Robert F. Denno (1945-2008): insect ecologist extraordinaire.

Plant-mediated interactions in herbivorous insects: mechanisms, symmetry, and challenging the paradigms of competition past

Interspecific interactions between insect herbivores can be either negative (competitive) or positive (facilitative) (Damman 1993, Denno et al. 1995). In the context of traditional community ecology, however, negative interactions have received the most attention (e.g., Lawton and Strong 1981, Schoener 1982, Strong et al. 1984, Denno et al. 1995) until quite recently (e.g., Lill and Marquis 200...

Field evidence for indirect interactions between foliar-feeding insect and root-feeding nematode communities on Nicotiana tabacum

1. As herbivory often elicits systemic changes in plant traits, indirect interactions via induced plant responses may be a pervasive feature structuring herbivore communities. Although the importance of this phenomenon has been emphasised for herbivorous insects, it is unknown if and how induced responses contribute to the organisation of other major phytoparasitic taxa. 2. Survey and experimen...

Physicians and execution--highlights from a discussion of lethal injection.

Inducible Plant Responses Linking Above- and Below-ground Herbivory: Ecological Significance and Underlying Mechanisms

Title: INDUCIBLE PLANT RESPONSES LINKING ABOVEAND BELOW-GROUND HERBIVORY: ECOLOGICAL SIGNIFICANCE AND UNDERLYING MECHANISMS Ian Kaplan, Doctor of Philosophy, 2007 Directed By: Professor Robert F. Denno, Department of Entomology Aboveand below-ground organisms can indirectly affect one another via several recently-described mechanisms, one such mechanism being herbivore-induced plant responses. ...

INTERSPECIFIC INTERACTIONS IN PHYTOPHAGOUS INSECTS: Competition Reexamined and Resurrected

This review reevaluates the importance of interspecific competition in the population biology of phytophagous insects and assesses factors that mediate competition. An examination of 193 pair-wise species interactions, repre­ senting all major feeding guilds, provided information on the occurrence, frequency, symmetry, consequences, and mechanisms of competition. Inter­ specific competition occ...