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Advisor(s)
Abstract(s)
Coccinellidae are well known predators in agroecosystems. In olive groves they may exert control against scales, such as the black scale, Saissetia oleae (Olivier, 1791). Laboratory studies on the
consumption of three phenological stages (eggs, first and second instar nymphs) of S. oleae by four
coccinellid species (Chilocorus bipustulatus, Scymnus (Pullus) subvillosus, Scymnus (Mimopullus)
mediterraneus and Scymnus (Scymnus) interruptus) were carried out. C. bipustulatus presented a
significantly high consumption of eggs, first and second instar nymphs compared with the other species.
All coccinellids consumed eggs and first instar nymphs; however the second instar nymphs were only
consumed by S. interruptus and C. bipustulatus. In a second experiment, larval stages of C. bipustulatus
were reared on different phenological stages of S. oleae. Coccinellid larvae fed with eggs or first instar
nymphs completed their life cycle, contrarily to those that were fed with second instar nymphs. The
apparent voracity of C. bipustulatus on the different phenological stages of S. oleae is an aspect that suggests
the possible use of this coccinellid species in biological control programs against this pest in
olive groves.
Description
Keywords
Predation Chilocorus bipustulatus Pullus (Mimopullus) mediterraneus Scymnus (Pullus) subvillosus Scymnus (Scymnus) interruptus Black scale
Citation
Santos, Sónia A.P.; Pereira, J.A.; Torres, L.; Nogueira, A.J.A. (2010). Voracity of coccinellid species on different phenological stages of the olive pest Saissetia oleae (Homoptera, Coccidae). Applied Ecology and Environmental Research. ISSN 1589-1623. 7:4, p. 359-365
Publisher
Corvinus University of Budapest