Agrégateur de donnée spécialisé dans les articles à saveur technologique. Un large éventail de tutoriaux gratuits afin d’informer les webmasters débutants et expérimentés.
vendredi 1 janvier 2021
Scientists discover new species of gelatinous creature that lives on the bottom of the sea
Scientists from the National Oceanic and Atmospheric Administration (NOAA) have discovered and identified a new gelatinous species of ctenophor in the depths of the sea.
Such as reported by Science Alert, this discovery was the first of its kind because this new creature has was found using only high definition video footage captured on the ocean floor. The Duobrachium sparksae was found by the remotely operated vehicle (ROV) Deep Discoverer while diving off Puerto Rico. It was first seen in 2015, but the team wanted to make sure it was a new species.
The body of this creature is less than a millimeter in length, but these cameras allow a high level of detail that was not possible before.
"We don't have the same microscopes as we would in a lab, but video can give us enough information to understand the morphology in detail, such as the location of their reproductive organs and other aspects, " explains the marine biologist of the NOAA Allen Collins.
The D. Sparksae features a bulbous balloon-shaped body with two prominent tentacle arms, and three different individuals have been filmed at depths of approximately 2900 meters or 2.5 miles. " It was a beautiful and unique body, " says oceanographer Mike Ford. "It was moving like a hot air balloon attached to the seabed in two lines, maintaining a specific altitude above the seabed. If it is attached to the seabed, we are not sure. We did not observe any direct attachment during the dive, but it appears that the organism touches the seabed. "
Ctenophores are also known as jellies in comb, and were also called currants ofsea, sea nuts and Venus belts. Although they may resemble jellyfish, they are not too closely related, and Ctenophores tend to be carnivorous and "subsist on small arthropods and some types of larvae. On the ocean floor, they are "even worse than jellyfish " when it comes to bringing sea level for research purposes. Got a tip for us? a possible story? Please send an email to [email protected] . < br /> Adam Bankhurst is a news editor for hfrance. You can follow him on Twitter @ AdamBankhurst and on Twitch.
Aucun commentaire:
Enregistrer un commentaire