File:Close-up_view_of_a_bioluminescent_beetle_Elateroidea.jpg
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Summary
DescriptionClose-up view of a bioluminescent beetle Elateroidea.jpg |
English: Close-up view of a bioluminescent beetle Elateroidea (Lampyridae Ototretinae Stenocladius or Rhagophthalmidae), on a leaf. This specimen measures about 20 mm (0.79 in). The species produces and emits light, via a chemical reaction during which chemical energy is converted into light energy. The principal chemical reaction in bioluminescence involves some light-emitting molecule and an enzyme, generally called the luciferin and the luciferase, respectively. Oxidation of organic compounds induces photon emission. The intensity of this light can be perceived by the human eye in a radius of 2 m (6.6 ft).
This is a long-exposure photograph (1.3 s) made with a tripod and a macro lens, in the middle of the night (2 am). In conditions of ambient darkness, the adjustment of the manual focus is difficult, and the camera settings (ISO and depth of field) should be done according to the mobility of the living organism, which may lead to motion blurs. At any time, the insect can also decrease the intensity or even completely stop emitting its light (example here). A soft and diffuse auxiliary lamp has been brought to reveal the details of the animal. Bioluminescent beetle species are in regression in the world because of the phenomenon of light pollution, insecticides and climate change. This specimen comes from the island of Don Det, Si Phan Don, Laos, a wild area far from any major city. This image won the 1st prize of the Wiki Science Competition category Wildlife and nature from France.
Français : Vue rapprochée d'un coléoptère bioluminescent Elateroidea (Lampyridae Ototretinae Stenocladius ou Rhagophthalmidae), sur une feuille. Le specimen mesure environ 20 mm (0.79 in). Cette espèce produit et émet de la lumière via une réaction chimique au cours de laquelle l'énergie chimique est convertie en énergie lumineuse. Le composé chimique à l'origine de cette bioluminescence est la luciférine. Celle-ci émet de la lumière en s'oxydant grâce à l'intervention de la luciférase, une enzyme. L'oxydation de composés organiques induit une émission de photons. L'intensité de cette lumière peut être perçue par l'oeil humain dans un rayon de 2 m (6.6 ft).
Cette photographie a été réalisée en pose longue (1,3 s), appareil sur trépied avec un objectif macro, en pleine nuit (2 heures du matin). Dans les conditions d'obscurité ambiante, la mise au point précise du focus manuel est particulièrement scabreuse, tout comme celle des réglages photographiques (ISO et profondeur de champ), notamment à cause de la mobilité de l'organisme vivant susceptible d'entraîner des flous cinétiques. A tout moment, l'insecte peut aussi diminuer l'intensité ou même totalement cesser d'émettre sa lumière (exemple ici). Une lampe d'appoint douce et diffuse a été apportée à proximité pour révéler les détails de l'animal. Les espèces bioluminescentes de coléoptères sont en voie de régression dans le Monde à cause du phénomène de pollution lumineuse, des insecticides et du dérèglement climatique. Ce specimen habite l'île de Don Det, Si Phan Don, au Laos, dans une région sauvage éloignée des grandes villes. Cette image a remporté le premier prix de la Wiki Science Competition catégorie Wildlife and nature from France |
Date | Taken on 2 September 2019 01:54:22 |
Source | Own work |
Author | Basile Morin |
Other versions |
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Camera location | 13° 59′ 07.27″ N, 105° 54′ 58.04″ E | View this and other nearby images on: OpenStreetMap | 13.985353; 105.916123 |
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Licensing
I, the copyright holder of this work, hereby publish it under the following license:
This file is licensed under the Creative Commons Attribution 4.0 International license.
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This image was uploaded as part of Wiki Science Competition 2019. |
Items portrayed in this file
depicts
13°59'7.271"N, 105°54'58.043"E
2 September 2019
1.3 second
10
100 millimetre
1,000
image/jpeg
e85037ba570987d072efbc27705b6d4c03095db3
1,608,665 byte
2,080 pixel
3,120 pixel
File history
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 12:02, 6 November 2019 | 3,120 × 2,080 (1.53 MB) | Basile Morin | User created page with UploadWizard |
File usage
The following pages on the English Wikipedia use this file (pages on other projects are not listed):
- Don Det
- User:Ambrosia10/Archive 4
- User talk:Abalg
- User talk:Ambrosia10/Archive 4
- User talk:Awkwafaba
- User talk:Cwmhiraeth/Archive 21
- User talk:Cygnis insignis/Archive 5
- User talk:Deuterostome
- User talk:Dick Bos/archive2020
- User talk:Donald Albury/Archive 13
- User talk:Elmidae/Archive 10
- User talk:Enwebb/Archive 4
- User talk:Epipelagic/Archive 13
- User talk:Evolution and evolvability/Archive 2020
- User talk:Froggydame
- User talk:FunkMonk/Archive 24
- User talk:GreatSculptorIthas
- User talk:Guettarda/Archive22
- User talk:JarrahTree/Archive 61
- User talk:Jens Lallensack/Archive 1
- User talk:JoJan/Archive 25
- User talk:Jowaninpensans
- User talk:Kiwikiu
- User talk:LittleLazyLass
- User talk:Maias
- User talk:MarkZusab/archive6
- User talk:Micromesistius
- User talk:Pvmoutside/Archive 4
- User talk:Quetzal1964/Archive 2
- User talk:Sbbarker19
- User talk:SchreiberBike/Archive 6
- User talk:SilverTiger12
- User talk:Slate Weasel
- User talk:Starsandwhales/2020
- User talk:William Avery/Archive 12
- Wikipedia:WikiProject Tree of Life/Newsletter/011
Global file usage
The following other wikis use this file:
- Usage on fr.wikipedia.org
- Usage on fr.wiktionary.org
- Usage on hy.wikipedia.org
- Usage on li.wiktionary.org
- Usage on nl.wikipedia.org
- Usage on nl.wiktionary.org
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Metadata
This file contains additional information, probably added from the digital camera or scanner used to create or digitize it.
If the file has been modified from its original state, some details may not fully reflect the modified file.
Camera manufacturer | Canon |
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Camera model | Canon EOS 5D Mark IV |
Author | Basile Morin |
Copyright holder |
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Exposure time | 13/10 sec (1.3) |
F-number | f/10 |
ISO speed rating | 1,000 |
Date and time of data generation | 01:54, 2 September 2019 |
Lens focal length | 100 mm |
Latitude | 13° 59′ 7.27″ N |
Longitude | 105° 54′ 58.04″ E |
Altitude | 511 meters above sea level |
Horizontal resolution | 238 dpi |
Vertical resolution | 238 dpi |
Software used | Adobe Photoshop Lightroom 6.12 (Windows) |
File change date and time | 15:37, 3 September 2019 |
Exposure Program | Manual |
Exif version | 2.3 |
Date and time of digitizing | 01:54, 2 September 2019 |
Shutter speed | −0.378512 |
APEX aperture | 6.643856 |
Exposure bias | 0 |
Maximum land aperture | 3 APEX (f/2.83) |
Metering mode | Pattern |
Flash | Flash did not fire, compulsory flash suppression |
DateTimeOriginal subseconds | 67 |
DateTimeDigitized subseconds | 67 |
Color space | sRGB |
Focal plane X resolution | 1,866.6666564941 |
Focal plane Y resolution | 1,866.6666564941 |
Focal plane resolution unit | 3 |
Custom image processing | Normal process |
Exposure mode | Manual exposure |
White balance | Auto white balance |
Scene capture type | Standard |
GPS time (atomic clock) | 18:49:40.226 |
Satellites used for measurement | 7 |
Receiver status | Measurement in progress |
Measurement mode | 3-dimensional measurement |
Measurement precision | Fair (2) |
Geodetic survey data used | WGS-84 |
GPS date | 1 September 2019 |
GPS tag version | 0.0.3.2 |
Serial number of camera | 088053003158 |
Lens used | EF100mm f/2.8L Macro IS USM |
Date metadata was last modified | 22:37, 3 September 2019 |
Unique ID of original document | FAE6AB51104DAD34B56702AA93A5C434 |
Copyright status | Copyrighted |
IIM version | 4 |