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Title: Avian cognition and the evolution of defences and warning signals in insects
Author: Halpin, Christina
ISNI:       0000 0001 3527 8828
Awarding Body: University of Newcastle
Current Institution: University of Newcastle upon Tyne
Date of Award: 2008
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Many insects are chemically defended and toxic to predators. Whilst some species avoid detection, so-called 'aposematic' insects use conspicuous colour pattems to advertise their toxins to potential predators. Although the initial evolution of aposematism is often considered a paradox due to the increased detection risk associated with conspicuousness, the role of learned avoidance and memory in naive predators is widely described as the major driving force. However, many insects have extemally detectable defences, and may be taste-rejected by predators. This role of taste-rejection has been largely overlooked, but could offer support for the theory of the evolution of aposematism by individual selection.
Supervisor: Not available Sponsor: Not available
Qualification Name: Thesis (Ph.D.) Qualification Level: Doctoral
EThOS ID:  DOI: Not available