Access the full text.
Sign up today, get DeepDyve free for 14 days.
The aim of this study was to enhance current knowledge of thus far largely neglected meiofaunal–macrofaunal trophic channels in freshwater ecosystems. The strength and shape (functional response) of the predator–prey interaction between two freshwater triclad flatworm species (Polycelis tenuis and Planaria torva) and individuals of the nematode species Caenorhabditis elegans were measured in a set of laboratory experiments. We hypothesized that feeding on adult nematodes results in a hyperbolic type II, whereas juvenile prey led to sigmoidal type III functional response and that different habitat textures would affect predation success by providing refuge for prey. However, our results revealed that both flatworm species exhibited type III sigmoidal functional response curves and the smallest predator consistently ingested larger amounts of nematodes. Generally, our results suggest the existence of a strong predator–prey interaction, given that both flatworms daily ingested a significant proportion of their biomass by feeding only on nematodes (up to 30% for P. tenuis). However, P. torva was unable to process nematodes in sandy sediment, and the ingestion rates of both flatworm species were reduced in a complex litter habitat.
Hydrobiologia – Springer Journals
Published: May 17, 2018
Read and print from thousands of top scholarly journals.
Already have an account? Log in
Bookmark this article. You can see your Bookmarks on your DeepDyve Library.
To save an article, log in first, or sign up for a DeepDyve account if you don’t already have one.
To subscribe to email alerts, please log in first, or sign up for a DeepDyve account if you don’t already have one.
Copy and paste the desired citation format or use the link below to download a file formatted for EndNote
Reference ManagersExport to EndNote
To get new article updates from a journal on your personalized homepage, please log in first, or sign up for a DeepDyve account if you don’t already have one.