title: Ecological Networks in Stored Grain: Key Postharvest Nodes for Emerging Pests, Pathogens, and Mycotoxins.
abstract: Wheat is at peak quality soon after harvest. Subsequently, diverse biota use wheat as a resource in storage, including insects and mycotoxin-producing fungi. Transportation networks for stored grain are crucial to food security and provide a model system for an analysis of the population structure, evolution, and dispersal of biota in networks. We evaluated the structure of rail networks for grain transport in the United States and Eastern Australia to identify the shortest paths for the anthropogenic dispersal of pests and mycotoxins, as well as the major sources, sinks, and bridges for movement. We found important differences in the risk profile in these two countries and identified priority control points for sampling, detection, and management. An understanding of these key locations and roles within the network is a new type of basic research result in postharvest science and will provide insights for the integrated pest management of high-risk subpopulations, such as pesticide-resistant insect pests.
authors.affiliation: John F. Hernandez Nopsa ( nopsa@ufl.edu ) is a postdoctoral research associate in the Institute for Sustainable Food Systems and the Plant Pathology Department at the University of Florida (UF), in Gainesville, and was formerly a postdoctoral research associate in the Department of Plant Pathology at Kansas State University (KSU), in Manhattan, and affiliated with the Plant Biosecurity Cooperative Research Centre (CRC), in Canberra, Australia. Gregory J. Daglish is a principal research scientist at the Department of Agriculture and Fisheries, in Queensland, and is affiliated with the CRC. David W. Hagstrum is a professor in the Department of Entomology at KSU. John F. Leslie is a university distinguished professor in the Department of Plant Pathology at KSU and is affiliated with the CRC. Thomas W. Phillips is Professor Donald A. Wilbur, Sr. Endowed Professor in Stored-Product Protection in the Department of Entomology at KSU and is affiliated with the CRC. Caterina Scoglio is a professor in the Department of Electrical and Computer Engineering at KSU and is affiliated with the CRC. Sara Thomas-Sharma was a postdoctoral research associate in the Department of Plant Pathology at KSU and is currently in the Department of Plant Pathology at the University of Wisconsin-Madison. Gimme H. Walter is a professor in the School of Biological Sciences at the University of Queensland and is affiliated with the CRC. Karen A. Garrett ( karengarrett@ufl.edu ) is a preeminent professor in the Institute for Sustainable Food Systems and Plant Pathology Department at UF, is affiliated with the CRC, and was formerly a professor in the Department of Plant Pathology at KSU.
authors.forename: John F
authors.initials: JF
authors.lastname: Hernandez Nopsa
authors.affiliation: John F. Hernandez Nopsa ( nopsa@ufl.edu ) is a postdoctoral research associate in the Institute for Sustainable Food Systems and the Plant Pathology Department at the University of Florida (UF), in Gainesville, and was formerly a postdoctoral research associate in the Department of Plant Pathology at Kansas State University (KSU), in Manhattan, and affiliated with the Plant Biosecurity Cooperative Research Centre (CRC), in Canberra, Australia. Gregory J. Daglish is a principal research scientist at the Department of Agriculture and Fisheries, in Queensland, and is affiliated with the CRC. David W. Hagstrum is a professor in the Department of Entomology at KSU. John F. Leslie is a university distinguished professor in the Department of Plant Pathology at KSU and is affiliated with the CRC. Thomas W. Phillips is Professor Donald A. Wilbur, Sr. Endowed Professor in Stored-Product Protection in the Department of Entomology at KSU and is affiliated with the CRC. Caterina Scoglio is a professor in the Department of Electrical and Computer Engineering at KSU and is affiliated with the CRC. Sara Thomas-Sharma was a postdoctoral research associate in the Department of Plant Pathology at KSU and is currently in the Department of Plant Pathology at the University of Wisconsin-Madison. Gimme H. Walter is a professor in the School of Biological Sciences at the University of Queensland and is affiliated with the CRC. Karen A. Garrett ( karengarrett@ufl.edu ) is a preeminent professor in the Institute for Sustainable Food Systems and Plant Pathology Department at UF, is affiliated with the CRC, and was formerly a professor in the Department of Plant Pathology at KSU.
authors.forename: Gregory J
authors.initials: GJ
authors.lastname: Daglish
authors.affiliation: John F. Hernandez Nopsa ( nopsa@ufl.edu ) is a postdoctoral research associate in the Institute for Sustainable Food Systems and the Plant Pathology Department at the University of Florida (UF), in Gainesville, and was formerly a postdoctoral research associate in the Department of Plant Pathology at Kansas State University (KSU), in Manhattan, and affiliated with the Plant Biosecurity Cooperative Research Centre (CRC), in Canberra, Australia. Gregory J. Daglish is a principal research scientist at the Department of Agriculture and Fisheries, in Queensland, and is affiliated with the CRC. David W. Hagstrum is a professor in the Department of Entomology at KSU. John F. Leslie is a university distinguished professor in the Department of Plant Pathology at KSU and is affiliated with the CRC. Thomas W. Phillips is Professor Donald A. Wilbur, Sr. Endowed Professor in Stored-Product Protection in the Department of Entomology at KSU and is affiliated with the CRC. Caterina Scoglio is a professor in the Department of Electrical and Computer Engineering at KSU and is affiliated with the CRC. Sara Thomas-Sharma was a postdoctoral research associate in the Department of Plant Pathology at KSU and is currently in the Department of Plant Pathology at the University of Wisconsin-Madison. Gimme H. Walter is a professor in the School of Biological Sciences at the University of Queensland and is affiliated with the CRC. Karen A. Garrett ( karengarrett@ufl.edu ) is a preeminent professor in the Institute for Sustainable Food Systems and Plant Pathology Department at UF, is affiliated with the CRC, and was formerly a professor in the Department of Plant Pathology at KSU.
authors.forename: David W
authors.initials: DW
authors.lastname: Hagstrum
authors.affiliation: John F. Hernandez Nopsa ( nopsa@ufl.edu ) is a postdoctoral research associate in the Institute for Sustainable Food Systems and the Plant Pathology Department at the University of Florida (UF), in Gainesville, and was formerly a postdoctoral research associate in the Department of Plant Pathology at Kansas State University (KSU), in Manhattan, and affiliated with the Plant Biosecurity Cooperative Research Centre (CRC), in Canberra, Australia. Gregory J. Daglish is a principal research scientist at the Department of Agriculture and Fisheries, in Queensland, and is affiliated with the CRC. David W. Hagstrum is a professor in the Department of Entomology at KSU. John F. Leslie is a university distinguished professor in the Department of Plant Pathology at KSU and is affiliated with the CRC. Thomas W. Phillips is Professor Donald A. Wilbur, Sr. Endowed Professor in Stored-Product Protection in the Department of Entomology at KSU and is affiliated with the CRC. Caterina Scoglio is a professor in the Department of Electrical and Computer Engineering at KSU and is affiliated with the CRC. Sara Thomas-Sharma was a postdoctoral research associate in the Department of Plant Pathology at KSU and is currently in the Department of Plant Pathology at the University of Wisconsin-Madison. Gimme H. Walter is a professor in the School of Biological Sciences at the University of Queensland and is affiliated with the CRC. Karen A. Garrett ( karengarrett@ufl.edu ) is a preeminent professor in the Institute for Sustainable Food Systems and Plant Pathology Department at UF, is affiliated with the CRC, and was formerly a professor in the Department of Plant Pathology at KSU.
authors.forename: John F
authors.initials: JF
authors.lastname: Leslie
authors.affiliation: John F. Hernandez Nopsa ( nopsa@ufl.edu ) is a postdoctoral research associate in the Institute for Sustainable Food Systems and the Plant Pathology Department at the University of Florida (UF), in Gainesville, and was formerly a postdoctoral research associate in the Department of Plant Pathology at Kansas State University (KSU), in Manhattan, and affiliated with the Plant Biosecurity Cooperative Research Centre (CRC), in Canberra, Australia. Gregory J. Daglish is a principal research scientist at the Department of Agriculture and Fisheries, in Queensland, and is affiliated with the CRC. David W. Hagstrum is a professor in the Department of Entomology at KSU. John F. Leslie is a university distinguished professor in the Department of Plant Pathology at KSU and is affiliated with the CRC. Thomas W. Phillips is Professor Donald A. Wilbur, Sr. Endowed Professor in Stored-Product Protection in the Department of Entomology at KSU and is affiliated with the CRC. Caterina Scoglio is a professor in the Department of Electrical and Computer Engineering at KSU and is affiliated with the CRC. Sara Thomas-Sharma was a postdoctoral research associate in the Department of Plant Pathology at KSU and is currently in the Department of Plant Pathology at the University of Wisconsin-Madison. Gimme H. Walter is a professor in the School of Biological Sciences at the University of Queensland and is affiliated with the CRC. Karen A. Garrett ( karengarrett@ufl.edu ) is a preeminent professor in the Institute for Sustainable Food Systems and Plant Pathology Department at UF, is affiliated with the CRC, and was formerly a professor in the Department of Plant Pathology at KSU.
authors.forename: Thomas W
authors.initials: TW
authors.lastname: Phillips
authors.affiliation: John F. Hernandez Nopsa ( nopsa@ufl.edu ) is a postdoctoral research associate in the Institute for Sustainable Food Systems and the Plant Pathology Department at the University of Florida (UF), in Gainesville, and was formerly a postdoctoral research associate in the Department of Plant Pathology at Kansas State University (KSU), in Manhattan, and affiliated with the Plant Biosecurity Cooperative Research Centre (CRC), in Canberra, Australia. Gregory J. Daglish is a principal research scientist at the Department of Agriculture and Fisheries, in Queensland, and is affiliated with the CRC. David W. Hagstrum is a professor in the Department of Entomology at KSU. John F. Leslie is a university distinguished professor in the Department of Plant Pathology at KSU and is affiliated with the CRC. Thomas W. Phillips is Professor Donald A. Wilbur, Sr. Endowed Professor in Stored-Product Protection in the Department of Entomology at KSU and is affiliated with the CRC. Caterina Scoglio is a professor in the Department of Electrical and Computer Engineering at KSU and is affiliated with the CRC. Sara Thomas-Sharma was a postdoctoral research associate in the Department of Plant Pathology at KSU and is currently in the Department of Plant Pathology at the University of Wisconsin-Madison. Gimme H. Walter is a professor in the School of Biological Sciences at the University of Queensland and is affiliated with the CRC. Karen A. Garrett ( karengarrett@ufl.edu ) is a preeminent professor in the Institute for Sustainable Food Systems and Plant Pathology Department at UF, is affiliated with the CRC, and was formerly a professor in the Department of Plant Pathology at KSU.
authors.forename: Caterina
authors.initials: C
authors.lastname: Scoglio
authors.affiliation: John F. Hernandez Nopsa ( nopsa@ufl.edu ) is a postdoctoral research associate in the Institute for Sustainable Food Systems and the Plant Pathology Department at the University of Florida (UF), in Gainesville, and was formerly a postdoctoral research associate in the Department of Plant Pathology at Kansas State University (KSU), in Manhattan, and affiliated with the Plant Biosecurity Cooperative Research Centre (CRC), in Canberra, Australia. Gregory J. Daglish is a principal research scientist at the Department of Agriculture and Fisheries, in Queensland, and is affiliated with the CRC. David W. Hagstrum is a professor in the Department of Entomology at KSU. John F. Leslie is a university distinguished professor in the Department of Plant Pathology at KSU and is affiliated with the CRC. Thomas W. Phillips is Professor Donald A. Wilbur, Sr. Endowed Professor in Stored-Product Protection in the Department of Entomology at KSU and is affiliated with the CRC. Caterina Scoglio is a professor in the Department of Electrical and Computer Engineering at KSU and is affiliated with the CRC. Sara Thomas-Sharma was a postdoctoral research associate in the Department of Plant Pathology at KSU and is currently in the Department of Plant Pathology at the University of Wisconsin-Madison. Gimme H. Walter is a professor in the School of Biological Sciences at the University of Queensland and is affiliated with the CRC. Karen A. Garrett ( karengarrett@ufl.edu ) is a preeminent professor in the Institute for Sustainable Food Systems and Plant Pathology Department at UF, is affiliated with the CRC, and was formerly a professor in the Department of Plant Pathology at KSU.
authors.forename: Sara
authors.initials: S
authors.lastname: Thomas-Sharma
authors.affiliation: John F. Hernandez Nopsa ( nopsa@ufl.edu ) is a postdoctoral research associate in the Institute for Sustainable Food Systems and the Plant Pathology Department at the University of Florida (UF), in Gainesville, and was formerly a postdoctoral research associate in the Department of Plant Pathology at Kansas State University (KSU), in Manhattan, and affiliated with the Plant Biosecurity Cooperative Research Centre (CRC), in Canberra, Australia. Gregory J. Daglish is a principal research scientist at the Department of Agriculture and Fisheries, in Queensland, and is affiliated with the CRC. David W. Hagstrum is a professor in the Department of Entomology at KSU. John F. Leslie is a university distinguished professor in the Department of Plant Pathology at KSU and is affiliated with the CRC. Thomas W. Phillips is Professor Donald A. Wilbur, Sr. Endowed Professor in Stored-Product Protection in the Department of Entomology at KSU and is affiliated with the CRC. Caterina Scoglio is a professor in the Department of Electrical and Computer Engineering at KSU and is affiliated with the CRC. Sara Thomas-Sharma was a postdoctoral research associate in the Department of Plant Pathology at KSU and is currently in the Department of Plant Pathology at the University of Wisconsin-Madison. Gimme H. Walter is a professor in the School of Biological Sciences at the University of Queensland and is affiliated with the CRC. Karen A. Garrett ( karengarrett@ufl.edu ) is a preeminent professor in the Institute for Sustainable Food Systems and Plant Pathology Department at UF, is affiliated with the CRC, and was formerly a professor in the Department of Plant Pathology at KSU.
authors.forename: Gimme H
authors.initials: GH
authors.lastname: Walter
authors.affiliation: John F. Hernandez Nopsa ( nopsa@ufl.edu ) is a postdoctoral research associate in the Institute for Sustainable Food Systems and the Plant Pathology Department at the University of Florida (UF), in Gainesville, and was formerly a postdoctoral research associate in the Department of Plant Pathology at Kansas State University (KSU), in Manhattan, and affiliated with the Plant Biosecurity Cooperative Research Centre (CRC), in Canberra, Australia. Gregory J. Daglish is a principal research scientist at the Department of Agriculture and Fisheries, in Queensland, and is affiliated with the CRC. David W. Hagstrum is a professor in the Department of Entomology at KSU. John F. Leslie is a university distinguished professor in the Department of Plant Pathology at KSU and is affiliated with the CRC. Thomas W. Phillips is Professor Donald A. Wilbur, Sr. Endowed Professor in Stored-Product Protection in the Department of Entomology at KSU and is affiliated with the CRC. Caterina Scoglio is a professor in the Department of Electrical and Computer Engineering at KSU and is affiliated with the CRC. Sara Thomas-Sharma was a postdoctoral research associate in the Department of Plant Pathology at KSU and is currently in the Department of Plant Pathology at the University of Wisconsin-Madison. Gimme H. Walter is a professor in the School of Biological Sciences at the University of Queensland and is affiliated with the CRC. Karen A. Garrett ( karengarrett@ufl.edu ) is a preeminent professor in the Institute for Sustainable Food Systems and Plant Pathology Department at UF, is affiliated with the CRC, and was formerly a professor in the Department of Plant Pathology at KSU.
authors.forename: Karen A
authors.initials: KA
authors.lastname: Garrett
keywords: insect pests; mycotoxins; postharvest networks; stored grain; wheat transportation