The presence of root-feeding nematodes – Not AMF – Affects an herbivore dispersal strategy

Roissart, Annelies De; Peña, Eduardo de la; Oyen, Lien Van; Leeuwen, Thomas Van; Ballhorn, Daniel J.; Bonte, Dries

doi:10.1016/j.actao.2013.07.005

Cited by 6 publications

(5 citation statements)

References 56 publications

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“…Contrary to expectations and earlier work focusing at the local population level (De Roissart et al 2013), we witnessed negative dependence of dispersal propensity in the metapopulation for all treatments. Rodrigues & Johnstone (2014) demonstrated that a negative density dependence of dispersal can be selected for in temporally stable environments where local differences in resource quality persist over multiple generations.…”

Section: Discussioncontrasting

confidence: 99%

“…; De Roissart et al . ). Bean ( Phaseolus vulgaris L.) leaves of standardized size were used to create patches and placed in closed boxes (71 × 44 × 31 cm).…”

Section: Methodsmentioning

confidence: 97%

“…Freshly matured females constitute the dispersing phenotype in this species (Smitley & Kennedy 1985;Li & Margolis 1993;Bonte et al 2014;Fronhofer et al 2014;Van Petegem et al 2015). Under standardized conditions where resources are not limiting, dispersal rates increase in relation to the density of young inseminated females (Bitume et al 2013;De Roissart et al 2013). Bean (Phaseolus vulgaris L.) leaves of standardized size were used to create patches and placed in closed boxes (71 9 44 9 31 cm).…”

Section: Experimental System Of Artificial Metapopulationsmentioning

confidence: 99%

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Spatial and spatiotemporal variation in metapopulation structure affects population dynamics in a passively dispersing arthropod

Roissart

Wang

Bonte

2015

Journal of Animal Ecology

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The spatial and temporal variation in the availability of suitable habitat within metapopulations determines colonization-extinction events, regulates local population sizes and eventually affects local population and metapopulation stability. Insights into the impact of such a spatiotemporal variation on the local population and metapopulation dynamics are principally derived from classical metapopulation theory and have not been experimentally validated. By manipulating spatial structure in artificial metapopulations of the spider mite Tetranychus urticae, we test to which degree spatial (mainland-island metapopulations) and spatiotemporal variation (classical metapopulations) in habitat availability affects the dynamics of the metapopulations relative to systems where habitat is constantly available in time and space (patchy metapopulations). Our experiment demonstrates that (i) spatial variation in habitat availability decreases variance in metapopulation size and decreases density-dependent dispersal at the metapopulation level, while (ii) spatiotemporal variation in habitat availability increases patch extinction rates, decreases local population and metapopulation sizes and decreases density dependence in population growth rates. We found dispersal to be negatively density dependent and overall low in the spatial variable mainland-island metapopulation. This demographic variation subsequently impacts local and regional population dynamics and determines patterns of metapopulation stability. Both local and metapopulation-level variabilities are minimized in mainland-island metapopulations relative to classical and patchy ones.

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Section: Discussioncontrasting

confidence: 99%

“…; De Roissart et al . ). Bean ( Phaseolus vulgaris L.) leaves of standardized size were used to create patches and placed in closed boxes (71 × 44 × 31 cm).…”

Section: Methodsmentioning

confidence: 97%

Section: Experimental System Of Artificial Metapopulationsmentioning

confidence: 99%

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Spatial and spatiotemporal variation in metapopulation structure affects population dynamics in a passively dispersing arthropod

Roissart

Wang

Bonte

2015

Journal of Animal Ecology

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“…Because of its high fecundity and short generation time, the species causes serious damage to crops and plants in general. The species is known to engage in aerial dispersal under suitable meteorological conditions when environmental conditions are strongly deteriorating (Li and Margolies 1994, Clotuche et al 2011, De Roissart et al 2013. The species does, however, predominantly disperse by ambulatory movements, i.e., by walking from leaf to leaf.…”

Section: Study Speciesmentioning

confidence: 99%

Fitness maximization by dispersal: evidence from an invasion experiment

Bonte

Roissart

Wybouw

et al. 2014

Ecology

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Abstract. Dispersal is essential for population persistence in transient environments. While costs of dispersal are ubiquitous, individual advantages of dispersal remain poorly understood. Not all individuals from a population disperse, and individual heterogeneity in costs and benefits of dispersal underlie phenotype-dependent dispersal strategies. Dispersing phenotypes are always expected to maximize their fitness by adaptive decision making relative to the alternative strategy of remaining philopatric. While this first principle is well acknowledged in theoretical ecology, empirical verification is extremely difficult, due to a plethora of experimental constraints. We studied fitness prospects of dispersal in a game theoretical context using the two-spotted spider mite Tetranychus urticae as a model species. We demonstrate that dispersing phenotypes represent those individuals able to maximize their fitness in a novel, less populated environment reached after dispersal. In contrast to philopatric phenotypes, successful dispersers performed better in a low density post-dispersal context, but worse in a high density philopatric context. They increased fitness about 450% relative to the strategy of remaining philopatric. The optimization of phenotype-dependent dispersal, thus, maximizes fitness.

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“…Three-way interactions between nematodes, fungi, and aboveground insect herbivores have been investigated previously (e.g. De Roissart et al 2013;McCarville et al 2012;Zhou et al 2016). For instance, the simultaneous presence of a cyst nematode, a leaf stem fungus, and an aphid on soybean generally reduced the performance of the aphid and the fungus compared to their presence alone, but increased the performance of the nematode (e.g.…”

Section: No Competition Competitionmentioning

confidence: 99%

Antagonistic interactions between above- and belowground biota reduce their negative effects on a tree species

et al. 2020

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The presence of root-feeding nematodes – Not AMF – Affects an herbivore dispersal strategy

Cited by 6 publications

References 56 publications

Spatial and spatiotemporal variation in metapopulation structure affects population dynamics in a passively dispersing arthropod

Spatial and spatiotemporal variation in metapopulation structure affects population dynamics in a passively dispersing arthropod

Fitness maximization by dispersal: evidence from an invasion experiment

Antagonistic interactions between above- and belowground biota reduce their negative effects on a tree species

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