| evolving from static to dynamic signals: evolutionary compensation between two communicative signals. | signals that convey related information may impose selection on each other, creating evolutionary links between different components of the communicative repertoire. here, we ask about the consequences of the evolutionary loss of one signal (a colour patch) on another (a motion display) insceloporuslizards. we present data on male lizards of four species: two pairs of sister taxa representing two independent evolutionary losses of the static colour patch (sceloporus cozumelaeandsceloporus parvus ... | 2015 | 25892737 |
| linking physiological effects on activity and resource use to population level phenomena. | we present an approach to delineating physiological effects on population level processes by modeling the activity and resource budgets of animals. physiology and its environmental forcing functions are assumed to affect both the total time available for activity and foraging and the resource budgets by affecting resource acquisition, costs, and handling. we extend the earlier model of dunham and others (1989) and translate it into a computational algorithm. to satisfy conservation needs for acc ... | 2006 | 21672811 |
| repeatability of locomotor performance in natural populations of the lizard sceloporus merriami. | | 1987 | 28563412 |
| variation in home range size along an elevational gradient in the iguanid lizard sceloporus merriami. | variation in home range size among three populations of the saxicolous iguanid lizard sceloporus merriami was studied in relation to density, food availability, behavioral patterns, and daily activity periods. these populations, separated by a maximum distance of 50 km, occur along an elevational gradient which spans the elevational range of the species in west texas. the population with the smallest home ranges had the highest density, the lowest food availability, and the most restricted daily ... | 1987 | 28312997 |