Caenorhabditis elegans was observed to disperse bacteria by excreting viable cells after ingestion Anderson et al.
All rights reserved. Rarefaction curves demonstrated that bacterial clones were sampled exhaustively enough in all libraries, except for Aphelenchus sp. Furthermore, several nematodes contained suspected bacterial symbionts and parasites. Selective attraction of marine bacterivorous nematodes to their bacterial food.
Published by Blackwell Publishing Ltd. Such genera included intracellular life-style parasites Rickettsia and Rickettsia -like organisms, which were found in all nematodes except Prionchulus sp. The choice of feeding on less abundant bacteria could be due to a spatial restriction of bacteria in the soil pore system Nunan et al.
To obtain a more accurate phylogenetic assignment of the OTUs, the aligned sequences were divided into phyla and, in the case of Proteobacteria , into classes.
Entomopathogenic nematodes and their bacterial symbionts: Materials and methods. It furthers the University's objective of excellence in research, scholarship, and education by publishing worldwide.
This indicates a higher species richness as well as a greater evenness of their abundances in comparison with the bacterial communities associated with the nematodes. We analysed the diversity of bacterial communities associated with nematodes and compared it to the diversity that could be detected in their surrounding soil.
Cite Citation. Coxiellaceae was detected in plant-feeding Tylenchorhynchus sp. In the following, these clusters will be referred to as operational taxonomic units OTUs. Christoph Tebbe.
The Chao1 index S Chao1 was used to estimate total species richness and calculated with the bias-corrected equation: Article Contents. Notably, none of the OTUs present in the clone libraries of the nematode samples also occurred in the clone library obtained from the soil sample. If bacterial cells are large or filamentous, then nematodes with a small buccal cavity are not able to consume them Tietjen, 1980 ; Salinas et al.
Estimating prokaryotic diversity: Bacterial preferences of the bacterivorous soil nematode Cephalobus brevicauda Cephalobidae: The bacterial diversity associated with soil nematodes and its relationship with their feeding habits are as yet poorly understood.
The bacterial communities of the nematodes were found to contain representatives from different bacterial phyla and classes. Global patterns of diversity and community structure in marine bacterioplankton.
Article activity alert.