Start Date: Aug 02, 2010
End Date: Aug 01, 2012
Greenbug aphids will be collected from crop and non-crop hosts in three regions of the Old World: Europe, the Middle East, and North Africa. mtDNA and nDNA from each aphid will be sequenced. DNA sequences will be used to determine the degree of relatedness of greenbug populations. This information will be used to determine if the greenbug found in the US and Old World are the same species, and/or how closely related they are. The geographical origin of S. graminum will be determined, i.e., Palearctic or Nearctic.