Dylan Fraser

Associate Professor,
Concordia University

Department of Biology
E-mail: dylan.fraser@concordia.ca
Institution page
Personal page


  • Bachelor of Science: Fisheries Biology - 2000, U. de Guelph, Canada
  • PhD in Natural Sciences: Evolutionary biology, molecular ecology - 2005, U.Laval, Canada
  • NSERC Postdoctoral Fellowship: Conservation biology - 2007, U. Dalhousie, Canada
  • Postdoctoral Fellowship: Conservation biology-2009, U. Dalhousie, Canada


Our laboratory seeks to understand how ecology, evolution and genetics interact to generate and sustain biodiversity, how human activities alter this diversity, and how this collective knowledge can be applied towards more effective biodiversity conservation in a variety of contexts. To date, this research has involved a combination of field, laboratory and molecular studies on fishes, as well as data synthesis using meta-analysis.

QCBS students

Hyung-Bae Jeon

Postdoctoral fellow
(Start: 2018, End: 2020)
Other QCBS (co-)supervisor: Pedro Peres-Neto
genomic signature of fisheries-induced evolution
Link to thesis (pdf)
Personal page

Andrew Harbicht

(Start: 2013)
Other QCBS (co-)supervisor: James Grant
Eco-evolutionary applications to species restoration: Atlantic salmon in Lake Champlain

Mélia Lagacé

(Start: 2018, End: 2022)
Other QCBS (co-)supervisor: Alison Derry
Ecosystem consequences of fisheries-induced evolution in alpine lakes

Elizabeth Lawrence

(Start: 2014, End: 2019)
Patterns of North American vertebrate population diversity

Jean-Michel Matte

(Start: 2015, End: 2020)
Other QCBS (co-)supervisor: James Grant
The role of density-dependence in the regulation of brook trout populations
Personal page

Richelle Smith

(Start: 2018)
Genome-wide variation among vertebrate populations
Personal page

Previous students (since 2009)

Ella Bowles

Postdoctoral fellow
(Start: 2016, End: 2017)
Genomics in conservation and fisheries management of freshwater fishes
Personal page

Paul Debes

Postdoctoral fellow
(Start: 2014, End: 2015)
Effects of inter-population hybridization spanning a large geographic scale in Atlantic salmon

Jacquelyn Wood

(Start: 2009, End: 2014)
Relationships between population size and evolutionary potential in brook trout

Matthew Yates

(Start: 2011, End: 2017)
Identifying correlates of adaptability in natural populations

Defne Tezel

(Start: 2012, End: 2013)
Heritability of behaviour in nine trout populations

Sebastian Belmar-Lucero

(Start: 2010, End: 2011)
Population genetic structure of brook trout

Thais Bernos

(Start: 2012, End: 2015)
The relationship between population size, number of breeders and the environment in brook trout

Eric Brunsdon

(Start: 2013, End: 2015)
Other QCBS (co-)supervisor: James Grant
The effects of habitat quality and density on the growth and survival of juvenile Atlantic salmon (Salmo salar): Application to population restoration.

Andrew Harbicht

(Start: 2010, End: 2012)
Ecological correlates and long-term consequences of hatchery-wild hybridization

Aimee Houde

(Start: 2007, End: 2009)
Inbreeding and outbreeding depression in endangered salmon rehabilitation programs

Sk Shahinur Islam

(Start: 2015, End: 2015)
A test of genetic adaptation to captivity in diet after one generation

Kia Marin

(Start: 2013, End: 2015)
‘Lakescape’ population differentiation of lake trout (Salvelinus namaycush) in Mistassini Lake, QC

Ashlee Prevost

(Start: 2016, End: 2018)
Other QCBS (co-)supervisor: James Grant
The influence of reproductive success on recolonization of Atlantic salmon in two tributaries of Lake Champlain

Zachery Wells

(Start: 2014, End: 2016)
Investigating the effects of population size, divergence, and stress on outbreeding in fragmented populations of Salvelinus fontinalis

Carol Zastavniouk

(Start: 2014, End: 2016)
How habitat fragmentation affects reproductive trait characteristics in brook trout (Salvelinus fontinalis)
Personal page

Tom Burdon

(Start: 2012, End: 2013)
Fine scale phylogeography of trout populations

Examples of species studied

Alces alces
Salvelinus fontinalis
Salmo salar
Salvelinus namaycush


65- Evaluating a 5-year metal contamination remediation and the biomonitoring potential of a freshwater gastropod along the Xiangjiang River, China
Li D , , Pi J , , Zhang T , , Tan X , , Fraser D J ,
2018 Environmental Science and Pollution Research (Date Added: 2018-07-02)

64- Environmental, anthropogenic, and dietary influences on fine scale movement patterns of Atlantic salmon through challenging waters
Harbicht, AB, Castro-Santos, T, Gorsky, D, Hand, DM, Fraser, DJ, Ardren, WR
2018 Canadian Journal of Fisheries and Aquatic Sciences (Date Added: 2018-05-14)

63- A fish-mediated trophic cascade on freshwater calanoid copepod abundance is concealed by food web fatty acid availability, functional traits and population sex ratio
Negrín Dastis J O , , Yates M C , , Fraser D J , , Derry A M ,
2018 Journal of Plankton Research (Date Added: 2018-05-03)

62- Genetic diversity of small populations: Not always “doom and gloom”?
Fraser D J ,
2017 Molecular Ecology (Date Added: 2017-12-26)

61- Dispersal and density-dependent growth of Atlantic salmon (Salmo salar) juveniles: Clumped versus dispersed stocking
Brunsdon E B , , Fraser D J , , Ardren W R , , Grant J W A ,
2017 Canadian Journal of Fisheries and Aquatic Sciences (Date Added: 2017-10-20)

60- The evolutionary consequences of habitat fragmentation: Body morphology and coloration differentiation among brook trout populations of varying size
Zastavniouk C , , Weir L K , , Fraser D J ,
2017 Ecology and Evolution (Date Added: 2017-08-07)

59- Fine-scale differences in genetic and census population size ratios between two stream fishes
Bernos T A , , Yates M C , , Fraser D J ,
2017 Conservation Genetics (Date Added: 2017-08-02)

58- Traditional ecological knowledge reveals the extent of sympatric lake trout diversity and habitat preferences
Marin K , , Coon A , , Fraser D J ,
2017 Ecology and Society (Date Added: 2017-07-22)

57- A critical assessment of estimating census population size from genetic population size (or vice versa) in three fishes
Yates M C , , Bernos T A , , Fraser D J ,
2017 Evolutionary Applications (Date Added: 2017-07-22)

56- Novel, continuous monitoring of fine-scale movement using fixed-position radiotelemetry arrays and random forest location fingerprinting
Harbicht A B , , Castro-Santos T , , Ardren W R , , Gorsky D , , Fraser D J ,
2017 Methods in Ecology and Evolution (Date Added: 2017-03-25)

55-Risks and benefits of mitigating low marine survival in wild salmon using smolt-to-adult captive-reared supplementation
Fraser D J ,
2016 DFO Canadian Science Advisory Secretariat ( Date Added: 2018-05-14)

54- Limited variability in upper thermal tolerance among pure and hybrid populations of a cold-water fish
Wells, ZRR, McDonnell, LH, Chapman, LJ, Fraser, DJ
2016 Conservation Physiology (Date Added: 2018-05-10)

53- Lifelong and carry-over effects of early captive exposure in a recovery program for Atlantic salmon (Salmo salar)
Clarke C N , , Fraser D J , , Purchase C F ,
2016 Animal Conservation (Date Added: 2017-11-30)

52- Striking Phenotypic Variation yet Low Genetic Differentiation in Sympatric Lake Trout (Salvelinus namaycush)
Marin, K, Coon, A, Carson, R, Debes, PV, Fraser, DJ
2016 PloS one (Date Added: 2016-11-04)

50- Are heritability and selection related to population size in nature? Meta-analysis and conservation implications
Wood, JLA, Yates, MC, Fraser, DJ
2016 Evolutionary Applications (Date Added: 2016-05-03)

49- The influence of hybridization with domesticated conspecifics on alternative reproductive phenotypes in male Atlantic salmon in multiple temperature regimes
Yates, MC, Debes, PV, Fraser, DJ, Hutchings, JA, Taylor, E
2015 Canadian Journal of Fisheries and Aquatic Sciences (Date Added: 2016-01-14)

48- Anthropogenic and habitat correlates of hybridization between hatchery and wild brook trout
Harbicht AB, MAS
2014 Canadian Journal of Fisheries and Aquatic Sciences (Date Added: 2016-06-14)

45- Does source population size affect performance in new environments?
Yates, M
2014 Evolutionary Applications (Date Added: 2016-06-14)

44- Does human-induced hybridization have long-term genetic effects? Empirical testing with domesticated, wild and hybridized fish populations
Harbicht, A, Wilson, CC, Fraser, DJ
2014 Evolutionary Applications (Date Added: 2014-12-16)

43- Erratum to: Ecological and evolutionary patterns of freshwater maturation in Pacific and Atlantic salmonines
Sloat, MR, Fraser, DJ, Dunham, JB, Falke, JA, Jordan, CE, McMillan, JR, Ohms, HA
2014 Reviews in Fish Biology and Fisheries (Date Added: 2014-08-27)

42- Ecological and evolutionary patterns of freshwater maturation in Pacific and Atlantic salmonines
Sloat, MR, Fraser, DJ, Dunham, JB, Falke, JA, Jordan, CE, McMillan, JR, Ohms, HA
2014 Reviews in Fish Biology and Fisheries (Date Added: 2014-08-27)

41- Population size, habitat fragmentation, and the nature of adaptive variation in a stream fish
Fraser, DJ, Debes, PV, Bernatchez, L, Hutchings, JA
2014 Proceedings of the Royal Society B: Biological Sciences (Date Added: 2014-08-18)

40- The Between-Population Genetic Architecture of Growth, Maturation, and Plasticity in Atlantic Salmon
Debes, PV, Fraser, DJ, Yates, M, Hutchings, JA
2014 Genetics (Date Added: 2014-06-12)

39- The emerging synthesis of evolution with ecology in fisheries science
Fraser, DJ
2013 Canadian Journal of Fisheries and Aquatic Sciences (Date Added: 2016-06-14)

38- Relationships of habitat variability to population size in a stream fish
Wood, JLA, Belmar-Lucero, S, Hutchings, JA, Fraser, DJ
2013 Ecological Applications (Date Added: 2013-11-28)

37- Multigenerational hybridisation and its consequences for maternal effects in Atlantic salmon
Debes, PV, Fraser, DJ, McBride, MC, Hutchings, JA
2013 Heredity (Date Added: 2013-11-28)

36- Multidisciplinary population monitoring when demographic data are sparse: a case study of remote trout populations
Fraser, DJ, Calvert, AM, Bernatchez, L, Coon, A
2013 Ecology and Evolution (Date Added: 2013-11-28)

35- Kinship analysis of brook trout Salvelinus fontinalis during their breeding migration
Meli, A, Fraser, DJ
2013 Journal of Fish Biology (Date Added: 2013-11-28)

34- Puny males punch above their weight to preserve genetic diversity in a declining Atlantic salmon population
Moore, J-, Fraser, DJ
2013 Molecular Ecology (Date Added: 2013-05-06)

33- Differences in transcription levels among wild, domesticated, and hybrid Atlantic salmon (Salmo salar) from two environments
Debes, PV, Normandeau, E, Fraser, DJ, Bernatchez, L, Hutchings, JA
2012 Molecular Ecology (Date Added: 2012-10-31)

32- Effective/census population size ratio estimation: a compendium and appraisal
Palstra, FP, Fraser, DJ
2012 Ecology and Evolution (Date Added: 2012-10-09)

31- Concurrent habitat and life history influences on effective/census population size ratios in stream-dwelling trout
Belmar-Lucero, S, Wood, JLA, Scott, S, Harbicht, AB, Hutchings, JA, Fraser, DJ
2012 Ecology and Evolution (Date Added: 2012-10-09)

30- Relative risks of inbreeding and outbreeding depression in the wild in endangered salmon
Houde, ALS, Fraser, DJ, O'Reilly, P, Hutchings, JA
2011 Evolutionary Applications (Date Added: 2012-10-04)

29- Hybridization effects on phenotypic plasticity: Experimental compensatory growth in farmed-wild Atlantic salmon
Morris, MRJ, Fraser, DJ, Eddington, J, Hutchings, JA
2011 Evolutionary Applications (Date Added: 2012-10-04)

28- Extent and scale of local adaptation in salmonid fishes: Review and meta-analysis
Fraser, DJ, Weir, LK, Bernatchez, L, Hansen, MM, Taylor, EB
2011 Heredity (Date Added: 2012-10-04)

27- Maternal and paternal effects on fitness correlates in outbred and inbred Atlantic salmon (Salmo salar)
Houde, ALS, Fraser, DJ, O'Reilly, P, Hutchings, JA
2011 Canadian Journal of Fisheries and Aquatic Sciences (Date Added: 2012-10-04)

26- Consequences of farmed-wild hybridization across divergent wild populations and multiple traits in salmon
Fraser, DJ, Houde, ALS, Debes, PV, O'Reilly, P, Eddington, JD, Hutchings, JA
2010 Ecological Applications (Date Added: 2012-10-04)

24- Potential for domesticated-wild interbreeding to induce maladaptive phenology across multiple populations of wild Atlantic salmon (Salmo salar)
Fraser, DJ, Minto, C, Calvert, AM, Eddington, JD, Hutchings, JA
2010 Canadian Journal of Fisheries and Aquatic Sciences (Date Added: 2012-10-04)

23- Reduced anti-predator responses in multi-generational hybrids of farmed and wild Atlantic salmon (Salmo salar L.)
Houde, ALS, Fraser, DJ, Hutchings, JA
2010 Conservation Genetics (Date Added: 2012-10-04)

22- Sixty years of anthropogenic pressure: A spatio-temporal genetic analysis of brown trout populations subject to stocking and population declines
Hansen, MM, Fraser, DJ, Meier, K, Mensberg, K-D
2009 Molecular Ecology (Date Added: 2012-10-04)

21- Population-specific gene expression responses to hybridization between farm and wild Atlantic salmon
Normandeau, E, Hutchings, JA, Fraser, DJ, Bernatchez, L
2009 Evolutionary Applications (Date Added: 2012-10-04)

20- Mixed evidence for reduced local adaptation in wild salmon resulting from interbreeding with escaped farmed salmon: complexities in hybrid fitness
Fraser, DJ, Cook, AM, Eddington, JD, Bentzen, P, Hutchings, JA
2008 Evolutionary Applications (Date Added: 2012-10-09)

19- How well can captive breeding programs conserve biodiversity? A review of salmonids
Fraser, DJ
2008 Evolutionary Applications (Date Added: 2012-10-09)

18- Ecology, evolution, and conservation of lake-migratory brook trout: A perspective from pristine populations
Fraser, DJ, Bernatchez, L
2008 Transactions of the American Fisheries Society (Date Added: 2012-10-04)

17- The nature of fisheries- and farming-induced evolution
Hutchings, JA, Fraser, DJ
2008 Molecular Ecology (Date Added: 2012-10-04)

16- Prevalence and recurrence of escaped farmed Atlantic salmon (Salmo salar) in eastern North American rivers
Morris, MRJ, Fraser, DJ, Heggelin, AJ, Whoriskey, FG, Carr, JW, O'Neil, SF, Hutchings, JA
2008 Canadian Journal of Fisheries and Aquatic Sciences (Date Added: 2012-10-04)

14- Comparative estimation of effective population sizes and temporal gene flow in two contrasting population systems
Fraser, DJ, Hansen, MM, Østergaard, S, Tessier, N, Legault, M, Bernatchez, L
2007 Molecular Ecology (Date Added: 2012-10-04)

13- Loss of historical immigration and the unsuccessful rehabilitation of extirpated salmon populations
Fraser, DJ, Jones, MW, McParland, TL, Hutchings, JA
2007 Conservation Genetics (Date Added: 2012-10-04)

12- Divergent compensatory growth responses within species: Linked to contrasting migrations in salmon?
Fraser, DJ, Weir, LK, Darwish, TL, Eddington, JD, Hutchings, JA
2007 Oecologia (Date Added: 2012-10-04)

11- Adaptive migratory divergence among sympatric brook charr populations
Fraser, DJ, Bernatchez, L
2005 Evolution (Date Added: 2012-10-04)

10- Migratory charr schools exhibit population and kin associations beyond juvenile stages
Fraser, DJ, Duchesne, P, Bernatchez, L
2005 Molecular Ecology (Date Added: 2012-10-04)

9- Allopatric origins of sympatric brook charr populations: Colonization history and admixture
Fraser, DJ, Bernatchez, L
2005 Molecular Ecology (Date Added: 2012-10-04)

7- Mitochondrial DNA variation and stock structure of walleyes from eastern Lake Huron: An analysis of contemporary and historical samples
Gatt, MH, Fraser, DJ
2002 Transactions of the American Fisheries Society (Date Added: 2012-10-04)

6- Adaptive evolutionary conservation: Towards a unified concept for defining conservation units
Fraser, DJ, Bernatchez, L
2001 Molecular Ecology (Date Added: 2012-10-04)

4- Aquatic feeding by moose: selection of plant species and feeding areas in relation to plant chemical composition and characteristics of lakes.
Fraser, D, Chavez, ER, Paloheimo, JE
1984 Canadian Journal of Zoology (Date Added: 2012-10-04)

3- Aquatic plants in Lake Superior Provincial Park in relation to water chemistry.
Fraser, D, Morton, JK
1983 Canadian Field-Naturalist (Date Added: 2012-10-04)

2- Effects of moose, Alces alces, on aquatic vegetation in Sibley Provincial Park, Ontario.
Fraser, D, Hristienko, H
1983 Canadian Field-Naturalist (Date Added: 2012-10-04)

1- Aquatic feeding by moose: seasonal variation in relation to plant chemical composition and use of mineral licks ( Alces alces).
Fraser, D, Thompson, BK, Arthur, D
1982 Canadian Journal of Zoology (Date Added: 2012-10-04)