Spatially mismatched trophic dynamics: cyclically outbreaking geometrids and their larval parasitoids

For trophic interactions to generate population cycles and complex spatio-temporal patterns, like travelling waves, the spatial dynamics must be matched across trophic levels. Here, we propose a spatial methodological approach for detecting such spatial match–mismatch and apply it to geometrid moths...

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Bibliographic Details
Published in:Biology letters (2005) 2010-08, Vol.6 (4), p.566-569
Main Authors: Hagen, Snorre B., Jepsen, Jane U., Schott, Tino, Ims, Rolf A.
Format: Article
Language:English
Subjects:
Animals
Demography
Host-Parasite Interactions - physiology
Hymenoptera
Larva - parasitology
Linear Models
Moths - parasitology
Natural Enemies
Norway
Population Cycles
Population Dynamics
Population Ecology
Population Synchrony
Travelling Waves
Wasps
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Summary:For trophic interactions to generate population cycles and complex spatio-temporal patterns, like travelling waves, the spatial dynamics must be matched across trophic levels. Here, we propose a spatial methodological approach for detecting such spatial match–mismatch and apply it to geometrid moths and their larval parasitoids in northern Norway, where outbreak cycles and travelling waves occur. We found clear evidence of spatial mismatch, suggesting that the spatially patterned moth cycles in this system are probably ruled by trophic interactions involving other agents than larval parasitoids.
ISSN:1744-9561
1744-957X
DOI:10.1098/rsbl.2009.1002