Scorpion fluorescence and reaction to light

Gaffin, Douglas D.; Bumm, Lloyd A.; Taylor, Matthew S.; Popokina, Nataliya V.; Mann, Shivani N.

doi:10.1016/j.anbehav.2011.11.014

Cited by 61 publications

(51 citation statements)

References 18 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Possible adaptive functions of fluorescence include prey attraction, aposematism, camouflage, sexual signaling or species recognition, photo-protection, and shelter finding (Heiling et al 2005, Andrews et al 2007, Lim et al 2007, Li et al 2008, Gaffin et al 2012, Guillermo-Ferreira et al 2014, Marez and Moore 2015, Brandt and Masta 2017). Firefly males are likely to have ultraviolet vision (Martin et al 2015, Sander and Hall 2015).…”

Section: Discussionmentioning

confidence: 99%

Oculogryphus chenghoiyanae sp. n. (Coleoptera, Lampyridae): a new ototretine firefly from Hong Kong with descriptions of its bioluminescent behavior and ultraviolet-induced fluorescence in females

Yiu¹,

Jeng²

2018

View full text Add to dashboard Cite

The first Oculogryphus species with associated males and female was found in Hong Kong and is described as new: O. chenghoiyanae sp. n. Adults of both sexes were collected live in the field and their bioluminescent behavior is reported for the first time in the genus. The captive males emit weak and continuous light from a pair of light spots on abdominal ventrite 6 or do so when disturbed. The larviform (highly paedomorphic) females can glow brightly from a pair of light-emitting organs on the abdomen. The females of Oculogryphus and Stenocladius are to date the only documented representatives of paedomorphism in ototretine fireflies. The finding is consistent with the evidence from male morphology and bioluminescent behavior, supporting the close relationship between the two genera. A key to the Oculogryphus species is provided. The Oculogryphus females can fluoresce with a blue-green light through the whole body under ultraviolet illumination, a phenomenon reported in the Lampyridae for the first time. The co-occurrence of bioluminescence and fluorescence is rare in terrestrial ecosystems, previously known only in some millipedes (Diplopoda). The fluorescence and bioluminescence abilities of Oculogryphus females are functionally independent: abdominal light-emitting organs producing bright yellowish green light while the body wall fluoresces with blue-green light. In contrast, fluorescence and bioluminescence in millipedes are biochemically linked, like in some jellyfish (Cnidaria: Medusozoa).

show abstract

Section: Discussionmentioning

confidence: 99%

Oculogryphus chenghoiyanae sp. n. (Coleoptera, Lampyridae): a new ototretine firefly from Hong Kong with descriptions of its bioluminescent behavior and ultraviolet-induced fluorescence in females

Yiu¹,

Jeng²

2018

View full text Add to dashboard Cite

show abstract

“…Some biological protein systems change their bioluminescence color accordingly to external radiation. [ 3,24,25 ] The hard shell of scorpions (e.g., Centruroides vittatus ) glows blue [ 26,27 ] and the soft skin of caterpillar (e.g., order Lepidoptera ) also show luminance between green and blue under UV light [ 28,29 ] ( Figure a). These luminous color changes result from their phosphor pigments that can absorb energy from UV and emit visible radiation.…”

Section: Figurementioning

confidence: 99%

Electro‐Photoluminescence Color Change for Deformable Visual Encryption

et al. 2020

View full text Add to dashboard Cite

In order to utilize the concept of the radiation-responsive luminous color change and develop further for practical uses, electroluminous system can be a good platform because the light intensity can be controlled. Surprisingly, the radiation-responsive electroluminous color change has not been investigated so far. The reason is, in general, the variation range of the wavelength emitted by the external radiation is narrow. [30][31][32][33] For the electroluminous color change triggered by radiation, the luminophore used in the electroluminescence (EL) must have strong photoluminescence (PL) and the PL wavelength must have a large difference from the EL wavelength. In addition, the PL and EL are desirable to be controlled independently so that the resulting color change is predictably tunable. In this study, we present, for the first time, a UV-responsive electroluminous color changing system, called electrophotoluminescence (EPL) color change. As a model system, we used the stretchable alternating current electroluminescence (ACEL) in which the electro-luminophores are photoluminescent as well. We investigated systematically the effects of the ACEL frequency and voltage to obtain a wide range of color variation. We utilized the EPL color changing system to demon strate a deformable visual encryption on the skin of a soft robotic rover.Even though this study focuses on controlling the EPL colors and understanding the physical origins, the device fabrication required material advances in several aspects. The device structure is illustrated in Figure 1b (top) and the cross-sectional scanning electron microscopy (SEM) image is presented in Figure 1c. A light-emitting layer (150 µm in thickness) was sandwiched between two stretchable electrodes. A hydrogel ionic conductor or indium-tin oxide (ITO) was used as the top electrode to ensure high transparency in the UV-vis range ( Figure S1, Supporting Information). In order to ensure adhesion of the hydrogel ionic conductor and the light-emitting layer under deformation, surface of the light-emitting layer was treated with benzophenone. The benzophenone treatment increased the turbidity and modulus of the polymer matrix (Ecoflex 00-30) in the light-emitting layer. Therefore, the benzophenone treatment for 10 min was chosen as an optimum condition for achieving enough adhesion without large increase of turbidity and modulus. The dependence of the modulus and transmittance on the benzophenone treatment time is shown in the Figure S2, Supporting Information.Although structural coloring and photoluminescence (PL) have been investigated for radiation-responsive color change, electroluminescence (EL) has not been used for the radiation-responsive system. An electrophotoluminescence (EPL) color change is presented here. The phosphors in the alternating current electroluminescence (ACEL) act simultaneously as electro-luminophores and photo-luminophores. The EPL chromaticity is systematically investigated depending on the ACEL frequency and UV intensity. It is found that the PL va...

show abstract

“…A close examination of the biology, ecology and behaviour of the animal or plant containing the fluorescent object is essential before claiming fluorescence is an adaptation [14]. Desert scorpions exhibit astonishing blue/green fluorescence under UV illumination but generally hide from the hot UV-containing sun during the day, so their fluorescence is generally thought as ecologically functionless [15].…”

Section: A Checklist For Ecologically Significant Fluorescence (A) Ismentioning

confidence: 99%

Fluorescence as a means of colour signal enhancement

Marshall

Johnsen

2017

Phil. Trans. R. Soc. B

View full text Add to dashboard Cite

Fluorescence is a physico-chemical energy exchange where shorter-wavelength photons are absorbed by a molecule and are re-emitted as longer-wavelength photons. It has been suggested a means of communication in several taxa including flowers, pitcher plants, corals, algae, worms, squid, spiders, stomatopods, fish, reptiles, parrots and humans. The surface or object that the pigment molecule is part of appears to glow due to its setting rather than an actual production of light, and this may enhance both signals and, in some cases, camouflage. This review examines some known uses of fluorescence, mainly in the context of visual communication in animals, the challenge being to distinguish when fluorescence is a functional feature of biological coloration or when it is a by-product of a pigment or other molecule. In general, we conclude that most observations of fluorescence lack enough evidence to suggest they are used in visually driven behaviours.This article is part of the themed issue 'Animal coloration: production, perception, function and application'.

show abstract

Scorpion fluorescence and reaction to light

Cited by 61 publications

References 18 publications

Oculogryphus chenghoiyanae sp. n. (Coleoptera, Lampyridae): a new ototretine firefly from Hong Kong with descriptions of its bioluminescent behavior and ultraviolet-induced fluorescence in females

Oculogryphus chenghoiyanae sp. n. (Coleoptera, Lampyridae): a new ototretine firefly from Hong Kong with descriptions of its bioluminescent behavior and ultraviolet-induced fluorescence in females

Electro‐Photoluminescence Color Change for Deformable Visual Encryption

Fluorescence as a means of colour signal enhancement

Contact Info

Product

Resources

About