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Evolution Letters
Scopus
ISSN 2056-3744 · Oxford University Press · 172 artikel di indeks
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Artikel Jurnal
Population‐level variation in parasite resistance due to differences in immune initiation and rate of response
Abstract Closely related populations often differ in resistance to a given parasite, as measured by infection success or failure. Yet, the immunological mechanisms of these evolved differences are rarely specified. Does resistance evolve via changes to the host's ability to recognize that an…
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A reexamination of theoretical arguments that indirect selection on mate preference is likely to be weaker than direct selection
Abstract Female preference for male ornaments or displays can evolve by indirect selection resulting from genetic benefits of mate choices, or by direct selection resulting from nongenetic benefits or selection on sensory systems occurring in other contexts. In an influential paper, Kirkpatrick and…
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Interacting host modifier systems control Wolbachia‐induced cytoplasmic incompatibility in a haplodiploid mite
Abstract Reproductive parasites such as Wolbachia spread within host populations by inducing cytoplasmic incompatibility (CI). CI occurs when parasite‐modified sperm fertilizes uninfected eggs and is typified by great variation in strength across biological systems. In haplodiploid hosts, CI has…
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The genomic scale of fluctuating selection in a natural plant population
Abstract This study characterizes evolution at ≈1.86 million Single Nucleotide Polymorphisms (SNPs) within a natural population of yellow monkeyflower (Mimulus guttatus). Most SNPs exhibit minimal change over a span of 23 generations (less than 1% per year), consistent with neutral evolution in a…
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Decoupling of sexual signals and their underlying morphology facilitates rapid phenotypic diversification
Abstract How novel phenotypes evolve is challenging to imagine because traits are often underlain by numerous integrated phenotypic components, and changes to any one form can disrupt the function of the entire module. Yet novel phenotypes do emerge, and research on adaptive phenotypic evolution…
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Rapid and transient evolution of local adaptation to seasonal host fruits in an invasive pest fly
Abstract Both local adaptation and adaptive phenotypic plasticity can influence the match between phenotypic traits and local environmental conditions. Theory predicts that environments stable for multiple generations promote local adaptation, whereas highly heterogeneous environments favor…
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Sex‐dependent effects of parental age on offspring fitness in a cooperatively breeding bird
Abstract Parental age can have considerable effects on offspring phenotypes and health. However, intergenerational effects may also have longer term effects on offspring fitness. Few studies have investigated parental age effects on offspring fitness in natural populations while also testing for…
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The ecology and quantitative genetics of seed and seedling traits in upland and lowland ecotypes of a perennial grass
Abstract Plants have evolved diverse reproductive allocation strategies and seed traits to aid in dispersal, persistence in the seed bank, and establishment. In particular, seed size, dormancy, and early seedling vigor are thought to be key functional traits with important recruitment and fitness…
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Unique bone microanatomy reveals ancestry of subterranean specializations in mammals
Abstract Acquiring a subterranean lifestyle entails a substantial shift for many aspects of terrestrial vertebrates’ biology. Although this lifestyle is associated with multiple instances of convergent evolution, the relative success of some subterranean lineages largely remains unexplained. Here…
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Why did the Wolbachia transinfection cross the road? drift, deterministic dynamics, and disease control
Abstract Maternally inherited Wolbachia transinfections are being introduced into natural mosquito populations to reduce the transmission of dengue, Zika, and other arboviruses. Wolbachia‐induced cytoplasmic incompatibility provides a frequency‐dependent reproductive advantage to infected females…
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How much does the unguarded X contribute to sex differences in life span?
Abstract Females and males often have markedly different mortality rates and life spans, but it is unclear why these forms of sexual dimorphism evolve. The unguarded X hypothesis contends that dimorphic life spans arise from sex differences in X or Z chromosome copy number (i.e., one copy in the…
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A need for standardized reporting of introgression: Insights from studies across eukaryotes
Abstract With the rise of affordable next‐generation sequencing technology, introgression—or the exchange of genetic materials between taxa—has become widely perceived to be a ubiquitous phenomenon in nature. Although this claim is supported by several keystone studies, no thorough assessment of…
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Phenotypic but no genetic adaptation in zooplankton 24 years after an abrupt +10°C climate change
Abstract The climate is currently warming fast, threatening biodiversity all over the globe. Populations often adapt rapidly to environmental change, but for climate warming very little evidence is available. Here, we investigate the pattern of adaptation to an extreme +10°C climate change in the…
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Frequent origins of traumatic insemination involve convergent shifts in sperm and genital morphology
Abstract Traumatic insemination is a mating behavior during which the (sperm) donor uses a traumatic intromittent organ to inject an ejaculate through the epidermis of the (sperm) recipient, thereby frequently circumventing the female genitalia. Traumatic insemination occurs widely across animals…
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Frequency dependence and the predictability of evolution in a changing environment
Abstract Frequency‐dependent (FD) selection, whereby fitness and selection depend on the genetic or phenotypic composition of the population, arises in numerous ecological contexts (competition, mate choice, crypsis, mimicry, etc.) and can strongly impact evolutionary dynamics. In particular…
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Allometric conservatism in the evolution of bird beaks
Abstract Evolution can involve periods of rapid divergent adaptation and expansion in the range of diversity, but evolution can also be relatively conservative over certain timescales due to functional, genetic‐developmental, and ecological constraints. One way in which evolution may be…
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Age‐specific survivorship and fecundity shape genetic diversity in marine fishes
Abstract Genetic diversity varies among species due to a range of eco‐evolutionary processes that are not fully understood. The neutral theory predicts that the amount of variation in the genome sequence between different individuals of the same species should increase with its effective population…
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Directional selection and the evolution of breeding date in birds, revisited: Hard selection and the evolution of plasticity
Abstract The mismatch between when individuals breed and when we think they should breed has been a long‐standing problem in evolutionary ecology. Price et al. is a classic theory paper in this field and is mainly cited for its most obvious result: if individuals with high nutritional condition…
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Pollution induces epigenetic effects that are stably transmitted across multiple generations
Abstract It has been hypothesized that the effects of pollutants on phenotypes can be passed to subsequent generations through epigenetic inheritance, affecting populations long after the removal of a pollutant. But there is still little evidence that pollutants can induce persistent epigenetic…
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Detection of sexually antagonistic transmission distortions in trio datasets
Abstract Sexual dimorphisms are widespread in animals and plants, for morphological as well as physiological traits. Understanding the genetic basis of sexual dimorphism and its evolution is crucial for understanding biological differences between the sexes. Genetic variants with sex‐antagonistic…