Reproductive performance of the generalist predator Hypoaspis aculeifer (Acari : Gamasida) when foraging on different invertebrate preyHeckmann, L. H., Ruf, A., Nienstedt, K. M. and Krogh, P. H. (2007) Reproductive performance of the generalist predator Hypoaspis aculeifer (Acari : Gamasida) when foraging on different invertebrate prey. Applied Soil Ecology, 36 (2-3). pp. 130-135. ISSN 0929-1393 Full text not archived in this repository. It is advisable to refer to the publisher's version if you intend to cite from this work. See Guidance on citing. To link to this item DOI: 10.1016/j.apsoil.2007.01.002 Abstract/SummaryIn this study, we assessed the influence of prey quality and prey biomass during a standardized 3-week test on adult survival and reproductive output of the predatory mite Hypoaspis aculeifer when fed one of six different diets: springtails (Folsomia candida and Folsomia fimetaria), a storage mite (Caloglyphus cf. michaeli), an oligochaete (Enchytraeus crypticus), a nematode (Turbatrix silusiae), and a 1:1:1 mix of F. candida:F.fimetaria:E. crypticus. Our results revealed that a single prey species may be nutritionally sufficient for a 3-week period, as H. aculeifer performed equally well, or better, on a diet based on a 1:1:1 mix of F. candida:F. fimetaria:E. crypticus. However, when fed C. cf. michaeli, H. aculeifer had a poor reproductive output (< 200 juveniles) and a reduced survival (60-70%). Thus, investigators should validate their choice of prey prior to testing H. aculeifer performance during toxicant exposure. (c) 2007 Elsevier B.V. All rights reserved.
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