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In order to understand the visual orientation mechanisms of the male black chafer Holotrichia loochooana loochooana to females, we examined male behavioral response to colored objects (lures) when female sex pheromone was present. In the field, males landed more frequently on darker lures than on lighter ones of the same color. Among lures of different colors but with the same brightness, males preferred...
In tropical forests, ants frequently consume fruit pulp around seeds of vertebrate-dispersed plants, which protects the seeds from infection by fungus and pathogens. Seed cleaning behavior by omnivorous ants was observed in the secondary forests of Bogor botanical garden in West Java. Fruit pulp around the seeds of the rambutan Nephelium lappaceum was completely removed by Pheidole plagiaria, Anoplolepis gracilipes...
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