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1 June 2007 Sexual Difference in Color Sense in a Lycaenid Butterfly, Narathura japonica
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Abstract

The spectral sensitivity of a lycaenid butterfly, Narathura japonica, was investigated by electroretinography using an integrating sphere that could illuminate the compound eye from almost all directions. Samples were collected from three locations. Butterflies from different locations showed a similar pattern; the first, second, and third peaks (or a shoulder) were located at about 380, 460, and 560 nm, respectively. Males clearly showed the highest sensitivity at the first peak point. In contrast, females showed a higher relative sensitivity than males at the second and third peak points in all samples, and showed broad spectral sensitivity. This male-specific UV-sensitivity is discussed in terms of ecological factors.

Michio Imafuku, Isamu Shimizu, Hiroo Imai, and Yoshinori Shichida "Sexual Difference in Color Sense in a Lycaenid Butterfly, Narathura japonica," Zoological Science 24(6), 611-613, (1 June 2007). https://doi.org/10.2108/zsj.24.611
Received: 28 September 2006; Accepted: 1 January 2007; Published: 1 June 2007
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