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Grayling Biology


Review Of Grayling Biology (Dr. T. Northcote)

Spawning Grayling (Dr. Roy Shaw)

Grayling Eyes (Dr. Roger Hughes)

Passages For All Lowland River Fishes (Dr. Martyn Lucas)

Familiarity with a partner influences behavior (Hart et. al. 2014)

Hatchery Management of Grayling

Maerdy Hatchery Report (Rod Calbrade, Former Grayling Society Editor)

Grayling: The Journal of the Grayling Society

EA Grayling Research Contributions


The UK Environment Agency has kindly granted permission to present these documents. Each was produced as part of R & D projects that the EA had contributed funding to.


Grayling Genetics (Dawnay,Dawnay,Hughes,Cove,Taylor)

Validating the age of grayling (Horka, Ibbotson, Jones, Cove, Scott)

Grayling Development (Richard Cove, EA)

National Trout & Grayling Fisheries Strategy (Richard Cove, EA)

Seasonal Movement & Habitat Use of Grayling in the UK (Dr.Martyn Lucas)

Review of Grayling Ecology (A.T. Ibbotson et al)

Ceiriog Stocking Report (Richard Cove, EA)

Research Groups & Bibliography


Grayling Research Groups (Dr. Les Jervis)

Grayling Research Bibliography (Dr. Les Jervis)

Grayling Research Abstracts - 2012 (Dr. Les Jervis)

Grayling Research Abstracts - 2013 (Dr. Les Jervis)

GRT Chairman's Reports


Chairman's Report 2007

Chairman's Report 2008

Chairman's Report 2009

Chairman's Report 2010

Chairman's Report 2011

Chairman's Report 2012

Chairman's Report 2013



Grayling spawning

Grayling spawning in the River Frome

Grayling spawning in the River Dever at Bransbury

Brown trout & grayling in the River Dove (LADFFA)

Colorado Arctic grayling (history and ecology)

Biosecurity video - Prevent the spread of invasive species



GS Symposium Speakers

GRT Funded MSc, PhD Studies

Two degree project interim reports were among presentations at the most recent Grayling Society symposium. Both studies are currently funded by the GRT and both operate on a premise that alongside the intrinsic value of grayling as a game fish, their survival challenges provide early indication of problems that are or will likely become problems for other salmonids.


Stephen Gregory (Game and Wildlife Conservation Trust) described an MSc study plan for statistical mining of the existing Wylye Study data, questioning the effect of extreme climate events on grayling population dynamics. He emphasized that the GWCT now leads all processing aspects of the 30-year Wylye Grayling Study (WGS) dataset - the longest and most complete in Europe...possibly in the world.


Vanessa Huml's (Manchester Metropolitan University) PhD study is titled Assessing adaptive genetic variation for effective management and conservation of European grayling. Read her description of planned work, noting reference to new sequencing technology and reference to the four U.K. genetically distinct groups identified in the earlier genetic census funded by the GRT.


The two studies both look at grayling population health/stability under extant environmental conditions but the doctoral work extends inquiry to genetic proclivity for survival ('evolvability').


Both investigators will submit detailed results for publication here after review in their respective peer literature.