Control of the adult reproductive potential by preimaginal thermal conditions

Cohet, Y.; David, Jean R.

doi:10.1007/bf00348055

Cited by 98 publications

(83 citation statements)

References 27 publications

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“…Thirdly, it is inconsistent with the 'optimal developmental temperature hypothesis,' which proposes that flies raised at or near 25°C are vigorous (and hence more fecund) than are flies raised at other temperatures (Cohet & David, 1978;David et a!., 1983;Zamudio et a!., 1994). Flies raised at 25°C did lay about 5 per cent more eggs than those raised at 18°C (Fig.…”

Section: Discussionmentioning

confidence: 98%

“…David et al, 1983) and that large females are often relatively fecund (Robertson, 1957). Fecundity is, however, clearly reduced following development at extreme temperatures (Lints & Lints, 1971;McKenzie, 1978;Cohet & David, 1978). Cohet & David (1978) showed that this reduction reflects either low ovariole number (at high developmental temperature) or a lower rate of oogenesis (at low developmental temperature).…”

Section: Discussionmentioning

confidence: 99%

“…Even s, the patterns we detected might well hold for lifetime fecundity. Life span is sensitive to developmental temperature (Lints & Lints, 1971;Cohet & David, 1978;Zwaan eta!., 1992); however, the duration of the laying phase is remarkably independent of developmental temperature between 14° and 28°C (Cohet & David, 1978).…”

Section: Potential Confounding Factorsmentioning

confidence: 99%

“…Fecundity is also strongly influenced by environmental factors such as crowding and temperature (Robertson & Sang, 1944;David et al, 1983). Fecundity in Drosophila, for example, may depend not only on the temperature a female experiences as adult (Dobzhansky, 1935;David et al, 1983), but also on the temperature she experienced during development: thus females raised at extremely low or high temperatures are typically less fecund than are females raised at intermediate temperatures (Lints & Lints, 1971;Cohet & David, 1978;McKenzie, 1978).…”

Section: Introductionmentioning

confidence: 99%

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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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Section: Discussionmentioning

confidence: 98%

Section: Discussionmentioning

confidence: 99%

Section: Potential Confounding Factorsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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

et al. 1995

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“…The narrow interval indicates that the mechanism may be biochemically based. This could mean that the determining mechanism that causes sterility is simple like the denaturation of a protein as proposed by Cohet and David (1978). The cell defends itself from protein denaturation by expressing molecular chaperones called heat-shock proteins (Hsps).…”

Section: Discussionmentioning

confidence: 99%

Heat and cold-induced male sterility in Drosophila buzzatii: genetic variation among populations for the duration of sterility

et al. 2003

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Here we studied three phenotypic traits in Drosophila buzzatii that are strongly effected by temperature, and are expected to be closely associated with fitness in nature. The traits measured were thermal threshold of male sterility, time for males to gain fertility when reared at a sterility-inducing temperature and transferred to 251C on eclosion and survival after development. The last two traits were measured under four temperature regimes, constant 121C, 251C, 311C, and fluctuating 251C (18 h) and 381C (6 h). We looked for genetic variation in these traits and relations among them in four lines of D. buzzatii originating from Argentina and Tenerife. The thermal threshold of heat-induced male sterility was found to lie within the range of 30.0-31.01C. When measuring the time for males to gain fertility, males reared at a nonstressful temperature (251C) were fertile 58-67 h after emergence with only minor differences among lines. When reared constant 311C, males were fertile 174-225 h after hatching. The Argentinean lines were significantly faster in recovering from sterility than were the lines from Tenerife. When reared in a fluctuating temperature regime, differences among lines increased, dividing the lines into three significantly different groups, with a sterility period of 135-215 h. When reared at 121C from the pupal stage, males were fertile after 106-130 h with significant difference in the variance but not in the mean duration of sterility. Significant differences in viability were found among development temperatures, but not among lines, and viability and the duration of sterility seem to be genetically independent.

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Phenotypic Plasticity: Molecular Mechanisms and Adaptive Significance

Kelly

Panhuis

Stoehr

2012

Comprehensive Physiology

222

154

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Phenotypic plasticity can be broadly defined as the ability of one genotype to produce more than one phenotype when exposed to different environments, as the modification of developmental events by the environment, or as the ability of an individual organism to alter its phenotype in response to changes in environmental conditions. Not surprisingly, the study of phenotypic plasticity is innately interdisciplinary and encompasses aspects of behavior, development, ecology, evolution, genetics, genomics, and multiple physiological systems at various levels of biological organization. From an ecological and evolutionary perspective, phenotypic plasticity may be a powerful means of adaptation and dramatic examples of phenotypic plasticity include predator avoidance, insect wing polymorphisms, the timing of metamorphosis in amphibians, osmoregulation in fishes, and alternative reproductive tactics in male vertebrates. From a human health perspective, documented examples of plasticity most commonly include the results of exercise, training, and/or dieting on human morphology and physiology. Regardless of the discipline, phenotypic plasticity has increasingly become the target of a plethora of investigations with the methodological approaches utilized ranging from the molecular to whole organsimal. In this article, we provide a brief historical outlook on phenotypic plasticity; examine its potential adaptive significance; emphasize recent molecular approaches that provide novel insight into underlying mechanisms, and highlight examples in fishes and insects. Finally, we highlight examples of phenotypic plasticity from a human health perspective and underscore the use of mouse models as a powerful tool in understanding the genetic architecture of phenotypic plasticity.

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Control of the adult reproductive potential by preimaginal thermal conditions

Cited by 98 publications

References 27 publications

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

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

Heat and cold-induced male sterility in Drosophila buzzatii: genetic variation among populations for the duration of sterility

Phenotypic Plasticity: Molecular Mechanisms and Adaptive Significance

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