Organización para Estudios Tropicales, (OET), Costa Rica
Bibliografía Nacional en Biología Tropical, (BINABITROP)

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Signatura:Biblioteca OET: S1490. NBINA-7896.
Autor: Greene, Harry W; Santana, M.A.
Dirección: University of California, Museum of Vertebrate Zoology and Department of Integrative Biology, Berkeley, CA 94720, US.
Título: Field studies of hunting behavior by bushmasters. Estudios de campo del comportamiento de caza por parte de las cascabelas mudas.
P.imprenta: v. 23, p. 897. Año 1983.
Serie: American Zoologist.
Descriptores: ANIMALS; CHORDATES; VERTEBRATES; REPTILES; SERPENTES.
VIPERIDAE; LACHESIS MUTA; BUSHMASTER; HUNTING BEHAVIOUR.
COSTA RICA; CENTRAL AMERICA.
LA SELVA BIOLOGICAL STATION; AREA DE CONSERVACION CORDILLERA VOLCANICA CENTRAL.
Resumen: Lachesis muta (Viperidae) is rare, poorly known, and endemic to tropical rain forest. We observed 7 in Costa Rica; 3 were radiotagged and followed for 10-45+ days. A 90 cm female used 3 sites for 3, 6, and 25 days and moved a total of 50 m. Ca. 40% of the time over 35 days was spent alert; ca. 1% of alert time was spent moving. Days were spent under small plants, nights in an alert posture exposed on the forest floor. The 24th night she ate a rodent weighing at least 40% of her mass, remained inactive for 9 days, then moved to a new site. Observations of other L. muta (lengths 1.6-2.2 m) were consistent with these and indicate that they are very sedentary. Hunting sites were associated with Welfia palms, the seeds of which are dispersed by rodents that bushmasters eat. These snakes are extraordinarily cryptic, and move very slowly and infrequently. The hunting strategy of L. muta seems to be, find a "good" place to ambush prey, feed infrequently on large items, and minimize detection by enemies
Compiled by: Organization for Tropical Studies


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