Search Results - "Chapman, R F"

CONTACT CHEMORECEPTION IN FEEDING BY PHYTOPHAGOUS INSECTS by Chapman, R. F

“…Gustatory receptors associated with feeding in phytophagous insects are broadly categorized as phagostimulatory or deterrent. No phytophagous insect is known…”
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Individual variation in response to altitude training by Chapman, Robert F, Stray-Gundersen, James, Levine, Benjamin D

“…Institute for Exercise and Environmental Medicine, Presbyterian Hospital of Dallas, Dallas 75231; and University of Texas Southwestern Medical Center, Dallas,…”
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Ancient trans-Atlantic flight explains locust biogeography: molecular phylogenetics of Schistocerca by Lovejoy, N.R, Mullen, S.P, Sword, G.A, Chapman, R.F, Harrison, R.G

“…The desert locust (Schistocerca gregaria) has been an important agricultural pest at least since biblical times. Although the ecology, physiology and behaviour…”
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Taste sensitivity of insect herbivores to deterrents is greater in specialists than in generalists : A behavioral test of the hypothesis with two closely related caterpillars by BERNAYS, E. A, OPPENHEIM, S, CHAPMAN, R. F, KWON, H, GOULD, F

“…Sensitivity of caterpillars of Heliothis virescens, a generalist, and H. subflexa, a specialist, to eight different plant secondary compounds was examined…”
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How female caterpillars accumulate their nutrient reserves by Telang, A, Booton, V, Chapman, R.F, Wheeler, D.E

“…Female Lepidoptera are often heavier than males. We examined the importance of consumption and post-ingestive processing as mechanisms for female Heliothis…”
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Taste cell responses in the polyphagous arctiid, Grammia geneura: towards a general pattern for caterpillars by Bernays, E.A, Chapman, R.F

“…The caterpillars of Grammia geneura are polyphagous as individuals. Electrophysiological responses of its medial and lateral galeal styloconic sensilla to 21…”
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A taste receptor neurone dedicated to the perception of pyrrolizidine alkaloids in the medial galeal sensillum of two polyphagous arctiid caterpillars by Bernays, E. A., Chapman, R. F., Hartmann, T.

“… It is shown that pyrrolizidine alkaloids are phagostimulants for the caterpillars of two polyphagous arctiid caterpillars, Estigmene acrea and Grammia…”
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Entomology in the Twentieth Century by Chapman, R. F

“…A number of landmark events in applied entomology are listed together with some insect-related studies that have had a major impact on biology in general. In…”
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Loss of gustatory responses to pyrrolizidine alkaloids after their extensive ingestion in the polyphagous caterpillar Estigmene acrea by Bernays, E A, Rodrigues, D, Chapman, R F, Singer, M S, Hartmann, T

“…Electrophysiological recordings from taste sensilla of the caterpillar Estigmene acrea with the pyrrolizidine alkaloid (PA) seneciphylline N-oxide demonstrated…”
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Plant secondary compounds and grasshoppers : Beyond plant defenses by BERNAYS, E. A, CHAPMAN, R. F

“…Modern grasshoppers probably evolved from polyphagous ancestors endowed with the ability to tolerate many plant secondary compounds. This tolerance involves…”
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Development of phenotypic differences in sensillum populations on the antennae of a grasshopper, Schistocerca americana by Chapman, R.F.

“…The development of diet‐induced phenotypic differences in numbers of sensilla on the antennae of the grasshopper Schistocerca americana was studied using the…”
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Taste receptors for pyrrolizidine alkaloids in a monophagous caterpillar by BERNAYS, E. A, CHAPMAN, R. F, LAMUNYON, C. W, HARTMANN, T

“…Caterpillars of Utetheisa ornatrix are monophagous on species of Crotalaria which they obtain pyrrolizidine alkaloids (PAs) for defense and which the males…”
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A highly sensitive taste receptor cell for pyrrolizidine alkaloids in the lateral galeal sensillum of a polyphagous caterpillar, Estigmene acraea by Bernays, E A, Chapman, R F, Hartmann, T

“…Adult males of Estigmene acraea use pyrrolizidine alkaloids to produce pheromones and all stages probably use pyrrolizidine alkaloids for defense. The…”
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Surviving the flood: plastron respiration in the non-tracheate arthropod Phrynus marginemaculatus (Amblypygi: Arachnida) by Hebets, Eileen A., F. Chapman, Reginald

“…Specimens of Phrynus marginemaculatus can remain responsive when submerged in water for more than 24 hours. Behavioral data indicate that P. marginemaculatus…”
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Gustatory responsiveness to pyrrolizidine alkaloids in the Senecio specialist, Tyria jacobaeae (Lepidoptera, Arctiidae) by Bernays, E.A, Hartmann, T, Chapman, R.F

“…Electrophysiological recordings from taste sensilla of the caterpillar Tyria jacobaeae with the pyrrolizidine alkaloids, characteristic compounds from their…”
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Phenotypic plasticity in numbers of antennal chemoreceptors in a grasshopper: effects of food by Bernays, E.A, Chapman, R.F

“…Grasshoppers, Schistocerca americana, reared from hatching on artificial diet had fewer sensilla on the antennae in the final larval stage than insects reared…”
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Exercise economy does not change after acclimatization to moderate to very high altitude by Lundby, C., Calbet, J. A. L., Sander, M., Van Hall, G., Mazzeo, R. S., Stray-Gundersen, J., Stager, J. M., Chapman, R. F., Saltin, B., Levine, B. D.

“…For more than 60 years, muscle mechanical efficiency has been thought to remain unchanged with acclimatization to high altitude. However, recent work has…”
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Control of muscle degeneration following autotomy of a hindleg in the grasshopper, Barytettix humphreysii by Personius, K.E, Chapman, R.F

“…When the grasshopper, Barrytettix humphreysii, sheds a hindlimb during autotomy, certain thoracic muscles degenerate although they are neither directly damaged…”
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Changes in taste receptor cell sensitivity in a polyphagous caterpillar reflect carbohydrate but not protein imbalance by Bernays, E.A, Chapman, R.F, Singer, M.S

“…Caterpillars of the polyphagous arctiid, Grammia geneura, have a single cell in the medial galeal sensillum that responds to some sugars and to some amino…”
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A neurophysiological study of sensitivity to a feeding deterrent in two sister species of Heliothis with different diet breadths by Bernays, E.A, Chapman, R.F

“…Heliothis subflexa and H. virescens are sister species that differ markedly in their hostplant specificity: the former is a specialist on one plant genus, the…”
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