SAES-422 Multistate Research Activity Accomplishments Report
Sections
Status: Approved
Basic Information
- Project No. and Title: WERA_OLD66 : Integrated Management of Russian Wheat Aphid and Other Cereal Aphids
- Period Covered: 09/01/2002 to 09/01/2003
- Date of Report: 09/15/2003
- Annual Meeting Dates: 09/09/2002 to 09/10/2002
Participants
Participants: Nilsa Bosque-Perez, Chair (absent) Sue Blodgett, Secretary Gerald Wilde, KSU John Burd, USDA,ARS, Frank Peairs, CSU Tom Holzer, CSU Gary Hein, UNL Kevin Shufran, USDA,ARS,PSWCRL Dave Foster, USDA,ARS,PSWCRL Louis Hesler, USDA,ARS, NGIRL John Reese, KSU Gerry Michels, Texas A&M Roxanne Shufran, Norm Elliott, USDA,ARS,PSWCRL JP Michaud, KSU Keith Pike, WSU Debi Owing Phil Sloderbeck, KSU Gerrit Cuperus, OSU Do Mornhinweg, USDA,ARS,PSWCRL C. Mike Smith, KSU Mark Lazer Dave Porter, USDA,ARS,PSWCRL Cheryl Baker, USDA, ARS, PSWCRL Bonnie Pendelton
Tom Holtzer called the meeting to order and welcomed attendees
Blodgett assumed the responsibilities of the Chair, as Nilsa Bosque-Perez was unable to attend.
Discussion of standardization needs for maintaining colonies of different aphid biotypes for host-plant testing and other research needs.
Presentation by Kris Giles and Tom Royer of the aphid sequential sampling program developed and implemented in Oklahoma. Score Sheets were distributed and are being used by County Extension faculty and consultants to track infestations.
Discussion of soybean aphid, current distribution needs for research including development of thresholds, host range and biological control. Coordination of efforts was mentioned as this pest emerges.
Final Business Meeting
Meeting date set for Sept 29-30th for next meeting to be held in Fort Collins. Discussion of other sites, but Fort Collins was agreed upon because it is centrally located and therefore more economical for travel.
Louis Hesler was nominated and elected unanimously as the Secretary-elect.
New Business:
It was suggested that we offer a training/workshop session in conjunction with WCC66 meetings. Two suggestions were offered for the 2003 meeting. Keith Pike offered to provide training on aphidids including specimen preparation. Jerry Michels offered to provide training on coccinellids. If this training was offered on Sunday classrooms/labs equipped with microscopes would be available at CSU.
Meeting was adjorned at 11:45am
Blodgett assumed the responsibilities of the Chair, as Nilsa Bosque-Perez was unable to attend.
Discussion of standardization needs for maintaining colonies of different aphid biotypes for host-plant testing and other research needs.
Presentation by Kris Giles and Tom Royer of the aphid sequential sampling program developed and implemented in Oklahoma. Score Sheets were distributed and are being used by County Extension faculty and consultants to track infestations.
Discussion of soybean aphid, current distribution needs for research including development of thresholds, host range and biological control. Coordination of efforts was mentioned as this pest emerges.
Final Business Meeting
Meeting date set for Sept 29-30th for next meeting to be held in Fort Collins. Discussion of other sites, but Fort Collins was agreed upon because it is centrally located and therefore more economical for travel.
Louis Hesler was nominated and elected unanimously as the Secretary-elect.
New Business:
It was suggested that we offer a training/workshop session in conjunction with WCC66 meetings. Two suggestions were offered for the 2003 meeting. Keith Pike offered to provide training on aphidids including specimen preparation. Jerry Michels offered to provide training on coccinellids. If this training was offered on Sunday classrooms/labs equipped with microscopes would be available at CSU.
Meeting was adjorned at 11:45am
Accomplishments
Subcommittee Minutes:
Biocontrol subcommittee, 09-Sep-2002
Summary by Kevin A. Shufran
Lysiphlebus testaceipes is the driving force of greenbug population dynamics. - Kris Giles.
Whether true or not, this statement testifies to the importance of this Aphidiidae species in cereal aphid biological control. Lysiphlebus testaceipes was a major topic of discussion of the group.
Important research questions and/or areas warranting research identified by the group.
1. Understand how to augment parasitoid (esp. Lysiphlebus testaceipes) populations in fall wheat to give consistent control of Schizaphis graminum.
2. Understand the ecological biology of L. testaceipes.
3. Determine if, and to what extent, L. testaceipes is a species complex.
4. Understand the nutritional ecology of parasitized aphids in terms of affecting coccinellid predators that feed upon them. Is there an antagonism by parasitized aphids on predators, which consume them?
5. Assess and describe the aphid parasitoid guild in wheat/small grains at present date. Especially in light of releases for Diuraphis noxia, and on a regional basis.
6. Evaluate parasitoid releases made for D. noxia, not only in targeted pest/crops, but also in other systems and aphid species. For example Aphidius matricariae has proven ineffective for D. noxia, but now readily attacks Myzus persicae.
7. Virtually nothing is known about predatory Diptera and their impact on cereal aphids in North America.
8. Identifying non-pest aphids which are hosts to parasitoids attacking cereal aphids, and using these as bridges or reservoirs to augment parasitoid populations in wheat.
9. Determine the spatial dynamics of parasitoids.
Panel Members:
Kevin Shufran
Gerry Wilde
Norm Elliott
JP Michaud
Keith Pike
Kris Giles
Debi Owing
Jerry Michels
Aphid-Plant Interaction and Ecology Subcommittee, 09-Sep-2002
Summary by Roxanne Shufran
The discussion centered around the current problems with establishing criteria for biotypes and standardized procedures for biotyping. Colonies of Greenbug biotypes H and J have been lost. There is a need by members of this working group for a biotyping service.
Standardized procedures would include plant differentials and established protocols for checking biotypes of unknown, submitted aphids and maintaining colonies of biotypes that would be periodically tested.
The Aphid-Plant Interaction and Ecology Subcommittee will be putting together a one page proposal that will include:
Biotyping service
Maintenance of biotype cultures
Research component for biotypes.
Other news:
First report of a RWA biotype came from Beatrice, Nebraska
Soybean aphid findings include Kansas, North Dakota, Nebraska
Reports on Bird cherry-oat aphid activity.
Attending:
Louis Hesler
John Burd
Gerrit Cuperus
Do Mornhinweg
Mike Smith
Mark Lazer
Dave Porter
Frank Peairs
Sue Blodgett
Phil Sloderbeck
John Reese
Cheryl Baker
Roxanne Shufran
Bonnie Pendelton
Biocontrol subcommittee, 09-Sep-2002
Summary by Kevin A. Shufran
Lysiphlebus testaceipes is the driving force of greenbug population dynamics. - Kris Giles.
Whether true or not, this statement testifies to the importance of this Aphidiidae species in cereal aphid biological control. Lysiphlebus testaceipes was a major topic of discussion of the group.
Important research questions and/or areas warranting research identified by the group.
1. Understand how to augment parasitoid (esp. Lysiphlebus testaceipes) populations in fall wheat to give consistent control of Schizaphis graminum.
2. Understand the ecological biology of L. testaceipes.
3. Determine if, and to what extent, L. testaceipes is a species complex.
4. Understand the nutritional ecology of parasitized aphids in terms of affecting coccinellid predators that feed upon them. Is there an antagonism by parasitized aphids on predators, which consume them?
5. Assess and describe the aphid parasitoid guild in wheat/small grains at present date. Especially in light of releases for Diuraphis noxia, and on a regional basis.
6. Evaluate parasitoid releases made for D. noxia, not only in targeted pest/crops, but also in other systems and aphid species. For example Aphidius matricariae has proven ineffective for D. noxia, but now readily attacks Myzus persicae.
7. Virtually nothing is known about predatory Diptera and their impact on cereal aphids in North America.
8. Identifying non-pest aphids which are hosts to parasitoids attacking cereal aphids, and using these as bridges or reservoirs to augment parasitoid populations in wheat.
9. Determine the spatial dynamics of parasitoids.
Panel Members:
Kevin Shufran
Gerry Wilde
Norm Elliott
JP Michaud
Keith Pike
Kris Giles
Debi Owing
Jerry Michels
Aphid-Plant Interaction and Ecology Subcommittee, 09-Sep-2002
Summary by Roxanne Shufran
The discussion centered around the current problems with establishing criteria for biotypes and standardized procedures for biotyping. Colonies of Greenbug biotypes H and J have been lost. There is a need by members of this working group for a biotyping service.
Standardized procedures would include plant differentials and established protocols for checking biotypes of unknown, submitted aphids and maintaining colonies of biotypes that would be periodically tested.
The Aphid-Plant Interaction and Ecology Subcommittee will be putting together a one page proposal that will include:
Biotyping service
Maintenance of biotype cultures
Research component for biotypes.
Other news:
First report of a RWA biotype came from Beatrice, Nebraska
Soybean aphid findings include Kansas, North Dakota, Nebraska
Reports on Bird cherry-oat aphid activity.
Attending:
Louis Hesler
John Burd
Gerrit Cuperus
Do Mornhinweg
Mike Smith
Mark Lazer
Dave Porter
Frank Peairs
Sue Blodgett
Phil Sloderbeck
John Reese
Cheryl Baker
Roxanne Shufran
Bonnie Pendelton