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Journal Article

ONTOGENETIC SHIFT IN HEIGHT OF SLEEPING PERCHES OF COPE'S VINE SNAKE, OXYBELIS BREVIROSTRIS

Chad E. Montgomery, Karen R. Lips and Julie M. Ray
The Southwestern Naturalist
Vol. 56, No. 3 (SEPTEMBER 2011), pp. 358-362
Stable URL: http://www.jstor.org/stable/23028138
Page Count: 5
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Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
ONTOGENETIC SHIFT IN HEIGHT OF SLEEPING PERCHES OF COPE'S VINE SNAKE, OXYBELIS BREVIROSTRIS
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Abstract

In Omar Torrijos National Park, Coclé Province, Panama, we visually located Cope's vine snakes Oxybelis brevirostris at night along trails and streams. Of 203 O. brevirostris located, we documented height of perch for 185 individuals during March 2005—March 2007. All sleeping snakes encountered were on vegetation rather than on the ground. There was no significant difference in height of perch between males (170.1 cm) and females (148.7 cm). There, however, was a significant positive relationship between snout—vent length and height of perch. Longer snakes perched on branches significantly more often than small snakes, which tended to perch on herbaceous leaves. En el Parque Nacional de Omar Torrijos, Provincia de Coclé, Panamá, localizamos Oxybelis brevirostris durante encuentros visuales en la noche por senderos y arroyos. Encontramos 203 O. brevirostris y documentamos la altura de perchas de 185 individuos entre marzo 2005 y marzo 2007. Todas las serpientes que encontramos mientras dormían estaban en la vegetación y no en la tierra. No hubo una diferencia significativa en altura de la percha entre machos (170.1 cm) y hembras (148.7 cm). Pero sí hubo una relación significativa positiva entre la longitud hocico-cloaca y la altura de la percha. Serpientes más largas se encaramaron en ramas significativamente más frecuentemente que las pequeñas serpientes, que solieron encaramarse en las hojas herbáceas.

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