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W.T. Tay

Publications of : W.T. Tay
Plant Genetics   Research Article

First record of soybean stem fly Melanagromyza sojae (Diptera: Agromyzidae) in Paraguay confirmed by molecular evidence

We provided the first scientific record of Melanagromyza sojae (Zehntner, 1900), through molecular characterization of partial mtDNA COI gene, that confirms the occurrence of this pest in Paraguay. Previously reported in Brazil, an outbreak of larvae of M. sojae known as the soybean stem fly (SSF) that belongs to the family Agromyzidae, was also noted in soybean fie.. Read More»

Genet. Mol. Res. 16(3): gmr16039707

DOI: 10.4238/gmr16039707

Plant Genetics   Research Article

Soybean Stem Fly, Melanagromyza sojae (Diptera: Agromyzidae), in the New World: detection of high genetic diversity from soybean fields in Brazil

    J.A. Arnemann, W.T. Tay, T.K. Walsh H. Brier, K. Gordon,F. Hickmann, G. Ugalde and J.V.C. Guedes

Soybean Stem Fly (SSF), Melanagromyza sojae (Zehntner), belongs to the family Agromyzidae and is highly polyphagous, attacking many plant species of the family Fabaceae, including soybean and other beans. SSF is regarded as one of the most important pests in soybean fields of Asia (e.g., China, India), North East Africa (e.g., Egypt), parts of Russia, and South East.. Read More»

Genet. Mol. Res. 15(2): gmr.15028610

DOI: 10.4238/gmr.15028610

Human Genetics   Research Article

Mitochondrial DNA COI characterization of Helicoverpa armigera (Lepidoptera: Noctuidae) from Paraguay and Uruguay

    J.A. Arnemann, W.J. James, T.K. Walsh, J.V.C. Guedes, G. Smagghe, E. Castiglioni and W.T. Tay

Since its detection in Brazil in 2013, the Old World cotton bollworm Helicoverpa armigera has been reported in Argentina, Paraguay, and Bolivia. Here we present evidence extending the South American range of H. armigera to Uruguay, using polymerase chain reaction and sequencing of the partial mitochondrial DNA (mtDNA) cytochrome oxidase I region. Molecular character.. Read More»

Genet. Mol. Res. 15(2): gmr.15028292

DOI: 10.4238/gmr.15028292