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Tropical Ecology and Conservation [Monteverde Institute]
Alternative Title
Los efectos de Xanthosoma spp. (Araceae) en la temperatura, el olor, y las flores de frecuencia de apareamiento de Cyclocephala sexpunctata (Scarabaeidae)
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Publication Date
May 2009
Abstract
Many pollinators have evolved very specified obligate mutualisms with the plants that they pollinate. One example of this kind of mutualism, in which the reproduction of both organisms relies on their relationship, is Xanthosoma spp. and Cyclocephala sexpunctata in Monteverde, Costa Rica. Xanthosoma spp. thermoregulate, attracting beetles because of a combination of heat, scent, and visual components of the inflorescence. The beetles crawl inside of the spathe and spadix inflorescence, where they both eat and mate. The specific stimuli that prompt the beetles to mate once inside the flower had not yet been widely examined. Through my experiments, I found that heat was the only factor that had a significant positive affect on mating frequency, as well as on the level of activity exhibited by beetles. The presence of flowers and the presence of scent did not have significant affects on mating frequency or activity. In addition, I was able to estimate that in a patch of 214 mature Xanthosoma spp., the population of males was about 200.6 individuals. About half as many females were captured, but an accurate estimate of female population could not be calculated because they were either not always present in inflorescences or they traveled farther to different patches more often than did males. These results add to a relatively small body of knowledge concerning this fascinating relationship between Araceae plants and their Scarabaeidae pollinators, and are important to understanding complex reproductive mutualisms. Varios polinizadores han evolucionado mutualismos obligados de forma muy específica con las plantas que ellos polinizan. Un ejemplo de esta clase de mutualismo, en el cual la reproducción de ambos organismos depende de esta relación es entre Xanthosoma spp. y Cyclocephala sexpunctata en Monteverde, Costa Rica. Xanthosoma spp. termo regula, atrayendo a los escarabajos debido a una combinación de calor, olor, y los componentes visuales de la inflorescencia.
Keywords
Araceae--Pollen, Araceae--Polen, Scarabaeidae, Costa Rica--Puntarenas--Monteverde Zone, Costa Rica--Puntarenas--Zona de Monteverde, CIEE Spring 2009, CIEE Primavera 2009
Description
Student affiliation : Department of Biochemistry, Occidental College Born Digital
Subject: topical
Araceae--Pollen; Araceae--Polen; Scarabaeidae; CIEE Spring 2009; CIEE Primavera 2009
Subject: geographic
Costa Rica--Puntarenas--Monteverde Zone; Costa Rica--Puntarenas--Zona de Monteverde
Genre
Reports
Holding Location
Monteverde Institute MVI
Identifier
M39-00520
Recommended Citation
Ghose, Sonia Lorraine, "The effects of Xanthosoma spp. (Araceae) temperature, scent, and flowers on the mating frequency of Cyclocephala sexpunctata (Scarabaeidae)" (2009). Tropical Ecology and Conservation [Monteverde Institute]. 285.
https://digitalcommons.usf.edu/tropical_ecology/285
