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The Evolution of Female-Biased Genital Diversity in Bedbugs (Cimicidae). Evolution (IF 3.3) Pub Date : 2023-11-25 Steffen Roth,Michael T Siva-Jothy,Ondřej Balvín,Edward H Morrow,Endre Willassen,Klaus Reinhardt
Rapid genitalia evolution is believed to be mainly driven by sexual selection. Recently, non-copulatory genital functions have been suggested to exert stronger selection pressure on female genitalia than copulatory functions. In bedbugs (Cimicidae), the impact of the copulatory function can be isolated from the non-copulatory impact. Unlike in other taxa, female copulatory organs have no function in
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Placental evolution from a three-dimensional and multiscale structural perspective. Evolution (IF 3.3) Pub Date : 2023-11-17 Davis Laundon,Neil J Gostling,Bram G Sengers,Pascale Chavatte-Palmer,Rohan M Lewis
The placenta mediates physiological exchange between the mother and fetus. In placental mammals, all placentas are descended from a single common ancestor and functions are conserved across species; however, the placenta exhibits radical structural diversity. The selective pressures behind this structural diversity are poorly understood. Traditionally, placental structures have largely been investigated
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Evidence supporting an evolutionary trade-off between material properties and architectural design in Anolis lizard long bones. Evolution (IF 3.3) Pub Date : 2023-11-15 Ken S Toyama,Alexander Tinius,D Luke Mahler
In biology, 'many-to-one mapping' occurs when multiple morphological forms can meet a particular functional demand. Knowledge of this mapping is crucial for understanding how selection on performance shapes the evolution of morphological diversity. Past research has focused primarily on the potential for geometrically alternative morphological designs to produce equivalent performance outcomes. Here
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The role of abiotic and biotic factors in the unequal body shape diversification of a Gondwanan fish radiation (Otophysi:Characiformes). Evolution (IF 3.3) Pub Date : 2023-11-11 Michael D Burns,Jason H Knouft,Casey B Dillman
Understanding why some clades diversify greatly while others do not is a major goal of evolutionary biology. Both abiotic and biotic factors are important in driving unequal morphological diversity across the tree of life. However, few studies have quantified how abiotic habitat and community composition differences influence unequal morphological diversification in spatiotemporally diffuse radiations
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Tracking hybrid viability across life-stages in a natural avian contact zone. Evolution (IF 3.3) Pub Date : 2023-11-11 Murielle Ålund,Julia Carolina Segami Marzal,Yishu Zhu,P Navaneeth Krishna Menon,William Jones,Anna Qvarnström
Hybrid inviability is an important post-zygotic reproductive barrier between species, but emerging signs of reduced viability can be difficult to study across the lifespan of natural hybrids. We use a combination of long-term monitoring, extra-pair paternity and mitochondrial DNA identification in a natural hybrid zone of Ficedula flycatchers to detect emerging signs of intrinsic hybrid inviability
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The impact of helping experience on helper life-history and fitness in a cooperatively breeding bird. Evolution (IF 3.3) Pub Date : 2023-11-08 Ellie Chesterton,Alexandra M Sparks,Terry Burke,Jan Komdeur,David S Richardson,Hannah L Dugdale
Cooperative breeding occurs when helpers provide alloparental care to the offspring of a breeding pair. One hypothesis of why helping occurs is that helpers gain valuable skills that may increase their own future reproductive success. However, research typically focuses on the effect of helping on short-term measures of reproductive success. Fewer studies have considered how helping affects long-term
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Losses of sexual dichromatism involve rapid changes in female plumage colors to match males in New World blackbirds. Evolution (IF 3.3) Pub Date : 2023-11-07 J Jordan Price,Karolyn Garcia,Muir D Eaton
Differences in coloration between the sexes (sexual dichromatism) can increase or decrease in a species through evolutionary changes in either or both sexes diverging or converging in their colors. Few previous studies, however, have examined the relative rates of such changes, particularly when dichromatism is lost. Using reflectance data from 37 species of the New World blackbird family (Icteridae)
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Correction to: Phenotypic evolution of SARS-CoV-2: a statistical inference approach. Evolution (IF 3.3) Pub Date : 2023-11-02
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Host-associated transmission favors transition of a commensal toward antagonism. Evolution (IF 3.3) Pub Date : 2023-11-02 Kayla S Stoy,Erika M Díaz-Almeyda,Chris Bartelt,Alice Acosta,Levi T Morran,Nicole M Gerardo
The impacts of host-associated microbes on their hosts vary along a continuum of antagonistic, neutral, and beneficial interactions. Transmission mode is predicted to contribute to transitions along the continuum by altering opportunities for the alignment of host and microbe fitness interests. Under vertical transmission, microbial evolution is tightly coupled to the host environment, which may facilitate
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Digest: Ecological and life-history drivers of avian skull evolution. Evolution (IF 3.3) Pub Date : 2023-11-02 Madeleine Tanda,Ethan Deal
What are the factors that drive the patterns and evolutionary rates of morphological characteristics? To answer this question, Hunt et al. explore shape variation and rates of change in modern avian skulls using morphometric measurements and phylogenetic analyses. They find that habitat density and migration have the strongest influences on avian skull variation and that denser habitats, longer migratory
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Genome streamlining and clonal erosion in nutrient-limited environments: a test using genome-size variable populations. Evolution (IF 3.3) Pub Date : 2023-11-02 Claus-Peter Stelzer,Maria Pichler,Peter Stadler
Some selection-based theories propose that genome streamlining, favoring smaller genome sizes, is advantageous in nutritionally limited environments, particularly under P-limitation. To test this prediction, we conducted several experimental evolution trials on clonal populations of a facultatively asexual rotifer that exhibits intraspecific variation in genome size. Most trials showed a rapid decline
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Predation risk drives aposematic signal conformity. Evolution (IF 3.3) Pub Date : 2023-11-02 Hannah Walker,Tim Caro,Donovan Bell,Adam Ferguson,Theodore Stankowich
Contrary to expectations regarding efficient predator education mediated by lack of ambiguity and enhanced prey recognition, aposematic signals often show considerable intraspecific variability. For example, some striped skunks (Mephitis mephitis) are almost entirely white, others have black-and-white stripes of equivalent thicknesses, yet others are mostly black. We tested the ecological correlates
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Single-cell transcriptomics supports presence of cryptic species and reveals low levels of population genetic diversity in two testate amoebae morphospecies with large population sizes. Evolution (IF 3.3) Pub Date : 2023-11-02 Agnes K M Weiner,Taylor Sehein,Auden Cote-L'Heureux,Robin S Sleith,Mattia Greco,Clara Malekshahi,Chase Ryan-Embry,Naomi Ostriker,Laura A Katz
The enormous population sizes and wide biogeographical distribution of many microbial eukaryotes set the expectation of high levels of intraspecific genetic variation. However, studies investigating protist populations remain scarce, mostly due to limited 'omics data. Instead, most genetics studies of microeukaryotes have thus far relied on single loci, which can be misleading and do not easily allow
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Environmental dependence of mutational (co)variances of adaptive traits. Evolution (IF 3.3) Pub Date : 2023-11-02 Ashvitha Kannan,Robert J Dugand,Nicholas C Appleton,Stephen F Chenoweth,Carla M Sgrò,Katrina McGuigan
Standing genetic variation, and capacity to adapt to environment change, will ultimately depend on the fitness effects of mutations across the range of environments experienced by contemporary, panmictic, populations. We investigated how mild perturbations in diet and temperature affect mutational (co)variances of traits that evolve under climatic adaptation, and contribute to individual fitness in
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Digest: Urbanization shapes selection altering food webs. Evolution (IF 3.3) Pub Date : 2023-11-02 Magie Williams
How has urbanization altered the relationships between species and selection on phenotypes? To address this question, Palacio and Ordano measured trait and frugivore selection in blue passionflower (Passiflora caerulea) in three different localities. Their analysis revealed changes in avian selection with urbanization, which altered population phenotypes.
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Erosional exhumation of carbonate rock facilitates dispersal-mediated allopatric speciation in freshwater fishes. Evolution (IF 3.3) Pub Date : 2023-11-02 Daemin Kim,Maya F Stokes,Sandy Ebersole,Thomas J Near
A fundamental goal of evolutionary biology is to understand the mechanisms that generate and maintain biodiversity. Discovery and delimitation of species represent essential prerequisites for such investigations. We investigate a freshwater fish species complex comprising Etheostoma bellator and the endangered E. chermocki, which is endemic to the Black Warrior River system in Alabama, USA, a global
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Divergence in the internal genital morphology of females and correlated divergence in male intromittent structures among populations of a millipede. Evolution (IF 3.3) Pub Date : 2023-11-02 Nadia S Sloan,W Jason Kennington,Leigh W Simmons
Our understanding of genital evolution comes largely from studies of male genitalia. Females have received far less attention because of the difficulties inherent in quantifying the shapes of their internal genital structures. Here we combine advances in micro-computed tomography with a new landmark free method of quantifying three-dimensional trait shape, to document patterns of divergence in female
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Tissue and toxin-specific divergent evolution in plant defense Evolución divergente específica de tejido y toxina en defensa de plantas. Evolution (IF 3.3) Pub Date : 2023-11-02 Xosé López-Goldar,Anurag A Agrawal
A major predicted constraint on the evolution of anti-herbivore defense in plants is the nonindependent expression of traits mediating resistance. Since herbivore attack can be highly variable across plant tissues, we hypothesized that correlations in toxin expression within and between plant tissues may limit population differentiation and, thus, plant adaptation. Using full-sib families from two
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Rapid sperm length divergence in a polygynandrous passerine: a mechanism of cryptic speciation? Evolution (IF 3.3) Pub Date : 2023-11-02 Jan T Lifjeld,Miguel de Gabriel Hernando,Benito Fuertes Marcos,Gaute Grønstøl,Jarl A Anmarkrud,Michael Matschiner,Erica H Leder
When populations become geographically isolated, they begin to diverge in various traits and at variable rates. The dynamics of such trait divergences are relevant for understanding evolutionary processes such as local adaptation and speciation. Here we examine divergences in sperm and body structures in a polygynandrous songbird, the alpine accentor (Prunella collaris) between two allopatric high-altitude
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Phenotypic rate and state are decoupled in response to river-to-lake transitions in cichlid fishes. Evolution (IF 3.3) Pub Date : 2023-11-02 Edward D Burress,Martha M Muñoz
Geographic access to isolated ecosystems is an important catalyst of adaptive radiation. Cichlid fishes repeatedly colonized rift, crater, and volcanic lakes from surrounding rivers. We test the "lake effect" on the phenotypic rate and state across 253 cichlid species. The rate of evolution was consistently higher (~10-fold) in lakes, and consistent across different dimensions of the phenotype. Rate
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Evidence for stronger sexual selection in males than in females using an adapted method of Bateman's classic study of Drosophila melanogaster. Evolution (IF 3.3) Pub Date : 2023-11-02 Natasha Davies,Tim Janicke,Edward H Morrow
Bateman's principles, originally a test of Darwin's theoretical ideas, have since become fundamental to sexual selection theory and vital to contextualizing the role of anisogamy in sex differences of precopulatory sexual selection. Despite this, Bateman's principles have received substantial criticism, and researchers have highlighted both statistical and methodological errors, suggesting that Bateman's
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Immunity-driven evolution of virulence and diversity in respiratory diseases. Evolution (IF 3.3) Pub Date : 2023-11-02 Johan A J Metz,Barbara Boldin
The time-honored paradigm in the theory of virulence evolution assumes a positive relation between infectivity and harmfulness. However, the etiology of respiratory diseases yields a negative relation, with diseases of the lower respiratory tract being less infective and more harmful. We explore the evolutionary consequences in a simple model incorporating cross-immunity between disease strains that
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Fish biogeography and hybridization: do contemporary distributions predict introgression history? Evolution (IF 3.3) Pub Date : 2023-11-02 Jonathan M Waters,Ciaran S M Campbell,Ludovic Dutoit
Freshwater ecosystems frequently house diverse assemblages of closely related fish taxa, which can be particularly prone to hybridization and introgression. While extensive introgression may be expected among biogeographically proximate lineages, recent analyses imply that contemporary distributions do not always accurately predict hybridization history. Here, we use the ABBA-BABA approach to test
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All about being old and shooting hairs: Clade age and urticating hair explain the patterns of diversification in tarantulas. Evolution (IF 3.3) Pub Date : 2023-11-01 Aritra Biswas,K Praveen Karanth
The extreme asymmetry of species richness distribution across the tree of life has always intrigued evolutionary biologists. Two competing explanations have been proposed to explain this pattern-the clade age hypothesis and diversification rate variation. While these two scenarios may not be mutually exclusive, to what extent time and diversification rates interact to explain species richness patterns
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A radiation of Psylliodes flea beetles on Brassicaceae is associated with the evolution of specific detoxification enzymes. Evolution (IF 3.3) Pub Date : 2023-10-31 Matilda W Gikonyo,Seung-Joon Ahn,Maurizio Biondi,Frank Fritzlar,Yu Okamura,Heiko Vogel,Tobias G Köllner,Ismail Şen,David Hernández-Teixidor,Chi-Feng Lee,Harald Letsch,Franziska Beran
Flea beetles of the genus Psylliodes have evolved specialized interactions with plant species belonging to several distantly related families, mainly Brassicaceae, Solanaceae, and Fagaceae. This diverse host use indicates that Psylliodes flea beetles are able to cope with different chemical defense metabolites, including glucosinolates, the characteristic defense metabolites of Brassicaceae. Here we
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Analytical advances alleviate model misspecification in non-Brownian multivariate comparative methodsPostępy teoretyczne zmniejszają błąd klasyfikacji w wielowymiarowych niebrownowskich filogenetycznych metodach porównawczychAnalytiska framsteg minskar klassificeringsfelet i flerdimensionella fylogenetiska jämförande metoder ej baserade på Brownsk rörelse. Evolution (IF 3.3) Pub Date : 2023-10-28 Krzysztof Bartoszek,Jesualdo Fuentes-González,Venelin Mitov,Jason Pienaar,Marcin Piwczyński,Radosław Puchałka,Krzysztof Spalik,Kjetil Lysne Voje
Adams and Collyer (2018) argue that contemporary multivariate (Gaussian) phylogenetic comparative methods are prone to favouring more complex models of evolution and sometimes rotation invariance can be an issue. Here we dissect the concept of rotation invariance and point out that, depending on the understanding, this can be an issue with any method that relies on numerical instead of analytical estimation
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Macroevolution of floral scent chemistry across radiations of male euglossine bee-pollinated plants. Evolution (IF 3.3) Pub Date : 2023-10-28 Jasen W Liu,Paulo Milet-Pinheiro,Günter Gerlach,Manfred Ayasse,Carlos Eduardo Pereira Nunes,Isabel Alves-Dos-Santos,Santiago R Ramírez
Floral volatiles play key roles as signaling agents that mediate interactions between plants and animals. Despite their importance, few studies have investigated broad patterns of volatile variation across groups of plants that share pollinators, particularly in a phylogenetic context. The "perfume flowers", Neotropical plant species exhibiting exclusive pollination by male euglossine bees in search
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Sexual selection buffers the negative consequences of population fragmentation on adaptive plastic responses to increasing temperatures. Evolution (IF 3.3) Pub Date : 2023-10-27 Maider Iglesias-Carrasco,Beatriz Taboada,Miguel Lozano,Pau Carazo,Roberto Garcia-Roa,Eduardo Rodriguez-Exposito,Francisco Garcia-Gonzalez
Whether sexual selection facilitates or hampers the ability to plastically respond to novel environments might depend on population structure, via its effects on sexual interactions and associated fitness payoffs. Using experimentally evolved lines of the seed beetle Callosobruchus maculatus, we tested whether individuals evolving under different sexual selection (monogamy vs polygamy) and population
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Sexual Selection and the Non-random Union of Gametes: Retesting for Assortative Mating by Fitness in Drosophila melanogaster. Evolution (IF 3.3) Pub Date : 2023-10-24 Sanduni Talagala,Emily Rakosy,Tristan A F Long
While numerous theoretical population genetic models predict that mating assortatively by genetic 'quality' will enhance the efficiency of purging of deleterious mutations and/or the spread of beneficial alleles in the gene pool, empirical examples of assortative mating by quality are surprisingly rare and often inconclusive. Here, we set out to examine whether fruit flies (Drosophila melanogaster)
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Convergent rates of protein evolution identify novel targets of sexual selection in primates. Evolution (IF 3.3) Pub Date : 2023-10-21 Bri L Ports,Michael I Jensen-Seaman
Sexual selection is the differential reproductive success of individuals, resulting from competition for mates, mate choice, or success in fertilization. In primates, this selective pressure often leads to the development of exaggerated traits which play a role in sexual competition and successful reproduction. In order to gain insight into the mechanisms driving the development of sexually selected
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Riverine flow rate drives widespread convergence in the shell morphology of imperiled freshwater mussels. Evolution (IF 3.3) Pub Date : 2023-10-20 Sean M Keogh,John M Pfeiffer,Andrew M Simons,Stewart M Edie
Frequent and strong morphological convergence suggests that determinism tends to supercede historical contingencies in evolutionary radiations. For many lineages living within the water-column of rivers and streams, hydrodynamic forces drive widespread morphological convergence. Living below the sediment-water interface may release organisms from these hydrodynamic pressures, permitting a broad array
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Implications of headwater contact zones for the riverine barrier hypothesis: a case study of the Blue-capped Manakin (Lepidothrix coronata). Evolution (IF 3.3) Pub Date : 2023-10-20 Andre E Moncrieff,Brant C Faircloth,Rosalind C Remsen,Anna E Hiller,Cristhian Felix,Angelo P Capparella,Alexandre Aleixo,Thomas Valqui,Robb T Brumfield
Rivers frequently delimit the geographic ranges of species in the Amazon Basin. These rivers also define the boundaries between genetic clusters within many species, yet river boundaries have been documented to break down in headwater regions where rivers are narrower. To explore the evolutionary implications of headwater contact zones in Amazonia, we examined genetic variation in the Blue-capped Manakin
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The Impact of Genetic Background During Laboratory Evolution of Pseudomonas aeruginosa in a Cystic Fibrosis-like Environment. Evolution (IF 3.3) Pub Date : 2023-10-20 Nicole Filipow,Samantha Mallon,Sonal Shewaramani,Rees Kassen,Alex Wong
Genetic background has the potential to influence both the tempo and trajectory of adaptive change: different genotypes of a given species may adopt varied solutions to the same environmental challenge, or they may approach the same solution at different rates. Laboratory selection has been used widely to experimentally examine the evolutionary consequences of variation in genetic background, although
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Evolutionary consequences of microbiomes for hosts: impacts on host fitness, traits, and heritability. Evolution (IF 3.3) Pub Date : 2023-10-13 Anna M O'Brien,Jason R Laurich,Megan E Frederickson
An organism's phenotypes and fitness often depend on interactive effects of its genome (Ghost), microbiome (Gmicrobe), and environment (E). These GxG, GxE, and GxGxE effects fundamentally shape host-microbiome (co)evolution and may be widespread, but are rarely compared within a single experiment. We collected and cultured Lemna minor (duckweed) and its associated microbiome from 10 sites across an
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Evolutionarily labile dispersal behavior and discontinuous habitats enhance population differentiation in island vs. continentally distributed swallows. Evolution (IF 3.3) Pub Date : 2023-10-06 Grant G Broyles,Brian M Myers,Nicholas R Friedman,Dency F Gawin,Farah S Mohd-Taib,Penigran G M Salam,Sampath S Seneviratne,N Chamalka G de Silva,Thilini T M Lekamlage,Amanda K Hund,Elizabeth S C Scordato
The causes of population divergence in vagile groups remain a paradox in evolutionary biology: dispersive species should be able to colonize new areas, a prerequisite for allopatric speciation, but dispersal also facilitates gene flow, which erodes population differentiation. Strong dispersal ability has been suggested to enhance divergence in patchy habitats and inhibit divergence in continuous landscapes
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Early origin and diverse phenotypic implementation of iridescent UV patterns for sexual signaling in pierid butterflies. Evolution (IF 3.3) Pub Date : 2023-10-05 Vincent Ficarrotta,Arnaud Martin,Brian A Counterman,R Alexander Pyron
Iridescent ultraviolet (IUV) patterns on pierid butterfly wings are phenotypic adaptations commonly used as sexual signals, generated by scales with ultrastructural modifications. Pierid IUV patterns are sexually dichromatic, with reduced size in females, where conspicuous sexual signaling balances courtship against ecological predation. There have been no phylogenetic reconstructions of IUV within
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Larval plastic responses to warming and desiccation delay gonadal maturation in post-metamorphic spadefoot toads. Evolution (IF 3.3) Pub Date : 2023-10-04 Pablo Burraco,Juan Carlos Torres-Montoro,Ivan Gomez-Mestre
Developmental plasticity allows organisms to adjust life-history traits to varying environmental conditions, which can have concomitant effects across life stages. Many amphibians are suitable model systems to study plasticity because their larvae can adjust growth and differentiation under fluctuating environments. It is unknown, however, whether somatic and gonadal differentiation are equally affected
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Dramatic difference in rate of chromosome number evolution among sundew (Drosera L., Droseraceae) lineages. Evolution (IF 3.3) Pub Date : 2023-10-03 Rebekah A Mohn,Rosana Zenil-Ferguson,Thilo A Krueger,Andreas S Fleischmann,Adam T Cross,Ya Yang
Chromosome number change is a driver of speciation in eukaryotic organisms. Carnivorous sundews in the plant genus Drosera L. exhibit single chromosome number variation both among and within species, especially in the Australian Drosera subg. Ergaleium D.C., potentially linked to atypical centromeres that span much of the length of the chromosomes. We critically reviewed the literature on chromosome
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Digest: Unveiling the role of chemical communication in lizard diversification. Evolution (IF 3.3) Pub Date : 2023-10-03 Cristian Román-Palacios
Although many studies looking at the role that sexual selection plays in macroevolution have focused on the involvement of visual and acoustic signals, the potential influence of chemical communication remains unexplored. Instead of focusing on well-studied instances of sexually selected traits, Murali et al. analyze chemical communication to test whether sexual selection could help explain large-scale
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Digest: Multivariate genetic variation constrains adaptation to environmental changes during range expansion. Evolution (IF 3.3) Pub Date : 2023-10-03 Haoran Cai,David Des Marais
How do selection and standing genetic variation shape population divergence across landscapes? Henry and Stinchcombe estimated selection gradients on traits in the ivy-leaved morning glory (Ipomoea hederacea) in the field and compared them with the G-matrix and population divergence for four populations in North America. The authors show that population divergence and genetic covariances are largely
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Evolutionary signatures of a trade-off in direct and indirect defenses across the wild grape genus, Vitis. Evolution (IF 3.3) Pub Date : 2023-10-03 Carolyn D K Graham,Elisabeth J Forrestel,Anthony L Schilmiller,Ash T Zemenick,Marjorie G Weber
Evolutionary correlations between chemical defense and protection by mutualist bodyguards have been long predicted, but tests of these patterns remain rare. We use a phylogenetic framework to test for evolutionary correlations indicative of trade-offs or synergisms between direct defense in the form of plant secondary metabolism and indirect defense in the form of leaf domatia, across 33 species in
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Sexually selected male weapon increases the risk of population extinction under environmental change: an experimental evidence. Evolution (IF 3.3) Pub Date : 2023-10-03 Aleksandra Łukasiewicz,Neelam Porwal,Małgorzata Niśkiewicz,Jonathan M Parrett,Jacek Radwan
Exaggerated sexually selected traits (SSTs), occurring more commonly in males, help individuals to increase reproductive success but are costly to produce and maintain. These costs on the one hand may improve population fitness by intensifying selection against maladapted males, but on the other hand, may increase the risk of extinction under environmental challenges. However, the impact of SSTs on
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The evolutionary ecology of variation in labile traits: selection on its among- and within-individual components. Evolution (IF 3.3) Pub Date : 2023-10-03 Yimen G Araya-Ajoy,Niels J Dingemanse,David F Westneat,Jonathan Wright
Closer integration between behavioral ecology and quantitative genetics has resulted in a recent increase in studies partitioning sources of variation in labile traits. Repeatable between-individual differences are commonly documented, and their existence is generally explained using adaptive arguments, implying that selection has shaped variation at the among- and within-individual level. However
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Prezygotic reproductive barriers in precopulatory behavior of tidepool copepod species. Evolution (IF 3.3) Pub Date : 2023-10-03 Satomi Tsuboko-Ishii,Ronald S Burton
Complexity in prezygotic mating behavior can contribute to the emergence of sexual incompatibility and reproductive isolation. In this study, we performed behavioral tests with two tidepool copepod species of the genus Tigriopus to explore the possibility of precopulatory behavioral isolation. We found that interspecific mating attempts failed prior to genital contact, and that this failure occurred
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Macroevolution of sexually selected weapons: weapon evolution in chameleons. Evolution (IF 3.3) Pub Date : 2023-10-03 Melissa Van Kleeck-Hann,John J Wiens
The evolution of sexually selected traits is a major topic in evolutionary biology. However, large-scale evolutionary patterns in these traits remain understudied, especially those traits used in male-male competition (weapons sensu lato). Here, we analyze weapon evolution in chamaeleonid lizards, both within and between the sexes. Chameleons are an outstanding model system because of their morphological
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Repeatable randomness, invariant properties, and the design of biological signatures of identity. Evolution (IF 3.3) Pub Date : 2023-10-03 Tanmay Dixit,Kuan-Chi Chen,Mary Caswell Stoddard,Lakshminarayanan Mahadevan,Christopher P Town,Claire N Spottiswoode
What makes a perfect signature? Optimal signatures should be consistent within individuals and distinctive between individuals. In defense against avian brood parasitism, some host species have evolved "signatures" of identity on their eggs, comprising interindividual variation in color and pattern. Tawny-flanked prinia (Prinia subflava) egg signatures facilitate recognition and rejection of parasitic
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Evolution under a model of functionally buffered deleterious mutations can lead to positive selection in protein-coding genes. Evolution (IF 3.3) Pub Date : 2023-10-03 Runxi Shen,Miwa Wenzel,Philipp W Messer,Charles F Aquadro
Selective pressures on DNA sequences often result in departures from neutral evolution that can be captured by the McDonald-Kreitman (MK) test. However, the nature of such selective forces often remains unknown to experimentalists. Amino acid fixations driven by natural selection in protein-coding genes are commonly associated with a genetic arms race or changing biological purposes, leading to proteins
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Developmental plasticity of thermal performance curve for reproduction in Drosophila melanogaster. Evolution (IF 3.3) Pub Date : 2023-09-28 Peter Klepsatel,Diana Knoblochová,Malleswara Dharanikota,Ľubomír Vidlička,Martina Gáliková
In ectotherms, body temperature is a crucial determinant of performance and fitness, as captured by thermal performance curves (TPCs). Since survival in variable environments is often facilitated by phenotypic plasticity, to reliably assess an organism's ability to cope with thermal changes, it is necessary to characterize not only TPCs but also their reaction norms. While previous studies have investigated
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Elevational Goldilocks zone underlies the exceptional diversity of a large lizard radiation (Liolaemus; Liolaemidae). Evolution (IF 3.3) Pub Date : 2023-09-26 Alexander Skeels,Damien Esquerré,Daria Lipsky,Loïc Pellissier,Lydian M Boschman
Mountains are among the most biodiverse regions on the planet, and how these landforms shape diversification through the interaction of biological traits and geo-climatic dynamics is integral to understanding global biodiversity. In this study we investigate the dual roles of climate change and mountain uplift on the evolution of a hyper diverse radiation, Liolaemus lizards, with a spatially explicit
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Rensch's Rule: linking intraspecific to evolutionary allometry. Evolution (IF 3.3) Pub Date : 2023-09-21 Carolina Reyes-Puig,Dean C Adams,Urtzi Enriquez-Urzelai,Antigoni Kaliontzopoulou
Sexual dimorphism describes phenotypic differences between the sexes; the most prominent of which is sexual size dimorphism (SSD). Rensch's Rule (RR) is an allometric trend in which SSD increases in male-larger taxa and decreases in female-larger ones. Covariation between a trait and overall size within and across species can both be affected by sexual and natural selection. Thus, intraspecific allometric
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Pleiotropic fitness effects across sexes and ages in the Drosophila genome and transcriptome. Evolution (IF 3.3) Pub Date : 2023-09-20 Heidi W S Wong,Luke Holman
Selection varies between categories of individuals, with far-reaching ramifications: sex-specific selection can impede or accelerate adaptation, and differences in selection between young and old individuals are ultimately responsible for senescence. Here, we measure early- and late-life fitness in adults of both sexes from the Drosophila genetic reference panel (DGRP), and perform quantitative genetic
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The fitness landscape of a community of Darwin's finches. Evolution (IF 3.3) Pub Date : 2023-09-06 Marc-Olivier Beausoleil,Paola Lorena Carrión-Avilés,Jeffrey Podos,Carlos Camacho,Julio Rabadán-González,Roxanne Richard,Kristen Lalla,Joost A M Raeymaekers,Sarah A Knutie,Luis F De León,Jaime A Chaves,Dale H Clayton,Jennifer A H Koop,Diana M T Sharpe,Kiyoko M Gotanda,Sarah K Huber,Rowan D H Barrett,Andrew P Hendry
Divergent natural selection should lead to adaptive radiation - that is, the rapid evolution of phenotypic and ecological diversity originating from a single clade. The drivers of adaptive radiations have often been conceptualized through the concept of "adaptive landscapes"; yet formal empirical estimates of adaptive landscapes for natural adaptive radiations have proven elusive. Here we use a 17-year
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Correction to: Macroevolutionary patterns in marine hermaphroditism. Evolution (IF 3.3) Pub Date : 2023-09-01
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Correction to: Lower survival of hybrid grosbeaks, but not towhees, suggests a molt divide disfavors hybrids. Evolution (IF 3.3) Pub Date : 2023-09-01
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Source-sink migration of natural enemies drives maladaptation of victim populations in sink habitats. Evolution (IF 3.3) Pub Date : 2023-07-27 Xiao-Lin Chu,Angus Buckling,Quan-Guo Zhang
Natural enemies are critical drivers of species biogeography, and they may often limit the evolutionary adaptation and persistence of victim populations in sink habitats. Source-sink migration is also a major determinant of adaptation in sink habitats. Here, we specifically suggest that source-sink migration of enemies reduces evolutionary adaptation of victim populations in sink habitats. The underlying
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Indirect genetic effects increase heritability estimates for male and female extra-pair reproduction. Evolution (IF 3.3) Pub Date : 2023-07-27 Sarah Dobson,Jamie Dunning,Terry Burke,Heung Ying Janet Chik,Julia Schroeder
The question of why females engage in extra-pair behaviors is long-standing in evolutionary biology. One suggestion is that these behaviors are maintained through pleiotropic effects on male extra-pair behaviors (genes controlling extra-pair reproduction are shared between sexes, but only beneficial to one sex, in this case, males). However, for this to evolve extra-pair reproduction must be both heritable
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Temperature-driven gene expression evolution in natural and laboratory populations highlights the crucial role of correlated fitness effects for polygenic adaptation. Evolution (IF 3.3) Pub Date : 2023-09-01 Dagny A V Thorhölludottir,Viola Nolte,Christian Schlötterer
The influence of pleiotropy on adaptive responses is a highly controversial topic, with limited empirical evidence available. Recognizing the pivotal role of the correlation of fitness effects, we designed an experiment to compare the adaptive gene expression evolution of natural and experimental populations. To test this, we studied the evolution of gene expression in response to temperature in two
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Unpacking the lifelong secrets of little penguins: individual quality, energy allocation, and stochasticity in defining fitness. Evolution (IF 3.3) Pub Date : 2023-09-01 Nicolas Joly,Andre Chiaradia,Jean-Yves Georges,Claire Saraux
While the heterogeneity among individuals of a population is more and more documented, questions on the paths through which it arises, particularly whether it is linked to fixed heterogeneity or chance alone, are still widely debated. Here, we tested how individual quality, energy allocation trade-offs, and environmental stochasticity define individual fitness. To do so, we simultaneously investigated