An investigation of plant-derived cardiac glycosides as a possible basis for aposematism in the aphidophagous hoverfly Ischiodon aegryptius (Wiedemann) (Diptera: Syrphidae)

Malcolm, Stephen Baillie

Title: An investigation of plant-derived cardiac glycosides as a possible basis for aposematism in the aphidophagous hoverfly Ischiodon aegryptius (Wiedemann) (Diptera: Syrphidae)
Creator: Malcolm, Stephen Baillie
ThesisAdvisor: Whitehead, G.B.
ThesisAdvisor: Allanson, B.R.
Subject: Diptera
Subject: Syrphidae
Subject: Aphidophagous insects
Subject: Predatory animals
Subject: Insect-plant relationships
Subject: Insect pests -- Biological control
Subject: Insects as carriers of disease
Date: 1977
Type: Thesis
Type: Masters
Type: MSc
Identifier: vital:5864
Identifier: http://hdl.handle.net/10962/d1012798
Identifier: Diptera
Identifier: Syrphidae
Identifier: Aphidophagous insects
Identifier: Predatory animals
Identifier: Insect-plant relationships
Identifier: Insect pests -- Biological control
Identifier: Insects as carriers of disease
Description: The chemical defences of insects against predators are either passive or aggressive. Passive defence is achieved through crypsis, and aggressive defence is maintained by a conspicuous or 'aposematic' (Poulton, 1890) appearance that advertises some noxious quality of the insect harmful to a predator. Aposematism is mutually beneficial to both the bearer and its predator, whereas crypsis only benefits the prey species. It is therefore not surprising that the fascinating array of chemical defences in insects is both diverse and widespread (Roth and Eisner, 1962). Intro. p. 1.
Format: 157 p., pdf
Publisher: Rhodes University, Faculty of Science, Zoology and Entomology
Language: English
Rights: Malcolm, Stephen Baillie

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