(DOWNLOAD) "Behavior and Timing of Life-History Events in a Semi-Captive Population of the Sonoran Pronghorn (Antilocapra Americana Sonoriensis) (Notes) (Report)" by Southwestern Naturalist * Book PDF Kindle ePub Free
eBook details
- Title: Behavior and Timing of Life-History Events in a Semi-Captive Population of the Sonoran Pronghorn (Antilocapra Americana Sonoriensis) (Notes) (Report)
- Author : Southwestern Naturalist
- Release Date : January 01, 2008
- Genre: Life Sciences,Books,Science & Nature,
- Pages : * pages
- Size : 90 KB
Description
ABSTRACT--The Sonoran pronghorn (Antilocapra americana sonoriensis) has been listed as endangered since 1967, yet little is known about its behavior due to difficulties observing them in the wild. During a study of Sonoran pronghorn in a semi-captive breeding facility in southern Arizona, we observed behaviors and timing of life-history events that have not been documented in peer-reviewed literature, including birth dates of fawns, pre-parturient and post-parturient behavior, timing of breeding season, behavior during the breeding season, date of horn casting by males, and response to predators. Behavior of the Sonoran pronghorn before and after parturition, during breeding, and toward predators was consistent with that reported for other subspecies. Timing of breeding, parturition, and horn casting all occurred earlier than reported for more northerly populations. Variation in timing of life-history activities was the main difference between the Sonoran pronghorn and other subspecies and would be expected due to the correspondence between seasonal rainfall and forage conditions in the Sonoran Desert and timing of parturition. RESUMEN--El berrendo sonorense (Antilocapra americana sonoriensis) ha estado en la lista de especies en peligro de extincion desde 1967, sin embargo, se sabe muy poco sobre su comportamiento debido a las dificultades para observarlo en su ambiente natural. Durante un estudio sobre el berrendo sonorense en una instalacio'n de crianza semi-cautiva en el sur de Arizona, observamos eventos sobre su comportamiento y de su historia de vida que no han sido documentados en la literatura cientifica: fechas de nacimiento de las crias, comportamiento pre-parto y post-parto, fenologia de la epoca de reproduccion, comportamiento durante la epoca de reproduccion, fecha de perdida de cuernos en el macho, y su comportamiento frente a depredadores. El comportamiento del berrendo sonorense antes y despues del parto, durante la reproduccion y hacia los depredadores fue similar al comportamiento reportado para otras subespecies. La fenologia de apareamiento, parto y perdida de cuernos empezo antes que lo reportado para poblaciones mas nortenas. La variacion en la fenologia de actividades de historia natural fue la diferencia principal entre el berrendo sonorense y otras subespecies y podria deberse a la correspondencia entre las lluvias estacionales y las condiciones de forraje en el desierto de Sonora y la epoca de parto.