Assessing concurrent patterns of environmental niche and morphological evolution among species of horned lizards (Phrynosoma)
نویسندگان
چکیده
منابع مشابه
Horned lizards (Phrynosoma) incapacitate dangerous ant prey with mucus.
Horned lizards (Iguanidae, Phrynosomatinae, Phrynosoma) are morphologically specialized reptiles characterized by squat, tank-like bodies, short limbs, blunt snouts, spines and cranial horns, among other traits. They are unusual among lizards in the degree to which they specialize on a diet of ants, but exceptional in the number of pugnacious, highly venomous, stinging ants they consume, especi...
متن کاملReproductive Mode and Female Reproductive Cycles of Two Endemic Mexican Horned Lizards (Phrynosoma taurus and Phrynosoma braconnieri)
Two species of horned lizards, Phrynosoma braconnieri and P. taurus, are endemic to México and inhabit medium and high-elevation sites in the states of Oaxaca, Guerrero, and Puebla. We compiled information on distribution and reproductive cycle for these two species from the literature and from an examination of specimens in systematic collections. Our study confirms a viviparous mode of reprod...
متن کاملQuantifying ecological, morphological, and genetic variation to delimit species in the coast horned lizard species complex (Phrynosoma).
Lineage separation and divergence form a temporally extended process whereby populations may diverge genetically, morphologically, or ecologically, and these contingent properties of species provide the operational criteria necessary for species delimitation. We inferred the historical process of lineage formation in the coast horned lizard (Phrynosoma coronatum) species complex by evaluating a...
متن کاملPrey snapping and visual distance estimation in Texas horned lizards, Phrynosoma cornutum.
Captive Texas horned lizards were high-speed videotaped while feeding on ants in order to study the role of vision in facilitating tongue-protrusion capture of prey. Analysis of tongue movements revealed that prey snapping in these lizards is not a typical fixed-action pattern. By contrast, it is variable in performance and duration. Lizards adjusted head and tongue direction during the strike,...
متن کاملThe effect of parity on morphological evolution among phrynosomatid lizards.
The shift from egg laying to live-bearing is one of the most well-studied transitions in evolutionary biology. Few studies, however, have assessed the effect of this transition on morphological evolution. Here, we evaluated the effect of reproductive mode on the morphological evolution of 10 traits, among 108 species of phrynosomatid lizards. We assess whether the requirement for passing shelle...
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ژورنال
عنوان ژورنال: Journal of Evolutionary Biology
سال: 2009
ISSN: 1010-061X,1420-9101
DOI: 10.1111/j.1420-9101.2009.01779.x