Evolution of the life history of Arctic charr Salvelinus alpinus

1994 ◽  
Vol 8 (3) ◽  
pp. 315-327 ◽  
Author(s):  
Leif Asbjørn Vøllestad ◽  
Jan Henning L'Abée-Lund
Keyword(s):  
Life History ◽  
Salvelinus Alpinus ◽  
Arctic Charr ◽  
History Of

Life history of anadromous arctic charr, Salvelinus alpinus, in the Fraser River, northern Labrador

1985 ◽  
Vol 63 (2) ◽  
pp. 315-324 ◽  
Author(s):  
J. B. Dempson ◽  
J. M. Green
Keyword(s):  
Life History ◽  
Salvelinus Alpinus ◽  
Arctic Charr ◽  
Fork Length ◽  
Fraser River ◽  
Large Variability ◽  
Anadromous Arctic Charr ◽  
North American Arctic ◽  
History Of ◽  
Length Variable

Upstream migrations of anadromous Arctic charr, Salvelinus alpinus, were monitored in the Fraser River, Labrador. Samples of charr were randomly obtained from 1975 to 1979 for biological analysis of age, growth, reproductive, and migratory characteristics. The run begins in mid-July and extends until late September. Larger charr tend to enter the river first with a progressive decrease in mean length throughout the run. Size and age composition of migrant charr range from 13 to 82 cm ([Formula: see text], 45.1 ± 7.3) and from 3 to 18 years (8.3 ± 1.7), respectively. Spawning activity peaks during the last 2 weeks in October. Fecundity of fish 41–61 cm in fork length ranged from 2316 to 9245 eggs (4665 ± 434) with approximately 75% of females mature by 8 years of age. There was no evidence from tag recaptures over an 8-year period (1976–1983; N = 241) that Fraser River charr undergo extensive marine migrations. Approximately 84% of the recaptures were from fish which either returned to the Fraser River or were caught in commercial and domestic fisheries in adjacent Nain and Tikkoatokak bays. In comparison with other North American Arctic charr populations, Fraser River charr are similar with respect to the large variability observed in age at length, variable maturation cycle, and preponderance of females at sea during the summer. Differences, however, occur among individual life history characteristics such as growth rate, size and age at first seaward migration, size and age at maturity, fecundity, and movements at sea.

Migration and life history variation in Arctic charr,Salvelinus alpinus

Ecoscience ◽  
1996 ◽  
Vol 3 (1) ◽  
pp. 33-41 ◽  
Author(s):  
Ross F. Tallman ◽  
Fernand Saurette ◽  
Trevor Thera
Keyword(s):  
Life History ◽  
Salvelinus Alpinus ◽  
Arctic Charr ◽  
Life History Variation

scholarly journals Environmentally Modulated Repeat Evolution of Polymorphic Arctic Charr Life History Traits

2021 ◽  
Vol 9 ◽  
Author(s):  
Gabrielle Grenier ◽  
Aslak Smalås ◽  
Runar Kjær ◽  
Rune Knudsen
Keyword(s):  
Life History ◽  
Life History Traits ◽  
Growth Parameters ◽  
Salvelinus Alpinus ◽  
Arctic Charr ◽  
Local Environment ◽  
Life History Strategies ◽  
Age At Maturity ◽  
First Time ◽  
Sympatric Morphs

Sympatric Arctic charr, Salvelinus alpinus (L. 1758), morphs have flexible but repeated life history strategies tested across five Norwegian lakes. In several Scandinavian polymorphic Arctic charr populations differentiated by their diet and habitat use, a large littoral omnivorous (LO) morph commonly cooccurs with a smaller profundal spawning (PB/PZ) morph. A third, large piscivorous (PP) morph is also known to occur within a portion of Arctic charr populations in the profundal habitat along with the PB/PZ individuals. Life history traits, such as age at maturity, growth, and diet are known to differ among coexisting morphs. Notably, the PP morph was the longest morph with the oldest age at maturity while the PB/PZ morph showed the shortest lengths overall and youngest age with LO morph being intermediate in both traits. Growth parameters differed across all the morphs. When examining growth within morph groups, the LO morph was found to have different growth across all lakes, while similar reproductive investments and different energy acquisition patterns were seen within the PB/PZ and PP morphs. These results suggest repeat evolution in several life history strategies of reproductively isolated Arctic charr sympatric morphs, notably for the first time in the PP morph, while also highlighting the importance of the local environment in modulating life history traits.

Extant and extinct forms of arctic charr Salvelinus alpinus (L.) complex from the Leprindo lake system (Transbaikalia): Differentiation in life history, morphology, and genetics

2013 ◽  
Vol 53 (10) ◽  
pp. 792-803 ◽  
Author(s):  
S. S. Alekseyev ◽  
N. V. Gordeeva ◽  
V. P. Samusenok ◽  
A. N. Matveev ◽  
R. S. Andreev ◽  
...  
Keyword(s):  
Life History ◽  
Salvelinus Alpinus ◽  
Arctic Charr ◽  
Lake System

scholarly journals Marine trophic niche use and life history diversity among Arctic charr Salvelinus alpinus in southwestern Greenland

2020 ◽  
Vol 96 (3) ◽  
pp. 681-692
Author(s):  
Jan G. Davidsen ◽  
Michael Power ◽  
Rune Knudsen ◽  
Aslak D. Sjursen ◽  
Gaute Kjærstad ◽  
...  
Keyword(s):  
Life History ◽  
Salvelinus Alpinus ◽  
Arctic Charr ◽  
Trophic Niche
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