Journal
JOURNAL OF EXPERIMENTAL BIOLOGY
Volume 219, Issue 24, Pages 3857-3860Publisher
COMPANY OF BIOLOGISTS LTD
DOI: 10.1242/jeb.148064
Keywords
Behaviour; Colour vision; Nocturnal moth
Categories
Funding
- National Agriculture and Food Research Organization (NARO)
- Japan Society for the Promotion of Science (JSPS) [26251036]
- Grants-in-Aid for Scientific Research [26251036] Funding Source: KAKEN
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We investigated colour discrimination and learning in adult males of the nocturnal cotton bollworm moth, Helicoverpa armigera, under a dim light condition. The naive moths preferred blue and discriminated the innately preferred blue from several shades of grey, indicating that the moths have colour vision. After being trained for 2 days to take nectar at a yellow disc, an innately non-preferred colour, moths learned to select yellow over blue. The choice distribution between yellow and blue changed significantly from that of naive moths. However, the dual-choice distribution of the trained moths was not significantly biased to yellow: the preference for blue is robust. We also tried to train moths to grey, which was not successful. The limited ability to learn colours suggests that H. armigera may not strongly rely on colours when searching for flowers in the field, although they have the basic property of colour vision.
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