Psocids: weight losses of grain and biological control by pseudoscorpions

TitlePsocids: weight losses of grain and biological control by pseudoscorpions
Publication TypeBook Chapter
Year of Publication2006
AuthorsPascual-Villalobos, MJ
EditorBacaltchuk, B, Beckel, H, Deckers, D, Sundfeld, E, dos Santos, JP, Biagi, JD, Celaro, JC, Faroni, LRD'A, Bortolini, LdeOF, Sartori, MR, Elias, MC, Guedes, RNC, da Fonseca, RG, Scussel, VM
Book TitleProceedings of the 9th International Working Conference on Stored Product Protection, 15 to 18 October 2006, Campinas, São Paulo, Brazil. Brazilian Post-harvest Association - ABRAPOS, Passo Fundo, RS, Brazil, 2006
Pagination1083-1086
CityPasso Fundo, RS, Brazil
ISBN NumberISBN 8560234004
KeywordsPseudoscorpiones2$
Abstract

Psocids are common pests of stored rice in Spain. Weight losses of grain were measured after two week infestations. Milled rice lost 0.75% of weight when the grain was exposed to a population of 256 psocids / gram of grain, whilst there was not any measurable damage for paddy in the same conditions. The pseudoscorpion <i>Whitius piger </i>E. Simon preyed on psocids causing 74-100 % of mortality (in the presence or absence of rice grains) in confined glass vials in the laboratory.