Australian Scirtothrips aurantii Faure (Thysanoptera: Thripidae) only survived on mother-of-millions (Bryophyllum delagoense) in a no-choice trial

A.G. MannersA and K. DhileepanB

A CRC for Australian Weed Management, School of Integrative Biology, The University of Queensland (UQ), Queensland 4072, Australia.

B Alan Fletcher Research Station, Queensland Department of Natural Resources and Mines (QDNRM), 27 Magazine Street, Sherwood, Queensland 4075, Australia.


Summary

The South African citrus thrips Scirtothrips aurantii has recently been discovered in Australia for the first time, primarily on Bryophyllum delagoense, a declared noxious weed commonly known as mother-of-millions. A preliminary study was conducted to ascertain if the Australian population of S. aurantii would survive on citrus or mango in a no choice test. Thrips were placed on potted plants and surveyed after six weeks. The number of S. aurantii in each test plant was recorded, as was any feeding damage. Scirtothrips aurantii were recovered from B. delagoense only. Further study is required to confirm the host status of Australian S. aurantii and determine the relationship between the populations of S. aurantii in Australia and South Africa.

Key words: South African citrus thrips, host preference, mother-of-millions, Scirtothrips aurantii, Bryophyllum delagoense.

 

Plant Protection Quarterly (2005) 20 (1) 33-35.