Potential of the Blattisocius mali Mite (Acari: Blattisociidae) as a Biological Control Agent of Potato Tubermoth (Lepidoptera: Gelechiidae) in Stored Potatoes

  • J. R. Gallego
  • M. Gamez
  • T. CabelloEmail author


Potato tubermoth (PTM) Phthorimaea operculella (Lep.: Gelechiidae) is one of the pest species affecting Solanaceae worldwide. It can cause up to 80% of losses in potato open air crops as well as damage up to 100% of tubers during storage. Blattisocius (= Typhlodromus) mali (Acari: Blattisociidae), a predatory mite, was studied as a potential biological control agent of PTM. A prey acceptance bioassay of PTM eggs was carried out. Additionally, two bioassays have been conducted under microcosm conditions, which assessed the densities of mite releases at two levels of PTM infestation. The results showed that B. mali female adults accept PTM eggs as prey, and they cause a mortality rate 89.63 ± 2.47%, 48 h later. In addition to this, under microcosm conditions with potato tubers, we found at low infestation level that the effectiveness of the predatory mite varied from 72.50 ± 28.50 to 100%, 28 days later, according to the release rate of mites. Under high infestation level, the effectiveness of biological control of the pest varied from 53.36 ± 25.55 to 92.51 ± 7.88%, also according to the release rate of the mites. The possible use of biological control with B. mali of PTM, in different types of potato storage, is analysed and discussed.


Non-refrigerated storage Phthorimaea operculella Prey acceptance 


Funding Information

This work has been funded within the project titled: Development of new methods for the integrated management of potato moths Phthorimaea operculella and Tecia solanivora (Ref.: RTA2015-00074-C02-00). It was funded within the programme of main research projects in 2015 and complementary actions within the framework of the state programme R + D + I aimed at society challenges (safety and food quality challenge, sustainable and productive agrarian activity, sustainability of natural resources and sea and marine research). The National Institute for Agricultural and Food Research and Technology (INIA) and Ministry of Economy and Competitiveness, Spain (and European Regional Development Fund, ERDF).

Compliance with Ethical Standards

Conflict of Interest

The authors declare that they have no conflict of interest.


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Copyright information

© European Association for Potato Research 2019

Authors and Affiliations

  1. 1.Department of Biology and Geology, Higher Engineering SchoolUniversity of AlmeriaAlmeriaSpain
  2. 2.Department of Mathematics, Higher Engineering SchoolUniversity of AlmeriaAlmeriaSpain

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