dissertation I used information on time-energy budgets to investigate the link between habitat degradation and shifts in life history traits likely resulting in population declines of Eastern Collared Lizards (Crotaphytus collaris) in the Ozarks. In chapter one, I addressed the influence of dense woody vegetation encroachment on age-specific growth, body size, body condition and reproduction of C. collaris in northern Arkansas. Results from chapter one suggested that populations in encroached glades (defined by dense woody vegetation encroachment) experienced reduced body growth rates, delayed age of maturity, reduced clutch sizes and a nearly 50% decline in annual population fecundity rates. In chapter two, I investigated the role of behavior (postural adjustment) on the thermal ecology estimates of surface-active lizards using thermal data of C. collaris in one of my study populations. I used the data in chapter two to determine the most suitable methodologies to investigate the thermal ecology of C. collaris in northern Arkansas. In chapter three, I investigated the thermal sensitivity of digestion in C. collaris. Results in chapter three suggested that C. collaris digestion performance is affected by temperature, primarily through effects on passage times and voluntary feeding rates. In chapter four, I used results from the previous three chapters to erect several mechanistic hypotheses aimed at identifying the link between glade encroachment and reduced reproductive rates in C. collaris. Data in chapter four suggest C. collaris in encroached glades experience reduced environmental heat loads, shorter activity-times and less time-at-temperature suitable for digestive processing. The reduction in time-at-temperature for digestive processing resulted in lower energy available for growth and reproduction (4̃1%), which led to a near 50% decline in energy devoted to reproduction (# of eggs). Results from this dissertation provide a compelling explanation to the mechanisms causing a shift in life history traits that appear to play an important role in population declines of C. collaris in the Ozarks.
Book Synopsis Eastern Collared Lizard (crotaphytus Collaris) Population Declines in Ozark Landscapes by : Casey Lee Brewster
Download or read book Eastern Collared Lizard (crotaphytus Collaris) Population Declines in Ozark Landscapes written by Casey Lee Brewster and published by . This book was released on 2019 with total page 298 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Eastern Collared Lizard (Crotaphytus collaris) has experienced extensive population declines over the past half century in the Ozark Mountains. Previous research suggests that glade habitat degradation through woody vegetation encroachment is an important factor resulting in population declines. In this dissertation I used information on time-energy budgets to investigate the link between habitat degradation and shifts in life history traits likely resulting in population declines of Eastern Collared Lizards (Crotaphytus collaris) in the Ozarks. In chapter one, I addressed the influence of dense woody vegetation encroachment on age-specific growth, body size, body condition and reproduction of C. collaris in northern Arkansas. Results from chapter one suggested that populations in encroached glades (defined by dense woody vegetation encroachment) experienced reduced body growth rates, delayed age of maturity, reduced clutch sizes and a nearly 50% decline in annual population fecundity rates. In chapter two, I investigated the role of behavior (postural adjustment) on the thermal ecology estimates of surface-active lizards using thermal data of C. collaris in one of my study populations. I used the data in chapter two to determine the most suitable methodologies to investigate the thermal ecology of C. collaris in northern Arkansas. In chapter three, I investigated the thermal sensitivity of digestion in C. collaris. Results in chapter three suggested that C. collaris digestion performance is affected by temperature, primarily through effects on passage times and voluntary feeding rates. In chapter four, I used results from the previous three chapters to erect several mechanistic hypotheses aimed at identifying the link between glade encroachment and reduced reproductive rates in C. collaris. Data in chapter four suggest C. collaris in encroached glades experience reduced environmental heat loads, shorter activity-times and less time-at-temperature suitable for digestive processing. The reduction in time-at-temperature for digestive processing resulted in lower energy available for growth and reproduction (4̃1%), which led to a near 50% decline in energy devoted to reproduction (# of eggs). Results from this dissertation provide a compelling explanation to the mechanisms causing a shift in life history traits that appear to play an important role in population declines of C. collaris in the Ozarks.
Describes the physical characteristics, behavior, and environment of collared lizards.
Book Synopsis Collared Lizard by : Karen Ang
Download or read book Collared Lizard written by Karen Ang and published by Bearport Publishing Company Incorporated. This book was released on 2015 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt: Describes the physical characteristics, behavior, and environment of collared lizards.
Book Synopsis An Ecological Study of the Collared Lizard (Crotaphytus Collaris). by : Henry Sheldon Fitch
Download or read book An Ecological Study of the Collared Lizard (Crotaphytus Collaris). written by Henry Sheldon Fitch and published by . This book was released on 1956 with total page 274 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Relevant images match informative text in this introduction to collared lizards. Intended for students in kindergarten through third grade.
Book Synopsis Collared Lizards by : Patrick Perish
Download or read book Collared Lizards written by Patrick Perish and published by . This book was released on 2019 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt: Relevant images match informative text in this introduction to collared lizards. Intended for students in kindergarten through third grade.
The collared lizard (Crotaphytus collaris) is distinguished by the two black collars around its neck. Adult males have bright green scales as well as tan, olive, brown, bluish and yellow scales. Females are less colorful than the males. Both have whitish bellies and large heads. Collared lizards are one of only a few lizards that are able to run using only their hind legs. They are very fast with a stride up to three times their body length. They also do not lose their tail very easily, but if they do, it does not grow back.In this book, you will know more about collared lizards and its interactions
Book Synopsis Breeding Collared Lizards as Pets by : Dr Pius Raham
Download or read book Breeding Collared Lizards as Pets written by Dr Pius Raham and published by . This book was released on 2020-07-08 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt: The collared lizard (Crotaphytus collaris) is distinguished by the two black collars around its neck. Adult males have bright green scales as well as tan, olive, brown, bluish and yellow scales. Females are less colorful than the males. Both have whitish bellies and large heads. Collared lizards are one of only a few lizards that are able to run using only their hind legs. They are very fast with a stride up to three times their body length. They also do not lose their tail very easily, but if they do, it does not grow back.In this book, you will know more about collared lizards and its interactions
Book Synopsis Ecological Observations of the Eastern Collared Lizard, C̲r̲o̲t̲a̲p̲h̲y̲t̲u̲s̲ C̲o̲l̲l̲a̲r̲i̲s̲ C̲o̲l̲l̲a̲r̲i̲s̲ (Say), in Northcentral Arkansas by : Chris Thomas McAllister
Download or read book Ecological Observations of the Eastern Collared Lizard, C̲r̲o̲t̲a̲p̲h̲y̲t̲u̲s̲ C̲o̲l̲l̲a̲r̲i̲s̲ C̲o̲l̲l̲a̲r̲i̲s̲ (Say), in Northcentral Arkansas written by Chris Thomas McAllister and published by . This book was released on 1980 with total page 248 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Variation in local populations of the collared lizard, Crotaphytus collaris by : Hague Leland Lindsay
Download or read book Variation in local populations of the collared lizard, Crotaphytus collaris written by Hague Leland Lindsay and published by . This book was released on 1951 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Collared Lizard by : Delbert Dwight Davis
Download or read book The Collared Lizard written by Delbert Dwight Davis and published by . This book was released on 1934 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A Taxonomic Study of the Western Collared Lizard (Crotaphytus Collaris). by : Nathan Mckay Smith
Download or read book A Taxonomic Study of the Western Collared Lizard (Crotaphytus Collaris). written by Nathan Mckay Smith and published by . This book was released on 1972 with total page 202 pages. Available in PDF, EPUB and Kindle. Book excerpt: