Outbreaking forest insect drives phase synchrony among sympatric folivores: Exploring potential mechanisms
Autor: | Andrew M. Liebhold, Christer Björkman, Maartje J. Klapwijk, Ottar N. Bjørnstad, Alain Roques |
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Přispěvatelé: | Forest Service, Northern Research Station, United States Department of Agriculture, Czech University of Life Sciences Prague (CZU), Department of Ecology, Swedish University of Agricultural Sciences (SLU), Unité de recherche Zoologie Forestière (URZF), Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), Department of Entomology [University Park], Pennsylvania State University (Penn State), Penn State System-Penn State System |
Jazyk: | angličtina |
Rok vydání: | 2020 |
Předmět: |
0106 biological sciences
[SDE.MCG]Environmental Sciences/Global Changes Population 010603 evolutionary biology 01 natural sciences Zeiraphera griseana Lepidoptera genitalia [SDV.SA.SF]Life Sciences [q-bio]/Agricultural sciences/Silviculture forestry population dynamics education Ecology Evolution Behavior and Systematics Trophic level education.field_of_study biology outbreak Ecology trophic 010604 marine biology & hydrobiology interspecific synchrony Interspecific competition 15. Life on land biology.organism_classification [SDV.BA.ZI]Life Sciences [q-bio]/Animal biology/Invertebrate Zoology Sawfly Sympatric speciation Epirrita [SDE]Environmental Sciences folivore |
Zdroj: | Population Ecology Population Ecology, Springer Verlag, 2020, 62 (4), pp.372-384. ⟨10.1002/1438-390X.12060⟩ |
ISSN: | 1952-1979 1438-3896 1438-390X |
DOI: | 10.1002/1438-390X.12060⟩ |
Popis: | International audience; We explore a common feature of insect population dynamics, interspecific synchrony, which refers to synchrony in population dynamics among sympatric populations of different species. Such synchrony can arise via several possible mechanisms, including shared environmental effects and shared trophic interactions, but distinguishing the relative importance among different mechanisms can be challenging. We analyze interannual time series of population densities of the larch budmoth,Zeiraphera griseana(Lepidoptera: Tortricidae), along with six sympatric larch-feeding folivores from a site in the European Alps 1952-1979. These species include five lepidopterans,Exapate duratella,Ptycholomoides aeriferana,Spilonota laricana,Epirrita autumnataandTeleiodes saltuum, and one hymenopteran sawflyPristiphora laricis. We document that the highly regular oscillatory behavior (period 9-10 years) ofZ.griseanapopulations is similarly evident in the dynamics of most of the sympatric folivores. We also find that all of the sympatric species are phase synchronized withZ.griseanapopulations with half of the sympatric species exhibiting nonlagged phase synchrony and three of the species exhibiting 2-5 year lags behindZ.griseanapopulations. We adapt a previously developed tritrophic model ofZ.griseanadynamics to explore possible mechanisms responsible for observed phase synchronization. Results suggest that either shared stochastic influences (e.g., weather) or shared parasitoid impacts are likely causes of nonlagged phase synchronization. The model further indicates that observed patterns of lagged phase synchronization are most likely caused by either shared delayed induced host plant defenses or direct density-dependent effects shared withZ.griseana. |
Databáze: | OpenAIRE |
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