DaveO Posted October 23, 2021 Share Posted October 23, 2021 This can be found in New Scientist 9 October 2021 page 20 Quote "Female red postman butterflies (Heliconius erato) see an extra colour in the ultraviolet spectrum that even the males of their species cannot" (Journal of Experimental Biology, doi.org/gx2p ) .... The females correctly chose the UV colour associated with the honey reward under every testing condition, even if the other UV light was 15 times brighter. Link to comment
Guest Posted October 23, 2021 Share Posted October 23, 2021 Interesting. Thanks for sharing. Link to comment
Guest Posted October 23, 2021 Share Posted October 23, 2021 In a related article it looks like they used what we call around here a sparticle board @Cadmium. https://journals.biologists.com/jeb/article/224/18/jeb243381/272298/Female-red-postman-butterflies-see-UV-shades-that There is a this reference colored patches called 3-hydroxykynurenine pigment. Is that Yellow seen in reflected UV or visible? Link to comment
colinbm Posted October 23, 2021 Share Posted October 23, 2021 No they are UV lights. Visible yellow, I think ? Link to comment
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