How does <i>Drosophila melanogaster</i> overwinter?

Izquierdo, Jose Antonio Avilés

doi:10.1111/j.1570-7458.1991.tb01485.x

Cited by 71 publications

(56 citation statements)

References 28 publications

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“…4). In temperate climates, D. melanogaster is known to survive winters in the adult state, where they are often exposed to temperatures below 10°C for several months (Izequierdo, 1991;Schou et al, 2015), resulting in a longer lifespan (Miquel et al, 1976). This suggests fundamental differences in the type of stress induced by 12°C and 31°C, which is supported by the proteomic data (Figs 2-4 and Table S1).…”

Section: Contrasting Results In Flies Reared At 25°c and 31°csupporting

confidence: 71%

“…However, in their natural habitats, Drosophila melanogaster and other ectotherms are exposed to thermal stress for extended periods e.g. during cold winters or hot summers (Izequierdo, 1991;Rodríguez-Trelles et al, 2013;Schou et al, 2015), making the molecular consequences of longterm exposure of different life stages highly ecologically relevant.…”

Section: Introductionmentioning

confidence: 99%

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Proteomic data reveals a physiological basis for costs and benefits associated with thermal acclimation

Kristensen

Kjeldal

Schou

et al. 2016

Journal of Experimental Biology

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Physiological adaptation through acclimation is one way to cope with temperature changes. Biochemical studies on acclimation responses in ectotherms have so far mainly investigated consequences of short-term acclimation at the adult stage and focussed on adaptive responses. Here, we assessed the consequences of rearing Drosophila melanogaster at low (12°C), benign (25°C) and high (31°C) temperatures. We assessed cold and heat tolerance and obtained detailed proteomic profiles of flies from the three temperatures. The proteomic profiles provided a holistic understanding of the underlying biology associated with both adaptive and non-adaptive temperature responses. Results show strong benefits and costs across tolerances: rearing at low temperature increased adult cold tolerance and decreased adult heat tolerance and vice versa with development at high temperatures. In the proteomic analysis, we were able to identify and quantify a large number of proteins compared with previous studies on ectotherms (1440 proteins across all replicates and rearing regimes), enabling us to extend the proteomic approach using enrichment analyses. This gave us detailed information on individual proteins, as well as pathways affected by rearing temperature, pinpointing potential mechanisms responsible for the strong costs and benefits of rearing temperature on functional phenotypes. Several well-known heat shock proteins, as well as proteins not previously associated with thermal stress, were among the differentially expressed proteins. Upregulation of proteasome proteins was found to be an important adaptive process at high-stress rearing temperatures, and occurs at the expense of downregulation of basal metabolic functions.

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Section: Contrasting Results In Flies Reared At 25°c and 31°csupporting

confidence: 71%

Section: Introductionmentioning

confidence: 99%

Proteomic data reveals a physiological basis for costs and benefits associated with thermal acclimation

Kristensen

Kjeldal

Schou

et al. 2016

Journal of Experimental Biology

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“…As noted by Izquieredo (1991), immatures die at di¡erent stages of development over winter and none survive to the adult stage. Thus, we found no evidence for adaptation involving egg-to-adult viability, despite genetic variation for this trait in the laboratory (Tucic 1979 It is not clear why late egg production is relatively higher in temperate populations.…”

Section: Discussionmentioning

confidence: 99%

“…We test for clinal shifts in survival and reproductive patterns over winter, which is the most stressful condition seasonally experienced by D. melanogaster in temperate areas, as evidenced by marked reductions in population size (McKenzie & Parsons 1974;Nielsen & Ho¡mann 1985). D. melanogaster overwinters at the adult stage (Izquieredo 1991), possibly aided by a reproductive diapause triggered when the adults are recently eclosed (Saunders et al 1989). Thus, overwintering in D. melanogaster provides an opportunity to test for adaptive clinal variation in reproductive patterns and survival in adults.…”

Section: Introductionmentioning

confidence: 99%

Postponed reproduction as an adaptation to winter conditions inDrosophila melanogaster: evidence for clinal variation under semi-natural conditions

Mitrovski

Hoffmann

2001

Proc. R. Soc. Lond. B

106

133

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Patterns of climatic adaptation in drosophila and other insects have largely been inferred from laboratory comparisons of traits that vary clinally. Here, we extend this research to comparisons under seminatural conditions. To test for clinal variation in reproductive patterns and survival over winter, Drosophila melanogaster populations were initiated from seven collection sites along the eastern coast of Australia, ranging from tropical to temperate regions. The fecundity and survival of these populations were monitored in ¢eld cages at a temperate location until all adults had died more than 5 months later. Total fecundity showed a curvilinear relationship with latitude, due to higher egg production by high-and low-latitude populations. Adults from temperate locations survived winter conditions better than those from subtropical populations but not tropical ones. There was a linear cline in the timing of egg production: temperate populations produced eggs later than populations from lower latitudes. This cline is likely to be adaptive because egg-to-adult viability experiments indicated that only eggs laid in spring developed successfully to the adult stage. There was no evidence for climatic adaptation in the immature stages. The adult mortality rate increased gradually over winter, and in some populations was also correlated with the minimum ambient temperature. These results indicate that adaptation to winter conditions in D. melanogaster has involved shifts in reproductive patterns.

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“…paternal, maternal, developmental and laying temperature) are routinely experienced by developing D. melanogaster in nature (McKenzie, 1975;Parsons, 1978;Jones et a!., 1987;Izquierdo, 1991). Thus our experimental results should be ecologically relevant.…”

Section: *Correspondencementioning

confidence: 99%

Within- and between-generation effects of temperature on early fecundity of Drosophila melanogaster

et al. 1995

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We used a repeated-measures, four-factor experimental design to determine how the fecundity of Drosophila melanogaster during the first 5 days of adult life was influenced by paternal, maternal, developmental and laying temperature, with two different temperature levels (18°C vs. 25°C) per factor. Laying temperature had by far the largest effect on fecundity and accounted for 79 per cent of the variance in overall fecundity: flies laying at 25°C began laying eggs about a day earlier and had much higher daily fecundities than did those laying at 18°C. Developmental temperature had no significant effect either on overall fecundity or on the pattern of daily egg production. Dam temperature had a slight effect on the pattern of daily egg production, but not on overall fecundity. In contrast, sire temperature slightly influenced both overall fecundity and the pattern of daily egg production. Our results demonstrate that early fecundity is extraordinarily sensitive to laying temperature (360 per cent increase if laying at 25°C vs. at 18°C), but is relatively well buffered against developmental and cross-generational effects (maximum effect only 7 per cent, for sire temperature).

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How does Drosophila melanogaster overwinter?

Cited by 71 publications

References 28 publications

Proteomic data reveals a physiological basis for costs and benefits associated with thermal acclimation

Proteomic data reveals a physiological basis for costs and benefits associated with thermal acclimation

Postponed reproduction as an adaptation to winter conditions inDrosophila melanogaster: evidence for clinal variation under semi-natural conditions

Within- and between-generation effects of temperature on early fecundity of Drosophila melanogaster

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