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Grazer-induced chai...
Grazer-induced chain length plasticity reduces grazing risk in a marine diatom
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- Bergkvist, Johanna, 1980 (author)
- Gothenburg University,Göteborgs universitet,Centrum för marin kemisk ekologi,Institutionen för biologi och miljövetenskap,Centre for Marine Chemical Ecology,Department of Biological and Environmental Sciences
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- Thor, Peter, 1965 (author)
- Gothenburg University,Göteborgs universitet,Institutionen för biologi och miljövetenskap,Department of Biological and Environmental Sciences
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Jakobsen, H. H. (author)
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- Wängberg, Sten-Åke, 1955 (author)
- Gothenburg University,Göteborgs universitet,Institutionen för biologi och miljövetenskap,Centrum för marin kemisk ekologi,Department of Biological and Environmental Sciences,Centre for Marine Chemical Ecology
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- Selander, Erik, 1973 (author)
- Gothenburg University,Göteborgs universitet,Institutionen för biologi och miljövetenskap,Centrum för marin kemisk ekologi,Department of Biological and Environmental Sciences,Centre for Marine Chemical Ecology
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(creator_code:org_t)
- 2012-01-16
- 2012
- English.
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In: Limnology and Oceanography. - : Wiley. - 0024-3590. ; 57:1, s. 318-324
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Abstract
Subject headings
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- We show that Skeletonema marinoi suppresses chain formation in response to copepod cues. The presence of three different copepod species (Acartia tonsa, Centropages hamatus, or Temora longicornis) significantly reduced chain length. Furthermore, chain length was significantly reduced when S. marinoi was exposed to chemical cues from caged A. tonsa without physical contact with the responding cells. The reductions in chain length significantly reduced copepod grazing; grazing rates on chains (four cells or more) were several times higher compared to that of single cells. This suggests that chain length plasticity is a means for S. marinoi to reduce copepod grazing. In contrast, chain length was not suppressed in cultures exposed to the microzooplankton grazer Gyrodinium dominans. Size-selective predation may have played a key role in the evolution of chain formation and chain length plasticity in diatoms.
Subject headings
- NATURVETENSKAP -- Biologi -- Ekologi (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences -- Ecology (hsv//eng)
- NATURVETENSKAP -- Biologi (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences (hsv//eng)
Keyword
- skeletonema-costatum
- calanus-helgolandicus
- narragansett-bay
- colony formation
- acartia-clausi
- chemical cues
- size
- phytoplankton
- growth
- consequences
Publication and Content Type
- ref (subject category)
- art (subject category)
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