Journal ArticleDOI
The Ecological Significance of Sexual Dimorphism in Size in the Lizard Anolis conspersus.
Reads0
Chats0
TLDR
Anolis conspersus selects prey from a wide range of taxa and shows no obvious intraspecific specialization not connected to differences in microhabitat and prey size.Abstract:
Adult males of Anolis conspersus capture prey of significantly larger size and occupy perches of significantly greater diameter and height than do adult females; similarly, these three dimensions of the niche are significantly larger for adult females than for juveniles. Adult males on the average eat a smaller number of prey, and the range in size of prey is larger. The relationship between the average length of the prey and that of the predator is linear when the predator size is above 36 millimeters, but becomes asymptotic when it is below that value. Subadult males as long as adult females eat significantly larger food than do the latter, but only in the larger lizards is this correlated with a relatively larger head. Anolis conspersus selects prey from a wide range of taxa and shows no obvious intraspecific specialization not connected to differences in microhabitat and prey size. The efficiency of this system for solitary species is pointed out.read more
Citations
More filters
Journal ArticleDOI
Mating systems and population structure in two closely related species of the wheat group II. Environmental factors and population structure 4
TL;DR: Correlations between environmental factors and means and variances of 36 quantitative characters were calculated for seven populations of a selling species, Triticum longissimum, and five populations of the closely related outcrossing species T. speltoides.
Journal ArticleDOI
Feeding Ecology and Its Relationship with Head Structures in Two Populations of the Lizard Sceloporus minor (Squamata: Phrynosomatidae) from Northern Mexico
María Concepción Puga y Colmenares,María Concepción Puga y Colmenares,Aurelio Ramírez-Bautista,Raciel Cruz-Elizalde,Raciel Cruz-Elizalde,Aaron García-Rosales,Uriel Hernández-Salinas +6 more
TL;DR: The diet of lizards is associated with environmental variables, food availability, and morphological traits, and sexual dimorphism in head structures and its re-concretisation is evaluated.
Journal ArticleDOI
Morphological variation and sexual dimorphism in Liolaemus wiegmannii (Duméril & Bibron, 1837) (Squamata: Liolaemidae) from Uruguay
TL;DR: Multiple multivariate analyses support the hypothesis that most of the external morphological variation in Liolaemus wiegmannii is probably due to sexual dimorphism, and natural and sexual selection acting on females and males are the most plausible mechanisms underlying theDimorphism observed in this species.
Trace: Tennessee Research and Creative Exchange
Abstract: Understanding color polymorphism and associated ecological and morphological divergence is important to improving out knowledge of diversity and speciation; anoles are a model clade for addressing these questions. Anolis conspersus (the Grand Cayman blue-throated anole) is endemic to a small island and has color variants (green, blue, and brown morphs) that are spatially arranged despite a lack of wider environmental gradients. I examined aspects of ecological and morphological variation among and within A. conspersus populations throughout Grand Cayman to evaluate potential divergence between color morphs. No substantial differences in habitat use or morphology were detected. The blue and green morphs were difficult to categorize, suggesting the A. conspersus color system is more complicated than previously believed.
References
More filters
Journal ArticleDOI
Ecological Distribution in Anoline Lizards of Puerto Rico
TL;DR: The eight species of the genus Anolis in Puerto Rico can be divided into four morphological similarities as discussed by the authors : perch height, perch diameter, high-shade preference and low-shading preference.
Journal ArticleDOI
Correlations between ecology and morphology in anoline lizards from Havana, Cuba, and southern Florida
Book
The Life of the Rainbow Lizard
Robert F. Inger,Vernon A. Harris +1 more
TL;DR: The life of the rainbow lizard , The life of a rainbow lizard, مرکز فناوری اطلاعات £1,000,000 ($2,000; £1,500,000)