Análise da estrutura e diversidade molecular de populações de Spodoptera frugiperda (J.E. Smith) (Lepidoptera: Noctuidae) associadas às culturas de milho e arroz no Rio Grande do Sul

Busato, Gustavo Rossato; Grützmacher, Anderson Dionei; Oliveira, A. C.; Vieira, Eduardo Alano; Zimmer, Paulo Dejalma; Köpp, Maurício Marini; Bandeira, Juliana de Magalhães; Magalhães, Taís

doi:10.1590/s1519-566x2004000600008

Cited by 49 publications

(10 citation statements)

References 18 publications

(21 reference statements)

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“…The sex pheromone of S. frugiperda was identified in 1986 (Tumlinson et al , 1986) and field experiments have been conducted in several regions (Mitchell et al , 1985; Tumlinson et al , 1986; Andrade et al , 2000; Malo et al , 2001; Batista‐Pereira et al , 2006). However, none of these studies mentioned whether corn or rice‐strain females were analysed or whether corn or rice‐strain males were attracted to the different blends, even though both strains have been recognised in North America (Pashley et al , 1985) as well as in Brazil (Busato et al , 2004). One field experiment assessed strain‐specific attraction: Pashley et al (1992) used 1–2 day old live virgin females of each strain as bait in pheromone traps, one female per trap, in fields that contained host plants of both strains in Louisiana in two consecutive years.…”

Section: Behavioural Isolationmentioning

confidence: 99%

“…Sequencing the nuclear ITS1 gene (Prowell, 1998) and an intron at the para sodium channel (Adamczyk et al , 1996) revealed no strain‐specific or strain‐biased variation. Studies using nuclear AFLP markers to identify strain‐specific markers found that only a small fraction of the AFLP loci exhibited diagnostic allelic differences (McMichael & Prowell, 1999; Busato et al , 2004; Prowell et al , 2004). For example, McMichael and Prowell (1999) investigated more than 1000 loci to find 10 strain‐specific AFLP loci; Busato et al (2004) examined more than 200 loci and detected two strain‐specific loci.…”

Section: Genetic Basis Of the Prezygotic Isolation Barriersmentioning

confidence: 99%

“…Originally, a diagnostic esterase allozyme marker and three other significantly strain‐biased protein variants were discovered by an electrophoretic survey of allozyme variation in samples from corn fields and rice paddies (Pashley et al , 1985; Pashley, 1986). Subsequently, several additional strain‐biased or strain‐diagnostic molecular markers have been identified: the two strains differ in several DNA sequence variants in the mitochondrial cytochrome oxidase I and ND1 genes (Pashley, 1989; Pashley & Ke, 1992; Lu & Adang, 1996; Meagher & Gallo‐Meagher, 2003; Nagoshi et al , 2006a), strain‐biased and strain‐specific amplified fragment length polymorphism (AFLP) markers (McMichael & Prowell, 1999; Busato et al , 2004; Prowell et al , 2004), and the FR repetitive nuclear DNA sequence extensively present in the rice strain and mostly absent from the corn strain (Lu et al , 1994; Nagoshi & Meagher, 2003b; Nagoshi et al , 2008). To date, no diagnostic morphological features have been described that distinguish these two strains, but they differ in a number of physiological, developmental, and behavioural features (Pashley, 1988b; Pashley et al , 1992, 1995; Veenstra et al , 1995; Groot et al , 2008; Lima & McNeil, 2009; G. Schöfl, A. Dill, D. G. Heckel, A. T. Groot, unpubl.…”

Section: Introductionmentioning

confidence: 99%

“…Despite these relatively high hybridisation rates in at least some of the areas of occurrence, the two strains have been found throughout South and North America (Meagher & Gallo‐Meagher, 2003; Busato et al , 2004; Prowell et al , 2004; Nagoshi et al , 2007; Machado et al , 2008; Vélez‐Arango et al , 2008) and can be identified using the same strain‐specific mitochondrial markers (Nagoshi et al , 2007). Apparently, there is an array of reproductive isolating barriers active throughout the Western Hemisphere that prevents these strains from merging into one panmictic population.…”

Section: Introductionmentioning

confidence: 99%

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The roles and interactions of reproductive isolation mechanisms in fall armyworm (Lepidoptera: Noctuidae) host strains

Groot

Marr

Heckel

et al. 2010

Ecological Entomology

113

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Abstract. 1. The moth Spodoptera frugiperda presents an interesting opportunity to study the evolution of reproductive isolation, because it consists of two host races that may be in the process of speciation.2. The two races exhibit habitat isolation through host-plant preference, and two types of behavioural isolation, i.e. differences in sex pheromone composition and timing of mating activity at night.3. In this paper, we review the selection pressures acting upon these three barriers as well as their genetic bases, to address the question of how divergence of the two strains may have evolved. 4. We also address possible interactions between the three barriers, whether and how they may have evolved in concert, and we view the evolution of these three prezygotic isolation barriers in the light of postzygotic isolation.

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Section: Behavioural Isolationmentioning

confidence: 99%

Section: Genetic Basis Of the Prezygotic Isolation Barriersmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

The roles and interactions of reproductive isolation mechanisms in fall armyworm (Lepidoptera: Noctuidae) host strains

Groot

Marr

Heckel

et al. 2010

Ecological Entomology

113

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“…Studies of FAW populations have shown that crop‐specific severity of FAW infestations is linked to host‐related strains: the corn strain and rice strain (Pashley et al., 1985; Pashley, 1986; Busato et al., 2004; Meagher & Nagoshi, 2004). The corn strain, for which corn is the preferred host, is the strain that also colonizes cotton fields (Martinelli et al., 2007).…”

Section: Introductionmentioning

confidence: 99%

Development of Spodoptera frugiperda on different hosts and damage to reproductive structures in cotton

Barros

Torres

Ruberson

et al. 2010

Entomologia Exp Applicata

141

105

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The fall armyworm (FAW), Spodoptera frugiperda (J.E. Smith) (Lepidoptera: Noctuidae), is a widespread pest species of various cultivated plants. The pest status of FAW in cotton in the Cerrado region of Brazil has increased with the recent changes in cotton crop systems, such as double cropping and the use of cover or winter crops with non‐tillage cropping systems. In this study we investigated the performance of FAW on three major crops cultivated in the Cerrado – soybean, corn, and cotton – and millet which has been integrated into the landscape as a cover crop. Further, the damage to various reproductive structures of cotton plants by FAW larvae was determined. Both studies were conducted under field conditions. Survival of FAW larvae caged on millet plants was higher than on other hosts. The FAW reared on millet also exhibited a net reproductive rate similar to that observed on corn, which was considered the best host for FAW, and the highest intrinsic rate of increase and lowest mean generation time compared to all other hosts. In cotton, the low availability of bolls during the plant’s blooming stage resulted in higher square feeding, whereas infestation during the plant’s boll stage resulted in higher loss of bolls and lower attack on squares. The number of adults produced in a generation was higher when plants were infested in the boll stage. The results indicated that FAW is a threat to cotton when bolls are available and can cause significant loss of reproductive structures. In addition, based on the FAW performance feeding on millet, this cover crop can be among the reasons of FAW increasing pest status in subsequent crops.

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Transcriptome differential co‐expression reveals distinct molecular response of fall‐armyworm strains to DIMBOA

Silva-Brandão

Murad

Peruchi

et al. 2020

Pest Management Science

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BACKGROUND: 2,4-dihydroxy-7-methoxy-1,4-benzoxazin-3-one (DIMBOA), the main benzoxazinoid found in corn, elicits variable larval responses from different pest moths. For the widespread and highly polyphagous Spodoptera frugiperda (Lepidoptera: Noctuidae), the fall-armyworm (FAW), DIMBOA acts as a feeding stimulant and improves larval growth at low concentrations. The FAW present two host plant-related strains, corn and rice strains, related to host preference on corn and other Graminae or rice. Based on both host preference and strain divergence of the FAW on corn, a cereal containing DIMBOA, and rice, lacking this compound, we question if corn and rice strains larvae respond equally toward DIMBOA. We evaluated differential expression in the transcriptome of both midgut and fat body larval tissues of the two strains reared on either DIMBOAenriched artificial diet or control diet and inferred Bayesian networks. RESULTS: We found differences in performance between corn and rice strain larvae reared on DIMBOA, as well as several differentially regulated contigs annotated as esterases, peptidases, transferases and reductases, all of them known for being related to responses of lepidopterans and other insects to DIMBOA. We also found a UDP-glucuronosyltransferase very similar to others found in many lepidopterans occupying a central hub within a transferase Bayesian network, suggesting that it is essential to an effective response to DIMBOA in FAW. CONCLUSION: Our results suggest that there is an intrinsic cost for FAW rice strain larvae to metabolize corn-originated hydroxamic acids, which could have resulted in the partial host-associated genetic isolation found at FAW field populations.

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Análise da estrutura e diversidade molecular de populações de Spodoptera frugiperda (J.E. Smith) (Lepidoptera: Noctuidae) associadas às culturas de milho e arroz no Rio Grande do Sul

Cited by 49 publications

References 18 publications

The roles and interactions of reproductive isolation mechanisms in fall armyworm (Lepidoptera: Noctuidae) host strains

The roles and interactions of reproductive isolation mechanisms in fall armyworm (Lepidoptera: Noctuidae) host strains

Development of Spodoptera frugiperda on different hosts and damage to reproductive structures in cotton

Transcriptome differential co‐expression reveals distinct molecular response of fall‐armyworm strains to DIMBOA

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