File:Crevettes rencontrées sur le site hydrothermal Rainbow (Ifremer 00569-68076 - 32798).jpg
Original file (2,048 × 1,536 pixels, file size: 1.34 MB, MIME type: image/jpeg)
Captions
Captions
Summary
[edit]| Description |
Français : Cette photographie a été prise par l'engin sous-marin Victor 6000 au cours d'une plongée sur le site hydrothermal Rainbow (entre 2200 et 2300 m de profondeur).
On y observe un essaim de crevettes abyssales Rimicaris exoculata et Mirocaris fortunata. Observée pour la première fois sur le site TAG à 3600 m de profondeur en 1986, la crevette Rimicaris exoculata colonise la plupart des sites de la dorsale médio‐Atlantique entre 1700 et 4000 m de profondeur. Ces crevettes forment des "essaims" sur la paroi des cheminées hydrothermales, avec des densités pouvant atteindre 3000 crevettes par m2. La taille moyenne des spécimens de Rimicaris exoculata à l’âge adulte est de 5,5 cm. Les juvéniles sont facilement discernables des adultes par leur couleur orange. Cette couleur est due à la présence d’une réserve de lipides pigmentés qui est absente chez l’adulte. La crevette Mirocaris fortunata n'est connue que des sites hydrothermaux de la dorsale médio-atlantique, bien qu'il existe une autre espèce appartenant au même genre (Mirocaris indica) sur un site hydrothermal de l'océan Indien. De taille plus réduite que Rimicaris exoculata (environ 3 cm de longueur totale), on la trouve en groupes le long des dépressions formées par les cheminées actives. English: This photograph was taken by the Victor 6000 underwater vehicle during a dive on the Rainbow hydrothermal site (between 2200 and 2300 m deep). There we observed a swarm of deep-sea shrimp Rimicaris exoculata and Mirocaris fortunata . First observed at the TAG site at 3600 m depth in 1986, the shrimp Rimicaris exoculata colonizes most sites of the Mid-Atlantic Ridge between 1700 and 4000 m depth. These shrimp form "swarms" on the walls of hydrothermal chimneys, with densities of up to 3000 shrimp per m 2 . The average size of Rimicaris exoculata specimens at adulthood is 5.5 cm. Juveniles are easily distinguished from adults by their orange color. This color is due to the presence of a reserve of pigmented lipids that is absent in adults. The shrimp Mirocaris fortunata is known only from hydrothermal sites of the Mid-Atlantic Ridge, although there is another species belonging to the same genus ( Mirocaris indica ) from a hydrothermal site in the Indian Ocean. Smaller in size than Rimicaris exoculata (about 3 cm in total length), it is found in groups along the depressions formed by active chimneys. |
|||||||||
| Date | 6 August 2005 (upload date) | |||||||||
| Source | Crevettes rencontrées sur le site hydrothermal Rainbow | |||||||||
| Author | null | |||||||||
| Other versions |
|
|||||||||
| Bounding box |
|
|||||||||
| Keywords | Endemic species; Crustacean; Deep hydrothermal sites; Abyssal species; Abysses | |||||||||
.jpg)
.jpg)
.jpg)
.jpg&action=edit§ion=1){kind=link}
Licensing
[edit].jpg&action=edit§ion=2){kind=link}
- 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.
File history
Click on a date/time to view the file as it appeared at that time.
| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 02:44, 11 November 2024 | | 2,048 × 1,536 (1.34 MB) | OptimusPrimeBot (talk | contribs) | #Spacemedia - Upload of https://image.ifremer.fr/data/00569/68076/hd/32798.jpg via Commons:Spacemedia |
You cannot overwrite this file.
File usage on Commons
The following 3 pages use this file:
.jpg&oldid=956661516){kind=link}