Universität zu Köln

Neidig, Nina, Jousset, Alexandre, Nunes, Frank, Bonkowski, Michael ORCID: 0000-0003-2656-1183, Paul, Ruediger J. and Scheu, Stefan (2010). Interference between bacterial feeding nematodes and amoebae relies on innate and inducible mutual toxicity. Funct. Ecol., 24 (5). S. 1133 - 1139. MALDEN: WILEY-BLACKWELL. ISSN 0269-8463

Full text not available from this repository.

Abstract

P>1. Protozoa and nematodes are important microfauna predators in soil and compete for the same food resource, bacteria. Therefore, inhibition of competitors may enhance food acquisition and fitness of individual predator species. 2. We investigated chemical based interference between the nematode Caenorhabditis elegans and the amoeba Acanthamoeba castellanii in a bacteria-free gnotobiotic system. 3. Exoproducts of amoebae exhibited marked nematostatic activity, and repelled the worms. However, nematodes were able to reduce the activity of proteases and glycosidases, two enzymes playing an important role in the toxicity of A. castellanii. Exoproducts of nematodes also detrimentally affected amoebae by reducing growth and increasing encystation. 4. The results indicate that both protozoa and nematodes can inhibit each other, and that nematodes are also able to counteract the attack by protist competitors. Non-trophic interactions appear thus as a new factor affecting the structure of predator communities in soil.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Neidig, Nina UNSPECIFIED UNSPECIFIED UNSPECIFIED Jousset, Alexandre UNSPECIFIED UNSPECIFIED UNSPECIFIED Nunes, Frank UNSPECIFIED UNSPECIFIED UNSPECIFIED Bonkowski, Michael UNSPECIFIED orcid.org/0000-0003-2656-1183 UNSPECIFIED Paul, Ruediger J. UNSPECIFIED UNSPECIFIED UNSPECIFIED Scheu, Stefan UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-495573
DOI:	10.1111/j.1365-2435.2010.01718.x
Journal or Publication Title:	Funct. Ecol.
Volume:	24
Number:	5
Page Range:	S. 1133 - 1139
Date:	2010
Publisher:	WILEY-BLACKWELL
Place of Publication:	MALDEN
ISSN:	0269-8463
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language CAENORHABDITIS-ELEGANS; C-ELEGANS; ACANTHAMOEBA-CASTELLANII; STRESS RESPONSES; CHEMOTAXIS; DIFFERENTIATION; PREFERENCES; RHIZOSPHERE; POLYPHAGA; PROTEASE Multiple languages Ecology Multiple languages
URI:	http://kups.ub.uni-koeln.de/id/eprint/49557