title: Spatial distribution of Aphis glycines (Hemiptera: Aphididae): a summary of the suction trap network.
abstract: The soybean aphid, Aphis glycines Matsumura (Hemiptera: Aphididae), is an economically important pest of soybean, Glycine max (L.) Merrill, in the United States. Phenological information of A. glycines is limited; specifically, little is known about factors guiding migrating aphids and potential impacts of long distance flights on local population dynamics. Increasing our understanding of A. glycines population dynamics may improve predictions of A. glycines outbreaks and improve management efforts. In 2005 a suction trap network was established in seven Midwest states to monitor the occurrence of alates. By 2006, this network expanded to 10 states and consisted of 42 traps. The goal of the STN was to monitor movement of A. glycines from their overwintering host Rhamnus spp. to soybean in spring, movement among soybean fields during summer, and emigration from soybean to Rhamnus in fall. The objective of this study was to infer movement patterns of A. glycines on a regional scale based on trap captures, and determine the suitability of certain statistical methods for future analyses. Overall, alates were not commonly collected in suction traps until June. The most alates were collected during a 3-wk period in the summer (late July to mid-August), followed by the fall, with a peak capture period during the last 2 wk of September. Alate captures were positively correlated with latitude, a pattern consistent with the distribution of Rhamnus in the United States, suggesting that more southern regions are infested by immigrants from the north.
authors.affiliation: Department of Entomology, Iowa State University, Ames, IA 50011, USA.
authors.forename: Nicholas P
authors.initials: NP
authors.lastname: Schmidt
authors.forename: Matthew E
authors.initials: ME
authors.lastname: O'Neal
authors.forename: Paul F
authors.initials: PF
authors.lastname: Anderson
authors.forename: Doris
authors.initials: D
authors.lastname: Lagos
authors.forename: David
authors.initials: D
authors.lastname: Voegtlin
authors.forename: Wayne
authors.initials: W
authors.lastname: Bailey
authors.forename: Petrutza
authors.initials: P
authors.lastname: Caragea
authors.forename: Eileen
authors.initials: E
authors.lastname: Cullen
authors.forename: Christina
authors.initials: C
authors.lastname: DiFonzo
authors.forename: Kate
authors.initials: K
authors.lastname: Elliott
authors.forename: Claudio
authors.initials: C
authors.lastname: Gratton
authors.forename: Douglas
authors.initials: D
authors.lastname: Johnson
authors.forename: Christian H
authors.initials: CH
authors.lastname: Krupke
authors.forename: Brian
authors.initials: B
authors.lastname: McCornack
authors.forename: Robert
authors.initials: R
authors.lastname: O'Neil
authors.forename: David W
authors.initials: DW
authors.lastname: Ragsdale
authors.forename: Kelley J
authors.initials: KJ
authors.lastname: Tilmon
authors.forename: Jeff
authors.initials: J
authors.lastname: Whitworth
mesh_terms: D025041:Animal Migration; D000818:Animals; D001042:Aphids / Q000502:physiology*; D005260:Female; D007300:Insect Control / Q000295:instrumentation* / Q000379:methods; D008297:Male; D011157:Population Dynamics; D031955:Rhamnus; D012621:Seasons; D013025:Glycine max; D014481:United States