The Colour Changes in Lizards, Particularly in Phrynosoma
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Temperature-Independent Morning Emergence in Lizards of the Genus Phrynosoma.
An investigation of the relationship of morning emergence and body temperature in Phrynosoma demonstrated a rhythmic anticipation of conditions favorable for normal activity. Such a rhythm offers a mechanism by which ectothermic reptiles can use safe nocturnal shelters without loss of activity time in the morning.
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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...
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The genus Phrynosoma includes 13 species of North American lizards characterized by unique and highly derived morphologies and ecologies. Understanding interspecific relationships within this genus is essential for testing hypotheses about character evolution in this group. We analyzed mitochondrial ND4 and cytochrome b gene sequence data from all species of Phrynosoma in conjunction with a pre...
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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...
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Parker, G. H., "Color Changes of the Catfish Ameiurus in Relation to Neurohumors," Jour. Exp. Zool., 69, 199-223 (1934b). Parker, G. H., "Do Melanophore Nerves Show Antidromic Responses?" Jour. Gen. Physiol., 20, 851-858 (1937). Parker, G. H., "The Colour Changes in Lizards, Particularly in Phrynosoma," Jour. Exp. Biol., 15, 48-73 (1938). Parker, G. H., "On the Neurohumors of the Color Changes ...
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تاریخ انتشار 2005