Effect of ultra-high pressure on small animals, tardigrades and Artemia - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Cogent Physics Année : 2016

Effect of ultra-high pressure on small animals, tardigrades and Artemia

Fumihisa Ono
  • Fonction : Auteur
Yoshihisa Mori
  • Fonction : Auteur
Kenichi Takarabe
  • Fonction : Auteur
Akiko Fujii
  • Fonction : Auteur
Masayuki Saigusa
  • Fonction : Auteur
Yasushi Matsushima
  • Fonction : Auteur
Daisuke Yamazaki
  • Fonction : Auteur
Eiji Ito
  • Fonction : Auteur
Naurang Saini
  • Fonction : Auteur

Résumé

This research shows that small animals, tardigrades (Milnesium tardigradum) in tun (dehydrated) state and Artemia salina cists (dried eggs) can tolerate the very high hydrostatic pressure of 7.5 GPa. It was really surprising that living organisms can survive after exposure to such a high pressure. We extended these studies to the extremely high pressure of 20 GPa by using a Kawai-type octahedral anvil press. After exposure to this pressure for 30 min, the tardigrades were soaked in pure water and investigated under a microscope. Their bodies regained metabolic state and no serious injury could be seen. But they were not alive. A few of Artemia eggs went part of the way to hatching after soaked in sea water, but they never grew any further. Comparing with the case of blue-green alga, these animals are weaker under ultra-high pressure.
Fichier principal
Vignette du fichier
Effect of ultra high pressure on small animals tardigrades and Artemia.pdf (1.28 Mo) Télécharger le fichier
Origine Fichiers éditeurs autorisés sur une archive ouverte

Dates et versions

hal-03587413 , version 1 (24-02-2022)

Licence

Identifiants

Citer

Fumihisa Ono, Yoshihisa Mori, Kenichi Takarabe, Akiko Fujii, Masayuki Saigusa, et al.. Effect of ultra-high pressure on small animals, tardigrades and Artemia. Cogent Physics, 2016, 3 (1), ⟨10.1080/23311940.2016.1167575⟩. ⟨hal-03587413⟩
12 Consultations
35 Téléchargements

Altmetric

Partager

Gmail Mastodon Facebook X LinkedIn More