Seasonal variability of the embryonic development time of three planktonic crustaceans: dependence on temperature, adult size, and egg weight

Berberovic, Ranka; Bikar, Klaus; Geller, Walter

doi:10.1007/bf00005681

Cited by 8 publications

(4 citation statements)

References 26 publications

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“…Most species of crustaceans that exhibit seasonal variation in progeny size produce larger progeny in winter (15,30,33,93,123,130,155,187,196,231), although some species produce larger progeny in summer (15), and others show some other seasonal pattern (15). In some species, females may be responding primarily to temperature, but it is unclear whether the responses are adaptations to temperature itself, non-adaptive physiological responses to temperature, or whether temperature is used as a cue to predict some other environmental condition.…”

Section: Seasonal Variationmentioning

confidence: 99%

Evolutionary Ecology of Progeny Size in Arthropods

Fox

Czesak

2000

Annu. Rev. Entomol.

724

857

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Most models of optimal progeny size assume that there is a trade-off between progeny size and number, and that progeny fitness increases with increasing investment per young. We find that both assumptions are supported by empirical studies but that the trade-off is less apparent when organisms are iteroparous, use adult-acquired resources for reproduction, or provide parental care. We then review patterns of variation in progeny size among species, among populations within species, among individuals within populations, and among progeny produced by a single female. We argue that much of the variation in progeny size among species, and among populations within species, is likely due to variation in natural selection. However, few studies have manipulated progeny environments and demonstrated that the relationship between progeny size and fitness actually differs among environments, and fewer still have demonstrated why selection favors different sized progeny in different environments. We argue that much of the variation in progeny size among females within populations, and among progeny produced by a single female, is probably nonadaptive. However, some species of arthropods exhibit plasticity in progeny size in response to several environmental factors, and much of this plasticity is likely adaptive. We conclude that advances in theory have substantially outpaced empirical data. We hope that this review will stimulate researchers to examine the specific factors that result in variation in selection on progeny size within and among populations, and how this variation in selection influences the evolution of the patterns we observe.

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Section: Seasonal Variationmentioning

confidence: 99%

Evolutionary Ecology of Progeny Size in Arthropods

Fox

Czesak

2000

Annu. Rev. Entomol.

724

857

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“…Many abiotic and biotic factors determine the natural fluctuations of zooplankton population densities in general, and Daphnia in particular: climatic parameters, such as temperature and light (Berberovic et al 1990;Straile and Geller 1998;Alekseev and Lajus 2009), pH, oxygen conditions, and other water quality parameters (Krause-Dellin and Steinberg 1986), quantitative and qualitative food conditions (Geller 1975;Moore 1980;Rohrlack et al 1999), essential nutritional elements and compounds (e.g., Müller-Navarra 1995;Martin-Creuzburg et al 2006, as well as predation by fish or invertebrates (e.g., Vanni 1986;Lampert 1993). Even these factors create a complex tangle of influences (Gyllström and Hansson 2004); yet, the situation becomes even more complex, since one ecological parameter has not yet been considered as a stressor in depth: dissolved organic carbon, DOC .…”

Section: Introductionmentioning

confidence: 99%

Modulation of longevity in Daphnia magna by food quality and simultaneous exposure to dissolved humic substances

Bouchnak

Steinberg

2010

Limnologica

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a b s t r a c tVarious abiotic and biotic factors determine the natural fluctuations of Daphnia spec. populations; food quality and dissolved humic substances (HSs) being among these factors. In this contribution, we try to disentangle the relative impact of food quality and simultaneous HSs exposure on the fertility and longevity of D. magna. It is understood that HS-mediated stress leads to reduced fecundity in well-fed D. magna females; hence, it was expected that poor food, as a second stressor, would aggravate the HSmediated effects. Three diets were tested: the green algae Pseudokirchneriella subcapitata, baker's yeast alone, and baker's yeast plus dissolved ascorbic acid, and exposed D. magna to a HS preparation which has been shown effective in previous bioassays. It was hypothesized that the lifespan and fertility of D. magna would be best when fed green algae, and worst when fed only baker's yeast. However, contrary to these expectations, any addition of HSs reduced the stress caused by poor food quality and increased lifespan and fecundity. In the yeast series, asexually produced diapausing eggs occurred via a so far unknown pathway. With yeast diet, the expanded lifespans were slightly above, whereas the increased offspring numbers lay below, the corresponding data of the algae-fed individuals. The potential of HSs as an additional food source and as a means to extend the lifespan is discussed. These findings open the innovative perspective that under low quality food conditions, additional stressors at certain intensities may even be beneficial to individuals and populations.

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“…Several studies have established that temperature directly affects instar duration of cladocerans and consequently defines important life history traits such as age at first reproduction and intrinsic population growth rate (Bottrell 1975a,b; Lei & Armitage 1980; Geller 1987; Berberovic et al . 1990; Cole et al .…”

Section: Introductionmentioning

confidence: 99%

Between‐species differences in demographic responses to temperature of coexisting cladocerans

Ramos‐Jiliberto¹,

Aránguiz-Acuña²

2007

Austral Ecology

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In this work we report on the seasonal trends of abundances in terms of temperature exposure for four coexisting cladoceran species (Daphnia ambigua (Daphniidae), Ceriodaphnia dubia (Daphniidae), Diaphanosoma chilense (Sididae) and Moina micrura (Moinidae)) from a Chilean temperate lake. In order to compare the demographic response to temperature, we used life table experiments to parameterize matrix models for the four species at four fixed temperatures. From these life table response experiments we assessed the effects of temperature, species and their interaction on the variation in growth rate, as well as the contribution of juvenile survival, adult survival, fertility and age at first reproduction to the changes in growth rate. Our results showed interspecific differences in the effect of temperature on the growth rate. Species that present higher field abundance at lower temperature also exhibited, under controlled experiments, higher growth rates at low temperature and lower growth rates at high temperature, relative to the additive model. Conversely, species with higher abundances during the warmer seasons exhibited higher growth rates at higher experimental temperatures and lower growth rates at lower temperatures, relative to the additive model. The vital rates that most contributed to the variation in growth rate were age at first reproduction and fertility. Our growth rate estimates matched predictions of the metabolic ecology model.We thank the partial support from FONDECYT grant 1040821 and CONICYT-PBCT grant ACT34/2006 to RRJ and a CONICYT doctoral scholarship to AAA

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Seasonal variability of the embryonic development time of three planktonic crustaceans: dependence on temperature, adult size, and egg weight

Cited by 8 publications

References 26 publications

Evolutionary Ecology of Progeny Size in Arthropods

Evolutionary Ecology of Progeny Size in Arthropods

Modulation of longevity in Daphnia magna by food quality and simultaneous exposure to dissolved humic substances

Between‐species differences in demographic responses to temperature of coexisting cladocerans

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