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Instantaneous threat escape and differentiated refuge demand among zooplankton taxa

Hansson, Lars Anders LU ; Bianco, Giuseppe LU ; Ekvall, Mikael LU ; Heuschele, Jan LU ; Hylander, Samuel LU and Yang, Xiuhong LU (2016) In Ecology 97(2). p.279-285
Abstract

Most animals, including aquatic crustacean zooplankton, perform strong avoidance movements when exposed to a threat, such as ultraviolet radiation (UVR). We here show that the genera Daphnia and Bosmina instantly adjust their vertical position in the water in accordance with the present UVR threat, i.e., seek refuge in deeper waters, whereas other taxa show less response to the threat. Moreover, Daphnia repeatedly respond to UVR pulses, suggesting that they spend more energy on movement than more stationary taxa, for example, during days with fluctuating cloud cover, illustrating nonlethal effects in avoiding UVR threat. Accordingly, we also show that the taxa with the most contrasting behavioral responses differ considerably in... (More)

Most animals, including aquatic crustacean zooplankton, perform strong avoidance movements when exposed to a threat, such as ultraviolet radiation (UVR). We here show that the genera Daphnia and Bosmina instantly adjust their vertical position in the water in accordance with the present UVR threat, i.e., seek refuge in deeper waters, whereas other taxa show less response to the threat. Moreover, Daphnia repeatedly respond to UVR pulses, suggesting that they spend more energy on movement than more stationary taxa, for example, during days with fluctuating cloud cover, illustrating nonlethal effects in avoiding UVR threat. Accordingly, we also show that the taxa with the most contrasting behavioral responses differ considerably in photoprotection, suggesting different morphological and behavioral strategies in handling the UVR threat. In a broader context, our studies on individual and taxa specific responses to UVR provide insights into observed spatial and temporal distribution in natural ecosystems.

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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Daphnia, Migration, Movement, Polyphemus, Ultraviolet radiation, Zooplankton, refuge, threat response
in
Ecology
volume
97
issue
2
pages
7 pages
publisher
Ecological Society of America
external identifiers
  • Scopus:84960935021
  • WOS:000371439800001
ISSN
0012-9658
DOI
10.1890/15-1014.1
language
English
LU publication?
yes
id
3a827a4a-e347-4c4f-b97d-3fb4b3f937a4
date added to LUP
2016-07-15 07:57:02
date last changed
2017-02-10 10:07:20
@article{3a827a4a-e347-4c4f-b97d-3fb4b3f937a4,
  abstract     = {<p>Most animals, including aquatic crustacean zooplankton, perform strong avoidance movements when exposed to a threat, such as ultraviolet radiation (UVR). We here show that the genera Daphnia and Bosmina instantly adjust their vertical position in the water in accordance with the present UVR threat, i.e., seek refuge in deeper waters, whereas other taxa show less response to the threat. Moreover, Daphnia repeatedly respond to UVR pulses, suggesting that they spend more energy on movement than more stationary taxa, for example, during days with fluctuating cloud cover, illustrating nonlethal effects in avoiding UVR threat. Accordingly, we also show that the taxa with the most contrasting behavioral responses differ considerably in photoprotection, suggesting different morphological and behavioral strategies in handling the UVR threat. In a broader context, our studies on individual and taxa specific responses to UVR provide insights into observed spatial and temporal distribution in natural ecosystems.</p>},
  author       = {Hansson, Lars Anders and Bianco, Giuseppe and Ekvall, Mikael and Heuschele, Jan and Hylander, Samuel and Yang, Xiuhong},
  issn         = {0012-9658},
  keyword      = {Daphnia,Migration,Movement,Polyphemus,Ultraviolet radiation,Zooplankton, refuge, threat response},
  language     = {eng},
  month        = {02},
  number       = {2},
  pages        = {279--285},
  publisher    = {Ecological Society of America},
  series       = {Ecology},
  title        = {Instantaneous threat escape and differentiated refuge demand among zooplankton taxa},
  url          = {http://dx.doi.org/10.1890/15-1014.1},
  volume       = {97},
  year         = {2016},
}