Tropical Ecology and Conservation [Monteverde Institute]

Alternative Title

Preferencia en el comportamiento de dispersión del agutí Centro Americano (Dasyprocta punctata)

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Publication Date

May 2005

Abstract

Dasyprocta punctata is a scatter hoarding rodent commonly found in the lowland rainforests of Costa Rica. Its method of seed dispersal consists of carrying seeds from the ground below trees and storing each individual seed in small caches for consumption in times of food scarcity (Jansen et al. 2002). For this reason, D. punctata plays an important role in seedling recruitment and forest composition (Herrera and Pellmyr 2002). The purpose of this study was to determine the role preference played on the scatterhoarding behavior of D. punctata. Three species of seeds (Panopsis suaveolens, Persea americana, and Inga punctata) were offered at the Finca Ecológica in the Monteverde region of Costa Rica to observe the role of preference. A total of 420 seeds were presented to D. punctata at the site over a two-week period; data were collected on what behaviors were performed on the seeds. Results showed significant preference for different behavior treatments of seeds (Chi- squared = 7.11, p = 0.05), in addition to significant preference for caching seeds in different microhabitats (Chi – squared = 26.3, p = 0.05). Dasyprocta punctata es un roedor dispersor y acaparador que se encuentra comúnmente en los bosques lluviosos de la bajura de Costa Rica. Su método de dispersión de semillas consiste en trasladar las semillas del sitio y almacenarlas individualmente en reservas pequeñas para el consumo en tiempos de escasez de alimento (Jansen et al. 2002). D. punctata juega un papel importante en el reclutamiento de plántulas y en la composición del bosque (Herrera and Pellmyr 2002). El propósito de este estudio fue determinar el papel de la preferencia en la conducta de dispersión y acaparamiento de D. punctata. Un estudio se realizó en la Finca Ecológica en la región de Monteverde de Costa Rica para observar el papel de la preferencia entre tres especies de semillas: Panopsis suaveolens, Persea americana e Inga punctata. Un total de 420 semillas fue presentado a D. punctata in situ en un período de dos semanas; se hicieron observaciones sobre el comportamiento de D. punctata en la manipulación de las semillas. Los resultados mostraron preferencias significativas para diferentes tratamientos de semillas (Chi- squared = 7,11, p = 0.05), además de una preferencia significativa para guardar las semillas con respecto a los microhábitats diferentes (Chi- squared = 26.3, p = 0.05).

Keywords

Central American agouti, Pizote Centroamericano, Rodents--Behavior, Roedores--Comportamiento, Costa Rica--Puntarenas--Monteverde Zone--Cerro Plano, Costa Rica--Puntarenas--Zona de Monteverde--Cerro Plano, CIEE Spring 2005, CIEE Primavera 2005

Description

Student affiliation : Department of Natural Resources, University of New Hampshire Born Digital

Subject: topical

Central American agouti; Pizote Centroamericano; Rodents--Behavior; Roedores--Comportamiento; CIEE Spring 2005; CIEE Primavera 2005

Subject: geographic

Costa Rica--Puntarenas--Monteverde Zone--Cerro Plano; Costa Rica--Puntarenas--Zona de Monteverde--Cerro Plano

Genre

Reports

Holding Location

Monteverde Institute MVI

Identifier

M39-00230

Preference on the scatter-hoarding behavior of  the Central American Agouti (Dasyprocta punctata)

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