Results 131 to 140 of about 28,297 (171)

Metabolism of busulfan in the boll weevil (Anthonomus grandis Boheman)

Pesticide Biochemistry and Physiology, 1971
Abstract 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, Norman Mitlin, A.C. Thompson   +2 more
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Anthonomus grandis . [Distribution map].

Distribution Maps of Plant Pests, 2005
Abstract 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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Efficacy and Degradation of Fipronil Applied to Cotton for Control of Anthonomus grandis grandis (Coleoptera: Curculionidae)

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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Digestive Anatomy of the Adult Boll Weevil, Anthonomus grandis grandis Boheman (Coleoptera: Curculionidae)

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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Taxonomy of the Subspecies of Anthonomus grandis (Coleoptera: Curculionidae)

Annals of the Entomological Society of America, 1966
In the years since the thurberia weevil, Anthonomus grandis thurberiae Pierce, was described, attempts to separate it from the boll weevil, A. g. grandis Boheman, by using the characters noted by Pierce have met with indifferent success. In an intensive study of specimens clearly representative of the 2 named subspecies of grandis , 3 characters were ...
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Collection of pheromone from atmosphere surrounding boll weevils,Anthonomus grandis

Journal of Chemical Ecology, 1989
An effluvial method was developed to collect the pheromone, grandlure from actively calling male boll weevils,Anthonomus grandis Boheman. The adsorbant, Porapak Q (ethylvinylbenzene-divinylbenzene), was utilized to trap and concentrate the pheromone.
J F, Chang, J H, Benedict, T L, Payne, B J, Camp, S B, Vinson   +4 more
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Proteolytic processing of the vitellogenin precursor in the boll weevil, Anthonomus grandis

Archives of Insect Biochemistry and Physiology, 1993
AbstractThe soluble proteins of the eggs of the coleopteran insect Anthonomus grandis Boheman, the cotton boll weevil, consist almost entirely of two vitellin types with Mrs of 160,000 and 47,000. We sequenced their N‐terminal ends and one internal cyanogen bromide fragment of the large vitellin and compared these sequences with the deduced amino acid ...
L J, Heilmann, P M, Trewitt, A K, Kumaran   +2 more
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Functions of the spermathecal muscle of the boll weevil, Anthonomus grandis

Journal of Insect Physiology, 1975
Abstract In female boll weevils, Anthonomus grandis, spermathecal filling was not affected by severing the spermathecal muscles. Females whose spermathecal muscles were severed 2 to 4 weeks after mating laid infertile eggs and resumed virginal ovipositional behaviour indicating the importance of this muscle in supplying sperm for egg fertilization ...
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The rôle of the spermathecal gland of the boll weevil, Anthonomus grandis

Journal of Insect Physiology, 1975
Abstract Spermatozoa were relatively inactive and did not enter the spermatheca of female boll weevils, Anthonomus grandis, whose spermathecal glands were removed as teneral adults. However, these females were able to lay fertile eggs for a 2 week period.
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Acephate toxicity, metabolism, and anticholinesterase activity in Heliothis virescens (F.) and Anthonomus grandis grandis (Boheman)

Pesticide Biochemistry and Physiology, 1984
Abstract The toxicity (72 hr) of acephate and methamidophos to fourth-instar larvae of the tobacco budworm, Heliothis virescens (F.), was nearly equivalent. In contrast, toxicity (72 hr) of methamidophos to adult boll weevils, Anthonomus grandis grandis (Boheman), was substantially greater than that of acephate.
Randy L. Rose, Thomas C. Sparks
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