Life-history styles and somatic allocation in iteroporous arctic charr and semelparous pink salmon

1990 ◽  
Vol 28 (1-4) ◽  
pp. 267-272 ◽  
Author(s):  
Moira M. Ferguson ◽  
David L. G. Noakes ◽  
S�li Sk�lason ◽  
Sigurdur S. Snorrason
Keyword(s):  
Life History ◽  
Arctic Charr ◽  
Pink Salmon

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 Elevated temperature and deposited sediment jointly affect early life history traits in southernmost arctic charr populations

2021 ◽  
Author(s):  
Lisandrina Mari ◽  
Martin Daufresne ◽  
Jean Guillard ◽  
Guillaume Evanno ◽  
Emilien Lasne
Keyword(s):  
Global Warming ◽  
Life History ◽  
Elevated Temperature ◽  
Early Life ◽  
Life History Traits ◽  
Environmental Changes ◽  
Arctic Charr ◽  
Early Life History ◽  
The Body ◽  
Interactive Effects

The combination of global warming and local stressors can have dramatic consequences on freshwater biota. Sediment deposition is an important pressure that can affect benthic species and benthic ontogenetic stages (eggs and larvae) habitat quality. However, knowledge on the effects of sediment in a warming context is lacking. We used a common garden approach to examine the effects of combined exposure to elevated temperature and deposited sediment on early life history traits in offspring of four wild arctic charr (Salvelinus alpinus) populations, originating from geographically isolated lakes at the Southern edge of the species range. We report interactive effects of temperature and sediment, with higher temperature exacerbating the negative effects of sediments on the duration of the incubation period and on the body size-yolk expenditure trade-off during development. Our results highlight that reevaluating the impacts of sediment on organisms under the lens of global warming and at the scale of several wild populations is needed to improve our understanding of how vulnerable species can respond to environmental changes.

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