Optimum and maximum temperatures of sockeye salmon (<i>Oncorhynchus nerka</i>) populations hatched at different temperatures

ChenZ.,; AnttilaK.,; WuJ.,

doi:10.1139/cjz-2012-0300

Cited by 67 publications

(70 citation statements)

References 54 publications

(77 reference statements)

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“…While the correspondence between thermal tolerance and environmental conditions suggests local adaptation brought about by selection on additive genetic effects, our study suggests that an indirect genetic effect-mediated by egg size-could instead underlie the variation. Indeed, across many sockeye salmon populations, egg size is populationspecific and positively correlated with natural incubation temperatures [37] and juvenile thermal tolerance [36]. Heart rate varies considerably both within and between fish species, with resting f H being primarily determined by metabolic rate and haemodynamic requirements, and f Hmax being limited by mechanistic constraints such as pacemaker potential, excitation-contraction properties and myocardium structure [38].…”

Section: Discussionmentioning

confidence: 99%

Indirect genetic effects underlie oxygen-limited thermal tolerance within a coastal population of chinook salmon

et al. 2014

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With global temperatures projected to surpass the limits of thermal tolerance for many species, evaluating the heritable variation underlying thermal tolerance is critical for understanding the potential for adaptation to climate change. We examined the evolutionary potential of thermal tolerance within a population of chinook salmon (Oncorhynchus tshawytscha) by conducting a full-factorial breeding design and measuring the thermal performance of cardiac function and the critical thermal maximum (CT max ) of offspring from each family. Additive genetic variation in offspring phenotype was mostly negligible, although these direct genetic effects explained 53% of the variation in resting heart rate ( f H ). Conversely, maternal effects had a significant influence on resting f H , scope for f H , cardiac arrhythmia temperature and CT max . These maternal effects were associated with egg size, as indicated by strong relationships between the mean egg diameter of mothers and offspring thermal tolerance. Because egg size can be highly heritable in chinook salmon, our finding indicates that the maternal effects of egg size constitute an indirect genetic effect contributing to thermal tolerance. Such indirect genetic effects could accelerate evolutionary responses to the selection imposed by rising temperatures and could contribute to the population-specific thermal tolerance that has recently been uncovered among Pacific salmon populations.

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Section: Discussionmentioning

confidence: 99%

Indirect genetic effects underlie oxygen-limited thermal tolerance within a coastal population of chinook salmon

et al. 2014

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“…In salmonids, data suggest that the inability of f H,max to continue to increase exponentially with temperature may be the initial trigger for the levelling of aerobic scope as T opt is approached (Farrell, 2009;Casselman et al, 2012;Eliason et al, 2013). Here, as in earlier studies (Casselman et al, 2012;Chen et al, 2013;Sidhu et al, 2014), we used pharmacological approaches to generate f H,max and to examine the effect of acute warming. The proximity of T AB (Table 2) and upper T pej (Table 1) contrasts with the previous findings that T AB was closer to either T opt (Casselman et al, 2012) or lower T pej (Ferreira et al, 2014).…”

Section: Metabolic Rates and Aerobic Scopementioning

confidence: 99%

“…More specifically, the questioning was for a fish species (Norin et al, 2014), an amphibian species (Overgaard et al, 2012) and a tropical shrimp (Ern et al, 2014). Yet, aerobic scope, f H,max and CT max have been satisfactorily compared through the studies in goldfish (Ferreira et al, 2014), Danio (Sidhu et al, 2014) and salmonids (Casselman et al, 2012;Chen et al, 2013). Therefore, the present study determined the optimum temperature for aerobic scope (T opt ) and the extent to which aerobic scope diminished at supraoptimal temperatures up to 25°C.…”

Section: Introductionmentioning

confidence: 99%

“…Indeed, recent physiological studies of thermal optima in fish range from warm water temperature species such as coral reef fishes (Nilsson et al, 2009) and Danio (Sidhu et al, 2014), through several temperate salmonid species (Casselman et al, 2012;Anttila et al, 2014;Chen et al, 2013;Verhille et al, 2013) and goldfish, Carassius auratus (Ferreira et al, 2014), to polar species such as the Antarctic nototheniid fish Pagothenia borchgrevinki (Franklin et al, 2007) and Arctic cod, Boreogadus saida (Drost et al, 2014). Limitations to this physiological approach have been questioned in general and rebutted (Pörtner and Giomi, 2013;Farrell, 2013).…”

Section: Introductionmentioning

confidence: 99%

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Selection for upper thermal tolerance in rainbow trout (Oncorhynchus mykissWalbaum)

Chen

Snow

Lawrence

et al. 2015

Journal of Experimental Biology

116

122

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Rainbow trout (Oncorhynchus mykiss Walbaum) in southern Western Australia have undergone passive selection for over 19 generations to survive high water temperatures. Based on the conceptual model of 'oxygen-and capacity-limited thermal tolerance', we measured critical thermal maximum (CT max ), maximum heart rate ( f H,max ) and aerobic scope to test the hypothesis that these rainbow trout can maintain aerobic scope at high temperatures through a robust cardiac performance supporting oxygen delivery. Across five family groups CT max averaged 29.0±0.02°C. Aerobic scope was maximized at 15.8±0.3°C (T opt ), while the upper pejus temperature (T pej , set at 90% of maximum aerobic scope) was 19.9±0.3°C. Although aerobic scope decreased at temperatures above T opt , the value at 25°C remained well over 40% of the maximum. Furthermore, pharmacologically stimulated f H,max increased with temperature, reaching a peak value between 23.5±0.4 and 24.0±0.4°C (T max ) for three family groups. The Arrhenius breakpoint temperature (T AB ) for f H,max was 20.3±0.3 to 20.7±0.4°C, while the average Q 10 breakpoint temperature (T QB , when the incremental Q 10 <1.6) for f H,max was 21.6±0.2 to 22.0±0.4°C. Collectively, f H,max progressively became less temperature dependent beyond 20°C (T AB and T QB ), which coincides with the upper T pej for aerobic scope. Although upper thermal performance indices for both aerobic scope and f H,max were compared among family groups in this population, appreciable differences were not evident. Compared with other populations of rainbow trout, the present assessment is consistent with the prediction that this strain has undergone selection and shows the ability to tolerate higher water temperatures.

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“…Both the aerobic scope (e.g. Brett, 1962;Ultsch et al, 1980;McKenzie et al, 2012;Eliason et al, 2013a;Killen et al, 2014;Del Raye and Weng, 2015) and ƒ H (Stillman, 2002;Blank et al, 2004;Braby and Somero, 2006;Franklin et al, 2007;Sidhu et al, 2014;Chen et al, 2013;Verhille et al, 2013;Anttila et al, 2014;Ferreira et al, 2014) measurements have been reinstituted to investigate the thermal niches of fishes in this era of rapid climate change. We tested the hypothesis that the cardio-respiratory system of B. saida would thermally acclimate at 0.5, 3.5 and 6.5°C.…”

Section: Introductionmentioning

confidence: 99%

Acclimation potential of Arctic cod (Boreogadus saida Lepechin) from the rapidly warming Arctic Ocean

Drost

Carmack

et al. 2016

Journal of Experimental Biology

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As a consequence of the growing concern about warming of the Arctic Ocean, this study quantified the thermal acclimation responses of Boreogadus saida, a key Arctic food web fish. Physiological rates for cardio-respiratory functions as well as critical maximum temperature (T c,max ) for loss of equilibrium (LOE) were measured. The transition temperatures for these events (LOE, the rate of oxygen uptake and maximum heart rate) during acute warming were used to gauge phenotypic plasticity after thermal acclimation from 0.5°C up to 6.5°C for 1 month (respiratory and T c,max measurements) and 6 months (cardiac measurements). T c,max increased significantly by 2.3°C from 14.9°C to 17.1°C with thermal acclimation, while the optimum temperature for absolute aerobic scope increased by 4.5°C over the same range of thermal acclimation. Warm acclimation reset the maximum heart rate to a statistically lower rate, but the first Arrhenius breakpoint temperature during acute warming was unchanged. The hierarchy of transition temperatures was quantified at three acclimation temperatures and was fitted inside a Fry temperature tolerance polygon to better define ecologically relevant thermal limits to performance of B. saida. We conclude that B. saida can acclimate to 6.5°C water temperatures in the laboratory. However, at this acclimation temperature 50% of the fish were unable to recover from maximum swimming at the 8.5°C test temperature and their cardio-respiratory performance started to decline at water temperatures greater than 5.4°C. Such costs in performance may limit the ecological significance of B. saida acclimation potential.

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Optimum and maximum temperatures of sockeye salmon (Oncorhynchus nerka) populations hatched at different temperatures

Cited by 67 publications

References 54 publications

Indirect genetic effects underlie oxygen-limited thermal tolerance within a coastal population of chinook salmon

Indirect genetic effects underlie oxygen-limited thermal tolerance within a coastal population of chinook salmon

Selection for upper thermal tolerance in rainbow trout (Oncorhynchus mykissWalbaum)

Acclimation potential of Arctic cod (Boreogadus saida Lepechin) from the rapidly warming Arctic Ocean

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