DEVELOPMENTAL, SURVIVAL, AND REPRODUCTIVE PARAMETERS OF BERTHA ARMYWORM, <i>MAMESTRA CONFIGURATA</i> (LEPIDOPTERA: NOCTUIDAE) ON FOUR PLANT SPECIES

Turnock, W. J.

doi:10.4039/ent1171267-10

Cited by 20 publications

(9 citation statements)

References 14 publications

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“…Mamestra configurata (bertha armyworm) is a Noctuid moth native to western North America and is a serious, sporadic pest of oilseed rapes (Brassica napus and Brassica rapa) and other crops (Turnock, 1985;Mason et al, 1998). A common theme in developing alternate pest control strategies has been to disrupt insect midgut physiology and/or digestive biochemistry.…”

Section: Introductionmentioning

confidence: 99%

Modeling the structure of the Type I peritrophic matrix: characterization of a Mamestra configurata intestinal mucin and a novel peritrophin containing 19 chitin binding domains

Shi

Chamankhah

Visal-Shah

et al. 2004

Insect Biochemistry and Molecular Biology

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Section: Introductionmentioning

confidence: 99%

Modeling the structure of the Type I peritrophic matrix: characterization of a Mamestra configurata intestinal mucin and a novel peritrophin containing 19 chitin binding domains

Shi

Chamankhah

Visal-Shah

et al. 2004

Insect Biochemistry and Molecular Biology

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“…[16] Bertha armyworm is used as a model insect in various physiological and biochemical studies. Its biology and ecology are well known and it can be successfully reared in the laboratory on a synthetic diet.…”

Section: Insect Rearingmentioning

confidence: 99%

Arsenic accumulation, biotransformation and localisation in bertha armyworm moths

Andrahennadi

Pickering

2008

Environ. Chem.

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Environmental context. Insects play an important role in the impact of environmental pollutants such as arsenic. They may accumulate arsenic to high levels, potentially modifying its chemical form, which affects the insects' toxicity to predators such as fish and birds. Here we use synchrotron X-ray techniques to determine the distribution and chemical form of arsenic in larva, pupa and adult of the bertha armyworm moth.Abstract. Insects are important in bioaccumulation and dispersal of environmental contaminants such as arsenic, and biotransformation of arsenic to various chemical forms directly impacts its toxicity to insects and to their predators. In a model study, the toxic effects and biotransformation of arsenic were examined in larvae, pupae and adults of bertha armyworm moth (Mamestra configurata Walker) (Lepidoptera: Noctuidae). A synthetic diet containing 100 µM arsenate caused reduced larval survival and increased pupal stage duration but no effect on pupal weight or larval stage duration. Synchrotron X-ray absorption spectroscopy (XAS) showed that larvae biotransformed dietary arsenate to yield predominantly trivalent arsenic coordinated with three aliphatic sulfurs, modelled as As III -tris-glutathione. Similar species were found in pupae and adults. XAS imaging with micro X-ray fluorescence imaging revealed highly localised arsenic species, and zinc and copper within the gut. The implication of these arsenic species in the diets of predators is discussed.

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“…Mamestra configurata (bertha armyworm) is a Noctuid moth native to western North America and has become a serious, sporadic pest of oilseed rapes (Brassica napus and Brassica rapa) and other crops (Turnock, 1985;Mason et al, 1998). A common theme in developing alternate pest control strategies has been to disrupt insect midgut physiology and/or digestive biochemistry.…”

Section: Introductionmentioning

confidence: 99%

Midgut proteases from Mamestra configurata (Lepidoptera: Noctuidae) larvae: Characterization, cDNA cloning, and expressed sequence tag analysis

Hegedus

Baldwin

O’Grady

et al. 2003

Arch Insect Biochem Physiol

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The activities of digestive protease within the midgut of Mamestra configurata (bertha armyworm) larvae were examined using specific substrates and protease inhibitors. The bulk of the activity was associated with serine proteases comprising trypsin-, chymotrypsin-, and elastase-like enzymes. At least 10-15 serine protease isozymes were detected using one-dimension gelatin gel electrophoresis. Cysteine or aspartic protease activities were not present; however, amino- and carboxypeptidase activities were associated with the midgut extract. Midgut proteases were active in the pH range of 5.0-12.0 with peaks at pH 7.5 and 11.0. In general, the middle region of the midgut exhibited a higher pH (approximately 8.0) than either the posterior or anterior regions (approximately 7.3-7.7). Moulting larvae possessed a neutral gut pH that was 0.5-1.5 units below that of feeding larvae. Degenerate PCR and expressed sequence tag (EST)-based approaches were used to isolate 30 distinct serine protease encoding cDNAs from a midgut-specific cDNA library including 8 putative trypsins, 9 chymotrypsins, 1 elastase, and 12 whose potential activities could not be determined. cDNAs encoding three amino- and two carboxypeptidases were also identified. Larvae feeding upon artificial diet containing 0.2% soybean trypsin inhibitor experienced a significant delay in development.

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DEVELOPMENTAL, SURVIVAL, AND REPRODUCTIVE PARAMETERS OF BERTHA ARMYWORM, MAMESTRA CONFIGURATA (LEPIDOPTERA: NOCTUIDAE) ON FOUR PLANT SPECIES

Cited by 20 publications

References 14 publications

Modeling the structure of the Type I peritrophic matrix: characterization of a Mamestra configurata intestinal mucin and a novel peritrophin containing 19 chitin binding domains

Modeling the structure of the Type I peritrophic matrix: characterization of a Mamestra configurata intestinal mucin and a novel peritrophin containing 19 chitin binding domains

Arsenic accumulation, biotransformation and localisation in bertha armyworm moths

Midgut proteases from Mamestra configurata (Lepidoptera: Noctuidae) larvae: Characterization, cDNA cloning, and expressed sequence tag analysis

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