THE POPULATION OF MANGOSTEEN THRIPS (THYSANOPTERA: THRIPIDAE) IN NAKHON SI THAMMARAT, THAILAND

T. Thongier, J. Thongier , C. Preecha
The population of mangosteen thrips was studied in the farmers’ orchards in Nakhon Si Thammarat, Thailand from September 2008 to July 2010. Two species of thrips; S. dorsalis Hoods and S. oligochaetus Karny, were found as the dominant species. Thrip population was directly related to the mangosteen growth cycle such as young leaf, flowering and young fruit stages. During the first and second year-round off-season productions, thrip abundance peaked in October with 0.31-0.88 and 0.11-0.36 thrips/shoot in September, respectively. During the first and second year-round in-season production, thrip abundance peaked in April; the amount of thrips was 0.11-0.13 and 0.03-0.36 thrips/shoot, respectively. The damage at flowering and young fruit stages was caused by rough scarring on fruit surface and calyx. Percentages of rough scarring on fruit surface during the 1st and 2nd off-season were 13.30-28.49 and 20.06-36.27, respectively, while during the in-season they were 10.64-30.36 and 15.95-25.36%, respectively. Percentages of rough scarring on fruit surface and calyx at harvesting time were 100%. At mid-harvest and late-harvest times, there were more fruit gamboges than at early-harvest time.
Thongier, T., Thongier , J. and Preecha, C. (2014). THE POPULATION OF MANGOSTEEN THRIPS (THYSANOPTERA: THRIPIDAE) IN NAKHON SI THAMMARAT, THAILAND. Acta Hortic. 1024, 307-312
DOI: 10.17660/ActaHortic.2014.1024.42
https://doi.org/10.17660/ActaHortic.2014.1024.42
Scirtothrips dorsalis, off-season, thrips abundance, fruit gamboges
English

Acta Horticulturae