Population dynamics of mites in slow-release sachets used in biological control: A new study methodology
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Gallego Granados, Juan Ramón; Solano-Rojas, Yohan; Tiseyra, Bruno; Gámez Cámara, Manuel Angel; Cabello García, TomásFecha
2024-04-09Resumen
Predatory mite species (Acari: Phytoseiidae) are essential tools in the biological control of greenhouses pests. The natural enemies can be released directly into a crop. A better, partly preventive system is to place slow-release sachets on the plants. Inside such sachets is a factitious prey's food substrate – which also acts as refuge – and the predator. The objective of this study was to develop a new methodology to evaluate the population dynamics of this sachet system, based on the factitious prey Carpoglyphus lactis and the predatory mite Amblyseius swirskii. Through two tests carried out under laboratory conditions, the sachets were first compared to the traditional extraction method that uses Berlese-Tullgren funnels and an extraction method using flotation in hexane. The latter method proved more effective at sampling the motile states (larvae, nymphs, and adults), both for the predatory species and for the factitious prey, extracting up to 3.7× more mites than the Berlese-Tu...
Palabra/s clave
Acarology
predatory mite
Methodology
Phytoseiidae
Carpoglyphidae
Amblyseius swirskii
Carpoglyphus lactis
Hexane flotation
quality control