Abstract:
:Maternal hormones are important mediators of prenatal maternal effects. Although many experimental studies have demonstrated their potency in shaping offspring phenotypes, we know remarkably little about their adaptive value. Using long-term data on a wild collared flycatcher (Ficedula albicollis) population, we show that natural selection acts in opposite ways on two maternally derived androgens, yolk androstenedione (A4) and yolk testosterone (T). High yolk A4 concentrations are associated with higher fitness, whereas high yolk T concentrations are associated with lower fitness. Natural selection thus favours females that produce eggs with high A4 and low T concentrations. Importantly, however, there exists a positive (non-genetic) correlation between A4 and T, which suggests that females are limited in their ability to reach this adaptive optimum. Thereby, these results provide strong evidence for an adaptive value of differential maternal androgen deposition, and a mechanistic explanation for the maintenance of variation in maternal investment in the wild.
journal_name
Ecol Lettjournal_title
Ecology lettersauthors
Tschirren B,Postma E,Gustafsson L,Groothuis TG,Doligez Bdoi
10.1111/ele.12339subject
Has Abstractpub_date
2014-10-01 00:00:00pages
1310-5issue
10eissn
1461-023Xissn
1461-0248journal_volume
17pub_type
杂志文章相关文献
ECOLOGY LETTERS文献大全abstract::Fine root decomposition constitutes a critical yet poorly understood flux of carbon and nutrients in terrestrial ecosystems. Here, we present the first large-scale synthesis of species trait effects on the early stages of fine root decomposition at both global and local scales. Based on decomposition rates for 279 pla...
journal_title:Ecology letters
pub_type: 信件
doi:10.1111/ele.13248
更新日期:2019-06-01 00:00:00
abstract::We developed an analytical method that quantifies the relative contributions of mortality and individual growth to ecosystem function and analysed the results from the first biodiversity experiment conducted in a tropical tree plantation. In Sardinilla, central Panama, over 5000 tree seedlings were planted in monocult...
journal_title:Ecology letters
pub_type: 杂志文章
doi:10.1111/j.1461-0248.2007.01148.x
更新日期:2008-03-01 00:00:00
abstract::The effects of spatial heterogeneity in negative biological interactions on individual performance and species diversity have been studied extensively. However, little is known about the respective effects involving positive biological interactions, including the symbiosis between plants and ectomycorrhizal (EM) fungi...
journal_title:Ecology letters
pub_type: 信件
doi:10.1111/ele.12816
更新日期:2017-09-01 00:00:00
abstract::Body condition metrics are widely used to infer animal health and to assess costs of parasite infection. Since parasites harm their hosts, ecologists might expect negative relationships between infection and condition in wildlife, but this assumption is challenged by studies showing positive or null condition-infectio...
journal_title:Ecology letters
pub_type: 杂志文章,meta分析,评审
doi:10.1111/ele.13160
更新日期:2018-12-01 00:00:00
abstract::Rising sea temperatures cause mass coral bleaching and threaten reefs worldwide. We show how maps of variations in thermal stress can be used to help manage reefs for climate change. We map proxies of chronic and acute thermal stress and develop evidence-based hypotheses for the future response of corals to each stres...
journal_title:Ecology letters
pub_type: 杂志文章
doi:10.1111/j.1461-0248.2010.01562.x
更新日期:2011-02-01 00:00:00
abstract::Root systems are important for global models of below-ground carbon and nutrient cycling. Notoriously difficult sampling methods and the fractal distribution of root diameters in the soil make data being used in these models especially susceptible to error resulting from under-sampling. We applied the concept of speci...
journal_title:Ecology letters
pub_type: 杂志文章
doi:10.1111/ele.12119
更新日期:2013-07-01 00:00:00
abstract::Anthropogenic degradation of the world's ecosystems is leading to a widespread and accelerating loss of biodiversity. However, not all species respond equally to existing threats, raising the question: what makes a species more vulnerable to extinction? We propose that higher intraspecific variability may reduce the r...
journal_title:Ecology letters
pub_type: 杂志文章
doi:10.1111/ele.12035
更新日期:2013-02-01 00:00:00
abstract::The longstanding biotic interactions hypothesis predicts that herbivore pressure declines with latitude, but the evidence is mixed. To address gaps in previous studies, we measured herbivory and defence in the same system, quantified defence with bioassays, and considered effects of leaf age. We quantified herbivory a...
journal_title:Ecology letters
pub_type: 杂志文章
doi:10.1111/ele.12925
更新日期:2018-04-01 00:00:00
abstract::The recent observation of a power-law relationship, S proportional A(z), between number of taxa, S, and area, A, for microbial eukaryotes and bacteria suggests that this is one of the few generic relationships in ecology, applicable to plants, animals and microbes. However, the rate of increase in the number of specie...
journal_title:Ecology letters
pub_type: 信件
doi:10.1111/j.1461-0248.2006.00929.x
更新日期:2006-07-01 00:00:00
abstract::Gerbilline rodents such as Allenby's gerbils (Gerbillus andersoni allenbyi), when parasitized by fleas such as Synosternus cleopatrae pyramidis, devote long hours of grooming to remove the ectoparasites. Yet no detrimental energetic or immunological effects of the ectoparasites have been found in adult Allenby's gerbi...
journal_title:Ecology letters
pub_type: 杂志文章
doi:10.1111/j.1461-0248.2010.01549.x
更新日期:2011-01-01 00:00:00
abstract::Asexual taxa often have larger ranges than their sexual progenitors, particularly in areas affected by Pleistocene glaciations. The reasons given for this 'geographical parthenogenesis' are contentious, with expansion of the ecological niche or colonisation advantages of uniparental reproduction assumed most important...
journal_title:Ecology letters
pub_type: 杂志文章
doi:10.1111/ele.12908
更新日期:2018-03-01 00:00:00
abstract::Understanding the factors that determine rates of range expansion is not only crucial for developing risk assessment schemes and management strategies for invasive species, but also provides important insight into the ability of species to disperse in response to climate change. However, there is little knowledge on w...
journal_title:Ecology letters
pub_type: 杂志文章
doi:10.1111/ele.12286
更新日期:2014-07-01 00:00:00
abstract::Intraspecific variation is at the core of evolutionary theory, and yet, from an ecological perspective, we have few robust expectations for how this variation should affect the dynamics of large communities. Here, by adapting an approach from evolutionary game theory, we show that the incorporation of phenotypic varia...
journal_title:Ecology letters
pub_type: 信件
doi:10.1111/ele.13356
更新日期:2019-11-01 00:00:00
abstract::Parasites with low host specificity (e.g. infecting a large diversity of host species) are of special interest in disease ecology, as they are likely more capable of circumventing ecological or evolutionary barriers to infect new hosts than are specialist parasites. Yet for many parasites, host specificity is not fixe...
journal_title:Ecology letters
pub_type: 信件
doi:10.1111/ele.13215
更新日期:2019-03-01 00:00:00
abstract::How abiotic and biotic factors constrain distribution limits at the harsh and benign edges of species ranges is hotly debated, partly because macroecological experiments testing the proximate causes of distribution limits are scarce. It has long been recognized - at least since Darwin's On the Origin of Species - that...
journal_title:Ecology letters
pub_type: 信件
doi:10.1111/ele.13342
更新日期:2019-10-01 00:00:00
abstract::The importance of invertebrate herbivores in regulating plant communities remains unclear, due to the absence of long-term exclusion experiments. An experiment in an English grassland involving long-term exclusions of insect and mollusc herbivores, along with rabbit fencing, showed strong, but opposing, effects of the...
journal_title:Ecology letters
pub_type: 杂志文章
doi:10.1111/j.1461-0248.2011.01694.x
更新日期:2011-12-01 00:00:00
abstract::Competing theoretical models make different predictions on which life history strategies facilitate growth of small populations. While 'fast' strategies allow for rapid increase in population size and limit vulnerability to stochastic events, 'slow' strategies and bet-hedging may reduce variance in vital rates in resp...
journal_title:Ecology letters
pub_type: 杂志文章
doi:10.1111/ele.12728
更新日期:2017-02-01 00:00:00
abstract::Community assembly history is increasingly recognized as a fundamental determinant of community structure. However, little is known as to how assembly history may affect ecosystem functioning via its effect on community structure. Using wood-decaying fungi as a model system, we provide experimental evidence that large...
journal_title:Ecology letters
pub_type: 杂志文章
doi:10.1111/j.1461-0248.2010.01465.x
更新日期:2010-06-01 00:00:00
abstract::Some microbial public goods can provide both individual and community-wide benefits, and are open to exploitation by non-producing species. One such example is the production of metal-detoxifying siderophores. Here, we investigate whether conflicting selection pressures on siderophore production by heavy metals - a de...
journal_title:Ecology letters
pub_type: 信件
doi:10.1111/ele.12878
更新日期:2018-01-01 00:00:00
abstract::While the anthropogenic impact on ecosystems today is evident, it remains unclear if the detrimental effect of hominins on co-occurring biodiversity is a recent phenomenon or has also been the pattern for earlier hominin species. We test this using the East African carnivore fossil record. We analyse the diversity of ...
journal_title:Ecology letters
pub_type: 信件
doi:10.1111/ele.13451
更新日期:2020-03-01 00:00:00
abstract::Floral mimicry of decaying plant or animal material has evolved in many plant lineages and exploits, for the purpose of pollination, insects seeking oviposition sites. Existing studies suggest that volatile signals play a particularly important role in these mimicry systems. Here, we present the first large-scale phyl...
journal_title:Ecology letters
pub_type: 杂志文章
doi:10.1111/ele.12152
更新日期:2013-09-01 00:00:00
abstract::Despite nearly 100 years of edge studies, there has been little effort to document how edge responses 'cascade' to impact multi-trophic food webs. We examined changes within two, four-tiered food webs located on opposite sides of a habitat edge. Based on a 'bottom-up' resource-based model, we predicted plant resources...
journal_title:Ecology letters
pub_type: 信件
doi:10.1111/j.1461-0248.2011.01656.x
更新日期:2011-09-01 00:00:00
abstract::Murtaugh (2009) recently illustrated that all subsets variable selection is very similar to stepwise regression. This, however, does not necessarily mean both methods are useful. On the contrary, the same problems with overfitting should apply. Ecologists should, if model building is indeed necessary, consider more re...
journal_title:Ecology letters
pub_type: 杂志文章
doi:10.1111/j.1461-0248.2010.01460.x
更新日期:2010-05-01 00:00:00
abstract::Climate change and variation in atmospheric ozone are influencing the intensity of ultraviolet radiation (UVR) reaching ecosystems. Changing UVR regimes, in turn, may alter epidemics of infectious disease. This possibility hinges on the sensitivity of epidemiologically relevant traits of host and parasite to UVR. We a...
journal_title:Ecology letters
pub_type: 杂志文章
doi:10.1111/j.1461-0248.2011.01707.x
更新日期:2012-01-01 00:00:00
abstract::Latitudinal gradients in biotic interactions have been suggested as causes of global patterns of biodiversity and phenotypic variation. Plant biologists have long speculated that outcrossing mating systems are more common at low than high latitudes owing to a greater predictability of plant-pollinator interactions in ...
journal_title:Ecology letters
pub_type: 杂志文章
doi:10.1111/ele.12738
更新日期:2017-03-01 00:00:00
abstract::Contact networks are fundamental to the transmission of infection and host sex often affects the acquisition and progression of infection. However, the epidemiological impacts of sex-related variation in animal contact networks have rarely been investigated. We test the hypothesis that sex-biases in infection are rela...
journal_title:Ecology letters
pub_type: 杂志文章
doi:10.1111/ele.12898
更新日期:2018-02-01 00:00:00
abstract::Mutualistic interactions involving pollination and ant-plant mutualistic networks typically feature tightly linked species grouped in modules. However, such modularity is infrequent in seed dispersal networks, presumably because research on those networks predominantly includes a single taxonomic animal group (e.g. bi...
journal_title:Ecology letters
pub_type: 杂志文章
doi:10.1111/j.1461-0248.2011.01639.x
更新日期:2011-08-01 00:00:00
abstract::Natural ecosystems are shaped along two fundamental axes, space and time, but how biodiversity is partitioned along both axes is not well understood. Here, we show that the relationship between temporal and spatial biodiversity patterns can vary predictably according to habitat characteristics. By quantifying seasonal...
journal_title:Ecology letters
pub_type: 信件
doi:10.1111/ele.12798
更新日期:2017-08-01 00:00:00
abstract::Hette-Tronquart (2019, Ecol. Lett.) raises three concerns about our interpretation of stable isotope data in Sheppard et al. (2018, Ecol. Lett., 21, 665). We feel that these concerns are based on comparisons that are unreasonable or ignore the ecological context from which the data were collected. Stable isotope ratio...
journal_title:Ecology letters
pub_type: 杂志文章
doi:10.1111/ele.13374
更新日期:2019-11-01 00:00:00
abstract::Changes in phenotypic variability in natural populations have received little attention in comparison with changes in mean trait values. This is unfortunate because trait diversity may influence adaptive evolutionary change and population stability. We combine two unique data sets to illuminate complex trait changes i...
journal_title:Ecology letters
pub_type: 杂志文章
doi:10.1111/j.1461-0248.2009.01311.x
更新日期:2009-07-01 00:00:00