Producción Científica Profesorado

Temporal-spatial segregation among hummingbirds foraging on honeydew in a temperate forest in Mexico



Ortiz Pulido, Raúl

2011

Lara, C., Martínez-García, V., Ortiz-Pulido, R., Bravo-Cadena, J., Loranca, S. y Cordobá-Aguilar, A. 2011. Temporal-spatial segregation among hummingbirds foraging on honeydew in a temperate forest in Mexico. Current Zoology 57: 56-62. Preprinted


Abstract


Spatial and temporal variation in interactions between hummingbirds and plants have often been examined, and hummingbirds and insects are known to indirectly interact in networks of nectar plants. In a highland temperate forest in Hidalgo, Mexico some oak trees were heavily infested by honeydew-producing insects (family Margarodidae, tribe Xylococcini, genus Strigmacoccus) and the honeydew was consumed by hummingbirds. Here using survival analysis we investigate how the honeydew produced by dense populations of these margarodids is temporally and spatially partitioned by hummingbirds. We also measured the availability and quality of honeydew exudates, and then we recorded the time until a bird visited and used such resources. Four hummingbird species consumed this resource (Atthis eloisa, Hylocharis leucotis, Colibri thalassinus and Eugenes fulgens). Data from 294 hours of observation on seven focal trees suggested temporal and spatial segregation among visiting birds according to body size and territorial behavior during the most honeydew-limited time. Hummingbird species differed in the daily times they foraged, as well as in the location where honeydew-producing insects were visited on the trees. Temporal and spatial segregation among hummingbird species is interpreted as an adaptation to reduce the risk of aggressive encounters. This may facilitate multispecies coexistence and allow these birds to exploit honeydew more effectively



Producto de Investigación




Artículos relacionados

The effect of spatio-temporal variation in understanding the fruit crop size hypothesis

Avifauna de la Reserva de la Biosfera Barranca de Metztitlán, Hidalgo, México

Temporal-spatial segregation among hummingbirds foraging on honeydew in a temperate forest in Mexico

Frugivoría por Aves en un Paisaje Fragmentado: Consecuencias en la Dispersión de Semillas

Patterns of resource tracking by avian frugivores at multiple spatial scales: two case studies on di...

The relationship between bark peeling rate and the distribution and mortality of two epiphyte specie...

EXPLORANDO LA RELACIÓN ENTRE REGISTROS DE COLIBRÍES Y ABUNDANCIA DE FLORES CON ESCALAMIENTO ESPACIO-...

Influence of slope orientation on sex ratio and size distribution in a dioecious plant Bursera fagar...

UN PANORAMA BREVE DE LA HISTORIA DE LA ORNITOLOGÍA MEXICANA

Abundance of frugivorous birds and richness of fruit resource: is there a temporal relationship?