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Title:   Author  item
                                            Johnson, Alishaitem
                                            Schemerhorn, Brandiitem
                                            Shukle, Richard
  Submitted to: Entomological Society of America Annual Meeting North Central Branch
                                    Publication Type: Abstract Only
                                    Publication Acceptance Date: 3/1/2004
                                    Publication  Date: 3/29/2004
                                    Citation: Johnson, A.J., Schemerhorn, B.J. and Shukle, R.H.  2004. Revealing lineages of Hessian fly populations in the United States and worldwide. North Central Branch Meeting of the Entomological Society of America, Kansas City, MO Available:  http://esa.ent.iastate.edu/confreg/?gridaction=viewonepresentation&year=2004&presnum=033Interpretive Summary:
                                Technical Abstract: Hessian fly, Mayetiola destructor, is a destructive pest of wheat that occurs in all of the wheat producing regions of the United States. Thought to be endemic to the southern Caucasus region of Southwest Asia, Hessian fly dispersed west into North Africa and Europe before its introduction into North America in 1776. The pest has since spread across the continent causing substantial economic loss in wheat production through reduction in grain yield. Historical record states that a single introduction into North America occurred; however, to date, the pest has not been studied in reference to its ancestral origins in the Old World to test this hypothesis. Using sequence information from the 12S, 16S, and COII mitochondrial genes along with Transposable Element (TE) display, we are beginning to resolve the relationships within and between Hessian fly populations in the United States and between populations in the United States and the Old World. Results test the hypotheses that a single introduction accounts for the genetic variability of Hessian fly in the United States as well as the presumed location of the center of origin in Southwest Asia.


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