Keyword search (3,619 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:The relationship between eDNA particle concentration and organism abundance in nature is strengthened by allometric scaling.
Authors:Yates MC,  Glaser D,  Post J,  Cristescu ME,  Fraser DJ,  Derry AM
Link:https://www.ncbi.nlm.nih.gov/pubmed/32638451?dopt=Abstract
DOI:10.1111/mec.15543
Category:Mol Ecol
PMID:32638451
Dept Affiliation: CONCORDIA
1 Université du Québec à Montréal, Montréal, Québec, Canada.
2 University of Calgary Calgary, Alberta, Canada.
3 McGill University Montreal, Quebec, Canada.
4 Concordia University Montreal, Quebec, Canada.

Description:

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

Mol Ecol. 2020 Jul 07;:

Authors: Yates MC, Glaser D, Post J, Cristescu ME, Fraser DJ, Derry AM

Abstract

Organism abundance is a critical parameter in ecology, but its estimation is often challenging. Approaches utilizing eDNA to indirectly estimate abundance have recently generated substantial interest. However, preliminary correlations observed between eDNA concentration and abundance in nature are typically moderate in strength with significant unexplained variation. Here we apply a novel approach to integrate allometric scaling coefficients into models of eDNA concentration and organism abundance. We hypothesize that eDNA particle production scales non-linearly with mass, with scaling coefficients < 1. Wild populations often exhibit substantial variation in individual body size distributions; we therefore predict that the distribution of mass across individuals within a population will influence population-level eDNA production rates. To test our hypothesis, we collected standardized body size distribution and mark-recapture abundance data using whole-lake experiments involving nine populations of brook trout. We correlated eDNA concentration with three metrics of abundance: density (individuals/ha), biomass (kg/ha), and allometrically scaled mass (ASM) (?(individual mass0.73 )/ha). Density and biomass were both significantly positively correlated with eDNA concentration (adj. r2 = 0.59 and 0.63, respectively), but ASM exhibited improved model fit (adj. r2 = 0.78). We also demonstrate how estimates of ASM derived from eDNA samples in 'unknown' systems can be converted to biomass or density estimates with additional size structure data. Future experiments should empirically validate allometric scaling coefficients for eDNA production, particularly where substantial intraspecific size distribution variation exists. Incorporating allometric scaling may improve predictive models to the extent that eDNA concentration may become a reliable indicator of abundance in nature.

PMID: 32638451 [PubMed - as supplied by publisher]