Seasonal occurrence and development of three closely related Oligonychus species (Acari: Tetranychidae) and their associated natural enemies on fagaceous trees

Experimental & Applied Acarology
S ShimazakiTetsuo Gotoh

Abstract

We compared the life cycles and diapause attributes among three closely related spider mites, Oligonychus castaneae on Castanea crenata, and O. gotohi and O. amiensis on Lithocarpus edulis. The lower thermal thresholds from egg to egg were 10.5, 8.5 and 8.9 °C, respectively, and the thermal constants were 177.8, 229.5 and 232.5 degree-days, respectively. The cumulative hatching rates of diapause eggs of O. castaneae and O. gotohi increased as the season progressed in and after early-to-mid January, which indicates diapause termination. In contrast, O. amiensis showed higher hatching rates in December and January, but hatchability gradually decreased in and after February because some of the eggs died from the cold. Oligonychus castaneae and O. gotohi females produced diapause eggs in response to the short photoperiod in late September to early October and in early-to-late October, respectively, which corresponded to the times predicted by the critical photoperiods (at 15 °C) of 12 h 15 min and 11 h 15 min for the respective species. Oligonychus castaneae showed at least a single population peak over the 3-year observation period, but the time of peak population varied from mid-July to mid-September. The population of O. gotohi ...Continue Reading

References

Jan 13, 2001·Experimental & Applied Acarology·T Gotoh, K Gomi
Feb 21, 2004·Experimental & Applied Acarology·Germano L D LeiteFlávio Marquini
Nov 2, 1984·Science·P Kareiva
Aug 6, 2010·Insect Biochemistry and Molecular Biology·Thomas Van LeeuwenLuc Tirry
Mar 3, 2012·Experimental & Applied Acarology·Mohammad Shaef UllahTetsuo Gotoh
Feb 20, 2013·Scientific Reports·J I BlanfordM B Thomas
May 1, 2013·Global Change Biology·Krijn P PaaijmansMatthew B Thomas
Jan 1, 2009·Language Learning and Development : the Official Journal of the Society for Language Development·Daniel J WeissAaron D Mitchel

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Citations

Dec 1, 2019·Journal of Economic Entomology·Mohammad Shaef UllahTetsuo Gotoh

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