Keyword search (3,448 papers available)


Evaluating the correlation between genome-wide diversity and the release of plastic phenotypic variation in experimental translocations to novel natural environments.

Author(s): Yates MC, Fraser DJ

Phenotypic reaction norms are often shaped and constrained by selection and are important for allowing organisms to respond to environmental change. However, selection cannot constrain reaction norms for environmental conditions that populations have not ex...

Article GUID: 33274531
Size reductions and genomic changes within two generations in wild walleye populations: associated with harvest?

Author(s): Bowles E, Marin K, Mogensen S, MacLeod P, Fraser DJ

Evol Appl. 2020 Jul;13(6):1128-1144 Authors: Bowles E, Marin K, Mogensen S, MacLeod P, Fraser DJ

Article GUID: 32684951
The relationship between eDNA particle concentration and organism abundance in nature is strengthened by allometric scaling.

Author(s): Yates MC, Glaser D, Post J, Cristescu ME, Fraser DJ, Derry AM

Mol Ecol. 2020 Jul 07;: Authors: Yates MC, Glaser D, Post J, Cristescu ME, Fraser DJ, Derry AM

Article GUID: 32638451
Small population size and low genomic diversity have no effect on fitness in experimental translocations of a wild fish.

Author(s): Yates MC, Bowles E, Fraser DJ

Proc Biol Sci. 2019 Dec 04;286(1916):20191989 Authors: Yates MC, Bowles E, Fraser DJ

Article GUID: 31771476
Population variation in density-dependent growth, mortality and their trade-off in a stream fish.

Author(s): Matte JM, Fraser DJ, Grant JWA

J Anim Ecol. 2019 Oct 23;: Authors: Matte JM, Fraser DJ, Grant JWA

Article GUID: 31642512
Causes of maladaptation.

Author(s): Brady SP, Bolnick DI, Angert AL, Gonzalez A, Barrett RDH, Crispo E, Derry AM, Eckert CG, Fraser DJ, Fussmann GF, Guichard F, Lamy T, McAdam ...

Evol Appl. 2019 Aug;12(7):1229-1242 Authors: Brady SP, Bolnick DI, Angert AL, Gonzalez A, Barrett RDH, Crispo E, Derry AM, Eckert CG, Fraser DJ, Fussmann GF, Guichard F, Lamy T, McAdam AG, Newman ...

Article GUID: 31417611
Conservation through the lens of (mal)adaptation: Concepts and meta-analysis.

Author(s): Derry AM, Fraser DJ, Brady SP, Astorg L, Lawrence ER, Martin GK, Matte JM, Negrín Dastis JO, Paccard A, Barrett RDH, Chapman LJ, Lane JE, Ba...

Evol Appl. 2019 Aug;12(7):1287-1304 Authors: Derry AM, Fraser DJ, Brady SP, Astorg L, Lawrence ER, Martin GK, Matte JM, Negrín Dastis JO, Paccard A, Barrett RDH, Chapman LJ, Lane JE, Ballas C...

Article GUID: 31417615
A critical assessment of estimating census population size from genetic population size (or vice versa) in three fishes.

Author(s): Yates MC, Bernos TA, Fraser DJ

Evol Appl. 2017 10;10(9):935-945 Authors: Yates MC, Bernos TA, Fraser DJ

Article GUID: 29151884
Genetic diversity of small populations: Not always "doom and gloom"?

Author(s): Fraser DJ

Mol Ecol. 2017 12;26(23):6499-6501 Authors: Fraser DJ

Article GUID: 29243868
Evaluating a 5-year metal contamination remediation and the biomonitoring potential of a freshwater gastropod along the Xiangjiang River, China.

Author(s): Li D, Pi J, Zhang T, Tan X, Fraser DJ

Environ Sci Pollut Res Int. 2018 Jul;25(21):21127-21137 Authors: Li D, Pi J, Zhang T, Tan X, Fraser DJ

Article GUID: 29770938
Geo-referenced population-specific microsatellite data across American continents, the MacroPopGen Database.

Author(s): Lawrence ER, Benavente JN, Matte JM, Marin K, Wells ZRR, Bernos TA, Krasteva N, Habrich A, Nessel GA, Koumrouyan RA, Fraser DJ

Sci Data. 2019 04 03;6(1):14 Authors: Lawrence ER, Benavente JN, Matte JM, Marin K, Wells ZRR, Bernos TA, Krasteva N, Habrich A, Nessel GA, Koumrouyan RA, Fraser DJ

Article GUID: 30944329
Title:Size reductions and genomic changes within two generations in wild walleye populations: associated with harvest?
Authors:Bowles E,  Marin K,  Mogensen S,  MacLeod P,  Fraser DJ
Link:https://www.ncbi.nlm.nih.gov/pubmed/32684951
DOI:10.1111/eva.12987
Category:Evol Appl
PMID:32684951
Dept Affiliation: CONCORDIA
1 Concordia University Montreal QC Canada.
2 Golder Associates Montréal QC Canada.
3 University of Calgary Calgary AB Canada.
4 Cree Nation of Mistissini Mistissini QC Canada.

Description:

Size reductions and genomic changes within two generations in wild walleye populations: associated with harvest?

Evol Appl. 2020 Jul;13(6):1128-1144

Authors: Bowles E, Marin K, Mogensen S, MacLeod P, Fraser DJ

Abstract

The extent and rate of harvest-induced genetic changes in natural populations may impact population productivity, recovery, and persistence. While there is substantial evidence for phenotypic changes in harvested fishes, knowledge of genetic change in the wild remains limited, as phenotypic and genetic data are seldom considered in tandem, and the number of generations needed for genetic changes to occur is not well understood. We quantified changes in size-at-age, sex-specific changes in body size, and genomic metrics in three harvested walleye (Sander vitreus) populations and a fourth reference population with low harvest levels over a 15-year period in Mistassini Lake, Quebec. We also collected Indigenous knowledge (IK) surrounding concerns about these populations over time. Using ~9,000 SNPs, genomic metrics included changes in population structure, neutral genomic diversity, effective population size, and signatures of selection. Indigenous knowledge revealed overall reductions in body size and number of fish caught. Smaller body size, a small reduction in size-at-age, nascent changes to population structure (population differentiation within one river and homogenization between two others), and signatures of selection between historical and contemporary samples reflected coupled phenotypic and genomic change in the three harvested populations in both sexes, while no change occurred in the reference population. Sex-specific analyses revealed differences in both body size and genomic metrics but were inconclusive about whether one sex was disproportionately affected. Although alternative explanations cannot be ruled out, our collective results are consistent with the hypothesis that genetic changes associated with harvesting may arise within 1-2.5 generations in long-lived wild fishes. This study thus demonstrates the need to investigate concerns about harvest-induced evolution quickly once they have been raised.

PMID: 32684951 [PubMed]