Results 171 to 180 of about 4,134 (201)

Chemosterilant and insecticidal activity of mixed aflatoxins against Anthonomus grandis (Coleoptera)

Journal of Invertebrate Pathology, 1978
Abstract A mixture of the four major aflatoxins at 0.06 ppm in food supplied to adult boll weevils, Anthonomus grandis , was an effective chemosterilant.
Moore, Jack H., Hammond, Abner M., Llewellyn, Gerald C.   +2 more
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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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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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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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Pectinases from boll weevil larvae, Anthonomus grandis

Journal of Insect Physiology, 1972
Abstract Assays were conducted throughout a wide pH range to measure the ability of extracts from third instar boll weevil larvae to degrade pectic substances. Pectin was deesterified and was depolymerized by both hydrolytic and trans -eliminative mechanisms. Sodium polypectate (deesterified pectin, or pectic acid) was depolymerized solely by trans
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Time course of enzyme development in the boll weevil, Anthonomus grandis

Comparative Biochemistry and Physiology Part B: Comparative Biochemistry, 1979
Abstract 1. 1. The specific activities of lactic dehydrogenase, α-hydroxybutyric dehydrogenase, glutamic oxalacetic transaminase, glutamic pyruvic transaminase, and acid phosphatase were monitored in adult male and female boll weevil homogenates for eleven days post emergence. 2. 2.
Yen-Yun H. Chang, James L. Frazier, James R. Heitz   +2 more
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Spermiogenesis in boll weevil, Anthonomus grandis Boheman (Coleoptera: Curculionidae)

International Journal of Insect Morphology and Embryology, 1975
Abstract Spermiogenesis of Anthonomus grandis Boheman, the cotton boll weevil, was studied by transmission electron microscopy. The basic morphologic features investigated and illustrated were: acrosome, nucleus, fibrous masses, microtubules, and mitochondrial derivatives.
George Gassner, Dinah Childress, Donna J. Klemetson   +2 more
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Regulation of vitellogenin synthesis and uptake in the boll weevil, Anthonomus grandis

Physiological Entomology, 1997
Abstract. Hormonal factors influencing reproductive development were examined in adult boll weevils, Anthonomus grandis (Boheman) (Coleoptera: Curculionidae). Long‐day, high‐temperature rearing conditions promote reproduction whereas short‐day, low‐temperature conditions ...
TINA E. TAUB‐MONTEMAyOR, MARy ANN RANKIN   +1 more
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Some relationships between the boll weevil, Anthonomus grandis Boheman, and Mattesia grandis McLaughlin (Protozoa: Neogregarinida)

Journal of Invertebrate Pathology, 1965
Abstract The neogregarine, Mattesia grandis McLaughlin, infects larvae and adults of the boll weevil, Anthonomus grandis Boheman, when the spores are ingested; larvae, pupae, and adults are susceptible. Sporogony and production of free spores usually occurred 7 days after infection. Development of the pathogen was retarded in adults when little or no
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An Immunological Study of the Antigens of Anthonomus grandis grandis and Anthonomus grandis thurberiae12

Annals of the Entomological Society of America, 1968
Bruce Glick, Norman Mitlin
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