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Phenology of forest caterpillars and their host trees: The importance of synchrony

Van Asch, M. and Visser, M.E. (2007) Phenology of forest caterpillars and their host trees: The importance of synchrony. Annual Review of Entomology, 52, 37-55. ISSN 0066-4170.

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For many leaf-feeding herbivores, synchrony in phenology with their host plant is crucial as development outside a narrow phenological time window has severe fitness consequences. In this review, we link mechanisms, adaptation, and population dynamics within a single conceptual framework, needed for a full understanding of the causes and consequences of this synchrony. The physiological mechanisms underlying herbivore and plant phenology are affected by environmental cues, such as photoperiod and temperature, although not necessarily in the same way. That these different mechanisms lead to synchrony, even if there is spatial and temporal variation in plant phenology, is a result of the strong natural selection acting on the mechanism underlying herbivore phenology. Synchrony has a major impact on the population densities of leaf-feeding Lepidoptera, and years with a high synchrony may lead to outbreaks. Global climate change leads to a disruption of the synchrony between herbivores and their host plants, which may have major impacts for population viability if natural selection is insufficient to restore synchrony.

Item Type:Article
Institutes:Nederlands Instituut voor Ecologie (NIOO)
ID Code:4518
Deposited On:15 Sep 2009 02:00
Last Modified:24 Apr 2012 16:48

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