A study was conducted to evaluate the predatism of the staphilinid beetle(Oligota yasumatsui K.) and some lady beetles (five varieties of Harmonia axyrids, and Cocyinalla bruckii Mul.) on the citrus red mites (Panonychus citri McG.) and the citrus aph...
A study was conducted to evaluate the predatism of the staphilinid beetle(Oligota yasumatsui K.) and some lady beetles (five varieties of Harmonia axyrids, and Cocyinalla bruckii Mul.) on the citrus red mites (Panonychus citri McG.) and the citrus aphids(Toxoptera citricidus K.).
The adults of the staphilinid beetle preyed on from 8.6 to 9.5 citrus red mites per day. The potentials of the lady beetle larvae (Harmonia axyridis var. 19-signata) to consume the aphids and the mites per day were 27.0 and 3.7 at the first stadium, 27.1 and 3.0 at the second stadium, 37.2 and 2.9 at the third stadium, and 46.0 and 2.9 at the fourth stadium, respectively.
Regardless the varieties and/or species of the lady beetles, the adults much more consumed and prefered the aphids than mites.
There was no specific relationships between predatism of the predators and temperature/humidity in this study.