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Further investigations into the efficacy of Neomolgus capillatus (Kramer) (Acarina: Bdellidae) as a predator of Sminthurus viridis (L.) (Collembola: Sminthuridae) in Tasmania

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Abstract

Efficacy data collected from dairy pastures in northern and north-eastern Tasmania showed that the addition of the spiny snout mite, Neomolgus capillatus, into the established predator complex resulted in effective control of autumn populations of the lucerne flea, Sminthurus viridis, at all study sites. Mean reductions in S. viridis density of about 93% were recorded. However, the control of spring populations of S. viridis was variable and less effective. Although mean density reductions of approximately 86% were recorded, N. capillatus and other mite predators became active too late in the season to prevent S. viridis reaching damaging levels. These results support those of a previous study conducted in far north-western Tasmania, indicating that the variation in seasonal efficacy of N. capillatus is the same throughout Tasmanian dairy pastures.
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Keywords: biological control; lucerne flea; spiny snout mite

Document Type: Research Article

Publication date: January 1, 2002

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