The origin of autumn colours by coevolution.

@article{Archetti2000TheOO,
  title={The origin of autumn colours by coevolution.},
  author={Marco Archetti},
  journal={Journal of theoretical biology},
  year={2000},
  volume={205 4},
  pages={
          625-30
        }
}
  • M. Archetti
  • Published 21 August 2000
  • Biology, Medicine
  • Journal of theoretical biology
We lack an adaptive explanation for a striking phenomenon, that of bright colours displayed in autumn by the leaves of many deciduous trees. The usual explanation is that it is simply a non-adaptive secondary effect of leaf senescence. A game-theoretic model of biological signalling provides an adaptive hypothesis for autumn colours showing that they can be the result of a process of coevolution between insects and trees: if leaf colour acts as a warning indicator of the tree's vigour to autumn… Expand
The coevolution theory of autumn colours
  • M. Archetti, Sam P. Brown
  • Biology, Medicine
  • Proceedings of the Royal Society of London. Series B: Biological Sciences
  • 2004
TLDR
This work tries to clarify what the coevolution theory of autumn colours actually says and to correct some misunderstandings that have been put forward, and reviews current research on autumn colours. Expand
Autumn colours and the nutrient retranslocation hypothesis: a theoretical assessment.
  • M. Archetti
  • Biology, Medicine
  • Journal of theoretical biology
  • 2007
TLDR
It is shown with a model of insect-tree interaction that the system can actually evolve under particular conditions and the differences with the coevolution theory of autumn colours, available evidence and possible tests are discussed. Expand
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Observed colonization of the aphid Rhopalosiphum padi on individual tress of Prunus padus in autumn and observed a strong preference of aphids for trees with green leaves, the first direct observation of a key assumption of the coevolution theory, that parasites avoid bright colours. Expand
Evidence from the domestication of apple for the maintenance of autumn colours by coevolution
  • M. Archetti
  • Biology, Medicine
  • Proceedings of the Royal Society B: Biological Sciences
  • 2009
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It is shown that aphids avoid apple trees with red leaves in autumn and that their fitness in spring is lower on these trees, which suggests that red leaves are an honest signal of the quality of the tree as a host. Expand
The adaptive significance of autumn leaf colours
TLDR
It is argued that the principal assumptions of the theory that autumnal leaf colours were signals produced by the trees to warn potential insect herbivores of their defensive ability do not match current knowledge of plant pigment biochemistry and aphid ecology. Expand
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TLDR
It is suggested that aphid preference for green might have evolved to exploit better their host during the autumn rather than to improve their performance in spring. Expand
A field study with geometrid moths to test the coevolution hypothesis of red autumn colours in deciduous trees
TLDR
The results clearly showed that anthocyanin concentration was not correlated with the growth performance of the moths in any of the studied tree species, and this study does not support the coevolution hypothesis of autumn colours. Expand
Importance of olfactory and visual signals of autumn leaves in the coevolution of aphids and trees.
  • J. Holopainen
  • Biology, Medicine
  • BioEssays : news and reviews in molecular, cellular and developmental biology
  • 2008
TLDR
The indirect defence hypothesis is presented to explain low aphid diversity on tree species that are green during autumn and suggests that green foliage can continue to produce herbivore-inducible plant volatiles and maintain volatile-based indirect plant defences against aphids until leaf abscission. Expand
Classification of hypotheses on the evolution of autumn colours
TLDR
I review the hypotheses that have been proposed to explain the adaptive value of autumn leaf colours and defines assumptions and predictions, and discusses briefly conceptual problems and available evidence. Expand
Decoupling vigour and quality in the autumn colours game: weak individuals can signal, cheating can pay.
  • M. Archetti
  • Biology, Medicine
  • Journal of theoretical biology
  • 2009
TLDR
It is shown that in a theoretical model of insect-tree coevolution, signalling is still stable when vigour and defences are decoupled, and precise predictions are provided that can be used for planning future empirical test. Expand
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