Russian Wheat Aphid

Diuraphis NoxiaRussian Wheat Aphid

Name

Kingdom: AnimaliaPhylum: ArthropodaClass: InsectaBinomial Nomenclature: Diuraphis noxiaDistributionFrom Eurasia (central and western)Came to U.S. in 1986Brought to Texas accidentally from MexicoCan now be found in many western states (California, Colorado, Nevada, etc.)

Map Of Distributionover all years

4What Effects Has it Caused?(People)Mostly eats Wheat and BarleyMain economic effect: Farmers lose money by losing crops and by buying pesticides

What Effects Has it Caused?(Ecosystems)To save money by not buying pesticides, types of flies have been introduced to stop the aphids

Food Chain Wheat

BarleySunAphidLadybugFliesReasons For SuccessMany predators such as lady beetles are too large to enter the rolled leaves Reproduce Asexually and all are female

In The FutureAttempts to Stop the MenaceFarmers can plant their crops earlyTrade off- unanticipated weatherMaking sure plants are not under water stressTrade off- might over water plantsNot planting wheat or barleyTrade off- fewer wheat and barley for us(consumers)

Infected Crops

The Aphid injects a toxin into the plant while feeding and causes damageThe leaves then get white longitudinal streaksThe leaf then curls up

Different TypesWinged (alate)- when the plant dies several nymphs grow wingsThey seek a new host plantDark green thoraxWingless (apterous)- produce many children Normal green thorax

http://www.invasivespeciesinfo.gov/animals/rwa.shtmlhttp://www.ipm.ucdavis.edu/PMG/r730300211.htmlhttp://www.ksre.ksu.edu/library/entml2/mf2666.pdfhttp://ces.uwyo.edu/PUBS/B1013.07.pdf