A Comparison of Seasonal Lipid Changes in Two Populations of Brook Char (Salvelinus fontinalis)

Nelson, Garrett B.; McPherson, R

doi:10.2307/2425715

Cited by 12 publications

(13 citation statements)

References 14 publications

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“…In seasonal environments, smaller fish might require a larger amplitude lipid cycling strategy to survive winter in seasonal environments, due to their faster mass-specific metabolism and their consequently rapid depletion and recovery of lipid stores (Nelson and McPherson 1987, Clarke and Johnston 1999, Brown et al 2004, Killen et al 2010. This negative allometric scaling of lipid cycling (represented by CV lipid ) parallels the expected relationship between body size and mass-specific metabolic rates.…”

Section: Body Sizementioning

confidence: 87%

“…For example, among the four brook trout populations included in our analyses, the population with the largest maximum body size and lowest CV lipid inhabited a high productivity habitat (Fishing Creek, Pennsylvania; Nelson and McPherson 1987). This suggests the across-species effect of body size was not confounded by across-species differences in environmental conditions.…”

Section: Environment and Local Effectsmentioning

confidence: 94%

“…Specifically, mature individuals of cold water species had significantly higher carcass CV lipid than mature individuals of cool water species. Cold water fish, on the other hand, would experience a decline in the relative contribution of lipid rich gonadal tissue in early winter after fall spawning (Nelson andMcPherson 1987, Berg et al 2000) and be forced to recover lost lipids by foraging in colder, potentially Figure 7. Many cool water species, like yellow perch and walleye, maintain ripe, lipid-rich gonads throughout much of the winter for the purposes of spring spawning (Moles et al 2008).…”

Section: Timing and Magnitude Of Lipid Storage And Depletionmentioning

confidence: 99%

“…Spring spawning fish might also replenish lipids rapidly post spawn, because spawning occurs just before the peak production pulse (Shuter et al 2012). Cold water fish, on the other hand, would experience a decline in the relative contribution of lipid rich gonadal tissue in early winter after fall spawning (Nelson andMcPherson 1987, Berg et al 2000) and be forced to recover lost lipids by foraging in colder, potentially more light-and resource-limited winter environments (Cunjak 1988, Shuter et al 2012. Spawn times that occur after the period of peak production might therefore explain the higher magnitude of lipid cycling in cold water fish.…”

Section: Timing and Magnitude Of Lipid Storage And Depletionmentioning

confidence: 99%

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Coping with the cold: energy storage strategies for surviving winter in freshwater fish

Fernandes

McMeans

2019

Ecography

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For many ectothermic animals, the acquisition, storage and depletion of lipids is integral to successfully coping with reduced metabolic rates and activity levels associated with cold, winter periods. In fish, lipids are crucial for overwinter survival and successful reproduction. The timing and magnitude of seasonal lipid storage should therefore vary predictably among fish with different thermal preferences and spawn times. Small-and large-bodied fish should also face different constraints associated with season that influence lipid cycling. However, much work to date has been species-and location-specific and a general conceptual model for the seasonal energy budgets of freshwater fish is lacking. Here, we conducted a comprehensive literature review of seasonal lipid levels in freshwater fishes. We predicted that warm and cool water species would be more likely to demonstrate peak lipid levels during warm months than cold water species, and expected a larger magnitude of annual lipid cycling in warm and cool water compared to cold water fish. We also expected dampened lipid cycling in larger fish due to their lower mass-specific metabolic rates. Observed patterns in the timing and magnitude of lipid storage contradicted our prediction because lipid cycling was widespread across species, despite thermal guild, with peak lipid levels commonly occurring during warmer months, even in cold water fish. For body size effects, larger bodied fish species had dampened seasonal lipid cycling, as predicted. We developed a conceptual framework describing how the 'scope' for variation in annual lipid cycling changes with body size both among and within species in order to guide future work. Together, our findings suggest that energy acquired during warm months is broadly important for overwinter survival and reproduction in fishes, and provide a new perspective on the differential constraints and physiological responses to seasonality among freshwater fish. Improving our understanding of these dynamics is especially pressing given that a changing global climate is anticipated to alter existing seasonal signals.

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Section: Body Sizementioning

confidence: 87%

Section: Environment and Local Effectsmentioning

confidence: 94%

Section: Timing and Magnitude Of Lipid Storage And Depletionmentioning

confidence: 99%

Section: Timing and Magnitude Of Lipid Storage And Depletionmentioning

confidence: 99%

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Coping with the cold: energy storage strategies for surviving winter in freshwater fish

Fernandes

McMeans

2019

Ecography

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“…Strong seasonal factors include temperature, nutrition, reproductive state, photoperiod, and social interactions, including competition for food and spawning behavior (Seddon and Prosser 1997). Condition indices and energy reserves fluctuate seasonally and reflect changes in feeding activity, nutrient availability, and sexual maturation (Adams and McLean 1985;Nelson and McPherson 1987;Jonas et al 1996).…”

Section: Introductionmentioning

confidence: 99%

Seasonal variations in tissue metabolic capacities of yellow perch (Perca flavescens) from clean and metal-contaminated environments

Audet¹,

Couture²

2003

Can. J. Fish. Aquat. Sci.

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This study examined seasonal variations in tissue metal contamination and physiological condition of yellow perch (Perca flavescens) from a clean lake (Halfway Lake) and a metal-contaminated environment (Whitson Lake) in spring, summer, and fall of 1999. Dietary metal content influenced liver metal concentrations, especially for cadmium. Fulton's condition factor (FCF), an indicator of recent feeding activity, was lower in Whitson fish except in summer, when higher FCF values corresponded with higher liver copper concentrations, presumably because of higher feeding rate. Tissue protein concentrations and indicators of biosynthetic capacities (nucleoside diphosphate kinase and RNA/DNA ratios) suggested lower biosynthesis in Whitson fish. Muscle aerobic and anaerobic capacities (using citrate synthase and lactate dehydrogenase as indicators, respectively) were consistently lower in Whitson fish, with maximal differences in summer. In contrast, although liver aerobic capacities were generally comparable among populations, anaerobic capacities were much higher in Whitson fish. Finally, gill sodium/potassium adenosinetriphosphatase (Na + /K + ATPase) activity peaked in the spring in fish from both lakes, and higher activities were correlated with elevated gill copper concentrations. This study highlights the importance of seasonal variations in tissue metal concentrations and fish condition. This information is essential to evaluate the extent of impairment in condition faced by metalcontaminated wild fish.Résumé : Nous avons examiné les variations saisonnières de la contamination des tissus par les métaux et de la condition physiologique de perchaudes (Perca flavescens) d'un milieu propre (lac Halfway) et d'un milieu contaminé par les métaux (lac Whitson) au printemps, à l'été et à l'automne 1999. Le contenu en métaux du régime alimentaire influence la concentration hépatique des métaux, en particulier du cadmium. Le coefficient de condition de Fulton (FCF), un indicateur d'activité alimentaire récente, est plus bas chez les poissons du lac Whitson, sauf en été, lorsque les valeurs plus élevées de FCF correspondent à des concentrations plus élevées de cuivre hépatique, sans doute à cause d'un taux d'alimentation plus grand. Les concentrations tissulaires de protéines et les indicateurs du potentiel de biosynthèse (la nucléoside diphosphate kinase et les rapports ARN/ADN) laissent croire à une réduction de la biosynthèse chez les poissons du lac Whitston. Les capacités musculaires aérobies et anaérobies (mesurées respectivement d'après les concentrations de citrate synthase et de lactate déshydrogénase) sont toujours plus basses chez les poissons du lac Whitson et les écarts sont maximaux en été. En revanche, bien que les capacités hépatiques aérobies soient, en général, semblables chez les deux populations, les capacités anaérobies sont beaucoup plus fortes chez les poissons du lac Whitson. Enfin, l'activité de la sodium/potassium adénosinetriphosphatase (ATPase) dans les branchies est maximale au printemps chez les ...

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Seasonal cycles of reserves in relation to reproduction in Sebastes

Larson

1991

Rockfishes of the Genus Sebastes: Their Reproduction and Early Life History

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SynopsisSeasonal cycles of reserve deposition and utilization in many fishes, amphibians and reptiles alleviate temporal mismatches of energy supply and demand. Utilization of reserves can be related to maintenance during periods of reduced food supply, to reproduction, particularly during periods of poor food availability, and to migration. Published data on the seasonal cycles of reserves and reproduction in Sebastes suggest that reserves are important for maintenance during wintertime periods of low food availability. Unlike many other ectothermic vertebrates, some species of Sebastes deposit fat reserves at the same time as gametogenesis, a pattern consistent with the longevity and iteroparity evident in the genus. Other species of Sebastes have similar seasonal timing of fat cycles, but since reproduction takes place later in the year, the decline in reserves during winter coincides with the main period of reproductive activity. The significance of this is not clear. Interspecific differences in amounts of reserves may be related to geographical differences in the seasonality or abundance of food. Intraspecific variation in reserves, marked most strongly by allometry of reserves with regard to fish length, bears further study, since it may link the proces of sexual maturation and the responses of repeat spawners to variability in food supply and other environmental factors. IntroductionIn many animals some assimilated food is allocated to reserves rather than to immediate use, in what is generally seen as a means of ameliorating temporal mismatches between food supply and energy demand (Love 1970, Shul'man 1974, Derickson 1976b, King & Murphy 1985. The particular proximate function of reserves is often indicated by the timing of reserve deposition and utilization in relation to temporal changes in environmental factors and physiological demands. Knowledge of that function can contribute to an understanding of the important factors in the relationship of an organism to its environment. The deposition and use of reserves are also important in the overall allocation of energy in an organism and thus have an ultimate function in its demography and life history. In the latter regard, costs of reserve deposition, in terms of other immediate uses to which the energy could have been applied (Slobodkin 1962, Calow 1977, are balanced against the benefits of reserve utilization, and the trade-offs are evaluated in the context of the allocation of resources to current versus future reproduction (Fisher 1958).The purpose of this paper is to describe ways that knowledge of the patterns of reserve deposition and utilization can contribute to our understanding of the ecology and life history of Sebastes. To that end, I will present some background on the functions of reserves in ectothermic vertebrates, including complications in the interpretation of these 58 functions, and then discuss past and potential future work on the role of reserves in the ecology and life history of Sebastes species. Functions of reserves in ectot...

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A Comparison of Seasonal Lipid Changes in Two Populations of Brook Char (Salvelinus fontinalis)

Cited by 12 publications

References 14 publications

Coping with the cold: energy storage strategies for surviving winter in freshwater fish

Coping with the cold: energy storage strategies for surviving winter in freshwater fish

Seasonal variations in tissue metabolic capacities of yellow perch (Perca flavescens) from clean and metal-contaminated environments

Seasonal cycles of reserves in relation to reproduction in Sebastes

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