Drosera Rotundifolia

May Lattanzio

Joined February 2008

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  • Artwork Comments 3

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Artist's Description

A sundew found in seeps and roadside ditches. Bayou George, Northwest Florida. It grows in flat rosettes. I left the pine needle there for comparison. It lives in community with the threadleaf sundew.

The following comes from Springerlink:

Summary Earlier feeding experiments with Drosera in the field using adult Drosophila melanogaster as prey had shown that D. intermedia reacts three times as strong with respect to biomass production as the sympatric species D. rotundifolia. The present study shows that in D. rotundifolia only 29% of added flies remain on the leaves for more than 24 h, but 95% in D. intermedia. Opportunistic predators, mostly ants, are likely to be responsible for this difference. Ants were often observed robbing food from the leaves of D. rotundifolia, and showed a much higher activity in the microhabitat of this species. In both species of Drosera larger individuals were better than smaller ones in retaining added flies. The activity of ants significantly increased with air temperature and the duration of sunshine. The advantage of plundering seems to be more important for the ants than the danger of being caught. The prey collected from Drosera may be an important source of food for bog-dwelling ants.

Artwork Comments

  • Carla Wick/Jandelle Petters
  • Digitalbcon
  • lcbirder
desktop tablet-landscape content-width tablet-portrait workstream-4-across phone-landscape phone-portrait
desktop tablet-landscape content-width tablet-portrait workstream-4-across phone-landscape phone-portrait

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