Is Hormogaster elisae (Oligochaeta,Hormogastridae) a predator of mites and springtails? |
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| Affiliation: | 1. Aarhus University, Department of Bioscience, Vejlsøvej 25, PO Box 314, 8600 Silkeborg, Denmark;2. Aarhus University, Department of Bioscience, C.F. Møllers Allé, Universitetesparken, 8000 Aarhus C, Denmark;1. Departamento de Zoología y Antropología Física, Facultad de Biología, Universidad Complutense de Madrid, Calle José Antonio Novais, 2, 28040 Madrid, Spain;2. Environmental Toxicology and Biology, Department of Mathematical Physics and Fluids, Facultad de Ciencias UNED, Calle Senda Del Rey 9, 28040 Madrid, Spain;3. Museum of Comparative Zoology, Department of Organismic and Evolutionary Biology, Harvard University, 26 Oxford Street, Cambridge, MA 02138, USA;1. Tallinn University of Technology, Tartu College, Puiestee 78, 51008, Tartu, Estonia;2. Nordic Botanical OÜ, Kõrgemäe talu, Soitsjärve, Tartu vald, Estonia;3. University of Tartu, Institute of Ecology and Earth Sciences, Vanemuise 46, 51014, Tartu, Estonia;1. Department of Life Sciences, University of Parma, Via Farini 90, Parma 43121, Italy;2. Department of Forest Engineering, Operaciones Básicas, E.T.S.I. Montes, Technical University of Madrid (UPM), Ciudad Universitaria s/n, Madrid 28040, Spain |
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| Abstract: | The aim of this work was to determine whether the endogeic earthworm Hormogaster elisae [1] is involved in the active or passive predation of microarthropods at El Molar (Madrid, Spain). Different techniques were employed to study the gut content, and the casts of H. elisae earthworms cultivated in the laboratory. The casts consisted mainly of mineral particles and plant remains as well as a few microarthropods, nematodes and their remains. The gut contents were similar in composition, although no microarthropod remains were found, except for a single springtail (order Poduromorpha) in one earthworm's gizzard. The results suggest that H. elisae may accidentally ingest microarthropods along with soil. The microarthropods found in the casts may have colonized them after their deposition since none were found in isolated casts. |
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