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Low-latitude zooplankton pigmentation plasticity in response to multiple threats

Lee, Marcus LU ; Zhang, Huan LU ; Sha, Yongcui LU ; Hegg, Alexander LU ; Ugge, Gustaf Ekelund LU ; Vinterstare, Jerker LU ; Škerlep, Martin LU ; Pärssinen, Varpu LU ; Herzog, Simon David LU and Björnerås, Caroline LU , et al. (2019) In Royal Society Open Science 6(7).
Abstract

Crustacean copepods in high-latitude lakes frequently alter their pigmentation facultatively to defend themselves against prevailing threats, such as solar ultraviolet radiation (UVR) and visually oriented predators. Strong seasonality in those environments promotes phenotypic plasticity. To date, no one has investigated whether low-latitude copepods, experiencing continuous stress from UVR and predation threats, exhibit similar inducible defences. We here investigated the pigmentation levels of Bahamian 'blue hole' copepods, addressing this deficit. Examining several populations varying in predation risk, we found the lowest levels of pigmentation in the population experiencing the highest predation pressure. In a laboratory... (More)

Crustacean copepods in high-latitude lakes frequently alter their pigmentation facultatively to defend themselves against prevailing threats, such as solar ultraviolet radiation (UVR) and visually oriented predators. Strong seasonality in those environments promotes phenotypic plasticity. To date, no one has investigated whether low-latitude copepods, experiencing continuous stress from UVR and predation threats, exhibit similar inducible defences. We here investigated the pigmentation levels of Bahamian 'blue hole' copepods, addressing this deficit. Examining several populations varying in predation risk, we found the lowest levels of pigmentation in the population experiencing the highest predation pressure. In a laboratory experiment, we found that, in contrast with our predictions, copepods from these relatively constant environments did show some changes in pigmentation subsequent to the removal of UVR; however, exposure to water from different predation regimes induced minor and idiosyncratic pigmentation change. Our findings suggest that low-latitude zooplankton in inland environments may exhibit reduced, but non-zero, levels of phenotypic plasticity compared with their high-latitude counterparts.

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published
subject
keywords
Calanoida, Colorimetric method, Cyclopoida, Freshwater, Predation, Ultraviolet radiation
in
Royal Society Open Science
volume
6
issue
7
publisher
Royal Society
external identifiers
  • scopus:85070771938
ISSN
2054-5703
DOI
10.1098/rsos.190321
language
English
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yes
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b8434403-addc-43f6-9505-252bd7ce3b7a
date added to LUP
2019-09-05 13:01:01
date last changed
2019-09-17 05:00:22
@article{b8434403-addc-43f6-9505-252bd7ce3b7a,
  abstract     = {<p>Crustacean copepods in high-latitude lakes frequently alter their pigmentation facultatively to defend themselves against prevailing threats, such as solar ultraviolet radiation (UVR) and visually oriented predators. Strong seasonality in those environments promotes phenotypic plasticity. To date, no one has investigated whether low-latitude copepods, experiencing continuous stress from UVR and predation threats, exhibit similar inducible defences. We here investigated the pigmentation levels of Bahamian 'blue hole' copepods, addressing this deficit. Examining several populations varying in predation risk, we found the lowest levels of pigmentation in the population experiencing the highest predation pressure. In a laboratory experiment, we found that, in contrast with our predictions, copepods from these relatively constant environments did show some changes in pigmentation subsequent to the removal of UVR; however, exposure to water from different predation regimes induced minor and idiosyncratic pigmentation change. Our findings suggest that low-latitude zooplankton in inland environments may exhibit reduced, but non-zero, levels of phenotypic plasticity compared with their high-latitude counterparts.</p>},
  articleno    = {190321},
  author       = {Lee, Marcus and Zhang, Huan and Sha, Yongcui and Hegg, Alexander and Ugge, Gustaf Ekelund and Vinterstare, Jerker and Škerlep, Martin and Pärssinen, Varpu and Herzog, Simon David and Björnerås, Caroline and Gollnisch, Raphael and Johansson, Emma and Hu, Nan and Nilsson, P. Anders and Hulthén, Kaj and Rengefors, Karin and Langerhans, R. Brian and Brönmark, Christer and Hansson, Lars Anders},
  issn         = {2054-5703},
  keyword      = {Calanoida,Colorimetric method,Cyclopoida,Freshwater,Predation,Ultraviolet radiation},
  language     = {eng},
  month        = {07},
  number       = {7},
  publisher    = {Royal Society},
  series       = {Royal Society Open Science},
  title        = {Low-latitude zooplankton pigmentation plasticity in response to multiple threats},
  url          = {http://dx.doi.org/10.1098/rsos.190321},
  volume       = {6},
  year         = {2019},
}