Reduced photoperiod (18 h light vs. 24 h light) during first-year rearing associated with increased early male maturation in Atlantic salmon Salmo salar
 cultured in a freshwater recirculation aquaculture system

Growth and sea survival rates decreased with increasing smolt age, with survival being 12, 6, and 3% for 3+, 4+, and 5+ smolt, respectively. All spawning fish were grilse, which suggests that older smolt became large salmon and were thus more vulnerable to the commercial fishery. A density-dependent relationship was observed for 3+ smolt in their 1st yr of growth, but not for older smolt; younger smolt probably spend their juvenile life in a more productive but space-limiting part of the river. Variation between river-system environments may be responsible for the opposing results of studies on Atlantic salmon (Salmo salar) life history. Key words: Salmo salar, growth, sea survival, density dependence, first-year growth, age at smoltification

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Effects of stocking density on the growth and immunity of Atlantic salmon salmo salar reared in recirculating aquaculture system (RAS)

Journal of Oceanology and Limnology ◽

10.1007/s00343-019-7350-7 ◽

2018 ◽

Vol 37 (1) ◽

pp. 350-360 ◽

Cited By ~ 2

Author(s):

Yanfeng Wang ◽

Liang Chi ◽

Qinghua Liu ◽

Yongshuang Xiao ◽

Daoyuan Ma ◽

...

Keyword(s):

Atlantic Salmon ◽

Salmo Salar ◽

Stocking Density ◽

Recirculating Aquaculture System ◽

Atlantic Salmon Salmo Salar ◽

Recirculating Aquaculture ◽

Aquaculture System

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Does climate during embryonic development influence parr growth and age of seaward migration in Atlantic salmon (Salmo salar)?

Canadian Journal of Fisheries and Aquatic Sciences ◽

10.1139/f05-154 ◽

2005 ◽

Vol 62 (11) ◽

pp. 2502-2508 ◽

Cited By ~ 37

Author(s):

Nina Jonsson ◽

Bror Jonsson ◽

Lars Petter Hansen

Keyword(s):

Atlantic Salmon ◽

Water Temperature ◽

Early Development ◽

Salmo Salar ◽

Climatic Conditions ◽

First Year ◽

Long Term Effects ◽

Atlantic Salmon Salmo Salar ◽

One Year ◽

First Year Of Life

Climatic conditions experienced by Atlantic salmon (Salmo salar) in their early development appear to affect parr size at the end of the first growth season and age at emigration from the nursery river. North Atlantic Oscillation indices (NAOIs) correlated positively with water temperature (degree-days) and discharge in the River Imsa during winter (JanuaryApril) 19762002, indicating a significant oceanic influence on the winter conditions in the river. Specific growth rate of Atlantic salmon parr during the first year of life and the proportion of one-year-old smolts correlated positively with water temperature, flow, and NAOI during FebruaryApril during the winter of egg incubation, but only NAOI was significant when cross-correlating the two series using a time difference of 1 year. Water temperature correlated significantly with the proportion of salmon cohorts smolting and migrating to sea at age-1. Such long-term effects of climate during early development may be more important than generally recognized.

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