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

Forskningsoutput: TidskriftsbidragArtikel i vetenskaplig tidskrift

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 which UV radiation is high may, however, lead to higher mortality.

Detaljer

Författare
Enheter & grupper
Forskningsområden

Ämnesklassifikation (UKÄ) – OBLIGATORISK

  • Ekologi
Originalspråkengelska
Sidor (från-till)483-491
TidskriftLimnology and Oceanography
Volym54
Utgivningsnummer2
StatusPublished - 2009
PublikationskategoriForskning
Peer review utfördJa

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