Identification and Comparison of Fall Armyworm (Lepidoptera: Noctuidae) Host Strains in Brazil, Texas, and Florida

By R. Nagoshi, P. Silvie, R. Meagher, Juan D. López, V. Machado. 2007

125 citations recorded by the source corpus.

Abstract Fall armyworm, Spodoptera frugiperda (J.E. Smith) (Lepidoptera: Noctuidae), is a major economic pest throughout the Western Hemisphere. Studies of populations in the southern United States and the Caribbean demonstrated the existence of two morphologically identical but genetically distinct host strains. These races can be distinguished by using polymorphisms in the mitochondrial cytochrome oxidase I gene that define two distinct maternal lineages that correlate with strain-specific behaviors in Florida populations. Although there is evidence of different biotypes in Brazil, it has not been demonstrated that these biotypes are equivalent to the U.S. strains. Sampling from Brazil indicates that its fall armyworm populations consist of the two strain-specific haplotypes found in Florida and also display the expected biases in plant host distribution. The same genetic markers also were present in samples from Texas, a major source of migrating fall armyworm in North America. These results indicate that the biology and behaviors of Brazilian fall armyworm populations are similar to those found in North America.

Subfields: Health, Toxicology and Mutagenesis, Insect Science, Molecular Biology

View Paper: https://www.semanticscholar.org/paper/085c0240b47eb865d5fe76d53e84e555bf28d9d3

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Health, Toxicology and Mutagenesis

1. R. Nagoshi

In Insect Science

1. A. Groot
2. David G. Heckel
3. M. Marr
4. Gerhard Schöfl
5. R. Nagoshi

In Molecular Biology

1. David G. Heckel
2. M. Marr
3. Gerhard Schöfl
4. A. Groot
5. R. Nagoshi

Citations in the corpus

• The roles and interactions of reproductive isolation mechanisms in fall armyworm (Lepidoptera: Noctuidae) host strains (2010, background): “Surprisingly, in samples from Florida, Texas, and Brazil, substantial proportions of mtRFR0 genotypes were discovered, which can only be accounted for by RC hybrid females backcrossing to corn males.”
• The Fall Armyworm Triose Phosphate Isomerase (Tpi) Gene as a Marker of Strain Identity and Interstrain Mating (2010, methodology): “…MS Larva Corn 2004Ð2006 Nagoshi et al. (2008c) Washington Co., MS Pheromone Corn, cotton 2004Ð2006 Nagoshi et al. (2008c) Parana, Brazil Larva Corn 2005 Nagoshi et al. (2007a) Mato Grosso, Brazil Larva Pasture, corn, millet 2005 Nagoshi et al. (2007a) resolve the FR pattern (Nagoshi et al. 2008).”