Differences in Thermal Tolerance Among Sockeye Salmon Populations
By E. Eliason, Timothy D. Clark, Merran J. Hague, L. M. Hanson, Z. Gallagher, K. Jeffries, M. K. Gale, D. Patterson, S. Hinch, A. Farrell. Science, 2011
878 citations recorded by the source corpus.
Environmental conditions encountered during migration shape cardiorespiratory physiology in sockeye salmon. Climate change–induced increases in summer water temperature have been associated with elevated mortality of adult sockeye salmon (Oncorhynchus nerka) during river migration. We show that cardiorespiratory physiology varies at the population level among Fraser River sockeye salmon and relates to historical environmental conditions encountered while migrating. Fish from populations with more challenging migratory environments have greater aerobic scope, larger hearts, and better coronary supply. Furthermore, thermal optima for aerobic, cardiac, and heart rate scopes are consistent with the historic river temperature ranges for each population. This study suggests that physiological adaptation occurs at a very local scale, with population-specific thermal limits being set by physiological limitations in aerobic performance, possibly due to cardiac collapse at high temperatures.
Subfields: Ecology, Global and Planetary Change, Nature and Landscape Conservation
View Paper: https://www.semanticscholar.org/paper/53546b01c7eeb6e624c6018431848c7d8d4a052c
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Citations in the corpus
- Global streamflow and thermal habitats of freshwater fishes under climate change (2013, background): “Physiological adaptation to thermal habitat changes occurs at local scale and depends on population and genetic diversity, as shown for sockeye salmon in the Fraser River (Eliason et al. 2011).”
- Energy homeostasis as an integrative tool for assessing limits of environmental stress tolerance in aquatic invertebrates. (2012, background): “Transition to partial anaerobiosis at critical temperatures in marine ectotherms is attributed to the limited capacity of oxygen uptake and transport mechanisms rather than to neural and/or mitochondrial dysfunction (Frederich and Pörtner, 2000; Sokolova and Pörtner, 2003; Eliason et al., 2011).”
- Aerobic scope measurements of fishes in an era of climate change: respirometry, relevance and recommendations (2013, neutral): “…Lefrançois, 2007; Pörtner and Knust, 2007; Farrell et al., 2008; Pörtner et al., 2008; Pörtner and Farrell, 2008; Munday et al., 2009; Nilsson et al., 2009; Pörtner, 2010; Pörtner and Peck, 2010; Clark et al., 2011; Eliason et al., 2011; Donelson et al., 2012; Munday et al., 2012; Pörtner, 2012).”
- Physiological Basis of Climate Change Impacts on North American Inland Fishes (2016, background): “The functional thermal tolerance has been determined for seven populations of Sockeye Salmon Oncorhynchus nerka in the Fraser River watershed in British Columbia, Canada (Lee et al. 2003; Eliason et al. 2011, 2013).”
- Assisted Gene Flow to Facilitate Local Adaptation to Climate Change (2013, background): “Different populations of sockeye salmon are physiologically adapted to historical water temperatures that vary with the timing of their migration to freshwater spawning grounds (Eliason et al. 2011, Martins et al. 2012).”
- Differential plasticity of metabolic rate phenotypes in a tropical fish facing environmental change (2016, background): “…transport capacity and cause shifts in phenology, distribution and abundance of aquatic ectotherms (P€ortner & Knust 2007; P€ortner & Farrell 2008; Eliason et al. 2011), yet the differential capacity for metabolic performance between conspecifics within a pop- ulation has received almost no…”
- Thermal performance curves, phenotypic plasticity, and the time scales of temperature exposure. (2011, background): “For example, one of the most convincing empirical examinations of the hypothesis of oxygen and capacity limited thermal tolerance is an examination of variation in the TPCs for aerobic scope in different stocks of sockeye salmon (Eliason et al. 2011), which found a strong correlation between the Top”
- The effects of temperature on aerobic metabolism: towards a mechanistic understanding of the responses of ectotherms to a changing environment (2015, background): “…that variation in aerobic metabolism measured at the tissue and whole-organism levels are associated with differences in performance and fitness, or correlates of fitness (Pörtner and Knust, 2007; Farrell et al., 2008; Eliason et al., 2011; Zera, 2011; White et al., 2012; Rauhamäki et al., 2014).”
- The optimal combination of standard metabolic rate and aerobic scope for somatic growth depends on food availability (2015, background): “…to differences in geo- graphic distributions (Naya & Bozinovic 2012), ability to cope with environmental extremes (P€ortner & Knust 2007; Kassahn et al. 2009) and migratory effort (Tudorache, Blust & De Boeck 2007; Eliason et al. 2011), suggesting that it might be a trait of ecological relevance.”
- High river temperature reduces survival of sockeye salmon (Oncorhynchus nerka) approaching spawning grounds and exacerbates female mortality (2012, background): “…temperatures near the median of the historical lower river temperature distribution experienced by the Late Shuswap stock, whereas the latter represents temperature extremes that these fish have encountered since they advanced their river-entry timing (Patterson et al. 2007; Eliason et al. 2011).”