Alternate Hosts of Russian Wheat Aphid (Homoptera: Aphididae)

Genetic variation and phylogenetic relationships among worldwide collections of the Russian wheat aphid, Diuraphis noxia (Mordvilko), inferred from allozyme and RAPD-PCR markers

“…and Canada (Stoetzel, 1987). This aphid has the ability to utilize a large number of grasses (Kindler & Springer, 1989) other than cereals, increasing the likelihood of establishment in new habitats. Furthermore, both anholocyclic and holocyclic reproduction is known in D. noxia populations (Kiriac et a!,, 1990).…”

Effect of Russian Wheat Aphid on Cold Hardiness and Winterkill of Overwintering Winter Wheat

“…Third, when host plants deteriorate, aphids respond by producing winged forms which can be transported long distances by wind (Mittler and Sutherland 1969). In agreement with these ecological considerations, RWA has extensively colonized drier areas of western North America but has not moved eastward out of the rain shadow of the Rockies (Kindler and Springer 1989). …”

“…a strong ecological preference for relatively dry areas (Kindler and Springer 1989 (Aalbersberg et al 1987;Webster and Starks 1987). RWA may be eradicated only if the winter is severe or if there is heavy spring snowfall.…”

Insect, Mite, and Nematode Pests of Oat

“…Data from central Spain indicate that the RWA is present on wheat particularly in very dry years (Castanera & Gutierrez, 1985). To date, the RWA has been capable of surviving the summer in most of the wheat-growing areas where it has been detected in the USA, living on grasses (Kindler & Springer, 1989) and volunteer wheat plants as alternate hosts.…”

“…Host suitability and harboring of RWA by grain cereals and grasses were evaluated by Kindler and Springer (1989). They found jointed goatgrass [Triti-cum cy/indricum (Host) Ces.]…”