Habitat differentiation and feeding strategies in water mites in Lake Maarsseveen I
- 1) Department of Aquatic Ecology, University of Amsterdam, Kruislaan 320, 1098 SM, Amsterdam, the Netherlands
The habitat preference as regards depth and vegetation areas is discussed for a number ofPiona species.P. conglobata mainly walks over the water plants and undertakes swimming excursions of short duration from there.Arrenurus crassicaudatus is a bottom dweller. This behaviour is related to the searching activities for preys. The main food ofA. crassicaudatus consists of ostracods.P. conglobata prefersDaphnia aboveCyclops, while forUnionicola crassipes the reverse holds true.P. conglobata andU. crassipes do not recognize ostracods as possible preys. The relative prey size greatly influences the rate of catching success. The feeding strategies (catching behaviour, prey preferences and handling time) of these three species are discussed. Differences in these strategies are also considered in view of species diversity.
- 1 - sciences appliquees, technologies et medecines
- 2 - sciences biologiques et medicales
- 3 - sciences biologiques fondamentales et appliquees. psychologie
- 4 - vecteurs d'importance medicale, nuisances, depredateurs des denrees et materiaux: surveillance des populations et lutte
- 1 - Life Sciences ; 2 - Agricultural and Biological Sciences ; 3 - General Agricultural and Biological Sciences