Pink Bollworm: Reduced Growth and Survival of Larvae Placed on Bolls of Cotton Race Stocks12

Wilson, F. D.; Wilson, R. L.; George, B. W.

doi:10.1093/jee/72.6.860

Cited by 6 publications

(9 citation statements)

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“…As expected (Wilson et al 1979, Wilson andGeorge 1984), survival was lower on TX53 than on DP50 (F ϭ 13.21; df ϭ 1, 224; P ϭ 0.0003). None of the effects involving origin affected survival (all P values Ͼ0.05), indicating similar survival patterns of the APHIS and MOV populations on each cultivar.…”

Section: Aphis and Mov Populationssupporting

confidence: 60%

“…Compared with other cotton cultivars, TX53 has fewer pink bollworm neonates successfully entering bolls (Wilson and George 1984), lower pupal survival, but higher pupal weight (Wilson et al 1979). These results suggest that TX53 has resistance factors in the carpel wall of bolls and in seeds.…”

Section: Methodsmentioning

confidence: 99%

“…This result supported the idea that using refuge cultivars with characteristics that increase costs (e.g., high gossypol content) could enhance resistance management. Although gossypol in artiÞcial diet affected costs in pink bollworm (Carriè re et al 2004b), results from diet bioassays do not necessarily parallel results with plants ( Wilson et al 1979). Accordingly, we assessed herein how different cultivars of non-Bt cotton affect pink bollworm Þtness costs.…”

mentioning

confidence: 99%

“…The resistant larvae were resistant to Cry1Ac, the Bt toxin produced by most Bt cotton, and can survive on Bt cotton (Tabashnik et al 2005). The cotton cultivars evaluated were ÔDelta Pine 50Õ (DP50; Monsanto, MO) and ÔTexas 53Õ (TX53), a primitive Texas race stock resistant to pink bollworm (Wilson et al 1979, Wilson andGeorge 1984). We previously documented costs on DP50 (Carriè re et al 2001).…”

mentioning

confidence: 99%

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Effects of Cotton Cultivar on Fitness Costs Associated with Resistance of Pink Bollworm (Lepidoptera: Gelechiidae) to Bt Cotton

Carrière¹,

Ellers-Kirk²,

Biggs³

et al. 2005

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Fitness costs associated with insect resistance to transgenic crops producing toxins from Bacillus thuringiensis (Bt) reduce the fitness on non-Bt refuge plants of resistant individuals relative to susceptible individuals. Because costs may vary among host plants, choosing refuge cultivars that increase the dominance or magnitude of costs could help to delay resistance. Specifically, cultivars with high concentrations of toxic phytochemicals could magnify costs. To test this hypothesis, we compared life history traits of three independent sets of pink bollworm, Pectinophora gossypiella (Saunders), populations on two cotton cultivars that differed in antibiosis against this cotton pest. Each set had an unselected susceptible population, a resistant population derived by selection from the susceptible population, and the F1 progeny of the susceptible and resistant populations. Confirming previous findings with pink bollworm feeding on cotton, costs primarily affected survival and were recessive on both cultivars. The magnitude of the survival cost did not differ between cultivars. Although the experimental results did not reveal differences between cultivars in the magnitude or dominance of costs, modeling results suggest that differences between cultivars in pink bollworm survival could affect resistance evolution. Thus, knowledge of the interaction between host plants and fitness costs associated with resistance to Bt crops could be helpful in guiding the choice of refuge cultivars.

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Section: Aphis and Mov Populationssupporting

confidence: 60%

Section: Methodsmentioning

confidence: 99%

mentioning

confidence: 99%

mentioning

confidence: 99%

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Effects of Cotton Cultivar on Fitness Costs Associated with Resistance of Pink Bollworm (Lepidoptera: Gelechiidae) to Bt Cotton

Carrière¹,

Ellers-Kirk²,

Biggs³

et al. 2005

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“…In the USA and Egypt the damage was caused by PBW (Wilson et al, 1979;Abul-Nasr et al, 1983) whereas in Egypt and Asian countries such as Israel, Syria and India the damage was caused by SBW (Klein et al, 1981;Rashad and Ammar, 1984;Al-Mosa, 1986;Hiremath, 1987). Stam and Al-Mosa (1990) reported that SBW was the major pest of cotton plants and caused considerable damage to cotton fields in Syria.…”

Section: Introductionmentioning

confidence: 99%

The effects of the infestation ratio of spiny bollworm (Earias insulana) and pink bollworm (Pectinophora gossypiella) on cotton yield grown in semi‐arid region of Turkey

Ünlü

Bilgiç

2004

J Applied Entomology

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Field studies were conducted in Harran Plain, Turkey, to investigate the infestation of spiny bollworm (SBW) and pink bollworm (PBW) in cotton blind bolls during the period 1999-2001. Blind bolls left on the cotton plants after the harvest were collected, and the PBW and SBW larvae, which are the causes of infection were counted in the laboratory by splitting the bolls. The statistical methods reveal that the infestation ratio variable plays an important role in reducing cotton yield. The infestation ratio variable was found to be statistically significant in all models used. Different soil types may have little effects on yield. We also estimate elasticity of yield with respect to infestation ratio variable. A 1% increase in infestation ratio would reduce about 2.5-6% of cotton yield. Although the infestation ratio of cotton yield is inelastic, which means that the yield is less responsive to the infestation ratio, the elasticity is however an economically important indication because additional cost spent on pests will increase total cost thereby increasing the level where marginal revenue equals the marginal cost.

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History and Status of Host Plant Resistance in Cotton to Insects in the United States1

Smith

1992

Advances in Agronomy

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Pink Bollworm: Reduced Growth and Survival of Larvae Placed on Bolls of Cotton Race Stocks12

Cited by 6 publications

References 0 publications

Effects of Cotton Cultivar on Fitness Costs Associated with Resistance of Pink Bollworm (Lepidoptera: Gelechiidae) to Bt Cotton

Effects of Cotton Cultivar on Fitness Costs Associated with Resistance of Pink Bollworm (Lepidoptera: Gelechiidae) to Bt Cotton

The effects of the infestation ratio of spiny bollworm (Earias insulana) and pink bollworm (Pectinophora gossypiella) on cotton yield grown in semi‐arid region of Turkey

History and Status of Host Plant Resistance in Cotton to Insects in the United States1

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