• Publications
  • Influence
SEASONAL CHANGES IN OAK LEAF TANNINS AND NUTRIENTS AS A CAUSE OF SPRING FEEDING BY WINTER MOTH CATERPILLARS
TLDR
The content of oak leaf tannins, which inhibit the growth of winter moth larvae, increases during the summer and may render leaves less suitable for insect growth by further reducing the availability of nitrogen and perhaps also by influencing leaf palatability. Expand
Plant apparency and chemical defense
TLDR
A test of how far understanding of insect ecology has progressed will be the authors' ability to predict how patterns vary from one kind of community to another and how they will change when subjected to natural or human disturbance. Expand
Sodium: Stimulus for Puddling Behavior by Tiger Swallowtail Butterflies, Papilio glaucus
TLDR
Male Papilio glaucus butterflies are attracted to sand soaked with dillute aqueous solutions of sodium salts, andAcqlisition of sodium will be the main ecological function of pudding behavior. Expand
Stabilization of the Rate of Nitrogen Accumulation by Larvae of the Cabbage Butterfly on Wild and Cultivated Food Plants
TLDR
The growth of P. rapae larvae is limited by the availability of N in their food plants, N budgets for such larvae are of greater ecological significance than energy budgets, and that, in this case at least, natural selection favors the rate (power output) rather than the efficiency of a biological process. Expand
Habitat selection by the aphid parasite Diaeretiella rapae (Hymenoptera: Braconidae) and hyperparasite Charips brassicae (Hymenoptera : Cynipidae).
A suspected chemical means of habitat selection by Diaeretiella rapae , a primary parasite of aphids on crucifer plants, was investigated in the laboratory with the aid of an olfactometer. FemalesExpand
Flea Beetles and Mustard Oils: Host Plant Specificity of Phyllotreta cruciferae and P. striolata Adults (Coleoptera: Chrysomelidae)
TLDR
Field experiments showed that allyl isothiocyanate is a powerful attractant for adults of both P. cruciferae and P. striolata and the coincidence between the preferred plant families and the plant families known to contain mustard oils suggested that these compounds or their glycosides might be acting as chemical attractants for the beetles. Expand
Sequestration of aristolochic acids by the pipevine swallowtail, Battus philenor (L.): evidence and ecological implications
TLDR
This study confirmed that populations of B. philenor from Virginia and east Texas sequester aristolochic acids from its Aristolochia food plants, helping explain the abundant ecological data indicating that both immature and adult B. Philenor are unpalatable and protected from natural enemies. Expand
Allylglucosinolate and Herbivorous Caterpillars: A Contrast in Toxicity and Tolerance
TLDR
Larval growth of Spodoptera eridania, a generalist feeder, is inhibited by high but not by low concentrations of the compound, while that of Pieris rapae, a crucifer specialist, is not affected even by artificially high concentrations of allylglucosinolate. Expand
Defensive Ecology of the Cruciferae
TLDR
The defensive ecology of crucifers seems to typify that of herbaceous plants generally: chemical resistance, in the form of small amounts of toxic compounds, combined with low apparency to enemies which are adapted to the chemical defenses. Expand
Detoxication Enzymes in the Guts of Caterpillars: An Evolutionary Answer to Plant Defenses?
Higher activity of midgut microsomal oxidase enzymes in polyphagous than in monophagous species indicates that the natural function of these enzymes is to detoxify natural insecticides present in theExpand
...
1
2
3
4
5
...