VISUAL MATE DETECTION IN A TERRITORIAL MALE BUTTERFLY (ASTEROCAMPA LEILIA): EFFECTS OF DISTANCE AND PERCH LOCATION by RONALD L. RUTOWSKI 1) , LEE MCCOY and MICHAEL J. DEMLONG 2,3) (Department of Biology, Arizona State University, Tempe, AZ 85287-1501, USA) (Acc. 7-IX-2000) Summary We experimentally investigated proximate factors in uencing the visual detection of y- ing conspeci cs by male butter ies ( Asterocampa leilia ) engaged in a sit-and-wait mate- searching tactic. Model butter ies were presented to perched males in the eld using an ap- paratus that permitted us to control the path and speed of a model while varying minimum distance of the model from the male, height of the model above the ground, and model size. The dependent variable in all cases was whether or not the male left his perch and pursued the model. Males responded to normal-size models up to but not beyond distances of 3 m, and, because doubling the model surface area increased the distance at which males responded, we conclude that males do not detect conspeci cs if they are more than 3 m away. At distances of 2 m or less males perched on the ground were
Behaviour – Brill
Published: Jan 1, 2001
Keywords: BUTTERFLY; VISION; MATE DETECTION
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