Abstract
Seasonal growth patterns have been investigated in juveniles of two reproductively isolated Arctic charr [Salvelinus alpinus (L.)] morphs, which coexist in distinct ecological niches (upper-water and deep-water environments) in a subarctic lake. Offspring (F1-generation) of each of the littoral spawning charr (LO) and the profundal spawning charr (PB) were reared individually over a period of 12 months under simulated natural photoperiod (at 69°N) and two different temperature regimes to mimic the profundal zone conditions with constantly low temperature (~4 °C) and the littoral zone conditions with seasonally cycling temperatures. All charr increased in weight during the experimental period. The LO-morph performed generally best at naturally fluctuating temperature, whereas the PB-morph grew best at a constantly low temperature (4 °C). The LO-morph showed a typical seasonal growth pattern found earlier for anadromous Arctic charr, with elevated specific growth rates (SGR) during June–October and profoundly reduced or negative SGR-values during November–February suggesting that the fish ceased feeding during this period. In contrast, the PB-morph maintained a steady growth rate, regardless of temperature regime, and showed less signs of reduced appetite during the polar night period and exhibited significantly higher SGR-values during late autumn and early winter compared to the LO-morph. This study suggests different heritable adaptations in somatic growth trajectories where the deep-water PB-morph do not show a down-regulation of appetite and voluntary fasting during winter conditions with typically low light intensity and low temperatures, and up-regulation of appetite with hyperphagia during summer, as characteristically found for the upper-water LO-morph and anadromous Arctic charr.
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References
Amundsen P-A, Knudsen R (2009) Winter ecology of Arctic charr (Salvelinus alpinus) and brown trout (Salmo trutta) in a Subarctic lake. Aquat Ecol 43:765–775
Amundsen P-A, Knudsen R, Klemetsen A (2008) Seasonal and ontogenetic variations in resource use by two sympatric Arctic charr morphs. Environ Biol Fishes 83:45–55
Armstrong JB, Bond MH (2013) Phenotype flexibility in wild fish: Dolly Varden regulate assimilative capacity to capitalize on annual pulsed subsidies. J Anim Ecol 82:966–975
Bertolo A, Pépino M, Adams J, Magnan P (2011) Behavioural thermoregulatory tactics in lacustrine brook charr, Salvelinus fontinalis. PLoS One 6:e18603
Bottengård L, Jørgensen EH (2008) Elevated spring temperature stimulates growth, but not smolt development, in anadromous Arctic charr. Comp Biochem Physiol A Mol Integr Physiol 151:596–601
Brännäs E, Wiklund B-S (1992) Low temperature growth potential of Arctic charr and Rainbow trout. Nord J Freshw Res 67:77–81
Byström P, Anderson J, Kiessling A, Eriksson LO (2006) Size and temperature dependent foraging capacities and metabolism: consequences for winter starvation mortality in fish. Oikos 115:43–52
Damsgård B, Arnesen AM, Jobling M (1999) Seasonal patterns of feed intake and growth of Hammerfest and Svalbard Arctic charr maturing at different ages. Aquaculture 171:149–160
Elliott JM, Elliott JA (2010) Temperature requirements of Atlantic salmon Salmo salar, brown trout Salmo trutta and Arctic charr Salvelinus alpinus: predicting the effects of climate change. J Fish Biol 77:1793–1817
Hall JPW (2005) Montane speciation patterns in Ithomiola butterflies (Lepidoptera: Riodinidae): are they consistently moving up in the world? Proc R Soc B 272:2457–2466
Harrod C, Mallela J, Kahilainen KK (2010) Phenotype-environment correlations and character displacement in a putative fish radiation. J Anim Ecol 79:1057–1068
Helland IP, Harrod C, Freyhof J, Mehner T (2008) Co-existence of a pair of pelagic planktivorous Coregonid fishes. Evol Ecol Res 10:373–390
Johnson L (1980) The Arctic charr, Salvelinus alpinus. In: Balon EK (ed) Charrs, Salmonid fishes of the genus Salvelinus. W. Junk, The Hague, p 87
Jonsson B, Jonsson N (2001) Polymorphism and speciation in Arctic charr. J Fish Biol 58:605–638
Jørgensen EH, Johnsen H (2014) Rhythmic life of the Arctic charr: adaptations to life at the edge. Mar Genomics 14:71–81
Kahilainen K, Østbye K (2006) Morphological differentiation and resource polymorphism in three sympatric whitefish Coregonus lavaretus (L.) forms in a subarctic lake. J Fish Biol 68:63–79
Karvonen A, Seehausen O (2012) The role of parasitism in adaptive radiations—When might parasites promote and when might they constrain ecological speciation? Intern J Ecol ID 280169
Kavanagh KD, Haugen TO, Gregersen F, Jernvall J, Vollestad LA (2010) Contemporary temperature-driven divergence in a Nordic freshwater fish under conditions commonly thought to hinder adaptation. BMC Evol Biol 10:350
Keller I, Seehausen O (2012) Thermal adaptation and ecological speciation. Mol Ecol 21:782–799
Kleinbaum DG, Kupper LL, Muller KE (1988) Applied regression analysis and other multivariable methods, 2nd edn. Duxbury Press, Belmont 718 pp
Klemetsen A (2010) The charr problem revisited: exceptional phenotypic plasticity promotes ecological speciation in postglacial lakes. Freshw Rev 3:49–74
Klemetsen A, Amundsen P-A, Knudsen R, Hermansen B (1997) A profundal, winter-spawning morph of Arctic charr Salvelinus alpinus (L.) in lake Fjellfrøsvatn, northern Norway. Nord J Freshw Res 73:13–23
Klemetsen A, Elliott JM, Knudsen R, Sørensen P (2002) Evidence for genetic differences in the offspring of two sympatric morphs of Arctic charr. J Fish Biol 60:933–950
Klemetsen A, Amundsen P-A, Dempson JB, Jonsson B, Jonsson N, O’Connell MF, Mortensen E (2003a) Atlantic salmon Salmo salar L., brown trout Salmo trutta L. and Arctic charr Salvelinus alpinus (L.): a review of aspects of their life histories. Ecol Freshw Fish 12:1–59
Klemetsen A, Knudsen R, Staldvik FJ, Amundsen P-A (2003b) Habitat, diet and food assimilation of Arctic charr under the winter ice in two subarctic lakes. J Fish Biol 62:1082–1098
Klemetsen A, Knudsen R, Primicerio R, Amundsen PA (2006) Divergent, genetically based feeding behaviour of two sympatric Arctic charr, Salvelinus alpinus (L.), morphs. Ecol Freshw Fish 15:350–355
Knudsen R, Klemetsen A, Amundsen P-A, Hermansen B (2006) Incipient speciation through niche expansion an example from the Arctic charr in a subarctic lake. Proc R Soc B 273:2291–2298
Knudsen R, Amundsen P-A, Primicerio R, Klemetsen A, Sørensen P (2007) Contrasting niche-based variation in trophic morphology within Arctic charr populations. Evol Ecol Res 9:1005–1021
Knudsen R, Primicerio R, Amundsen P-A, Klemetsen A (2010) Temporal stability of individual feeding specialization may promote speciation. J Anim Ecol 79:161–168
Knudsen R, Siwertsson A, Adams C, Garduño-Paz M, Newton J, Amundsen P-A (2011) Temporal stability of niche use exposes sympatric Arctic charr to alternative selection pressures. Evol Ecol 25:589–604
Logan ML, Cox RM, Calsbeek R (2014) Natural selection on thermal performance in a novel thermal environment. PNAS 111:14165–14169
Losos JB (2010) Adaptive radiation, ecological opportunity, and evolutionary determinism. Am Nat 175:623–639
Mousavi KS, Amundsen P-A (2012) Seasonal variation in the profundal Chironomidae (Diptera) assemblage of a subarctic lake. Boreal Environ Res 17:102–112
Ohlberger J, Mehner T, Staaks G, Hoelker F (2008a) Temperature-related physiological adaptations promote ecological divergence in a sympatric species pair of temperate freshwater fish, Coregonus spp. Funct Ecol 22:501–508
Ohlberger J, Staaks G, Petzoldt T, Mehner T, Hoelker F (2008b) Physiological specialization by thermal adaptation drives ecological divergence in a sympatric fish species pair. Evol Ecol Res 10:1173–1185
Ohlberger J, Brännström A, Dieckmann U (2013) Adaptive phenotypic diversification along a temperature-depth gradient. Am Nat 182:359–373
Præbel K, Knudsen R, Siwertsson A, Karhunen M, Kahilainen KK, Ovaskainen O, Østbye K, Peruzzi S, Fevolden S-E, Amundsen P-A (2013) Ecological speciation in postglacial European whitefish: rapid adaptive radiations into the littoral, pelagic and profundal lake habitats. Ecol Evol 3:4970–4986
Ravigne V, Dieckmann U, Olivieri I (2009) Live where you thrive: joint evolution of habitat choice and local adaptation facilitates specialization and promotes diversity. Am Nat 174:E141–E169
Richardson JL, Urban MC, Bolnick DI, Skelly DK (2014) Microgeographic adaptation and the spatial scale of evolution. Trends Ecol Evol 29:165–176
Rieseberg LH, Whitton J, Gardner K (1999) Hybrid zones and the genetic architecture of a barrier to gene flow between two sunflower species. Genetics 152:713–727
Robinson BW, Parsons KJ (2002) Changing times, spaces, and faces: tests and implications of adaptive morphological plasticity in the fishes of northern postglacial lakes. Can J Fish Aquat Sci 59:1819–1833
Sæther B-S, Johnsen HK, Jobling M (1996) Seasonal changes in food consumption and growth of Arctic charr exposed to either simulated natural or a 12:12 LD Photoperiod at constant water temperatures. J Fish Biol 48:1113–1122
Schluter D (2000) The ecology of adaptive radiation. Oxford University Press, Oxford
Schluter D (2001) Ecology and the origin of species. Trends Ecol Evol 16:372–380
Siikavuopio SI, Knudsen R, Winger AC, Kristoffersen R (2009a) Is the winter period a severe bottleneck of anadromous riverine Arctic charr parr? Ecol Freshw Fish 18:126–131
Siikavuopio SI, Sæther BS, Skybakmoen S, Uhlig C, Haugland E (2009b) Effects of a simulated short winter period on growth in wild caught Arctic charr (Salvelinus alpinus L.) held in culture. Aquaculture 287:431–434
Siikavuopio SI, Knudsen R, Amundsen P-A (2010) Growth and mortality of Arctic charr and European whitefish reared at low temperatures. Hydrobiologia 650:255–263
Siwertsson A, Knudsen R, Kahilainen KK, Præbel K, Primicerio R, Amundsen P-A (2010) Sympatric diversification influenced by ecological opportunity and historical contingency in a young specieslineage of whitefish. Evol Ecol Res 12:929–947
Siwertsson A, Knudsen R, Adams CE, Præbel K, Amundsen P-A (2013a) Parallel and non-parallel morphological divergence amongst foraging specialists in European whitefish (Coregonus lavaretus). Ecol Evol 3:1590–1602
Siwertsson A, Knudsen R, Præbel K, Adams CE, Newton J, Amundsen P-A (2013b) Discrete foraging niches promote ecological, phenotypic and genetic divergence in sympatric whitefish (Coregonus lavaretus). Evol Ecol 27:547–564
Skulason S, Snorrason SS, Noakes DLG (1996) Genetic basis of life history variations among sympatric morphs of Arctic char, Salvelinus alpinus. Can J Fish Aquat Sci 53:1807–1813
Skulason S, Snorrason SS, Jonsson B (1999) Sympatric morphs, populations and speciation in freshwater fish with emphasis on Arctic charr. In: Magurran AE, May RM (eds) Evolution of biological diversity. Oxford University Press, Oxford, pp 70–92
Smalås A, Amundsen P-A, Knudsen R (2013) Contrasting life history strategies between sympatric Arctic charr morphs, Salvelinus alpinus. J Ichtyol 53:856–866
Svedäng H (1990) Genetic basis in life history variation of dwarf and normal Arctic charr Salvelinus alpinus (L.) in Stora Rösjön, central Sweden. J Fish Biol 36:917–932
Svenning MA, Klemetsen A, Olsen T (2007) Habitat and food choice of Arctic charr in Linnevatn on Spitsbergen, Svalbard: the first year-round investigation in high Arctic lake. Ecol Freshw Fish 16:70–77
Tveiten H, Johnsen HK, Jobling M (1996) Influence of maturity status on the annual cycles of feeding and growth in Arctic charr reared at constant temperature. J Fish Biol 48:910–924
Vonlanthen P, Roy D, Hudson AG, Largiadè CR, Bittner D, Seehausen O (2009) Divergence along a steep ecological gradient in lake whitefish (Coregonus sp.). J Evol Biol 22:498–514
Westgaard JI, Klemetsen A, Knudsen R (2004) Genetic differences between two sympatric morphs of Arctic charr Salvelinus alpinus (L.) confirmed by microsatellite DNA. J Fish Biol 65:1185–1191
Acknowledgments
The project has been financially supported by the Department of Arctic and Marine Biology, University of Tromsø and Nofima. We would also like to thank Karolyn O’Conner for English corrections and Tromsø Research Station for their technical assistance.
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Knudsen, R., Johnsen, H., Sæther, BS. et al. Divergent growth patterns between juveniles of two sympatric Arctic charr morphs with contrasting depth gradient niche preferences. Aquat Ecol 49, 33–42 (2015). https://doi.org/10.1007/s10452-015-9502-y
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DOI: https://doi.org/10.1007/s10452-015-9502-y