A bait and trap method for sampling symphylid populations in pineapple
We developed a standardized method to monitor the symphylids (Hanseniella sp.) populations in pineapple using bait and traps. Two methods for symphylid extraction and enumeration were tested. Two statistical methods, the "variance/mean" ratio and a spatial analysis (Moran and Geary indices) were used to describe the type of spatial distribution of the populations. This bait and trap method allows a good evaluation of the symphylid populations. The ratio between adults and larvae may be used as an indicator of the population growth statute. Data collected on a rotation crop for pineapple, Mucuna pruriens var. utilis, showed that symphylids populations are highly aggregated following a negative binomial distribution. Finally, the method has been validated in plots of 'MD-2' pineapple to monitor the symphylids populations at different stages of development of the crop.
| Main Authors: | , , , , , |
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| Format: | conference_item biblioteca |
| Language: | eng |
| Published: |
ISHS [Belgique]
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| Subjects: | H10 - Ravageurs des plantes, |
| Online Access: | http://agritrop.cirad.fr/561778/ |
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