Host association of spodoptera frugiperda (Lepidoptera: Noctuidae) corn and rice strains in Argentina, Brazil, and Paraguay
Spodoptera frugiperda (J.E. Smith) is composed of two genetically distinct strains, the so-called corn strain and the rice strain. Whether the two strains differ in their host use is unclear, because laboratory experiments have not been able to show consistent host performance or preference differen...
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todo:paper_00220493_v105_n2_p573_LauraJuarez2023-10-03T14:25:40Z Host association of spodoptera frugiperda (Lepidoptera: Noctuidae) corn and rice strains in Argentina, Brazil, and Paraguay Laura Juárez, M. Gabriela Murúa, M. Gabriela García, M. Ontivero, M. Teresa Vera, M. Vilardi, J.C. Groot, A.T. Castagnaro, A.P. Gastaminza, G. Willink, E. cytochrome oxidase I fall armyworm host race PCR-restriction fragment-length polymorphism South America cytochrome c oxidase insect protein mitochondrial DNA alfalfa animal Argentina armyworm article Brazil classification DNA sequence feeding behavior genetic polymorphism genetics haplotype larva Paraguay Poaceae polymerase chain reaction restriction fragment length polymorphism Animals Argentina Brazil DNA, Mitochondrial Electron Transport Complex IV Feeding Behavior Haplotypes Insect Proteins Larva Medicago sativa Paraguay Poaceae Polymerase Chain Reaction Polymorphism, Genetic Polymorphism, Restriction Fragment Length Sequence Analysis, DNA Spodoptera Lepidoptera Medicago sativa Noctuidae Poaceae Spodoptera frugiperda Zea mays Spodoptera frugiperda (J.E. Smith) is composed of two genetically distinct strains, the so-called corn strain and the rice strain. Whether the two strains differ in their host use is unclear, because laboratory experiments have not been able to show consistent host performance or preference differences between them, and field studies showed high rates of hybridization, as well as some degree asymmetric host use. To determine the distribution of the two strains and their association with host plants, we collected fall armyworm larvae from different crops (corn, rice, alfalfa, and sorghum) and grasses in 15 different localities over 4 yr in Argentina, Brazil, and Paraguay. The strain identity was analyzed using two polymorphisms in the mitochondrial cytochrome oxidase subunit I gene. We identified the corn and rice haplotypes and three types of populations were characterized based on the frequencies of the individuals that belonged to any of these haplotypes: in 44% of populations the corn haplotype predominated, in 44% of populations the rice haplotype was the most frequent, and 11% of populations showed both haplotypes at similar proportions. In total, eight populations (47%) showed the expected pattern, two populations (12%) were polymorphic within the same field, and seven populations (41%) showed the inverse pattern. Taken together, there was no consistent pattern of host association between the two sympatric genotypes and their respective host plants. This investigation supports the need for additional studies to determine which other forces keep the genotypes separate, and what is the degree of genetic differentiation between these populations. © 2012 Entomological Society of America. Fil:Teresa Vera, M. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Vilardi, J.C. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_00220493_v105_n2_p573_LauraJuarez |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
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Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
cytochrome oxidase I fall armyworm host race PCR-restriction fragment-length polymorphism South America cytochrome c oxidase insect protein mitochondrial DNA alfalfa animal Argentina armyworm article Brazil classification DNA sequence feeding behavior genetic polymorphism genetics haplotype larva Paraguay Poaceae polymerase chain reaction restriction fragment length polymorphism Animals Argentina Brazil DNA, Mitochondrial Electron Transport Complex IV Feeding Behavior Haplotypes Insect Proteins Larva Medicago sativa Paraguay Poaceae Polymerase Chain Reaction Polymorphism, Genetic Polymorphism, Restriction Fragment Length Sequence Analysis, DNA Spodoptera Lepidoptera Medicago sativa Noctuidae Poaceae Spodoptera frugiperda Zea mays |
| spellingShingle |
cytochrome oxidase I fall armyworm host race PCR-restriction fragment-length polymorphism South America cytochrome c oxidase insect protein mitochondrial DNA alfalfa animal Argentina armyworm article Brazil classification DNA sequence feeding behavior genetic polymorphism genetics haplotype larva Paraguay Poaceae polymerase chain reaction restriction fragment length polymorphism Animals Argentina Brazil DNA, Mitochondrial Electron Transport Complex IV Feeding Behavior Haplotypes Insect Proteins Larva Medicago sativa Paraguay Poaceae Polymerase Chain Reaction Polymorphism, Genetic Polymorphism, Restriction Fragment Length Sequence Analysis, DNA Spodoptera Lepidoptera Medicago sativa Noctuidae Poaceae Spodoptera frugiperda Zea mays Laura Juárez, M. Gabriela Murúa, M. Gabriela García, M. Ontivero, M. Teresa Vera, M. Vilardi, J.C. Groot, A.T. Castagnaro, A.P. Gastaminza, G. Willink, E. Host association of spodoptera frugiperda (Lepidoptera: Noctuidae) corn and rice strains in Argentina, Brazil, and Paraguay |
| topic_facet |
cytochrome oxidase I fall armyworm host race PCR-restriction fragment-length polymorphism South America cytochrome c oxidase insect protein mitochondrial DNA alfalfa animal Argentina armyworm article Brazil classification DNA sequence feeding behavior genetic polymorphism genetics haplotype larva Paraguay Poaceae polymerase chain reaction restriction fragment length polymorphism Animals Argentina Brazil DNA, Mitochondrial Electron Transport Complex IV Feeding Behavior Haplotypes Insect Proteins Larva Medicago sativa Paraguay Poaceae Polymerase Chain Reaction Polymorphism, Genetic Polymorphism, Restriction Fragment Length Sequence Analysis, DNA Spodoptera Lepidoptera Medicago sativa Noctuidae Poaceae Spodoptera frugiperda Zea mays |
| description |
Spodoptera frugiperda (J.E. Smith) is composed of two genetically distinct strains, the so-called corn strain and the rice strain. Whether the two strains differ in their host use is unclear, because laboratory experiments have not been able to show consistent host performance or preference differences between them, and field studies showed high rates of hybridization, as well as some degree asymmetric host use. To determine the distribution of the two strains and their association with host plants, we collected fall armyworm larvae from different crops (corn, rice, alfalfa, and sorghum) and grasses in 15 different localities over 4 yr in Argentina, Brazil, and Paraguay. The strain identity was analyzed using two polymorphisms in the mitochondrial cytochrome oxidase subunit I gene. We identified the corn and rice haplotypes and three types of populations were characterized based on the frequencies of the individuals that belonged to any of these haplotypes: in 44% of populations the corn haplotype predominated, in 44% of populations the rice haplotype was the most frequent, and 11% of populations showed both haplotypes at similar proportions. In total, eight populations (47%) showed the expected pattern, two populations (12%) were polymorphic within the same field, and seven populations (41%) showed the inverse pattern. Taken together, there was no consistent pattern of host association between the two sympatric genotypes and their respective host plants. This investigation supports the need for additional studies to determine which other forces keep the genotypes separate, and what is the degree of genetic differentiation between these populations. © 2012 Entomological Society of America. |
| format |
JOUR |
| author |
Laura Juárez, M. Gabriela Murúa, M. Gabriela García, M. Ontivero, M. Teresa Vera, M. Vilardi, J.C. Groot, A.T. Castagnaro, A.P. Gastaminza, G. Willink, E. |
| author_facet |
Laura Juárez, M. Gabriela Murúa, M. Gabriela García, M. Ontivero, M. Teresa Vera, M. Vilardi, J.C. Groot, A.T. Castagnaro, A.P. Gastaminza, G. Willink, E. |
| author_sort |
Laura Juárez, M. |
| title |
Host association of spodoptera frugiperda (Lepidoptera: Noctuidae) corn and rice strains in Argentina, Brazil, and Paraguay |
| title_short |
Host association of spodoptera frugiperda (Lepidoptera: Noctuidae) corn and rice strains in Argentina, Brazil, and Paraguay |
| title_full |
Host association of spodoptera frugiperda (Lepidoptera: Noctuidae) corn and rice strains in Argentina, Brazil, and Paraguay |
| title_fullStr |
Host association of spodoptera frugiperda (Lepidoptera: Noctuidae) corn and rice strains in Argentina, Brazil, and Paraguay |
| title_full_unstemmed |
Host association of spodoptera frugiperda (Lepidoptera: Noctuidae) corn and rice strains in Argentina, Brazil, and Paraguay |
| title_sort |
host association of spodoptera frugiperda (lepidoptera: noctuidae) corn and rice strains in argentina, brazil, and paraguay |
| url |
http://hdl.handle.net/20.500.12110/paper_00220493_v105_n2_p573_LauraJuarez |
| work_keys_str_mv |
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1782030511130017792 |