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Aggregation effects on anhydrobiotic survival in the tardigrade Richtersius coronifer

Olofsson, Helen LU and Jönsson, Ingemar LU (2004) In Journal of Experimental Zoology 301A(2). p.195-199
Abstract
For anhydrobiotic metazoans the rate of desiccation is an important factor influencing the probability of survival in a dry anhydrobiotic state. Formation of animal aggregations, in which the exposed body surface area of individual animals is reduced, represents one way to reduce the rate of evaporation. Such aggregations have earlier been documented in e.g., nematodes. We experimentally evaluate the effect of aggregation size (number of animals in a group of desiccating animals) on anhydrobiotic survival in the eutardigrade Richtersius coronifer. The experiment shows that aggregation provides a clear improvement on anhydrobiotic survival. The most likely explanation for this is that aggregated animals were exposed to a lower rate of... (More)
For anhydrobiotic metazoans the rate of desiccation is an important factor influencing the probability of survival in a dry anhydrobiotic state. Formation of animal aggregations, in which the exposed body surface area of individual animals is reduced, represents one way to reduce the rate of evaporation. Such aggregations have earlier been documented in e.g., nematodes. We experimentally evaluate the effect of aggregation size (number of animals in a group of desiccating animals) on anhydrobiotic survival in the eutardigrade Richtersius coronifer. The experiment shows that aggregation provides a clear improvement on anhydrobiotic survival. The most likely explanation for this is that aggregated animals were exposed to a lower rate of desiccation. Although the empirical evidence of aggregation in tardigrades is scarce, our study suggests that aggregation could potentially be an important survival factor for tardigrades living in environments characterized by periods of rapid desiccation. (C) 2004 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
301A
issue
2
pages
195 - 199
publisher
John Wiley & Sons
external identifiers
  • pmid:14743519
  • wos:000188711000010
  • scopus:1042291359
ISSN
0022-104X
DOI
10.1002/jez.a.20018
language
English
LU publication?
yes
id
1e848647-3eeb-48f0-8671-88bbe1bbd3d5 (old id 135428)
date added to LUP
2007-07-03 12:07:13
date last changed
2017-01-01 07:15:39
@article{1e848647-3eeb-48f0-8671-88bbe1bbd3d5,
  abstract     = {For anhydrobiotic metazoans the rate of desiccation is an important factor influencing the probability of survival in a dry anhydrobiotic state. Formation of animal aggregations, in which the exposed body surface area of individual animals is reduced, represents one way to reduce the rate of evaporation. Such aggregations have earlier been documented in e.g., nematodes. We experimentally evaluate the effect of aggregation size (number of animals in a group of desiccating animals) on anhydrobiotic survival in the eutardigrade Richtersius coronifer. The experiment shows that aggregation provides a clear improvement on anhydrobiotic survival. The most likely explanation for this is that aggregated animals were exposed to a lower rate of desiccation. Although the empirical evidence of aggregation in tardigrades is scarce, our study suggests that aggregation could potentially be an important survival factor for tardigrades living in environments characterized by periods of rapid desiccation. (C) 2004 Wiley-Liss, Inc.},
  author       = {Olofsson, Helen and Jönsson, Ingemar},
  issn         = {0022-104X},
  language     = {eng},
  number       = {2},
  pages        = {195--199},
  publisher    = {John Wiley & Sons},
  series       = {Journal of Experimental Zoology},
  title        = {Aggregation effects on anhydrobiotic survival in the tardigrade Richtersius coronifer},
  url          = {http://dx.doi.org/10.1002/jez.a.20018},
  volume       = {301A},
  year         = {2004},
}