Results 171 to 180 of about 4,153 (216)
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Diapause in Anthonomus grandis Boh.
Journal of Economic Entomology, 1959Part of the boll weevil, Anthonomus grandis Boh., population enters diapause during late summer and early fall in Louisiana. Winter is passed in this condition. Diapause in this insect is characterized by cessation of gametogenesis and atrophy of gonads, increase in fat content, decrease in water content, and decrease in respiratory rate.
J. R. Brazzel, L. D. Newsom
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Absorption and metabolism of galactose and galactitol in Anthonomus grandis
Journal of Insect Physiology, 1971Abstract Galactitol is a significant metabolite of galactose in fasted adults of Anthonomus grandis ; this is the first time that galactitol has been found to be a metabolite of galactose in an insect in vivo . Galactitol is not metabolized, and galactose, at best, is poorly metabolized by the boll weevil to trehalose and glycogen. Because sizeable
W.C. Nettles, M.L. Burks
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Karyotypic analysis of the cotton boll weevil, Anthonomus grandis Boheman
Genetica, 2000The diploid chromosome number of the cotton boll weevil, Anthonomus grandis Boheman, is 44. Both C- and N-banding techniques of mitotic cells demonstrated constitutive heterochromatin in the p arm of the eight largest chromosomes, the p arm of the X chromosome, and the centromeric region of autosomal groups A-D.
L R, McNally, M L, Beck, C J, Biggers
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Toxic sugars and longevity of Anthonomus grandis
Journal of Insect Physiology, 1972Abstract Toxic sugars ( d -arabinose, l -rhamnose, and l -sorbose) were fed to adults of the boll weevil, Anthonomus grandis. Based on longevity as a criterion, arabinose was the most toxic of the three sugars. When fed to newly emerged adults, sucrose protected against arabinose poisoning.
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Discrimination of infested cotton squares by females of Anthonomus grandis
Journal of Pest Science, 2017The avoidance of infested squares of Gossypium hirsutum as oviposition substrate by females of Anthonomus grandis was studied following two approaches. First, the preference for oviposition in infested versus non-infested squares was studied in laboratory. Second, the distribution of ovipositions by A.
Ana Laura Nussenbaum +7 more
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Metabolism of busulfan in the boll weevil (Anthonomus grandis Boheman)
Pesticide Biochemistry and Physiology, 1971Abstract One-day-old male boll weevils, Anthonomus grandis Boheman, that had been forcefed 3 H, and 14 C-labeled busulfan were held for 24 and 72 hr, respectively. The resulting metabolites from the feces and extracts of the weevils were analyzed by thin-layer chromatography, gas-liquid chromatography, and mass spectroscopy.
Glenn Wiygul +2 more
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Journal of Economic Entomology, 1999
Fipronil was applied to cotton by ground sprayer at ultralow volume and conventional spray rates. Boll weevil mortality and residue analysis of fipronil and its metabolites at 0,1, 2, 3, and 6 d after application were used to evaluate treatments. An evaluation of the toxicity of fipronil and metabolites to boll weevils also was conducted.
Joseph E. Mulrooney, Deepa Goli
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Fipronil was applied to cotton by ground sprayer at ultralow volume and conventional spray rates. Boll weevil mortality and residue analysis of fipronil and its metabolites at 0,1, 2, 3, and 6 d after application were used to evaluate treatments. An evaluation of the toxicity of fipronil and metabolites to boll weevils also was conducted.
Joseph E. Mulrooney, Deepa Goli
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Annals of the Entomological Society of America, 1968
Typical pupae of the boll weevil, Anthonomus grandis grandis Boheman, from the southeastern United States were found to differ in certain respects from typical pupae of the thurberia weevil, A. grandis thurberiae Pierce, from Arizona. The differences are found in the relative length of a pair of tubercles on the rostrum, in the number of well-developed
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Typical pupae of the boll weevil, Anthonomus grandis grandis Boheman, from the southeastern United States were found to differ in certain respects from typical pupae of the thurberia weevil, A. grandis thurberiae Pierce, from Arizona. The differences are found in the relative length of a pair of tubercles on the rostrum, in the number of well-developed
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Annals of the Entomological Society of America, 1981
A study of boll weevil digestive anatomy revealed previously unknown aspects, e.g. particularly, a series of dentate plates at the pyloric valve region, and micropores over the intima of the rest of the hindgut. Topographic differences were found between the brush border of the anterior midgut and that of the posterior midgut, and a cluster of ...
M. W. Macgown, P. P. Skorowski
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A study of boll weevil digestive anatomy revealed previously unknown aspects, e.g. particularly, a series of dentate plates at the pyloric valve region, and micropores over the intima of the rest of the hindgut. Topographic differences were found between the brush border of the anterior midgut and that of the posterior midgut, and a cluster of ...
M. W. Macgown, P. P. Skorowski
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Anthonomus grandis . [Distribution map].
Distribution Maps of Plant Pests, 2005Abstract A new distribution map is provided for Anthonomus grandis Boheman. Coleoptera: Curculionidae. Attacks cotton, Abutilon spp., Hibiscus spp., Thurberia thespesioides . Information is given on the geographical distribution in USA,
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