Search Results - "Behmer, ST"

Not just the usual suspects: Insect herbivore populations and communities are associated with multiple plant nutrients by Joern, Anthony, Provin, Tony, Behmer, Spencer T

“…The relationship between plant nutrient content and insect herbivore populations and community structure has long interested ecologists. Insect herbivores…”
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Optimal foraging when regulating intake of multiple nutrients by Simpson, Stephen J., Sibly, Richard M., Lee, Kwang Pum, Behmer, Spencer T., Raubenheimer, David

“…There is growing evidence that, rather than maximizing energy intake subject to constraints, many animals attempt to regulate intake of multiple nutrients…”
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State-Dependent Learned Valuation Drives Choice in an Invertebrate by Pompilio, Lorena, Kacelnik, Alex, Behmer, Spencer T

“…Humans and other vertebrates occasionally show a preference for items remembered to be costly or experienced when the subject was in a poor condition (this is…”
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Nutrition as a neglected factor in insect herbivore susceptibility to Bt toxins by Deans, CA, Sword, GA, Behmer, ST

“…[Display omitted] •Bt resistance management assumes that resistance is solely due to genetic factors.•Environmental factors can mediate phenotypic plasticity…”
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Herbivore Foraging in Chemically Heterogeneous Environments: Nutrients and Secondary Metabolites by Behmer, Spencer T., Simpson, Stephen J., Raubenheimer, David

“…We provide an exemplar study for investigating the manner and extent to which plant secondary metabolites (PSMs) influence nutritional regulation in herbivores…”
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Nutrient regulation in relation to diet breadth: a comparison of Heliothis sister species and a hybrid by Lee, Kwang Pum, Behmer, Spencer T, Simpson, Stephen J

“…We examined the nutritional correlates of diet breadth in insect herbivores by comparing patterns of diet selection, nutrient balancing, post-ingestive…”
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Metal Hyperaccumulation in Plants: Mechanisms of Defence against Insect Herbivores by Behmer, S. T., Lloyd, C. M., Raubenheimer, D., Stewart-Clark, J., Knight, J., Leighton, R. S., Harper, F. A., Smith, J. A. C.

“…1. To determine the mechanisms by which metal hyperaccumulation in plants could provide a chemical defence against insect herbivores, the feeding behaviour and…”
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A comparison of nutritional regulation in solitarious- and gregarious-phase nymphs of the desert locust Schistocerca gregaria by Simpson, S J, Raubenheimer, D, Behmer, S T, Whitworth, A, Wright, G A

“…Nutritional regulatory responses were compared for the cryptic 'solitarious' and the conspicuously coloured, aggregating 'gregarious' phases of the desert…”
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A geometric analysis of nutrient regulation in the generalist caterpillar Spodoptera littoralis (Boisduval) by Lee, K.P, Behmer, S.T, Simpson, S.J, Raubenheimer, D

“…Nutritional regulatory responses of the generalist caterpillar Spodoptera littoralis (Boisduval) were explored, in choice and no-choice experiments, using the…”
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Macronutrient regulation in the Rasberry crazy ant (Nylanderia sp. nr. pubens) by Cook, S. C, Wynalda, R. A, Gold, R. E, Behmer, S. T

“…Animals grow and optimize performance when they collect foods in amounts and ratios that best meet their species-specific nutritional requirements. For…”
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A correlation between macronutrient balancing and insect host-plant range: evidence from the specialist caterpillar Spodoptera exempta (Walker) by Lee, Kwang Pum, Raubenheimer, David, Behmer, Spencer T, Simpson, Stephen J

“…In an earlier study, we showed that the ingestive responses of the generalist caterpillar Spodoptera littoralis to foods imbalanced in their…”
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Importance of dietary nitrogen and carbohydrates to survival, growth, and reproduction in adults of the grasshopper Ageneotettix deorum (Orthoptera: Acrididae) by Joern, A, Behmer, S.T

“…Key demographic traits in insect herbivores (survival, growth, and egg production) are often responsive to variation in diet quality, especially to dietary…”
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Variable rewards and discrimination ability in an insect herbivore: what and how does a hungry locust learn? by Behmer, Spencer T, Belt, Corlisa E, Shapiro, Martin S

“…With the exception of honeybees, there have been few good invertebrate models for associative learning. Grasshoppers and locusts (Orthoptera: Acrididae)…”
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Frequency-dependent food selection in locusts: a geometric analysis of the role of nutrient balancing by Behmer, Spencer T., Raubenheimer, David, Simpson, Stephen J.

“…We used a geometric modelling approach to investigate how changes in the frequency in the environment of foods with different nutritional profiles affect the…”
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Food distance and its effect on nutrient balancing in a mobile insect herbivore by Behmer, Spencer T., Cox, Edward, Raubenheimer, David, Simpson, Stephen J.

“…We investigated how the distance between foods of differing nutrient content affects macronutrient (protein and digestible carbohydrate) regulation and the…”
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Impact of diet quality on demographic attributes in adult grasshoppers and the nitrogen limitation hypothesis by JOERN, ANTHONY, BEHMER, SPENCER T.

“…1. Various formulations of the nutrient stress hypothesis predict that insect herbivore populations will respond positively to increased nutrient quality of…”
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Sterol Metabolic Constraints as a Factor Contributing to the Maintenance of Diet Mixing in Grasshoppers (Orthoptera: Acrididae) by Behmer, Spencer T., Elias, Damian O.

“…Sterols are essential nutrients for all arthropods, including grasshoppers, but metabolic constraints may limit which sterols can support normal growth and…”
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Post-ingestive feedbacks and associative learning regulate the intake of unsuitable sterols in a generalist grasshopper by Behmer, S T, Elias, D O, Bernays, E A

“…Behavioural studies of the grasshopper Schistocerca americana were undertaken to identify the mechanisms that regulate the intake of dietary sterols. In the…”
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Behavioural correlates of phenotypic plasticity in mouthpart chemoreceptor numbers in locusts by Opstad, Rebecca, Rogers, Stephen M, Behmer, Spencer T, Simpson, Stephen J

“…Rearing locusts in an impoverished chemosensory environment leads to fewer chemoreceptors developing on the mouthparts and antennae as adults but the…”
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Phytosterol Metabolism and Absorption in the Generalist Grasshopper, Schistocerca americana (Orthoptera: Acrididae) by Behmer, ST, Elias, DO, Grebenok, R J

“…A series of experiments, using GLC, RP-HPLC, and GC-MS techniques, were performed to examine the metabolic fate and absorption of different dietary sterols in…”
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