Don Fishery Management Plan - RAFTS

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3) Genetic analysis.Particular groups of fish are genetically suited to particular locations within catchmentsand so natural genetic population structuring should therefore be conserved (Youngson,2007). The migrating adults intercepted at Newe weir may have been destined to spawnin one of a number of tributaries or the mainstem of the <strong>Don</strong> upstream. The resultingprogeny may therefore be more naturally suited to specific parts of the catchment and ifthey are instead stocked somewhere less appropriate survival may be reduced.Comparing the genetic make-up of juvenile populations within different tributaries in theupper catchment will help to establish if the populations are distinct and should beconserved as such.The extensive recording of individual brood fish information required by law during therunning of the hatchery is adhered to by the Board and overseen by the MarineDirectorate. The hatchery facility and procedures can also be reviewed as part of theevaluation to determine whether future investment is required.Outcomes of Hatchery Programme EvaluationData CollectedAvailable habitat and juvenile densitiesGenetic analysisData Uses• Establish where stocking would bebeneficial• Establish if stocking is the most costeffective approach• Determine if population mixing isoccurring• Confirm if brood stock source locationand stocking locations are appropriateLead BodiesThe hatchery operations are managed by the <strong>Don</strong> DSFB. Collaboration with the RDTwill allow the data derived from the habitat, electric fishing and genetic surveys to beeffectively integrated into the evaluation process.Future WorkA revision of the stocking procedure in light of best practice, (FRS, 2003; Youngson,2007) and the evaluation may be necessary. Any stocking which is carried out should bemonitored to ensure it is beneficial, e.g. results in increased numbers of juvenile salmon.31
4.2.8 Timescale for Survey Programme2009 2010 2011 Lead BodyHABITAT SURVEY #Fieldwork* catchment survey** priority improvementsDatabase & reportingApr – Oct * (RDT only)Apr – Jul * (RDT + 3 others)Oct -May, Jun**Mar Oct -May, Jun**Mar Oct -RDTRDT (+DDSFB /assistants)RDTELECTRIC FISHINGFieldworkDatabase & reportingAug - Sep †Oct -Jul - SepMar Oct -Jul - SepMar Oct -RDT (DDSFB)RDTREDD COUNTSNov - Jan Nov - Jan Nov - DDSFBGENETIC SAMPLINGjuvenile sampling (e. fishing) –broodstock -Aug / SepNovJul - SepNovRDTDDSFBOBSTACLE ASSESSMENTFieldworkReportingCATCH RETURNSSCALE SAMPLINGHATCHERYEVALUATIONReportingAug / SepJan, FebAug / SepJan, FebSet up returns collationSet up scale samplingAnalysis Feb, Mar Feb, MarJan, FebRDTDDSFB, RDBTIARDTRDTRDT (DDSFB)REVIEW AND PUBLISHFIRST THREE YEARS’FINDINGS, ESTABLISHNEXT THREE YEARS’WORK PROGRAMMEOct – DecRDT# Two timescales for the catchment’s habitat survey have been included based on a single surveyor or four surveyors.† The widespread electric fishing of the catchment in 2009 is dependent upon the habitat survey having been completed.32
Page 1 and 2: RIVER DONFISHERY MANAGEMENT PLAN200
Page 3 and 4: 4.6 Ongoing Management 344.6.1 Bail
Page 5 and 6: Salmon, sea trout and brown trout c
Page 7 and 8: 2.3 TopographyThe mainstem of the R
Page 9 and 10: Adjacent to the Don catchment, but
Page 11 and 12: Figure 3.1.1 Distribution of Atlant
Page 13 and 14: 3.1.4 Lamprey speciesThe adult sea
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Page 17 and 18: 3.2.5 Coarse Species FisheriesRecog
Page 19 and 20: 4. MANAGEMENT PRIORITIESIn order to
Page 21 and 22: instream habitat types suitable for
Page 23 and 24: Lead BodiesScientific research is a
Page 25 and 26: Lead BodiesElectric fishing surveys
Page 27 and 28: Survey MethodFin clips can be remov
Page 29 and 30: 4.2.5 Impact of Known ObstructionsS
Page 31 and 32: Improvement Association collates in
Page 33: 4.2.7 Evaluation of Hatchery Progra
Page 37 and 38: 4.6 Ongoing ManagementThere are exi
Page 39 and 40: 5. STAFF STRUCTURE AND DEVELOPMENTA
Page 41: 8. REFERENCESCalderwood, W.L. (1909

Don Fishery Management Plan - RAFTS

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