The jumping spider Saitis barbipes lacks a red photoreceptor to see its own sexually dimorphic red coloration

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Glenszczyk, MateuszUniversity of Silesia,University of Hamburg (författare)

The jumping spider Saitis barbipes lacks a red photoreceptor to see its own sexually dimorphic red coloration

Artikel/kapitelEngelska2022

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2021-12-11
Springer Science and Business Media LLC,2022

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LIBRIS-ID:oai:lup.lub.lu.se:60e18105-3eae-4ad0-9f86-42eb3bae34e7
https://lup.lub.lu.se/record/60e18105-3eae-4ad0-9f86-42eb3bae34e7URI
https://doi.org/10.1007/s00114-021-01774-6DOI

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Språk:engelska
Sammanfattning på:engelska

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Ämneskategori:ref swepub-contenttype

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Examining the role of color in mate choice without testing what colors the study animal is capable of seeing can lead to ill-posed hypotheses and erroneous conclusions. Here, we test the seemingly reasonable assumption that the sexually dimorphic red coloration of the male jumping spider Saitis barbipes is distinguishable, by females, from adjacent black color patches. Using microspectrophotometry, we find clear evidence for photoreceptor classes with maximal sensitivity in the UV (359 nm) and green (526 nm), inconclusive evidence for a photoreceptor maximally sensitive in the blue (451 nm), and no evidence for a red photoreceptor. No colored filters within the lens or retina could be found to shift green sensitivity to red. To quantify and visualize whether females may nevertheless be capable of discriminating red from black color patches, we take multispectral images of males and calculate photoreceptor excitations and color contrasts between color patches. Red patches would be, at best, barely discriminable from black, and not discriminable from a low-luminance green. Some color patches that appear achromatic to human eyes, such as beige and white, strongly absorb UV wavelengths and would appear as brighter “spider-greens” to S. barbipes than the red color patches. Unexpectedly, we discover an iridescent UV patch that contrasts strongly with the UV-absorbing surfaces dominating the rest of the spider. We propose that red and black coloration may serve identical purposes in sexual signaling, functioning to generate strong achromatic contrast with the visual background. The potential functional significance of red coloration outside of sexual signaling is discussed.

Ämnesord och genrebeteckningar

NATURVETENSKAP Biologi Zoologi hsv//swe
NATURAL SCIENCES Biological Sciences Zoology hsv//eng
NATURVETENSKAP Biologi Etologi hsv//swe
NATURAL SCIENCES Biological Sciences Behavioural Sciences Biology hsv//eng
Color vision
Computational filters
Salticidae
Sexual selection
Visual signaling

Biuppslag (personer, institutioner, konferenser, titlar ...)

Outomuro, DavidUniversity of Cincinnati (författare)
Gregorič, MatjažResearch Centre of the Slovenian Academy of Sciences and Arts (författare)
Kralj-Fišer, SimonaResearch Centre of the Slovenian Academy of Sciences and Arts (författare)
Schneider, Jutta M.University of Hamburg (författare)
Nilsson, Dan EricLund University,Lunds universitet,Syngruppen,Forskargrupper vid Lunds universitet,Lund Vision Group,Lund University Research Groups(Swepub:lu)zool-dni (författare)
Morehouse, Nathan I.University of Cincinnati (författare)
Tedore, CynthiaUniversity of Hamburg (författare)
University of SilesiaUniversity of Hamburg (creator_code:org_t)

Sammanhörande titlar

Ingår i:Science of Nature: Springer Science and Business Media LLC109:10028-10421432-1904

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Av författaren/redakt...: Glenszczyk, Mate ...; Outomuro, David; Gregorič, Matjaž; Kralj-Fišer, Sim ...; Schneider, Jutta ...; Nilsson, Dan Eri ...; visa fler...; Morehouse, Natha ...; Tedore, Cynthia; visa färre...

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NATURVETENSKAP: NATURVETENSKAP; och Biologi; och Zoologi

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Av lärosätet: Lunds universitet

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