Product Description
The Anolis lizards of the Caribbean are ideally suited for the study of evolutionary ecology.Offering fascinating insights into the more than 150 species dispersed throughout the Caribbean islands, Jonathan Roughgarden details the differences between species in a wide range of behavioral and physical characteristics, including foraging behaviors, body size, and habitat use, resulting from evolutionary divergences concurrent with the plate-tectonic origins of the region.This book will be of interest to students and researchers--ecology and theoretical, tropical, and population biology. ... Read more

Customer Reviews (2)

Very technical work indeed
A full one-half of the book is devoted to a highly technical, theoretical approach to predicting the ecological behavior in these anoles in the Lesser Antilles. Mathematical formulae and computer language are used. A very technical, biological treatise involving some (much) sophisticated understanding of the subject and subject area. This is not a book for the general public and for the hobbyist herpetoculturist.

The Reveiwed
This book is GREAT! This book tells you alot about the earth and some of the animals. I'd recommend this book to people who want to learn about the earth. ... Read more

Product Description
Chapters: Dominican Anole, List of Anolis Lizards, Polychrotidae, Carolina Anole, Norops, Brown Anole, Puerto Rican Crested Anole, Anguilla Bank Anole, Knight Anole, Culebra Island Giant Anole, Saban Anole, Barbados Anole, Panther Anole, Sharp-Mouthed Lizard, Bearded Anole, Polychrus, Blue Anole, Dwarf Anole, Hispaniolan Green Anole, Phenacosaurus, Large-Headed Anole, Norops Serranoi, Anolis Distichus, Cuban Green Anole, Neotropical Green Anole, Allison's Anole, Many-Scaled Anole, Jamaican Giant Anole, Phenacosaurus Vanzolinii, West Cuban Anole, Western Bearded Anole, Leopard Anole. Source: Wikipedia. Pages: 113. Not illustrated. Free updates online. Purchase includes a free trial membership in the publisher's book club where you can select from more than a million books without charge. Excerpt: (Disfavored; see text)A. oculatus oculatusA. o. cabritensisA. o. montanusA. o. winstoni The Dominican Anole or Eyed Anole (Anolis oculatus) is a species of anole lizard. It is endemic to the Caribbean island of Dominica, where it is found in most environments. Its appearance and size vary widely between populations in different habitats. Its ground color ranges from pale tan or yellow to deep green or brown. It has patterned markings that range from light-colored speckling to complex marbled patterns, and some populations additionally have large black-ringed spots on their flanks. This variability once caused confusion as to whether it comprised multiple species or one, and has been the subject of numerous studies. Four subspecies have been described, but research has revealed clinal variations between populations in adaptation to the diverse local ecological conditions found on Dominica. Researchers have accordingly disfavored the earlier subspecies divisions in favor of ecotype descriptions. Though presently widespread and common on Dominica, it faces competition from an invasive species, the Puerto Rican Crested Anole, that has ...More: http://booksllc.net/?id=26020800 ... Read more

Product Description
This digital document is a journal article from Hormones and Behavior, published by Elsevier in 2004. The article is delivered in HTML format and is available in your Amazon.com Media Library immediately after purchase. You can view it with any web browser.

Description:
Male green anole lizards court females using a red throat fan (dewlap) and copulate by intromitting one of two penises (hemipenes). These structures begin sexually monomorphic, but by adulthood males have larger dewlaps, only males have hemipenes, and many of the neuromuscular components of both systems show male-biased dimorphisms. We hypothesized that testosterone (T), which increases in juvenile males but not females about a month after hatching, facilitates masculinization. To test this idea, on post-hatching day 30, gonadally intact females received either a blank or T implant, and males were either castrated or sham-castrated. At day 90, juveniles were euthanized and the length of the cartilage and cross-sectional areas of the muscle fibers and motoneurons required for dewlap extension were examined. We also measured the cross-sectional areas of the hemipenes and associated muscle fibers and motoneurons, and counted the motoneurons. T-treated females had longer cartilages and larger dewlap muscle fibers compared to those with blank implants. No effects on motoneurons were detected, and no females possessed hemipenes or associated musculature. In males, castration produced shorter dewlap cartilages and smaller hemipenes; other measures were not affected by treatment. These data indicate that components of the dewlap system differentiate relatively late in development, that T likely mediates the process, and that although components of the copulatory system are plastic in juvenile males, sexual differentiation of peripheral features is complete before day 30. The data also suggest that target structures (dewlap cartilage and hemipenes), compared to their neuromuscular effectors, are particularly sensitive to developmental T exposure. ... Read more