File:Hemidactylus frenatus mating, ventral view.jpg
Original file (3,353 × 5,030 pixels, file size: 5.99 MB, MIME type: image/jpeg)
Captions
Summary[edit]
DescriptionHemidactylus frenatus mating, ventral view.jpg |
English: Common House Geckos (Hemidactylus frenatus) mating. Ventral view with hemipenis inserted in the cloaca. This long-exposure photograph (2.5 s), taken in soft light (without flash) through a window with a macro lens and a tripod, reveals many details, like the sexual organs and the adhesive lamellae with setae under the feet (allowing traction of the reptile on smooth surfaces). All male squamates have a pair of intromittent organs called hemipenes, inside a sheath in the inner portion of the tail (sometimes producing a bulge), usually held inverted within the body, and everted for reproduction via erectile tissue. Only one of these hemipenis is used during the reproductive intercourse. Reciprocally, females own two hemiclitores. Single organ in the form of a canal, closed by the anal sphincter, the genital opening of female reptiles (the cloaca) allows either the exit of eggs, the evacuation of urine and feces, and reproduction. To adhere and cling to the surface of vertical smooth materials like glass, the geckos have lamellae under their feet, with a lot of setae, kind of bristle- or hair-like structures creating interactions with the support. The total of the micro-forces of each microscopic seta offers a very powerful adhesion. Non-captive, this couple through the glass is totally undomesticated. The geckos of this region of Laos (island of Don Det, Si Phan Don) usually appreciate houses, especially the illuminated transparent walls, where they can easily hunt insects attracted by light. Fearful by nature, they tend to flee the proximity of humans, and their visible mating thus occurs in an exceptional way. The sexual activity is relatively quick, and frequently the female dodges the male which, not very gallantly, bites the neck to immobilize her. In these wild conditions, the visual observation by physical rapprochement is perilous, the installation of a tripod timed, the adjustment of the manual focus delicate given the low light, and the camera settings complex because of the frequent jolts during the sexual act, which may lead to motion blurs. If fertilisation was successful, then the oviparous female will spawn its eggs about four weeks later.
Français : Accouplement de Geckos d'Asie (Hemidactylus frenatus). Vue ventrale avec hémipénis introduit dans la fente cloacale. Cette photographie en pose longue (2,5 s) et lumière douce (sans flash) à travers une fenêtre avec un objectif macro et un trépied, révèle de nombreux détails, notamment les organes sexuels et les setae regroupées en lamelles adhésives sous les pieds (pour permettre la traction du reptile sur des surfaces lisses). Tous les squamates (saurophidiens) mâles possèdent une paire d'hémipénis invaginés (retournés comme les doigts d'un gant) à l'intérieur d'une gaine dans la portion intérieure de la queue (produisant parfois un renflement). Ces organes copulateurs pairs et symétriques sont dévaginés au moment de l'accouplement. La dévagination est accomplie par afflux de sang dû à un tissu érectile analogue à celui du pénis des mammifères. Un seul de ces hémipénis sert lors de l'acte reproducteur. Réciproquement, les femelles squamates possèdent deux hémiclitoris. Organe unique en forme de canal, clos par le sphincter anal, l'orifice génital des reptiles femelles (le cloaque) permet à la fois la sortie des oeufs, l'évacuation des urines et des fèces, et la reproduction. Pour adhérer et se mouvoir sur la surface verticale de matériaux lisses comme le verre d'un carreau, les geckos possèdent des pieds lamellés constitués de setae, poils très denses (plusieurs milliers par mm²) qui se ramifient à leur extrémité en poils extrêmement fins (de l'ordre de 0,2 à 0,5 µm). Ces franges engendrent des interactions avec le support à l'échelle moléculaire, et le total de ces micro-forces offre une adhérence très grande. Non-captif, ce couple à travers la vitre est en totale liberté. Les geckos de cette région du Laos (île de Don Det, Si Phan Don) fréquentent habituellement les maisons, notamment les paroies transparentes éclairées, où ils peuvent aisément chasser les insectes attirés par la lumière. De nature farouche, ils ont tendance à fuir la proximité des humains, et leur accouplement visible se produit donc de manière exceptionnelle. L'activité sexuelle est relativement brève, et il est fréquent que la femelle esquive le mâle qui, non très galamment, lui mord la nuque pour l'immobiliser. Dans ces conditions sauvages, l'observation visuelle par rapprochement physique est périlleuse, l'installation d'un trépied chronométré, la mise au point du focus manuel délicate étant donné le faible éclairage, enfin celle des réglages photographiques complexe à cause des soubresauts fréquents durant l'acte sexuel, susceptibles aussitôt d'entraîner des flous cinétiques. Si la fécondation a abouti, la femelle ovipare pondra ses oeufs environ quatre semaines plus tard. |
Date | |
Source | Own work |
Author | Basile Morin |
Camera location | 13° 59′ 08.42″ N, 105° 54′ 56.83″ E | View this and other nearby images on: OpenStreetMap | 13.985673; 105.915785 |
---|
Assessment[edit]
|
This image was selected as picture of the day on Vietnamese Wikipedia for 4 November 2023.
|
This image has been assessed under the valued image criteria and is considered the most valued image on Commons within the scope: Gekkonidae mating, ventral view. You can see its nomination here. |
Licensing[edit]
- You are free:
- to share – to copy, distribute and transmit the work
- to remix – to adapt the work
- Under the following conditions:
- attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
This image was uploaded as part of Wiki Science Competition 2019. |
File history
Click on a date/time to view the file as it appeared at that time.
Date/Time | Thumbnail | Dimensions | User | Comment | |
---|---|---|---|---|---|
current | 12:02, 6 November 2019 | 3,353 × 5,030 (5.99 MB) | Basile Morin (talk | contribs) | User created page with UploadWizard |
You cannot overwrite this file.
File usage on Commons
The following 31 pages use this file:
- User:Basile Morin
- User:Basile Morin/Published images created by Basile Morin
- User talk:Basile Morin/Archive 6 (Aug-Dec 2019)
- Commons:Featured picture candidates/File:Hemidactylus frenatus mating, ventral view.jpg
- Commons:Featured picture candidates/Log/November 2019
- Commons:Featured pictures/Animals/Reptiles
- Commons:Featured pictures/chronological/2019-B
- Commons:Photo challenge/2019 - November - Long Exposures
- Commons:Photo challenge/2019 - November - Long Exposures/Voting
- Commons:Photo challenge/2019 - November - Long Exposures/Voting/Result
- Commons:Picture of the Year/2019/Candidates
- Commons:Picture of the Year/2019/R1/Gallery/2019-B
- Commons:Picture of the Year/2019/R1/Gallery/ALL
- Commons:Picture of the Year/2019/R1/Gallery/M11
- Commons:Picture of the Year/2019/R1/Gallery/Other animals
- Commons:Picture of the Year/2019/R1/v/Hemidactylus frenatus mating, ventral view.jpg
- Commons:Quality images/Subject/Animals/Reptiles
- Commons:Quality images candidates/Archives November 10 2019
- Commons:Valued image candidates/Hemidactylus frenatus mating, ventral view.jpg
- Commons:Wiki Science Competition 2019
- Commons:Wiki Science Competition 2019/Images
- Commons:Wiki Science Competition 2019/ar
- Commons:Wiki Science Competition 2019/be-tarask
- Commons:Wiki Science Competition 2019/de
- Commons:Wiki Science Competition 2019/en
- Commons:Wiki Science Competition 2019/es
- Commons:Wiki Science Competition 2019/fr
- Commons:Wiki Science Competition 2019/ms
- Commons:Wiki Science Competition 2019/pt
- Commons:Wiki Science Competition 2019/ru
- Commons:Wiki Science Competition 2019/uk
File usage on other wikis
The following other wikis use this file:
- Usage on ar.wikipedia.org
- Usage on bcl.wikipedia.org
- Usage on ca.wikipedia.org
- Usage on en.wikipedia.org
- Reptile
- Seta
- Hemipenis
- Common house gecko
- Talk:Common house gecko
- Wikipedia:Featured pictures/Animals/Reptiles
- User talk:Basile Morin
- User:Basile Morin
- Wikipedia:WikiProject Amphibians and Reptiles/Automated list of recognized content
- Wikipedia:WikiProject Amphibians and Reptiles/Recognized content
- Wikipedia:Featured pictures thumbs/66
- Wikipedia:Featured picture candidates/November-2019
- Wikipedia:Picture of the day/December 2021
- Wikipedia:Featured picture candidates/Gekkonidae mating
- Don Det
- User talk:Basile Morin/Archive 2019
- Template:POTD/2021-12-19
- Wikipedia:Main Page history/2021 December 19
- Wikipedia:Main Page history/2021 December 19b
- Usage on es.wikipedia.org
- Usage on fa.wikipedia.org
- Usage on fr.wikipedia.org
- Usage on hi.wikipedia.org
- Usage on ig.wikipedia.org
- Usage on it.wikipedia.org
- Usage on ja.wikipedia.org
- Usage on ko.wikipedia.org
- Usage on mg.wikipedia.org
- Usage on my.wikipedia.org
- Usage on tl.wikipedia.org
- Usage on uk.wikipedia.org
- Usage on vi.wikipedia.org
- Usage on zh.wikipedia.org
Metadata
This file contains additional information such as Exif metadata which may have been added by the digital camera, scanner, or software program used to create or digitize it. If the file has been modified from its original state, some details such as the timestamp may not fully reflect those of the original file. The timestamp is only as accurate as the clock in the camera, and it may be completely wrong.
Camera manufacturer | Canon |
---|---|
Camera model | Canon EOS 5D Mark IV |
Author | Basile Morin |
Copyright holder |
|
Exposure time | 5/2 sec (2.5) |
F-number | f/6.3 |
ISO speed rating | 400 |
Date and time of data generation | 19:05, 12 August 2019 |
Lens focal length | 100 mm |
Latitude | 13° 59′ 8.42″ N |
Longitude | 105° 54′ 56.83″ E |
Altitude | 75.6 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 | 21:20, 30 August 2019 |
Exposure Program | Manual |
Exif version | 2.3 |
Date and time of digitizing | 20:50, 30 August 2019 |
APEX shutter speed | −1.321928 |
APEX aperture | 5.310704 |
APEX exposure bias | 0 |
Maximum land aperture | 3 APEX (f/2.83) |
Metering mode | Pattern |
Flash | Flash did not fire, compulsory flash suppression |
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) | 12:01 |
Satellites used for measurement | 10 |
Receiver status | Measurement in progress |
Measurement mode | 3-dimensional measurement |
Measurement precision | Fair (1.7) |
Geodetic survey data used | WGS-84 |
GPS date | 12 August 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 | 04:20, 31 August 2019 |
Unique ID of original document | 39367BCCE3F59683353948059E9924A2 |
Copyright status | Copyrighted |
IIM version | 4 |
Structured data
13°59'8.423"N, 105°54'56.826"E
12 August 2019
2.5 second
6.3
100 millimetre
400
image/jpeg
- Gekkonidae sex
- Hemidactylus frenatus
- Reptilia in ventral aspect
- Hemipenis
- Cloaca
- Gekkonidae setae
- Gekkonidae feet
- Reptiles of Laos
- Animals at windows
- Views from windows
- Animals with black background
- Long exposure photographs of animals
- Don Det
- Wildlife and nature images from Wiki Science Competition 2019 France
- Penis
- Files with coordinates missing SDC location of creation
- Featured pictures on Wikimedia Commons
- Quality images
- Featured pictures on Wikipedia, English
- Featured pictures on Wikipedia, Vietnamese
- Valued images sorted by promotion date
- Valued images promoted 2019-11
- CC-BY-4.0
- Self-published work
- Images from Wiki Science Competition 2019 in France
- Wildlife and nature images from Wiki Science Competition 2019
- Photographs by Basile Morin
- Taken with Canon EOS 5D Mark IV and Canon EF 100mm F2.8L Macro IS USM
- Uploaded via Campaign:wsc-fr
- Quality images by Basile Morin/Animals
- Quality images by Basile Morin
- Quality images of Hemidactylus frenatus
- Quality images of Champasak Province
- Quality images of animals in Laos
- Quality images from Wiki Science Competition 2019
- Featured pictures by Basile Morin
- Featured pictures of Hemidactylus frenatus
- Featured pictures of Laos
- Valued images of Hemidactylus frenatus
- Featured night photography
- Published images created by Basile Morin
- Quality images with motion blur
- Pages with maps