Eco-Evolutionary Dynamics

Cameron, Tom C.; Plaistow, Stewart J.; Mugabo, Marianne; Piertney, Stuart B.; Benton, Tim G.

doi:10.1016/b978-0-12-801374-8.00005-0

Cited by 12 publications

(13 citation statements)

References 121 publications

(171 reference statements)

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“…As such, slowing down population growth by extending age at maturity (Cameron et al . ; Monro & Marshall ) and more male‐biased sex ratios (Johnson ; Zhurov et al . ) can be considered as an adaptive strategy under stable conditions and elevated resource competition.…”

Section: Discussionmentioning

confidence: 99%

“…Spider mites show scramble competition, with fast resource depletion when population sizes are high (Krips et al 1998). As such, slowing down population growth by extending age at maturity (Cameron et al 2014;Monro & Marshall 2014) and more male-biased sex ratios (Johnson 1988;Zhurov et al 2014) can be considered as an adaptive strategy under stable conditions and elevated resource competition. The significantly higher transcription in gene sets that code for glycoside hydrolases, enzymes which are crucial for the digestion of complex carbohydrates in an arthropod herbivore's diet and consequently a higher feeding efficiency (Terra & Ferreira 1994), can be regarded as a consequence of mite adaptation to the stable conditions and the resulting elevated resource competition.…”

Section: Discussionmentioning

confidence: 99%

“…With increasing asymmetry in patch size, however, dispersal will evolve to lower rates because benefits of dispersal are only prevalent for a minority of the individuals (Travis & Dytham 1999). Additional and/or alternative adaptive strategies might also evolve through the adjustment of sex ratio (Macke et al 2011), age at death (Dytham & Travis 2006) and density dependency (Bierbaum, Mueller & Ayala 1989) according to changes in spatial structure and associated variation in the prevalence and strength of local resource competition (Clark 1978;Cameron et al 2013Cameron et al , 2014 and other stressors (Margulis & Sagan 2000;Parsons 2005).…”

Section: Introductionmentioning

confidence: 99%

“…), age at death (Dytham & Travis ) and density dependency (Bierbaum, Mueller & Ayala ) according to changes in spatial structure and associated variation in the prevalence and strength of local resource competition (Clark ; Cameron et al . , ) and other stressors (Margulis & Sagan ; Parsons ).…”

Section: Introductionmentioning

confidence: 99%

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Life‐history evolution in response to changes in metapopulation structure in an arthropod herbivore

et al. 2016

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International audienceThe persistence and dynamics of populations largely depend on the way they are configured and integrated into space and the ensuing eco-evolutionary dynamics. * We manipulated spatial and temporal variation in patch size in replicated experimental metapopulations of the herbivore mite Tetranychus urticae and followed evolutionary dynamics over approximately 30 generations. * A significant divergence in life-history traits, physiological endpoints and gene expression was recorded in the spatially and spatiotemporally variable metapopulation, but also a remarkable convergence relative to the stable reference metapopulation in traits related to size and fecundity and in its transcriptional regulation. * The observed evolutionary dynamics are tightly linked to demographic changes, more specifically frequent episodes of resource shortage that increased the reproductive performance of mites on tomato, a challenging host plant. This points towards a general, adaptive stress response in stable spatial variable and spatiotemporal variable metapopulations that pre-adapts a herbivore arthropod to novel environmental stressor

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Life‐history evolution in response to changes in metapopulation structure in an arthropod herbivore

et al. 2016

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show abstract

“…With increasing asymmetry in patch size, however, dispersal will evolve to lower rates because benefits of dispersal are only prevalent for a minority of the individuals (Travis & Dytham 1999). Additional and/or alternative adaptive strategies might also evolve through the adjustment of sex-ratio (Macke et al 2011), age-at-death (Dytham & Travis 2006) and density-dependency (Bierbaum, Mueller & Ayala 1989) according to changes in spatial structure and associated variation in the prevalence and strength of local resource competition (Clark 1978; Cameron et al 2013, 2014) and other stressors (Margulis & Sagan 2000; Parsons 2005).…”

Section: Introductionmentioning

confidence: 99%

Life history evolution in response to changes in metapopulation structure in an arthropod herbivore

Roissart

Wybouw

Renault

et al. 2015

Preprint

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The persistence and dynamics of populations largely depends on the way they are configured and integrated into space and the ensuing eco-evolutionary dynamics. We manipulated spatial and temporal variation in patch size in replicated experimental metapopulations of the herbivore mite Tetranychus urticae. Evolution over approximately 30 generations in the spatially and spatiotemporally variable metapopulations induced a significant divergence in life history traits, physiological endpoints and gene expression, but also a remarkable convergence relative to the stable reference patchy metapopulation in traits related to size and fecundity and in its transcriptional regulation. The observed evolutionary dynamics are tightly linked to demographic changes, more specifically frequent episodes of resource shortage, and increased the reproductive performance of mites on tomato, a challenging host plant. This points towards a general, adaptive stress response in stable spatial variable and spatiotemporal variable metapopulations that pre-adapts a herbivore arthropod to novel environmental stressors.

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Harvested populations are more variable only in more variable environments

Cameron

O’Sullivan

Reynolds

et al. 2016

Ecology and Evolution

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The interaction between environmental variation and population dynamics is of major importance, particularly for managed and economically important species, and especially given contemporary changes in climate variability. Recent analyses of exploited animal populations contested whether exploitation or environmental variation has the greatest influence on the stability of population dynamics, with consequences for variation in yield and extinction risk. Theoretical studies however have shown that harvesting can increase or decrease population variability depending on environmental variation, and requested controlled empirical studies to test predictions. Here, we use an invertebrate model species in experimental microcosms to explore the interaction between selective harvesting and environmental variation in food availability in affecting the variability of stage‐structured animal populations over 20 generations. In a constant food environment, harvesting adults had negligible impact on population variability or population size, but in the variable food environments, harvesting adults increased population variability and reduced its size. The impact of harvesting on population variability differed between proportional and threshold harvesting, between randomly and periodically varying environments, and at different points of the time series. Our study suggests that predicting the responses to selective harvesting is sensitive to the demographic structures and processes that emerge in environments with different patterns of environmental variation.

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Eco-Evolutionary Dynamics

Cited by 12 publications

References 121 publications

Life‐history evolution in response to changes in metapopulation structure in an arthropod herbivore

Life‐history evolution in response to changes in metapopulation structure in an arthropod herbivore

Life history evolution in response to changes in metapopulation structure in an arthropod herbivore

Harvested populations are more variable only in more variable environments

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