Search results for "Acrobeloide"
showing 2 items of 2 documents
Predicting and testing functional responses: An example from a tardigrade–nematode system
2008
Abstract Numerous studies have empirically measured consumer functional responses or theoretically developed response models, but whether these models can quantitatively predict observed data has hardly been tested. We perform such a test for the terrestrial predator–prey system Macrobiotus richtersi (Tardigrada)– Acrobeloides nanus (Nematoda). For two different size classes of A. nanus , we report a functional response as measured in the laboratory and quantitatively compare it to predictions of three models with different degrees of complexity: (1) the disc equation which does not include satiation effects; (2) the steady-state satiation (SSS) equation which assumes a constant level of pr…
Biodiversity of nematofauna associated with the rice field agro-ecosystem in north Italy
2008
This research is intended to give an idea on the soil biodiversity associated with the rice field agro-ecosystem. The research was carried out in two areas of North Italy where Oryza sativa is a traditional crop. The nematodes were extracted from soil samples and from the rhizosphere of rice plants. The nematode community was investigated for the genus composition, trophic structure and biodiversity. 22 families and 45 different genera were recorded. The dominant trophic group was the bacteriophagous with the genus Rhabditis. Other important genera were Pratylenchus, Helicotylenchus and Acrobeloides. Phytophagous represent in almost all fields not more than the 20% of the total nematodes. I…