scholarly journals Digest: Evolutionary rescue following the introduction of a pathogen *

Evolution ◽  
2021 ◽  
Author(s):  
Thomas G. Aubier ◽  
Laure Olazcuaga
Keyword(s):  
Evolutionary Rescue

scholarly journals The Population Genetics of Evolutionary Rescue in Diploids: X Chromosomal versus Autosomal Rescue

2020 ◽  
Vol 195 (3) ◽  
pp. 561-568
Author(s):  
Robert L. Unckless ◽  
H. Allen Orr
Keyword(s):  
Population Genetics ◽  
Evolutionary Rescue

scholarly journals A sink host allows a specialist herbivore to persist in a seasonal source

2021 ◽  
Vol 288 (1958) ◽  
pp. 20211604
Author(s):  
Alicja Laska ◽  
Sara Magalhães ◽  
Mariusz Lewandowski ◽  
Ewa Puchalska ◽  
Kamila Karpicka-Ignatowska ◽  
...  
Keyword(s):  
Experimental Evolution ◽  
Laboratory Experiments ◽  
Field Observations ◽  
Stepping Stones ◽  
Specialist Herbivore ◽  
Negative Growth Rate ◽  
Evolutionary Rescue ◽  
Main Host ◽  
Negative Growth

In seasonal environments, sinks that are more persistent than sources may serve as temporal stepping stones for specialists. However, this possibility has to our knowledge, not been demonstrated to date, as such environments are thought to select for generalists, and the role of sinks, both in the field and in the laboratory, is difficult to document. Here, we used laboratory experiments to show that herbivorous arthropods associated with seasonally absent main (source) habitats can endure on a suboptimal (sink) host for several generations, albeit with a negative growth rate. Additionally, they dispersed towards this host less often than towards the main host and accepted it less often than the main host. Finally, repeated experimental evolution attempts revealed no adaptation to the suboptimal host. Nevertheless, field observations showed that arthropods are found in suboptimal habitats when the main habitat is unavailable. Together, these results show that evolutionary rescue in the suboptimal habitat is not possible. Instead, the sink habitat functions as a temporal stepping stone, allowing for the persistence of a specialist when the source habitat is gone.

scholarly journals Winter color polymorphisms identify global hot spots for evolutionary rescue from climate change

Science ◽  
2018 ◽  
Vol 359 (6379) ◽  
pp. 1033-1036 ◽  
Author(s):  
L. Scott Mills ◽  
Eugenia V. Bragina ◽  
Alexander V. Kumar ◽  
Marketa Zimova ◽  
Diana J. R. Lafferty ◽  
...  
Keyword(s):  
Climate Change ◽  
Hot Spots ◽  
Evolutionary Rescue

scholarly journals Considering adaptive genetic variation in climate change vulnerability assessment reduces species range loss projections

2019 ◽  
Vol 116 (21) ◽  
pp. 10418-10423 ◽  
Author(s):  
Orly Razgour ◽  
Brenna Forester ◽  
John B. Taggart ◽  
Michaël Bekaert ◽  
Javier Juste ◽  
...  
Keyword(s):  
Climate Change ◽  
Genetic Variation ◽  
Environmental Changes ◽  
Landscape Connectivity ◽  
Future Climate ◽  
Future Climate Change ◽  
Adaptive Genetic Variation ◽  
Climate Change Vulnerability ◽  
Species Vulnerability ◽  
Evolutionary Rescue

Local adaptations can determine the potential of populations to respond to environmental changes, yet adaptive genetic variation is commonly ignored in models forecasting species vulnerability and biogeographical shifts under future climate change. Here we integrate genomic and ecological modeling approaches to identify genetic adaptations associated with climate in two cryptic forest bats. We then incorporate this information directly into forecasts of range changes under future climate change and assessment of population persistence through the spread of climate-adaptive genetic variation (evolutionary rescue potential). Considering climate-adaptive potential reduced range loss projections, suggesting that failure to account for intraspecific variability can result in overestimation of future losses. On the other hand, range overlap between species was projected to increase, indicating that interspecific competition is likely to play an important role in limiting species’ future ranges. We show that although evolutionary rescue is possible, it depends on a population’s adaptive capacity and connectivity. Hence, we stress the importance of incorporating genomic data and landscape connectivity in climate change vulnerability assessments and conservation management.

scholarly journals Optimal investment to enable evolutionary rescue

2019 ◽  
Vol 12 (2) ◽  
pp. 165-177 ◽  
Author(s):  
Jaime Ashander ◽  
Lisa C. Thompson ◽  
James N. Sanchirico ◽  
Marissa L. Baskett
Keyword(s):  
Optimal Investment ◽  
Evolutionary Rescue

scholarly journals Evolutionary rescue in a changing world

2014 ◽  
Vol 29 (9) ◽  
pp. 521-530 ◽  
Author(s):  
Stephanie M. Carlson ◽  
Curry J. Cunningham ◽  
Peter A.H. Westley
Keyword(s):  
Evolutionary Rescue ◽  
Changing World

Evolutionary Rescue in Structured Populations

2014 ◽  
Vol 183 (1) ◽  
pp. E17-E35 ◽  
Author(s):  
Hildegard Uecker ◽  
Sarah P. Otto ◽  
Joachim Hermisson
Keyword(s):  
Structured Populations ◽  
Evolutionary Rescue

scholarly journals Evolutionary rescue and the coexistence of generalist and specialist competitors: an experimental test

2015 ◽  
Vol 282 (1821) ◽  
pp. 20151932 ◽  
Author(s):  
Lisa M. Bono ◽  
Catharine L. Gensel ◽  
David W. Pfennig ◽  
Christina L. Burch
Keyword(s):  
Resource Use ◽  
Competitive Exclusion ◽  
Critical Role ◽  
The Novel ◽  
Sufficient Time ◽  
Adaptive Diversification ◽  
Evolutionary Rescue ◽  
Novel Host ◽  
Key Driver ◽  
Competition For Resources

Competition for resources is thought to play a critical role in both the origins and maintenance of biodiversity. Although numerous laboratory evolution experiments have confirmed that competition can be a key driver of adaptive diversification, few have demonstrated its role in the maintenance of the resulting diversity. We investigate the conditions that favour the origin and maintenance of alternative generalist and specialist resource-use phenotypes within the same population. Previously, we confirmed that competition for hosts among φ 6 bacteriophage in a mixed novel (non-permissive) and ancestral (permissive) host microcosm triggered the evolution of a generalist phenotype capable of infecting both hosts. However, because the newly evolved generalists tended to competitively exclude the ancestral specialists, coexistence between the two phenotypes was rare. Here, we show that reducing the relative abundance of the novel host slowed the increase in frequency of the generalist phenotype, allowing sufficient time for the specialist to further adapt to the ancestral host. This adaptation resulted in ‘evolutionary rescue’ of the specialists, preventing their competitive exclusion by the generalists. Thus, our results suggest that competition promotes both the origin and maintenance of biodiversity when it is strong enough to favour a novel resource-use phenotype, but weak enough to allow adaptation of both the novel and ancestral phenotypes to their respective niches.

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