Is the Dewlap an Honest Signal of Fighting Ability in the Male Green Anole (Anolis Carolinensis)? PDF Download
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Author: Alexia Hughes Publisher: ISBN: Category : Aggressive behavior in animals Languages : en Pages : 0
Book Description
Signals are morphological or behavioral traits that an individual uses to influence the behavior or actions of another. These signals can be used in male-male competition, in which male secondary sexual traits act as a signal of his fighting ability. Animal signals are considered honest when the signal reliably indicates a specific trait or condition of the individual. The genus Anolis, comprised of over 400 species that occupy the tropics and the southeastern United States, utilize aggressive signaling prior to physical combat. Research on several tropical species of anole indicates that the size of their dewlap can act as an honest signal of their fighting ability, as dewlap size is correlated with the chance of an individual winning in combat. No studies of this nature, however, have been done for the green anole, Anolis carolinensis. In this study, I measured the size of adult male green anole's dewlaps, their bite forces, and performed dyadic interactions between two males matched for body size to determine if the dewlap can be considered an honest signal of fighting ability. I found that dewlap size, mean bite force, and maximum bite force did not differ between winners and losers of dyadic interactions. However, latency to bite did differ between winners and losers, and there was a predictive relationship between dewlap size and latency to bite. These results could be explained by the different personalities of male green anoles, specifically regarding an individual's level of boldness. Being bold in a high-risk situation, such as in male-male competition, is dangerous for an individual and comes with the chance of injury or death. The dewlap of the male green anole could potentially act as an honest signal of his cautiousness, and his hesitancy to engage in male-male competition, but also his confidence in his capacity to defeat his opponent if the conflict reaches the actual combat stage. -- Abstract, leaves i-ii
Author: Alexia Hughes Publisher: ISBN: Category : Aggressive behavior in animals Languages : en Pages : 0
Book Description
Signals are morphological or behavioral traits that an individual uses to influence the behavior or actions of another. These signals can be used in male-male competition, in which male secondary sexual traits act as a signal of his fighting ability. Animal signals are considered honest when the signal reliably indicates a specific trait or condition of the individual. The genus Anolis, comprised of over 400 species that occupy the tropics and the southeastern United States, utilize aggressive signaling prior to physical combat. Research on several tropical species of anole indicates that the size of their dewlap can act as an honest signal of their fighting ability, as dewlap size is correlated with the chance of an individual winning in combat. No studies of this nature, however, have been done for the green anole, Anolis carolinensis. In this study, I measured the size of adult male green anole's dewlaps, their bite forces, and performed dyadic interactions between two males matched for body size to determine if the dewlap can be considered an honest signal of fighting ability. I found that dewlap size, mean bite force, and maximum bite force did not differ between winners and losers of dyadic interactions. However, latency to bite did differ between winners and losers, and there was a predictive relationship between dewlap size and latency to bite. These results could be explained by the different personalities of male green anoles, specifically regarding an individual's level of boldness. Being bold in a high-risk situation, such as in male-male competition, is dangerous for an individual and comes with the chance of injury or death. The dewlap of the male green anole could potentially act as an honest signal of his cautiousness, and his hesitancy to engage in male-male competition, but also his confidence in his capacity to defeat his opponent if the conflict reaches the actual combat stage. -- Abstract, leaves i-ii
Author: Raymond E. Hunziker Publisher: TFH Publications ISBN: 9780793810215 Category : Pets Languages : en Pages : 68
Book Description
With quick and easy instructions, Green Anole Care will help you set up your green anole's terrarium and provide you with all the necessary information you need to know to keep your new pet healthy and happy. Plus, you'll get information on several different and interesting anole species. Accompanied by quick tip boxes and full-color photos, Green Anole Care ensures a great start with your lizard and a longer, happier life for your pet. Book jacket.
Author: Barr Terek Powell Publisher: Independently Published ISBN: Category : Pets Languages : en Pages : 0
Book Description
Anoles are a fascinating and diverse group of lizards belonging to the family Dactyloidae. This family includes over 400 species, with some of the most well-known being the Green Anole (Anolis carolinensis), the Brown Anole (Anolis sagrei), and the Knight Anole (Anolis equestris). These reptiles are native to the warmer regions of the Americas, ranging from the southeastern United States through the Caribbean and Central America, down to South America. They thrive in tropical and subtropical climates, where they can be found in a variety of habitats including forests, shrublands, and urban areas. Anoles are small to medium-sized lizards, typically measuring between 5 to 8 inches in length, although some species can grow larger. They are characterized by their slender bodies, long tails, and distinctive dewlaps-flap-like structures of skin that hang beneath the throat. These dewlaps are often brightly colored and are used for communication, particularly in territorial displays and mating rituals. The Green Anole, for instance, has a vibrant pink dewlap, which it extends to assert dominance or attract a mate. One of the most remarkable features of anoles is their ability to change color, a trait often associated with the Green Anole. Contrary to popular belief, this color change is not primarily used for camouflage, but rather for communication and thermoregulation. For example, a Green Anole may change from bright green to brown when it is stressed, cold, or trying to communicate with other anoles. Anoles are arboreal creatures, meaning they spend most of their time in trees and shrubs. They are equipped with specialized toe pads that allow them to cling to vertical surfaces, making them agile climbers. This arboreal lifestyle is complemented by their diet, which consists mainly of insects and other small invertebrates. Anoles are active hunters, using their keen eyesight to spot prey before swiftly capturing it with their sticky tongues.
Author: Dr Peters Joe Publisher: ISBN: Category : Languages : en Pages : 34
Book Description
Green anoles are the best variety of anole neighborhood to the United States; they can be found inside the wild in Tennessee, Louisiana, Georgia, Florida, the Carolinas, and Texas. Green anoles are well known and make great "starter" pets for kids. These very little reptiles have emerald-green backs and pink "dewlaps" (pockets underneath their jaws). An infrequent anole can likewise really have a blue color. Anoles are amusing to watch, as they're vigorous all through the sunlight hours and like to climb. One in their top of the line credits is their ability to have cooperation with their human proprietors; many are happy to eat up from their proprietors' hands. While it is high-caliber to get an anole (and many appreciate roosting on a human shoulder), it's vital to avoid getting them by methods for the tail. Rather, train youths to choose them up with the guide of setting a hand under the reptile's gut. In this book, you will know more about green anoles and its interactions.
Author: Francis Kin Publisher: ISBN: Category : Languages : en Pages : 28
Book Description
Green anoles are the most sold pet reptiles on the planet. Albeit a strong animal groups, they have certain necessities which must be met in the event that they are to live long haul. This top rated book remains the best regarding the matter introducing in detail vivarium configuration, taking care of, supplementation and rearing. Different types of anoles are secured including Cuban knight anoles, Bahaman earthy colored and Jamaican anoles. Delineated with many shading photographs and representations.Green Anoles are to be had at neighborhood puppy shops, chain puppy save shops and from online dealers at very lower priced prices. Male inexperienced anoles may grow to 8 inches, whilst ladies seldom exceed 5 to six inches. Young hatch at three-quarters to 1 inch in period. With a SVL (snout-to-vent duration) of a massive person male being roughly four inches.this book will guide you on how to care perfectly for your green anole pet.
Author: G. H. Parker Publisher: Forgotten Books ISBN: 9781334416101 Category : Science Languages : en Pages : 28
Book Description
Excerpt from The Effect of Heat on the Color Changes in the Skin of Anolis Carolinensis Cuv Nevertheless, since all our experiments had been carried on with more or less change of temperature, it was necessary to check this before any sound conclusions could be drawn as to other factors. On December 30, with the temperature in the box varying from 22 C. Just before the experiments were begun to 27 at the close of them, the average time of twenty records at various intermediate temperatures was minutes, while at 27 it was 12 minutes. Therefore, notwithstanding the Opinion of many investigators that temperature plays little or no part in the color changes of lizards and other lower vertebrates, we determined to test the in uence of heat on Anolis, and the results obtained are given on the following pages. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works."
Author: Alexia Hughes
Author: Alexia Hughes
Author: 
Author: Raymond E. Hunziker
Author: Barr Terek Powell
Author: Philippe de Vosjoli
Author: Jon Coote
Author: Dr Peters Joe
Author: Francis Kin
Author: G. H. Parker
Author: Ray Hunziker