Monitoring and First Discovery of the Mexican Rice Borer<i>Eoreuma loftini</i>(Lepidoptera: Crambidae) in Louisiana

Hummel, Natalie A.; Hardy, Tad N.; Reagan, T. E.; Pollet, D. K.; Carlton, Christopher E.; Stout, Michael J.; Beuzelin, J. M.; Akbar, Waseem; White, W. H.

doi:10.1653/024.093.0118

Cited by 36 publications

(31 citation statements)

References 7 publications

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“…Therefore, pheromone trap assisted scouting could potentially be further developed for use on a broad commercial scale to increase monitoring efÞciency in Texas and Louisiana. LouisianaÕs sugarcane industry is heavily dependent on consultant scouting for D. saccharalis infestations, and the infrastructure is in place to use pheromone trap assisted scouting when E. loftini becomes established as a major economic pest in Louisiana sugarcane (ReayÐJones et al 2008, Hummel et al 2010.…”

Section: Discussionmentioning

confidence: 99%

“…Now the pest comprises Ͼ95% of the sugarcane, Saccharum spp., stalkborer population there (Legaspi et al 1997) and causes Ͼ$10 million in annual revenue losses (Legaspi et al 1999). The insect has expanded into the rice (Oryza sativa L.), production area of east Texas (Browning et al 1989, ReayÐJones et al 2007a, and, recently, Louisiana (Hummel et al 2010). By 2035, E. loftini is predicted to infest all of LouisianaÕs sugarcane areas with projected annual losses of $220 million in sugarcane and $48 million in rice (ReayÐ Jones et al 2008).…”

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confidence: 99%

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Improved Chemical Control for the Mexican Rice Borer (Lepidoptera: Crambidae) in Sugarcane: Larval Exposure, a Novel Scouting Method, and Efficacy of a Single Aerial Insecticide Application

Wilson¹,

Showler

Reagan³

et al. 2012

jnl. econ. entom.

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A three-treatment aerial application insecticide experiment was conducted in five commercial sugarcane, Saccharum spp., fields in south Texas to evaluate the use of pheromone traps for improving chemical control of the Mexican rice borer, Eoreuma loftini (Dyar), in 2009 and 2010. A threshold of 20 moths/trap/wk was used to initiate monitoring for larval infestations. The percentage of stalks with larvae on plant surfaces was directly related to the number of moths trapped. Reductions in borer injury and adult emergence were detected when a threshold of >5% of stalks with larvae present on plant surfaces was used to trigger insecticide applications. Novaluron provided superior control compared with beta-cyfluthrin; novaluron treated plots were associated with a 14% increase in sugar production. A greenhouse experiment investigating establishment and behavior of E. loftini larvae on two phenological stages of stalkborer resistant, HoCP 85-845, and susceptible, HoCP 00-950, sugarcane cultivars determined that more than half of larvae on HoCP 00-950 and > 25% on HoCP 85-845 tunneled inside leaf mid-ribs within 1 d of eclosion, protected therein from biological and chemical control tactics. Exposure time of larvae averaged < 1 wk for all treatments and was shortest on immature HoCP 00-950 and longest on mature HoCP 85-845. This study shows a short window of vulnerability of E. loftini larvae to insecticide applications, and demonstrates the potential utility of pheromone traps for improving insecticide intervention timing such that a single properly timed application may be all that is required.

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Section: Discussionmentioning

confidence: 99%

mentioning

confidence: 99%

Improved Chemical Control for the Mexican Rice Borer (Lepidoptera: Crambidae) in Sugarcane: Larval Exposure, a Novel Scouting Method, and Efficacy of a Single Aerial Insecticide Application

Wilson¹,

Showler

Reagan³

et al. 2012

jnl. econ. entom.

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“…In addition to D. saccharalis, another stem borer, Chilo plejadellus Zincken, is also an occasional pest of rice in the southern United States (Oliver et al 1972). Moreover, another stem-boring species, the Mexican rice borer, Eoreuma loftini Dyar, has recently invaded Louisiana from eastern Texas (Hummel et al 2010) and has the potential to cause signiÞcant economic damage (Reay-Jones et al 2008) if it becomes established in areas where rice and sugarcane are grown in Louisiana.…”

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confidence: 99%

Oviposition Behavior ofDiatraea saccharalis(Lepidoptera: Crambidae) on Different Rice Cultivars in Louisiana

et al. 2012

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The sugarcane borer, Diatraea saccharalis (F.), is a pest of a variety of graminaceous crops in the southern United States, including sugarcane, maize, and rice in Louisiana. This study examined several aspects of D. saccharalis oviposition behavior on rice (Oryza sativa). The vertical distribution of egg masses on four phenological stages of rice in the field showed that D. saccharalis prefers to oviposit on the uppermost portions of rice plants, regardless of plant stage. In greenhouse choice experiments, females strongly preferred plants at the boot and panicle differentiation stages over plants at the tillering stage for oviposition. Greenhouse studies were also conducted to quantify the oviposition preference of D. saccharalis for different cultivars of. When plants were at the tillering stage, cultivars Cocodrie, Priscilla, Bengal, Cheniere, and CL161 were more preferred than cultivars Jupiter, XL723, and XP744. When plants reached the panicle initiation stage, cultivars Cocodrie, CL161, and Priscilla were more preferred than Bengal, Cheniere, Jupiter, XL723, and XP744. Females also oviposited significantly more egg masses on the adaxial surfaces of rice leaves than on the abaxial surfaces. These results will facilitate scouting and management of sugarcane borer and can be used as a foundation for the development of sugarcane borer resistant cultivars.

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“…Although D. saccharalis has been established in the southeastern United States since the 1850s (Stubbs and Morgan 1902), E. loftini has expanded its range in a northeasterly direction since its Þrst detection in south Texas in 1980(Reay-Jones et al 2007). E. loftini was reported in 2008 for the Þrst time in Louisiana (Hummel et al 2010), where annual economic losses in sugarcane and rice may become as severe as $250 million within the next decades (Reay- Jones et al 2008).…”

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confidence: 99%

Seasonal Infestations of Two Stem Borers (Lepidoptera: Crambidae) in Noncrop Grasses of Gulf Coast Rice Agroecosystems

et al. 2011

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Infestations of two stem borers, Eoreuma loftini (Dyar) and Diatraea saccharalis (F.) (Lepidoptera: Crambidae), were compared in noncrop grasses adjacent to rice (Oryza sativa L.) fields. Three farms in the Texas rice Gulf Coast production area were surveyed every 6-8 wk between 2007 and 2009 using quadrat sampling along transects. Although D. saccharalis densities were relatively low, E. loftini average densities ranged from 0.3 to 5.7 immatures per m(2) throughout the 2-yr period. Early annual grasses including ryegrass, Lolium spp., and brome, Bromus spp., were infested during the spring, whereas the perennial johnsongrass, Sorghum halepense (L.) Pers., and Vasey's grass, Paspalum urvillei Steud., were infested throughout the year. Johnsongrass was the most prevalent host (41-78% relative abundance), but Vasey's grass (13-40% relative abundance) harbored as much as 62% of the recovered E. loftini immatures (during the winter). Young rice in newly planted fields did not host stem borers before June. April sampling in fallow rice fields showed that any available live grass material, volunteer rice or weed, can serve as a host during the spring. Our study suggests that noncrop grasses are year-round sources of E. loftini in Texas rice agroecosystems and may increase pest populations.

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Monitoring and First Discovery of the Mexican Rice BorerEoreuma loftini(Lepidoptera: Crambidae) in Louisiana

Cited by 36 publications

References 7 publications

Improved Chemical Control for the Mexican Rice Borer (Lepidoptera: Crambidae) in Sugarcane: Larval Exposure, a Novel Scouting Method, and Efficacy of a Single Aerial Insecticide Application

Improved Chemical Control for the Mexican Rice Borer (Lepidoptera: Crambidae) in Sugarcane: Larval Exposure, a Novel Scouting Method, and Efficacy of a Single Aerial Insecticide Application

Oviposition Behavior ofDiatraea saccharalis(Lepidoptera: Crambidae) on Different Rice Cultivars in Louisiana

Seasonal Infestations of Two Stem Borers (Lepidoptera: Crambidae) in Noncrop Grasses of Gulf Coast Rice Agroecosystems

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