The effects of treadmill exercise on components of the cardiovascular (heart rate, mean arterial blood pressure, central venous pressure, venous return) and respiratory (minute ventilation, tidal volume, breathing frequency, rate of oxygen consumption, rate of carbon dioxide production) systems and on intra-abdominal pressure were measured in the American alligator, Alligator mississippiensis, ...

One of the proposed ecological functions of sleep is to conserve energy. The majority of studies that support this theory have been done on endothermic animals whose body temperatures drop during sleep due to the reduced neurological control of thermoregulation. In the present study, we examined typical temperatures to which the Desert Iguana, Dipsosaurus dorsalis, is exposed to in the field an...

Recent studies based on different types of data (i.e., morphology, molecules) have found strongly conflicting phylogenies for the genera of iguanid lizards but have been unable to explain the basis for this incongruence. We reanalyze published data from morphology and from the mitochondrial ND4, cytochrome b, 12S, and 16S genes to explore the sources of incongruence and resolve these conflicts....

Esta es una revisión de las películas que surgieron como resultado la colaboración del director peruano Luis Llosa y el productor estadounidense Roger Corman, en los años ochenta noventa. Cintas bajo presupuesto explotaban títulos exitosos cine norteamericano, muchos casos signos acción, aventura o ciencia ficción postapocalíptica, llegaron a usar escenarios peruanos imágenes futuras desastre. ...

Ecological data, the primary source of information on patterns and rates of migration, can be integrated with genetic data to more accurately describe the realized connectivity between geographically isolated demes. In this paper we implement this approach and discuss its implications for managing populations of the endangered Andros Island Rock Iguana, Cyclura cychlura cychlura. This iguana is...

A survey of the Pearl Island archipelago discovered a Preceramic shell-bearing midden on island Pedro González located in Panama Bay eastern tropical Pacific Ocean. This occupation dates between ca. 6200 and 5600 cal yr BP, revealed mixed marine terrestrial economy including exploitation sea turtles, snakes, iguanas, dolphins, land mammals such as dwarf deer. Test excavations 2007–2010 provided...