In: Genetics, 2020, vol. 214, no. 1, p. 3–48
Life-history traits or “fitness components”—such as age and size at maturity, fecundity and fertility, age-specific rates of survival, and life span—are the major phenotypic determinants of Darwinian fitness. Analyzing the evolution and genetics of these phenotypic targets of selection is central to our understanding of adaptation. Due to its simple and rapid life cycle, cosmopolitan...
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In: Evolution Letters, 2020, vol. 4, no. 1, p. 4–18
Global climate change (GCC) increasingly threatens biodiversity through the loss of species, and the transformation of entire ecosystems. Many species are challenged by the pace of GCC because they might not be able to respond fast enough to changing biotic and abiotic conditions. Species can respond either by shifting their range, or by persisting in their local habitat. If populations...
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In: eLife, 2019, vol. 8, p. e51289
Sex-optimal diets have different effects on gene expression in female and male flies.
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In: Nature Education Knowledge, 2010, vol. 1, no. 12, p. 1-6
This case study highlights the general issues raised earlier. First, that maximum lifespan is not an easily obtainable metric. Specifically, it is unambiguous in the sense that once the last animal dies, it is most definitely dead. But to estimate the variance in maximum lifespan, many replicate populations would need to be followed for each treatment group (with each replicate providing a single...
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In: Journal of Herpetology, 1997, vol. 31, no. 4, p. 558-564
We estimated th eannual survivorship of two populations of the asp viper, Vipera aspis aspis, by recapturing known dult individuals in the field over six and nine years respectively. The snakes at the two study sites in th eJura mountains of northwestern Switzerland were active between mid-March and mid-October. Vispera a. aspis is easily captured by hand, has individually recognizable marks...
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In: Oikos, 2005, vol. 110, no. 1, p. 55-66
Detailed studies on mammals and birds have shown that the effects of climate variation on population dynamics often depend on population composition, because weather affects different subsets of a population differently. It is presently unknown whether this is also true for ectothermic animals such as reptiles. Here we show such an interaction between weather and demography for an ectothermic...
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In: Journal of Theoretical Biology, 2004, vol. 228(2), p. 241
Understanding the mechanisms that promote coexistence among species is a fundamental problem in evolutionary ecology. Such mechanisms include environmental noise, spatial population structure, density dependence, and genetic variation. In natural populations such factors may exert combined effects on coexistence. Thus, to disentangle the contribution of several factors to coexistence, their...
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In: Mechanisms of Ageing and Development, 2004, vol. 125(3), p. 155
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