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Zooplankton vertical migration and plasticity of pigmentation arising from simultaneous UV and predation threats

Hylander, Samuel LU ; Larsson, Niklas LU and Hansson, Lars-Anders LU (2009) In Limnology and Oceanography 54(2). p.483-491
Abstract
We assessed how zooplankton (copepods) handle the simultaneous threats of predators and ultraviolet (UV)

radiation and whether they respond with changes in pigmentation, vertical migration, or both. We found weak

vertical migration among copepods in response to UV stress, and this response was not apparently influenced by

predation risk. Exposure to high levels of UV radiation caused copepods to retain pigments in the absence of a

predation threat. When exposed to predation threat, they reduced their pigmentation regardless of UV level.

Thus, they ranked predation as a threat more severe than UV radiation. Reducing the protective pigment level in

response to predation in a situation in... (More)
We assessed how zooplankton (copepods) handle the simultaneous threats of predators and ultraviolet (UV)

radiation and whether they respond with changes in pigmentation, vertical migration, or both. We found weak

vertical migration among copepods in response to UV stress, and this response was not apparently influenced by

predation risk. Exposure to high levels of UV radiation caused copepods to retain pigments in the absence of a

predation threat. When exposed to predation threat, they reduced their pigmentation regardless of UV level.

Thus, they ranked predation as a threat more severe than UV radiation. Reducing the protective pigment level in

response to predation in a situation in which UV radiation is high may, however, lead to higher mortality. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Limnology and Oceanography
volume
54
issue
2
pages
483 - 491
publisher
ASLO
external identifiers
  • wos:000265169800008
  • scopus:63549111067
ISSN
1939-5590
project
CAnMove
language
English
LU publication?
yes
id
a8bffbb9-9ea1-4558-86b0-41caffc35a17 (old id 1304209)
alternative location
http://www.aslo.org/lo/pdf/vol_54/issue_2/0483.pdf
date added to LUP
2009-03-18 11:32:25
date last changed
2017-09-10 04:08:43
@article{a8bffbb9-9ea1-4558-86b0-41caffc35a17,
  abstract     = {We assessed how zooplankton (copepods) handle the simultaneous threats of predators and ultraviolet (UV)<br/><br>
radiation and whether they respond with changes in pigmentation, vertical migration, or both. We found weak<br/><br>
vertical migration among copepods in response to UV stress, and this response was not apparently influenced by<br/><br>
predation risk. Exposure to high levels of UV radiation caused copepods to retain pigments in the absence of a<br/><br>
predation threat. When exposed to predation threat, they reduced their pigmentation regardless of UV level.<br/><br>
Thus, they ranked predation as a threat more severe than UV radiation. Reducing the protective pigment level in<br/><br>
response to predation in a situation in which UV radiation is high may, however, lead to higher mortality.},
  author       = {Hylander, Samuel and Larsson, Niklas and Hansson, Lars-Anders},
  issn         = {1939-5590},
  language     = {eng},
  number       = {2},
  pages        = {483--491},
  publisher    = {ASLO},
  series       = {Limnology and Oceanography},
  title        = {Zooplankton vertical migration and plasticity of pigmentation arising from simultaneous UV and predation threats},
  volume       = {54},
  year         = {2009},
}