Tropical Ecology and Conservation [Monteverde Institute]

Creator

Rhett Miller

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Publication Date

September 2002

Abstract

The purpose of this study is to find out the degree of feeding specialization of three nectarivorous bats - Anouri geoffroyi, Glossophaga commissarisi, and Hylonycteris underwoodi - that occur in the Cloud Forest of Monteverde, Costa Rica. The bats were mist netted for a total of nine nights distributed evenly throughout a month, and pollen loads were taken from the chest, head, and back of each bat and placed onto individual slides for the different body parts where the pollen was extracted. The slides were examined to ascertain the types of pollen carried by the bats and some were referenced with a small pollen library and Pollen and Spores of Barro Colorado Island (Roubik and Moreno 1991). A total of 20 morphospecies was found. A two-way ANOVA found a significant difference between the sexes of the bats for pollen species richness (F = 4.247, P = 0.0437, DF = l). Male bats were found to be typically specialists in relation with their feeding habits while females were found to be generalists. Also, a general trend found was that the smaller bat species were found to have a higher abundance of pollen species. La intención de este estudio es descubrir como especializado los hábitos son de los Murcielagos que chupan néctar - Anouri geoffroyi, Glossophaga commissarisi, and Hylonycteris underwoodi - que ocurren por la Galena de Colibri en Monteverde, Costa Rica. Los murciélagos fueron atrapados por un total de nueve noches distribuido igualmente por un mes y ejemplos de polen fueron sacados de los pechos, las cabezas, y las espaldas de cada murciélago. Entonces los ejemplos of polen fueron puestos en portaobjetos de vidrio para observarlos en un microscopio compuesto para contar las especies de polen. Unos de los ejemplos fueron hechos alusiones con una biblioteca pequeña y con el texto Pollen and Spores of Barro Colorado Island (Roubik and Moreno 1991). Un total de 20 morphospecies fue encontrado de los cuerpos de los murciélagos. Un ANOVA de dos vías se llevo a cabo para comparar el promedio de la riqueza de especies de polen por sexo de murciélago. Hubo una diferencia significativa (F = 4.247, P = 0.0437, DF = l). De otros gráficos, murciélagos machos fueron encontrados ser especialistas en relación con sus hábitos de comer mientras las hembras fueron encontrados ser generalistas. También un curso general fue descubierto que los especies más pequeñas tienen cantidades mas abundantes de polen riqueza.

Description

Student affiliation: Department of Biology, Wabash College Digitized by MVI

Genre

Reports

Holding Location

Monteverde Institute MVI

Identifier

M39-00103

Pollen loads of cloud forest nectarivorous bats

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