File:Bioluminescent beetle Elateroidea (video).webm

Original file(WebM audio/video file, VP8/Vorbis, length 55 s, 1,920 × 1,080 pixels, 4.92 Mbps overall, file size: 32.28 MB)

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Video of a bioluminescent beetle Elateroidea

Summary

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Description
English: Video of a bioluminescent beetle Elateroidea (Lampyridae Ototretinae Stenocladius or Rhagophthalmidae), here moving on a banana 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). At any time, the insect can also decrease the intensity or even completely stop emitting its light (example here). 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, in a wild area far from any major city.
Français : Vidéo d'un coléoptère bioluminescent Elateroidea (Lampyridae Ototretinae Stenocladius ou Rhagophthalmidae), ici en mouvement sur une feuille de bananier. 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). 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.
Čeština: Bioluminiscentní larva brouka z čeledi světluškovití leze po bánánovém listu. Larva je dlouhá přibližně 20 mm.
Эрзянь: Биолюминесцентной шунжа Elateroidea (Lampyridae Ototretinae Stenocladius эли Rhagophthalmidae), тесэ моли бананонь лопава. Онкстави 20 millimetres (0.79 in).
Polski: Bioluminescencyjna larwa chrząszcza z nadrodziny sprężyków poruszająca się po liściu bananowca. Larwa ma około 20 mm długości.
Date
Source Own work
Author Basile Morin
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Assessment

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Media of the day This file was selected as the media of the day for 27 February 2020. It was captioned as follows:
English: Video of a bioluminescent beetle Elateroidea (Lampyridae Ototretinae Stenocladius or Rhagophthalmidae), here moving on a banana leaf. This specimen measures about 20 mm (0.79 in).
Other languages
Čeština: Bioluminiscentní larva brouka z čeledi světluškovití leze po bánánovém listu. Larva je dlouhá přibližně 20 mm.
English: Video of a bioluminescent beetle Elateroidea (Lampyridae Ototretinae Stenocladius or Rhagophthalmidae), here moving on a banana leaf. This specimen measures about 20 mm (0.79 in).
Français : Vidéo d'un coléoptère bioluminescent Elateroidea (Lampyridae Ototretinae Stenocladius ou Rhagophthalmidae), ici en mouvement sur une feuille de bananier. Le specimen mesure environ 20 mm (0.79 in).
Эрзянь: Биолюминесцентной шунжа Elateroidea (Lampyridae Ototretinae Stenocladius эли Rhagophthalmidae), тесэ моли бананонь лопава. Онкстави 20 mm (0.79 in).
Polski: Bioluminescencyjna larwa chrząszcza z nadrodziny sprężyków poruszająca się po liściu bananowca. Larwa ma około 20 mm długości.

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File history

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Date/TimeThumbnailDimensionsUserComment
current04:49, 28 August 201955 s, 1,920 × 1,080 (32.28 MB)Basile Morin (talk | contribs)Light corrected
04:25, 28 August 201955 s, 1,920 × 1,080 (32.46 MB)Basile Morin (talk | contribs)User created page with UploadWizard

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Format Bitrate Download Status Encode time
VP9 1080P 2.71 Mbps Completed 09:21, 14 June 2024 4 min 11 s
Streaming 1080p (VP9) 2.86 Mbps Completed 02:55, 25 January 2024 2 min 35 s
VP9 720P 1.46 Mbps Completed 09:20, 14 June 2024 3 min 5 s
Streaming 720p (VP9) 1.39 Mbps Completed 20:53, 5 February 2024 1 min 13 s
VP9 480P 731 kbps Completed 09:18, 14 June 2024 1 min 15 s
Streaming 480p (VP9) 665 kbps Completed 05:56, 12 January 2024 35 s
VP9 360P 331 kbps Completed 09:17, 14 June 2024 52 s
Streaming 360p (VP9) 279 kbps Completed 21:13, 16 January 2024 28 s
VP9 240P 182 kbps Completed 09:16, 14 June 2024 34 s
Streaming 240p (VP9) 120 kbps Completed 00:13, 16 December 2023 21 s
WebM 360P 509 kbps Completed 22:05, 29 November 2023 20 s
Streaming 144p (MJPEG) 644 kbps Completed 02:11, 1 November 2023 4.0 s
Stereo (Opus) 67 kbps Completed 03:36, 16 November 2023 1.0 s
Stereo (MP3) 128 kbps Completed 09:46, 30 October 2023 2.0 s

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