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Experimentally induced anhydrobiosis in the tardigrade Richtersius coronifer: Phenotypic factors affecting survival

Jönsson, Ingemar LU and Rebecchi, L (2002) In Journal of Experimental Zoology 293(6). p.578-584
Abstract
The ability of some animal taxa (e.g., nematodes, rotifers, and tardigrades) to enter an ametabolic (cryptobiotic) state is well known. Nevertheless, the phenotypic factors affecting successful anhydrobiosis have rarely been investigated. We report a laboratory study on the effects of body size, reproductive condition, and energetic condition on anhydrobiotic survival in a population of the eutardigrade Richtersius coronifer. Body size and energetic condition interacted in affecting the probability of survival, while reproductive condition had no effect. Large tardigrades had a lower probability of survival than medium-sized tardigrades and showed a positive response in survival to energetic condition. This suggests that energy constrained... (More)
The ability of some animal taxa (e.g., nematodes, rotifers, and tardigrades) to enter an ametabolic (cryptobiotic) state is well known. Nevertheless, the phenotypic factors affecting successful anhydrobiosis have rarely been investigated. We report a laboratory study on the effects of body size, reproductive condition, and energetic condition on anhydrobiotic survival in a population of the eutardigrade Richtersius coronifer. Body size and energetic condition interacted in affecting the probability of survival, while reproductive condition had no effect. Large tardigrades had a lower probability of survival than medium-sized tardigrades and showed a positive response in survival to energetic condition. This suggests that energy constrained the possibility for large tardigrades to enter and to leave anhydrobiosis. As a possible alternative explanation for low survival in the largest specimens we discuss the expression of senescence. In line with the view that processes related to ahhydrobiosis are connected with energetic costs we documented a decrease in the size of storage cells over a period of anhydrobiosis, showing for the first time that energy is consumed in the process of anhydrobiosis in tardigrades. (C) 2002 Wiley-Liss, Inc. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Journal of Experimental Zoology
volume
293
issue
6
pages
578 - 584
publisher
John Wiley & Sons
external identifiers
  • pmid:12410606
  • wos:000178972100004
  • scopus:0036845671
ISSN
0022-104X
DOI
10.1002/jez.10186
language
English
LU publication?
yes
id
c74b0e9f-9769-4537-82cc-12425d1d8107 (old id 147507)
date added to LUP
2007-07-03 13:15:50
date last changed
2017-01-01 04:37:58
@article{c74b0e9f-9769-4537-82cc-12425d1d8107,
  abstract     = {The ability of some animal taxa (e.g., nematodes, rotifers, and tardigrades) to enter an ametabolic (cryptobiotic) state is well known. Nevertheless, the phenotypic factors affecting successful anhydrobiosis have rarely been investigated. We report a laboratory study on the effects of body size, reproductive condition, and energetic condition on anhydrobiotic survival in a population of the eutardigrade Richtersius coronifer. Body size and energetic condition interacted in affecting the probability of survival, while reproductive condition had no effect. Large tardigrades had a lower probability of survival than medium-sized tardigrades and showed a positive response in survival to energetic condition. This suggests that energy constrained the possibility for large tardigrades to enter and to leave anhydrobiosis. As a possible alternative explanation for low survival in the largest specimens we discuss the expression of senescence. In line with the view that processes related to ahhydrobiosis are connected with energetic costs we documented a decrease in the size of storage cells over a period of anhydrobiosis, showing for the first time that energy is consumed in the process of anhydrobiosis in tardigrades. (C) 2002 Wiley-Liss, Inc.},
  author       = {Jönsson, Ingemar and Rebecchi, L},
  issn         = {0022-104X},
  language     = {eng},
  number       = {6},
  pages        = {578--584},
  publisher    = {John Wiley & Sons},
  series       = {Journal of Experimental Zoology},
  title        = {Experimentally induced anhydrobiosis in the tardigrade Richtersius coronifer: Phenotypic factors affecting survival},
  url          = {http://dx.doi.org/10.1002/jez.10186},
  volume       = {293},
  year         = {2002},
}