Show simple item record Hufbauer, Ruth A. Szűcs, Marianna Kasyon, Emily Youngberg, Courtney Koontz, Michael J. Richards, Christopher M. Tuff, Ty Melbourne, Brett A. 2015-08-04T21:00:11Z 2015-08-04T21:00:11Z 2015-08-03
dc.identifier doi:10.5061/dryad.p96b7
dc.identifier.citation Hufbauer RA, Szűcs M, Kasyon E, Youngberg C, Koontz MJ, Richards CM, Tuff T, Melbourne BA (2015) Three types of rescue can avert extinction in a changing environment. Proceedings of the National Academy of Sciences of the United States of America 112(33): 10557–10562.
dc.description Setting aside high-quality large areas of habitat to protect threatened populations is becoming increasingly difficult as humans fragment and degrade the environment. Biologists and managers therefore must determine the best way to shepherd small populations through the dual challenges of reductions in both the number of individuals and genetic variability. By bringing in additional individuals, threatened populations can be increased in size (demographic rescue) or provided with variation to facilitate adaptation and reduce inbreeding (genetic rescue). The relative strengths of demographic and genetic rescue for reducing extinction and increasing growth of threatened populations are untested, and which type of rescue is effective may vary with population size. Using the flour beetle (Tribolium castaneum) in a microcosm experiment, we disentangled the genetic and demographic components of rescue, and compared them with adaptation from standing genetic variation (evolutionary rescue in the strictest sense) using 244 experimental populations founded at either a smaller (50 individuals) or larger (150 individuals) size. Both types of rescue reduced extinction, and those effects were additive. Over the course of six generations, genetic rescue increased population sizes and intrinsic fitness substantially. Both large and small populations showed evidence of being able to adapt from standing genetic variation. Our results support the practice of genetic rescue in facilitating adaptation and reducing inbreeding depression, and suggest that demographic rescue alone may suffice in larger populations even if only moderately inbred individuals are available for addition.
dc.relation.haspart doi:10.5061/dryad.p96b7/1
dc.relation.isreferencedby doi:10.1073/pnas.1504732112
dc.relation.isreferencedby PMID:26240320
dc.subject genetic rescue
dc.subject migration
dc.subject adaptation
dc.subject extinction
dc.subject evolutionary rescue
dc.subject demographic rescue
dc.title Data from: Three types of rescue can avert extinction in a changing environment
dc.type Article
dwc.ScientificName Tribolium castaneum
prism.publicationName Proceedings of the National Academy of Sciences of the United States of America

Files in this package

Content in the Dryad Digital Repository is offered "as is." By downloading files, you agree to the Dryad Terms of Service. To the extent possible under law, the authors have waived all copyright and related or neighboring rights to this data. CC0 (opens a new window) Open Data (opens a new window)

Title spreadsheet with census data through time collected on experimental popluations
Downloaded 37 times
Description Column are as follows:Block temporal block Pop ID unique population ID code Size founding size (small = 50, large = 150) Demographic demographic rescue treatment (1 if implemented, else 0) Genetic genetic rescue treatment (1 if implemented, else 0) F0 founding population size F1 census time 1 F2 census time 2 F2rescue census time 2 plus rescue individuals F3 census time 3 F4 census time 4 F5 census time 5 no_boxes_F5 number of boxes 5th generation density_per_box_F5 F5/no_boxes_F5 F6 census time 6 perlight percent individuals in selected population that had the red (genetic rescue) phenotype Extant whether a population is extant Extinct whether a population went extinct PseudoExtinct extinction plus pseudoextinction (<3 individuals at time 6)
Download Rescue_Master_Data_Hufbauer_etal.xlsx (59.64 Kb)
Details View File Details

Search for data

Be part of Dryad

We encourage organizations to: