Changes in temperature tolerance during the life cycle of Calliphora erythrocephala

Davison, T.F.

doi:10.1016/0022-1910(69)90138-3

Cited by 54 publications

(24 citation statements)

References 13 publications

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“…Because thermal tolerance is generally assessed in young rather than old phenotypes, age-related variation may confound studies of temperature responses if unaccounted for, an issue not often recognised in experimental design (Pappas et al, 2007;Bowler and Terblanche, 2008). A rapid decline of heat tolerance at young age had previously been reported in holometabolous insects (Bowler, 1967;Bowler and Hollingsworth, 1965;Davison, 1969;Krebs et al, 1998;Sørensen and Loeschcke, 2002;Pappas et al, 2007); however, it was not known whether this within-stage variation was specific to heat tolerance or if it also applied to cold tolerance. We found that cold tolerance drastically declined at young age.…”

Section: Discussionmentioning

confidence: 99%

“…For instance, heat tolerance is typically high at eclosion, then it decreases dramatically at young age to a stable lower level; therefore, it is not a senescence effect per se (Bowler, 1967;Bowler and Hollingsworth, 1965). There are a number of reports for rapid decline of heat tolerance in holometabolous insects (Bowler, 1967;Bowler and Hollingsworth, 1965;Davison, 1969;Krebs et al, 1998;Sørensen and Loeschcke, 2002;Pappas et al, 2007). The rate of this process is temperaturedependent (Davison, 1969), so that it may, in some cases, obscure the effect of thermal acclimation.…”

Section: Introductionmentioning

confidence: 99%

“…There are a number of reports for rapid decline of heat tolerance in holometabolous insects (Bowler, 1967;Bowler and Hollingsworth, 1965;Davison, 1969;Krebs et al, 1998;Sørensen and Loeschcke, 2002;Pappas et al, 2007). The rate of this process is temperaturedependent (Davison, 1969), so that it may, in some cases, obscure the effect of thermal acclimation. This was the case in the blowfly, where an apparent paradoxical effect of acclimation was found, with young flies maintained at low temperatures being more heattolerant than counterparts maintained at high temperature (Davison, 1969).…”

Section: Introductionmentioning

confidence: 99%

“…The rate of this process is temperaturedependent (Davison, 1969), so that it may, in some cases, obscure the effect of thermal acclimation. This was the case in the blowfly, where an apparent paradoxical effect of acclimation was found, with young flies maintained at low temperatures being more heattolerant than counterparts maintained at high temperature (Davison, 1969). It is not known whether this biological variation is specific to heat tolerance or whether it also impacts on cold tolerance.…”

Section: Introductionmentioning

confidence: 99%

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Rapid decline of cold tolerance at young age is associated with expression of stress genes in Drosophila melanogaster

Colinet

Siaussat

Bozzolan

et al. 2012

Journal of Experimental Biology

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SUMMARYMany endogenous factors influence thermal tolerance of insects. Among these, age contributes an important source of variation. Heat tolerance is typically high in newly eclosed insects, before declining dramatically. It is not known whether this phenomenon relates to cold tolerance also. In addition, the underlying mechanisms of this variation are unresolved. In this study, we tested whether cold tolerance declines in Drosophila melanogaster females aged from 0 to 5days. We also assessed whether expression (basal and induced) of eight stress genes (hsp22, hsp23, hsp40, hsp68, hsp70Aa, hsp83, Starvin and Frost) varied post-eclosion in correspondence with changes found in cold tolerance. We report that cold tolerance was very high at eclosion and then it rapidly declined in young flies. hsp23 and hsp68 showed a dramatic age-related variation of basal expression that was associated with cold tolerance proxies. Significant age-related plasticity of cold-induced expression was also found for hsp22, hsp23, hsp68, hsp70Aa, Frost and Starvin. Induced expression of hsp22 and hsp70Aa was high in newly enclosed phenotypes before declining dramatically, whilst opposite age-related patterns were found for hsp23, hsp68, Starvin and Frost. This study shows a marked within-stage variation in cold tolerance. The involvement of the stress genes in setting basal thermal tolerance is discussed.Supplementary material available online at http://jeb.biologists.org/lookup/suppl

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Rapid decline of cold tolerance at young age is associated with expression of stress genes in Drosophila melanogaster

Colinet

Siaussat

Bozzolan

et al. 2012

Journal of Experimental Biology

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“…For instance, a butterfly may have a sessile egg phase on one host plant, a motile larval phase on the same plant, a sessile pupal phase in the soil and a flying adult phase. Each life-cycle stage may thus experience different thermal environments (especially if stages are non-overlapping in time [152]) and may even have quite different thermal sensitivities and behavioural options [125,151,[153][154][155][156][157]. For such species, predictions of the impact of climate warming thus require consideration of the vulnerability of each life-cycle stage [52,125,158], especially on development [47].…”

Section: Physiological Sensitivity (A) Physiological Traits Dictatingmentioning

confidence: 99%

Predicting organismal vulnerability to climate warming: roles of behaviour, physiology and adaptation

Huey

Kearney

Krockenberger

et al. 2012

Phil. Trans. R. Soc. B

1,183

1,249

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A recently developed integrative framework proposes that the vulnerability of a species to environmental change depends on the species' exposure and sensitivity to environmental change, its resilience to perturbations and its potential to adapt to change. These vulnerability criteria require behavioural, physiological and genetic data. With this information in hand, biologists can predict organisms most at risk from environmental change. Biologists and managers can then target organisms and habitats most at risk. Unfortunately, the required data (e.g. optimal physiological temperatures) are rarely available. Here, we evaluate the reliability of potential proxies (e.g. critical temperatures) that are often available for some groups. Several proxies for ectotherms are promising, but analogous ones for endotherms are lacking. We also develop a simple graphical model of how behavioural thermoregulation, acclimation and adaptation may interact to influence vulnerability over time. After considering this model together with the proxies available for physiological sensitivity to climate change, we conclude that ectotherms sharing vulnerability traits seem concentrated in lowland tropical forests. Their vulnerability may be exacerbated by negative biotic interactions. Whether tropical forest (or other) species can adapt to warming environments is unclear, as genetic and selective data are scant. Nevertheless, the prospects for tropical forest ectotherms appear grim.

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Changes in the functional efficiency of flight muscle sarcosomes during heat death of adult Calliphora erythrocephala

Davison

Bowler

1971

Journal Cellular Physiology

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The temperature sensitivity of flight muscle mitochondria from adult Calliphora erythrocephala has been studied. Intact flies were treated to sublethal and lethal high temperatures, their sarcosomes were isolated and the efficiency of the coupling of oxidation and phosphorylation was measured. The temperature sensitivity of sarcosomes is correlated with the heat death point of the intact animal and the impairment of oxidative phosphorylation with a-glycerophosphate suggests that a breakdown in ATP synthesis may be one of the causes of heat death. Restitution of enzyme activity was observed in mitochondria isolated from flies recovering from sublethal heat treatment. The results suggest that the impairment of membrane-enzyme complexes may be important lesions in heat death.

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Changes in temperature tolerance during the life cycle of Calliphora erythrocephala

Cited by 54 publications

References 13 publications

Rapid decline of cold tolerance at young age is associated with expression of stress genes in Drosophila melanogaster

Rapid decline of cold tolerance at young age is associated with expression of stress genes in Drosophila melanogaster

Predicting organismal vulnerability to climate warming: roles of behaviour, physiology and adaptation

Changes in the functional efficiency of flight muscle sarcosomes during heat death of adult Calliphora erythrocephala

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