Links between patterns of marine growth and survival of Atlantic salmon Salmo salar, L.

The hypothesis that marine survival of Atlantic salmon Salmo Salar is linked to marine growth was explored by using inter-circuli distances and total numbers of circuli existing on scales from a population monitored over nearly four decades. The results suggest that marine growth controls survival, particularly during the late summer and early winter of the first year at sea. Recruitment is strongly linked to growth, described as the total number of circuli, but not to inter-circuli distances. This highlights the potential of patterns of circuli number to be considered as proxies for growth. Indications that hatchery populations might be subject to other mortality events, in addition to those experienced by wild populations, are also presented.

[1]  Michael R. Heath,et al.  Changes in the structure and function of the North Sea fish foodweb, 1973–2000, and the impacts of fishing and climate , 2005 .

[2]  P. McGinnity,et al.  A two-generation experiment comparing the fitness and life history traits of native, ranched, non-native, farmed and hybrid Atlantic salmon under natural conditions. , 2007 .

[3]  A. D. Cross,et al.  Evidence for Size‐Selective Mortality after the First Summer of Ocean Growth by Pink Salmon , 2005 .

[4]  Kevin D. Friedland,et al.  Marine survival of North American and European Atlantic salmon: effects of growth and environment , 1993 .

[5]  J. Reynolds,et al.  Climate Change and Distribution Shifts in Marine Fishes , 2005, Science.

[6]  H. L. Louarn,et al.  Caractéristiques scalimétriques des principales espèces de poissons d'eau douce de France , 1987 .

[7]  Grégory Beaugrand,et al.  The North Sea regime shift: Evidence, causes, mechanisms and consequences , 2004 .

[8]  P. Fjelldal,et al.  Vertebrae of the trunk and tail display different growth rates in response to photoperiod in atlantic salmon, Salmo salar L., post-smolts , 2005 .

[9]  D. L. Parrish,et al.  Integrating across scales: effectively applying science for the successful conservation of Atlantic salmon (Salmo salar) , 1998 .

[10]  John G. Pope,et al.  Changes in the North Sea fish community: evidence of indirect effects of fishing? , 2003 .

[11]  Grégory Beaugrand,et al.  Long‐term changes in phytoplankton, zooplankton and salmon related to climate , 2003 .

[12]  P. C. Reid,et al.  Reorganization of North Atlantic Marine Copepod Biodiversity and Climate , 2002, Science.

[13]  N. Maoiléidigh,et al.  Estimating and forecasting pre-fishery abundance of Atlantic salmon (Salmo salar L.) in the Northeast Atlantic for the management of mixed-stock fisheries , 2004 .

[14]  C. M. Neville,et al.  Evidence That Reduced Early Marine Growth is Associated with Lower Marine Survival of Coho Salmon , 2004 .

[15]  L. Clarke,et al.  Influence of growth and temperature on strontium deposition in the otoliths of Atlantic salmon , 2004 .

[16]  Anthony J. Richardson,et al.  Climate Impact on Plankton Ecosystems in the Northeast Atlantic , 2004, Science.

[17]  K. Friedland,et al.  Linkage between ocean climate, post-smolt growth, and survival of Atlantic salmon (Salmo salar L.) in the North Sea area , 2000 .

[18]  S. Jennings,et al.  Life history correlates of responses to fisheries exploitation , 1998, Proceedings of the Royal Society of London. Series B: Biological Sciences.

[19]  K. Friedland,et al.  The emerging role of climate in post-smolt growth of Atlantic salmon , 2005 .

[20]  B. Jonsson,et al.  The marine survival and growth of wild and hatchery‐reared Atlantic salmon , 2003 .

[21]  O. I. Forsberg.  Empirical investigations on growth of post-smolt Atlantic salmon (Salmo salar L.) in land-based farms. Evidence of a photoperiodic influence , 1995 .

[22]  K. Friedland,et al.  Growth patterns of Labrador Sea Atlantic salmon postsmolts and the temporal scale of recruitment synchrony for North American salmon stocks , 2000 .

[23]  J. Fisher.  Spacing of scale circuli versus growth rate in young coho salmon. , 1990 .

[24]  S. Jennings,et al.  Marine Fisheries Ecology , 2001 .

[25]  Statistical interrelation of length, growth, and scale circulus spacing: appraisal of a growth rate estimator for fish , 1987 .

[26]  Richard J. Beamish,et al.  A critical size and period hypothesis to explain natural regulation of salmon abundance and the linkage to climate and climate change , 2001 .

[27]  M. Kaeriyama,et al.  Scale analyses to estimate somatic growth in sockeye salmon, Oncorhynchus nerka , 1997 .

[28]  J. Butler,et al.  Assessing and Managing the Impacts of Marine Salmon Farms on Wild Atlantic Salmon in Western Scotland: Identifying Priority Rivers for Conservation , 2007 .

[29]  J. Armstrong,et al.  The Significance of Marine Mammal Predation on Salmon and Sea Trout , 2007 .

[30]  Kevin D. Friedland,et al.  Marine temperatures experienced by postsmolts and the survival of Atlantic salmon, Salmo salar L., in the North Sea area , 1998 .

[31]  A. Nicieza,et al.  Relationships among Smolt Size, Marine Growth, and Sea Age at Maturity of Atlantic Salmon (Salmo salar) in Northern Spain , 1993 .

[32]  W. Pearcy,et al.  Seasonal changes in growth of coho salmon (Oncorhynchus kisutch) off Oregon and Washington and concurrent changes in the spacing of scale circuli , 2005 .

[33]  M. Dillane,et al.  Temporal and environmental influences on the variation in Atlantic salmon smolt migration in the Burrishoole system 1970-2000 , 2003 .