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Low-latitude zooplankton pigmentation plasticity in response to multiple threats

Author:
  • Marcus Lee
  • Huan Zhang
  • Yongcui Sha
  • Alexander Hegg
  • Gustaf Ekelund Ugge
  • Jerker Vinterstare
  • Martin Škerlep
  • Varpu Pärssinen
  • Simon David Herzog
  • Caroline Björnerås
  • Raphael Gollnisch
  • Emma Johansson
  • Nan Hu
  • P. Anders Nilsson
  • Kaj Hulthén
  • Karin Rengefors
  • R. Brian Langerhans
  • Christer Brönmark
  • Lars Anders Hansson
Publishing year: 2019-07-01
Language: English
Publication/Series: Royal Society Open Science
Volume: 6
Issue: 7
Document type: Journal article
Publisher: Royal Society

Abstract english

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.

Keywords

  • Ecology
  • Calanoida
  • Colorimetric method
  • Cyclopoida
  • Freshwater
  • Predation
  • Ultraviolet radiation

Other

Published
  • ISSN: 2054-5703
Christer Brönmark
E-mail: christer [dot] bronmark [at] biol [dot] lu [dot] se

Head of unit

Division aquatic ecology

+46 46 222 37 02

+46 73 081 55 48

E-C125

Sölvegatan 37, Lund

50

Professor

Aquatic Ecology

50

Professor

Division aquatic ecology

+46 46 222 37 02

+46 73 081 55 48

E-C125

Sölvegatan 37, Lund

50

Research group

Aquatic Ecology

Projects

Doctoral students and postdocs

PhD students, main supervisor

Jerker Vinterstare

PhD students, assistant supervisor

  • Nan Hu
  • Varpu Pärssinen
  • Yongcui Sha
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