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The voyage of an invasive species across continents: genetic diversity of North American and European Colorado potato beetle populations
The paradox of successful invading species is that they are likely to be genetically depauperate compared to their source population. This study on Colorado potato beetles is one of the few studiesExpand
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Predator Mixes and the Conspicuousness of Aposematic Signals
Conspicuous warning signals of unprofitable prey are a defense against visually hunting predators. They work because predators learn to associate unprofitability with bright coloration and becauseExpand
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Energetic costs of size and sexual signalling in a wolf spider
A prerequisite for honest handicaps is that there are significant condition–dependent costs in the expression of sexual traits. In the wolf spider Hygrolycosa rubrofasciata (Ohlert), sexualExpand
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Imperfect Batesian mimicry—the effects of the frequency and the distastefulness of the model
Batesian mimicry is the resemblance between unpalatable models and palatable mimics. The widely accepted idea is that the frequency and the unprofitability of the model are crucial for theExpand
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Viability costs of condition-dependent sexual male display in a drumming wolf spider
According to the conditional handicap models females use male ornaments as honest signals of male viability. The assumptions for honest signalling are that the traits are costly and that they reflectExpand
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Environmental fluctuations can select for generalism, which is also hypothesized to increase organisms’ ability to invade novel environments. Here, we show that across a range of temperatures,Expand
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Disruption or aposematism? Significance of dorsal zigzag pattern of European vipers
European vipers (genus Vipera) are venomous and often have a distinctive dorsal zigzag pattern. The zigzag pattern of vipers has been suggested to be an example of disruptive colouration whichExpand
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Diet affects the immune defence and life-history traits of an Arctiid moth Parasemia plantaginis
Questions: Does herbivores’ diet per se affect their immunocompetence? Do other fitness measures vary accordingly? Can the observed differences be explained by the chemical composition of the diets?Expand
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Tracking the evolution of warning signals
EVOLUTIONARYstudies are hampered by a lack of experimental ways in which to test past events such as the origination of aposematism1–7, whereby unpalatable or poisonous prey signal theirExpand
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Does predation maintain eyespot plasticity in Bicyclus anynana?
The butterfly Bicyclus anynana exhibits phenotypic plasticity involving the wet–season phenotype, which possesses marginal eyespots on the ventral surface of the wings, and the dry–season form, whichExpand
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