A bait and trap method for sampling symphylid populations in pineapple

Marie Alphonsine Paul-Alex, Fournier Patrick, Dole Bernard, Govindin Jean-Claude, Quénéhervé Patrick, Soler Alain. 2010. A bait and trap method for sampling symphylid populations in pineapple. In : 7th ISHS Pineapple Symposium, July 13-15, 2010, Johor, Malaysia. s.l. : s.n., Résumé, 1 p. International Pineapple Symposium. 7, Johor Bahru, Malaisie, 13 Juillet 2010/15 Juillet 2010.

Matériel d'accompagnement : 1 diaporama (16 vues)

Résumé : We developed a standardized method to monitor the Symphylids (Hanseniella sp) populations in pineapple using bait and traps. Two methods for symphylid extraction and counting 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 on MD2 pineapple plots to monitor the symphylids populations at different stages of development of the crop. (Texte intégral)

Classification Agris : H10 - Ravageurs des plantes

Auteurs et affiliations

• Marie Alphonsine Paul-Alex, CIRAD-PERSYST-UPR Systèmes bananes et ananas (MTQ)
• Fournier Patrick, CIRAD-PERSYST-UPR Systèmes bananes et ananas (REU)
• Dole Bernard, CIRAD-PERSYST-UPR Systèmes bananes et ananas (GLP)
• Govindin Jean-Claude, CIRAD-PERSYST-UPR Systèmes bananes et ananas (GLP)
• Quénéhervé Patrick, IRD (MTQ)
• Soler Alain, CIRAD-PERSYST-UPR Systèmes bananes et ananas (MTQ)

Source : Cirad - Agritrop (https://agritrop.cirad.fr/557984/)

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