| dc.contributor.author | Stewart, D.C. | en |
| dc.contributor.author | McKelvey, S. | en |
| dc.contributor.author | Armstrong, J.D. | en |
| dc.coverage.temporal | 2015/2016 | en |
| dc.date.accessioned | 2021-05-05T11:17:18Z | |
| dc.date.available | 2021-05-05T11:17:18Z | |
| dc.date.issued | 2015 | en |
| dc.identifier.uri | https://hdl.handle.net/20.500.12594/11202 | |
| dc.relation.ispartof | Scottish Marine and Freshwater Science | en |
| dc.title | Ranching to the rod: an evaluation of adult returns from hatchery-reared Atlantic salmon smolts released in Scottish rivers | en |
| dc.type | Report | en |
| dcterms.abstract | The introduction of hatchery-reared Atlantic salmon smolts to rivers in support of local salmon fisheries (termed ranching) is a controversial subject with little information available to fishery managers on the value of the method in a Scottish context. Here we present recapture data from monitored smolt releases on four Scottish rivers and compare return rates of hatchery and wild-reared salmon smolts originating from a common stock on two of these rivers. Rod recapture rates from stocked hatchery smolts ranged from 0-0.23%. In comparative tests return rates for wild-reared fish were on average ten times greater than those for stocked fish (range 6 to 13-fold where at least one reared fish returned). Given the relatively poor returns and associated production costs any benefit to fisheries of stocking with hatchery-reared smolts is unlikely to be sustainable in the Scottish context. Furthermore, risks of adverse genetic effects should be considered. | |
| dcterms.bibliographicCitation | Stewart, D. C., McKelvey, S. & Armstrong, J. D. (2015). Ranching to the rod: an evaluation of adult returns from hatchery-reared Atlantic salmon smolts released in Scottish rivers. Scottish Marine and Freshwater Science, 6(5), 13pp. | en |
| dc.identifier.doi | https://doi.org/10.7489/1610-1 | en |
| dcterms.sizeOrDuration | 13pp | |
| dcterms.issue | 5 | |
| dcterms.volume | 6 | |
| rsc.identifier | MARINE_1078 | en |
