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Zooplankton vertical migration and plasticity of pigmentation arising from simultaneous UV and predation threats
Lunds universitet. (MPEA ; Zooplankton Ecology)ORCID iD: 0000-0002-3740-5998
Lunds universitet.
Lunds universitet.
2009 (English)In: Limnology and Oceanography, ISSN 0024-3590, E-ISSN 1939-5590, Vol. 54, no 2, 483-491 p.Article in journal (Refereed) Published
Abstract [en]

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.

Place, publisher, year, edition, pages
2009. Vol. 54, no 2, 483-491 p.
National Category
Ecology
Research subject
Ecology, Aquatic Ecology
Identifiers
URN: urn:nbn:se:lnu:diva-28721DOI: 10.4319/lo.2009.54.2.0483ISI: 000265169800008OAI: oai:DiVA.org:lnu-28721DiVA: diva2:650931
Available from: 2013-09-24 Created: 2013-09-05 Last updated: 2017-12-06Bibliographically approved

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Hylander, Samuel

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