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Journal article
Economic analysis of habitat manipulation in Brassica pest management: Wild plant species suppress cabbage webworm.
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Journal article
For antagonists and mutualists: the paradox of insect toxic secondary metabolites in nectar and pollen
The plant kingdom produces an extraordinary diversity of secondary metabolites and the majority of the literature supports a defensive ecological role for them, particularly against invertebrate herbivores (antagonists). Plants also produce secondary compounds in floral nectar and pollen and these are often similar to those produced for defense against invertebrates...Stevenson, Philip C.
Bombus, Bee pathogens, Nicotine, Caffeine, Pollinator specialization, Nectar chemicals, and Crithidia bombi
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Journal article
Rosmarinic acid in Canna generalis activates the medial deterrent chemosensory neurone and deters feeding in the tobacco hornworm Manduca sexta
For all but a very few highly specialized insect feeders, Canna generalis L. (Cannaceae) is unacceptable as a food plant and is a highly potent feeding deterrent for the tobacco hornworm Manduca sexta Johan. (Lepidoptera). The present study describes the isolation of an active deterrent compound, rosmarinic acid (RA) from...Simmonds, Monique S.J. ; Stevenson, Philip C. ; Hanson, Frank E.
sensory coding, feeding behaviour, phagodeterrents, phytochemistry, Lepidoptera, and insect neurophysiology
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Journal article
A comparison of coffee floral traits under two different agricultural practices
Floral traits and rewards are important in mediating interactions between plants and pollinators. Agricultural management practices can affect abiotic factors known to influence floral traits; however, our understanding of the links between agricultural practices and floral trait expression is still poorly understood. Variation in floral morphological, nectar, and pollen traits...Prado, Sara Guiti ; Collazo, Jaime A. ; Stevenson, Philip C. ; Irwin, Rebecca E.
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Journal article
Age-related pharmacodynamics in a bumblebee–microsporidian system mirror similar patterns in vertebrates
Immune systems provide a key defence against diseases. However, they are not a panacea and so both vertebrates and invertebrates co-opt naturally occurring bioactive compounds to treat themselves against parasites and pathogens. In vertebrates, this co-option is complex, with pharmacodynamics leading to differential effects of treatment at different life stages,...Folly, Arran J. ; Stevenson, Philip C. ; Brown, Mark J. F.
Bombus terrestris, pollinator health, medication, Trifolium pratense, phytochemicals, and Nosema bombi
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Journal article
Opportunities and Scope for Botanical Extracts and Products for the Management of Fall Armyworm (Spodoptera frugiperda) for Smallholders in Africa.
Fall Armyworm (FAW) (Spodoptera frugiperda) is a polyphagous and highly destructive pest of many crops. It was recently introduced into Africa and now represents a serious threat to food security, particularly because of yield losses in maize, which is the staple food for the majority of small-scale farmers in Africa....Rioba, Naomi B. ; Stevenson, Philip C.
Biopesticides, Botanicals, Fall Armyworm, Prospects, Zea mays, Corn, Pests, Africa, Spodoptera frugiperda, and Insects
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Journal article
From plant fungi to bee parasites: mycorrhizae and soil nutrients shape floral chemistry and bee pathogens
Bee populations have experienced declines in recent years, due in part to increased disease incidence. Multiple factors influence bee-pathogen interactions, including nectar and pollen quality and secondary metabolites. However, we lack an understanding of how plant interactions with their environment shape bee diet quality. We examined how plant interactions with...