Phenotypic specialization of the pea aphid in its southern limit of distribution

Martel, Sebastián I.; Zamora, Cristián A.; Behrens, Camilo A.; Rezende, Enrico L.; Bozinovic, Francisco

doi:10.1016/j.cbpa.2023.111388

Cited by 1 publication

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References 66 publications

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“…R 0 and t were recorded individually for the maximum number of survivors after the trials for each MLG and heat challenge combination. To summarize, five experimental treatments were used: three constant acclimation temperatures (15, 20 and 25°C) and two heat-shock temperatures (38 and 42°C), totaling 154 individual measures of r m , a consistent number given the clonal nature of these aphid lineages (see [56]).…”

Section: (C) Temperature and Heat-shock Effects On Life-history Traitsmentioning

confidence: 99%

Rapid turnover of a pea aphid superclone mediated by thermal endurance in central Chile

Martel,

Zamora,

Ricote

et al. 2024

Proc. R. Soc. B.

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Global change drivers are imposing novel conditions on Earth's ecosystems at an unprecedented rate. Among them, biological invasions and climate change are of critical concern. It is generally thought that strictly asexual populations will be more susceptible to rapid environmental alterations due to their lack of genetic variability and, thus, of adaptive responses. In this study, we evaluated the persistence of a widely distributed asexual lineage of the alfalfa race of the pea aphid, Acyrthosiphon pisum, along a latitudinal transect of approximately 600 km in central Chile after facing environmental change for a decade. Based on microsatellite markers, we found an almost total replacement of the original aphid superclone by a new variant. Considering the unprecedented warming that this region has experienced in recent years, we experimentally evaluated the reproductive performance of these two A. pisum lineages at different thermal regimes. The new variant exhibits higher rates of population increase at warmer temperatures, and computer simulations employing a representative temperature dataset suggest that it might competitively displace the original superclone. These results support the idea of a superclone turnover mediated by differential reproductive performance under changing temperatures.

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Section: (C) Temperature and Heat-shock Effects On Life-history Traitsmentioning

confidence: 99%

Rapid turnover of a pea aphid superclone mediated by thermal endurance in central Chile

Martel,

Zamora,

Ricote

et al. 2024

Proc. R. Soc. B.

Self Cite

View full text Add to dashboard Cite

show abstract

Phenotypic specialization of the pea aphid in its southern limit of distribution

Cited by 1 publication

References 66 publications

Rapid turnover of a pea aphid superclone mediated by thermal endurance in central Chile

Rapid turnover of a pea aphid superclone mediated by thermal endurance in central Chile

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