Cardiac adaptations to low temperature in non‐polar teleost fish

Driedzic, William R.; Bailey, John R.; Sephton, Dawn H.

doi:10.1002/(sici)1097-010x(19960601/15)275:2/3<186::aid-jez10>3.3.co;2-t

Cited by 17 publications

(26 citation statements)

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“…Resting values were 9.0 mL · min Ϫ1 · kg Ϫ1 for CO, 7.6 beats/min for HR, and 1.22 mL/kg for SV. Values in our study (all at temperatures higher than 3ЊC) were consistently higher for CO and HR but lower for SV, probably because of ventricular hypertrophy at 3ЊC (Driedzic et al 1996). Indeed, in our study RVMs were similar across a range of temperatures (RVMs about 0.07-0.08), but Cooke et al (2003) observed RVMs at 3ЊC that were about 20% heavier than those in our study.…”

Section: Discussionsupporting

confidence: 45%

Cardiovascular Responses of Largemouth Bass to Exhaustive Exercise and Brief Air Exposure over a Range of Water Temperatures

et al. 2003

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In this study we examined the effects of exhaustive exercise and brief air exposure on the cardiovascular function of largemouth bass Micropterus salmoides at four water temperatures (13, 17, 21, and 25°C). We used Doppler flow probes to monitor cardiac output and its components (i.e., stroke volume and heart rate) while we manually chased fish to exhaustion to simulate angling, exposed them to air for 30 s, and then recorded patterns of recovery. Resting cardiac variables generally increased with increasing water temperature except for stroke volume, which was temperature independent. Fish heart rate became erratic during exercise, and during air exposure fish exhibited severe bradycardia before becoming tachycardic when returned to the water. Maximal change occurred most rapidly for cardiac output (about 5 min). Several minutes later, changes in heart rate (increase) and stroke volume (decrease) simultaneously reached maximal deviations from resting values. Cardiac output and heart rate increased 150–200% relative to resting values despite 50% reductions in stroke volume, suggesting that largemouth bass are primarily frequency modulators. Maximal changes generally increased with water temperature for cardiac output and heart rate but not for stroke volume, resulting in heightened scope for cardiac output and heart rate with increasing water temperature. Recovery patterns were not influenced by water temperature. Cardiac output and heart rate generally returned to predisturbance levels in approximately 135 min, whereas stroke volume recovered more rapidly (about 110 min). Based on these findings, we suggest that largemouth bass exposed to exhaustive exercise and brief air exposure are capable of recovering from handling disturbances in several hours across the range of water temperatures that we examined (13–25°C).

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Section: Discussionsupporting

confidence: 45%

Cardiovascular Responses of Largemouth Bass to Exhaustive Exercise and Brief Air Exposure over a Range of Water Temperatures

et al. 2003

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“…In this and previous studies it has been shown that crucian carp, coldadaptation induces depression of cardiac function (Matikainen & Vornanen, 1992;Vornanen, 1994b), whereas in rainbow trout cold-acclimation induces positive thermal compensation (Driedzic et al, 1996). Therefore, it seems that in cold-active (rainbow trout) and cold-dormant species (crucian carp) responses of the heart to cold exposure are in several respects opposite (positive compensation v. inverse compensation) and physiologically meaningful in regard to the activity pattern of the fishes.…”

supporting

confidence: 60%

“…To support an active life style at low temperatures, compensatory changes in the function of swimming muscles and in the cardiovascular system are necessary (Rome et al, 1985;Driedzic et al, 1996). In accordance with this, cold-acclimation improves atrial and ventricular contractility and increases the activity of myofibrillar ATPase in the cold-active rainbow trout Oncorhynchus mykiss (Walbaum) (Aho & Vornanen, 1999).…”

Section: Introductionmentioning

confidence: 99%

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Cold adaptation suppresses the contractility of both atrial and ventricular muscle of the crucian carp heart

Tittu

Vornanen

2001

Journal of Fish Biology

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Adaptation to low temperature in crucian carp Carasius carassius increases twitch duration both in atrial and ventricular muscle and the response is largely explained by a temperatureinduced reduction in myofibrillar ATPase activity. The prolonged twitch increases the refractoriness of both atrial and ventricular muscle, i.e. the optimal force development is achieved at longer diastolic intervals after acclimation to cold. The contractions of atrial and ventricular muscle are insensitive to 10  ryanodine, an inhibitor of SR release Ca 2+ channel but sensitive to 20  verapamil, a blocker of L-type Ca 2+ channels. This suggests that E-C-coupling in the crucian carp heart is exclusively based on extracellular Ca 2+ sources. The present findings indicate that cold-acclimation slows the contraction kinetics of the crucian carp heart and thereby preconditions the cardiac muscle for a low energy supply during winter anoxic conditions. 2001 The Fisheries Society of the British Isles

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“…Results from early physiological and biochemical studies have indicated that fishes may adapt to temperature variation through “biochemical restructuring”, namely changing the quantities of certain molecular species and the types of molecules present in the cells [11]. Many aspects of cellular biochemistry are involved in this restructuring process and well-defined adaptive responses include producing temperature specific isozymes [11], [12], changing the content of membrane lipid and the degree of fatty acid unsaturation [13], recruiting different muscle fiber types [14], synthesizing molecular chaperones [15], [16], changing mitochondrial densities and their properties [17], [18], and generating antifreeze protein during long-term evolutionary adaptation to freezing environment [19]. Obviously, these findings have elucidated the biochemical basis of adaptive responses to temperature stresses in fish.…”

Section: Introductionmentioning

confidence: 99%

Transcriptomic Characterization of Temperature Stress Responses in Larval Zebrafish

et al. 2012

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Temperature influences nearly all biochemical, physiological and life history activities of fish, but the molecular mechanisms underlying the temperature acclimation remains largely unknown. Previous studies have identified many temperature-regulated genes in adult tissues; however, the transcriptional responses of fish larvae to temperature stress are not well understood. In this study, we characterized the transcriptional responses in larval zebrafish exposed to cold or heat stress using microarray analysis. In comparison with genes expressed in the control at 28°C, a total of 2680 genes were found to be affected in 96 hpf larvae exposed to cold (16°C) or heat (34°C) for 2 and 48h and most of these genes were expressed in a temperature-specific and temporally regulated manner. Bioinformatic analysis identified multiple temperature-regulated biological processes and pathways. Biological processes overrepresented among the earliest genes induced by temperature stress include regulation of transcription, nucleosome assembly, chromatin organization and protein folding. However, processes such as RNA processing, cellular metal ion homeostasis and protein transport and were enriched in genes up-regulated under cold exposure for 48 h. Pathways such as mTOR signalling, p53 signalling and circadian rhythm were enriched among cold-induced genes, while adipocytokine signalling, protein export and arginine and praline metabolism were enriched among heat-induced genes. Although most of these biological processes and pathways were specifically regulated by cold or heat, common responses to both cold and heat stresses were also found. Thus, these findings provide new interesting clues for elucidation of mechanisms underlying the temperature acclimation in fish.

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Cardiac adaptations to low temperature in non‐polar teleost fish

Cited by 17 publications

References 0 publications

Cardiovascular Responses of Largemouth Bass to Exhaustive Exercise and Brief Air Exposure over a Range of Water Temperatures

Cardiovascular Responses of Largemouth Bass to Exhaustive Exercise and Brief Air Exposure over a Range of Water Temperatures

Cold adaptation suppresses the contractility of both atrial and ventricular muscle of the crucian carp heart

Transcriptomic Characterization of Temperature Stress Responses in Larval Zebrafish

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