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Resistance to natural and synthetic gene drive systems. J. Evol. Biol. (IF 2.72) Pub Date : 2020-09-24 Tom A R Price,Nikolai Windbichler,Robert L Unckless,Andreas Sutter,Jan-Niklas Runge,Perran A Ross,Andrew Pomiankowski,Nicole L Nuckolls,Catherine Montchamp-Moreau,Nicole Mideo,Oliver Y Martin,Andri Manser,Mathieu Legros,Amanda M Larracuente,Luke Holman,John Godwin,Neil Gemmell,Cécile Courret,Anna Buchman,Luke G Barrett,Anna K Lindholm
Scientists are rapidly developing synthetic gene drive elements intended for release into natural populations. These are intended to control or eradicate disease vectors and pests, or to spread useful traits through wild populations for disease control or conservation purposes. However, a crucial problem for gene drives is the evolution of resistance against them, preventing their spread. Understanding
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Experimentally induced intrasexual mating competition and sex-specific evolution in female and male nematodes. J. Evol. Biol. (IF 2.72) Pub Date : 2020-09-17 Josefine Stångberg,Elina Immonen,Pilar Puimedon Moreno,Elisabeth Bolund
Sexual dimorphism in life history traits and their trade-offs is widespread among sexually reproducing animals, and is strongly influenced by the differences in reproductive strategies between the sexes. We investigated how intrasexual competition influenced specific life history traits, important to fitness, and their trade-offs in the outcrossing nematode Caenorhabditis remanei. Here, we altered
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Glucocorticoid levels are linked to lifetime reproductive success and survival of adult barn owls. J. Evol. Biol. (IF 2.72) Pub Date : 2020-09-17 Paul Béziers,Fränzi Korner-Nievergelt,Lukas Jenni,Alexandre Roulin,Bettina Almasi
Glucocorticoid hormones, such as corticosterone, are crucial in regulating daily life metabolism and energy expenditure, as well as promoting short-term physiological and behavioural responses to unpredictable environmental challenges. Therefore, glucocorticoids are considered to mediate trade-offs between survival and reproduction. Relatively little is known about how selection has shaped glucocorticoid
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Symbiont-mediated fly survival is independent of defensive symbiont genotype in the Drosophila melanogaster-Spiroplasma-wasp interaction. J. Evol. Biol. (IF 2.72) Pub Date : 2020-09-16 Jordan E Jones,Gregory D D Hurst
When a parasite attacks an insect, the outcome is commonly modulated by the presence of defensive heritable symbionts residing within the insect host. Previous studies noted markedly different strengths of Spiroplasma-mediated fly survival following attack by the same strain of wasp. One difference between the two studies was the strain of Spiroplasma used. We therefore performed a common garden laboratory
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Limited genetic parallels underlie convergent evolution of quantitative pattern variation in mimetic butterflies. J. Evol. Biol. (IF 2.72) Pub Date : 2020-09-16 Hannah E Bainbridge,Melanie N Brien,Carlos Morochz,Patricio A Salazar,Pasi Rastas,Nicola J Nadeau
Mimetic systems allow us to address the question of whether the same genes control similar phenotypes in different species. Although widespread parallels have been found for major effect loci, much less is known about genes that control quantitative trait variation. In this study, we identify and compare the loci that control subtle changes in the size and shape of forewing pattern elements in two
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Genetic and morphological divergence between Littorina fabalis ecotypes in Northern Europe. J. Evol. Biol. (IF 2.72) Pub Date : 2020-09-16 Juan Galindo,João Carvalho,Graciela Sotelo,Mårten Duvetorp,Diana Costa,Petri Kemppainen,Marina Panova,Antigoni Kaliontzopoulou,Kerstin Johannesson,Rui Faria
Low dispersal marine intertidal species facing strong divergent selective pressures associated with steep environmental gradients have a great potential to inform us about local adaptation and reproductive isolation. Among these, gastropods of the genus Littorina offer a unique system to study parallel phenotypic divergence resulting from adaptation to different habitats related with wave-exposure
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Repeatable social network node-based metrics across populations and contexts in a passerine. J. Evol. Biol. (IF 2.72) Pub Date : 2020-09-15 Mireia Plaza,Terry Burke,Tara Cox,Alexander Flynn-Carroll,Antje Girndt,Georgina Halford,Dominic A Martin,Moises Sanchez-Fortún,Alfredo Sánchez-Tójar,Jasmine Somerville,Julia Schroeder
Behavioral traits are considered animal personality traits when individuals differ consistently in their expression across time and across context. Here, we test this idea on three metrics derived from social interaction networks (strength, betweenness, closeness). Using experimental data from house sparrows in captive populations, and observational data from house sparrows in a wild population, we
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Evolution of chemotactic hitchhiking. J. Evol. Biol. (IF 2.72) Pub Date : 2020-09-14 Gurdip Uppal,Weiyi Hu,Dervis Vural
Bacteria typically reside in heterogeneous environments with various chemogradients where motile cells can gain an advantage over non-motile cells. Since motility is energetically costly, cells must optimize their swimming speed and behavior to maximize their fitness. Here we investigate how cheating strategies might evolve where slow or non-motile microbes exploit faster ones by sticking together
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Speciation and gene flow across an elevational gradient in New Guinea kingfishers. J. Evol. Biol. (IF 2.72) Pub Date : 2020-09-11 Ethan Linck,Benjamin G Freeman,John P Dumbacher
Closely related species with parapatric elevational ranges are ubiquitous in tropical mountains worldwide. The gradient speciation hypothesis proposes that these series are the result of in situ ecological speciation driven by divergent selection across elevation. Direct tests of this scenario have been hampered by the difficulty inferring the geographic arrangement of populations at the time of divergence
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Becoming creatures of habit: Among- and within-individual variation in nesting behaviour shift with age. J. Evol. Biol. (IF 2.72) Pub Date : 2020-09-08 David M Delaney,Luke A Hoekstra,Fredric J Janzen
The quantification of repeatability has enabled behavioural and evolutionary ecologists to assess the heritable potential of traits. For behavioural traits that vary across life, age-related variation should be accounted for to prevent biasing the microevolutionary estimate of interest. Moreover, to gain a mechanistic understanding of ontogenetic variation in behaviour, among- and within-individual
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Rapid evolution and plasticity of genitalia. J. Evol. Biol. (IF 2.72) Pub Date : 2020-09-08 E Dale Broder,Cameron K Ghalambor,Corey A Handelsman,Emily W Ruell,David N Reznick,Lisa M Angeloni
Genital morphology exhibits tremendous variation and is intimately linked with fitness. Sexual selection, nonmating natural selection and neutral forces have been explored as potential drivers of genital divergence. Though less explored, genitalia may also be plastic in response to the developmental environment. In poeciliid fishes, the length of the male intromittent organ, the gonopodium, may be
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Offspring sex ratios are stable across the life-course in Drosophila simulans. J. Evol. Biol. (IF 2.72) Pub Date : 2020-09-08 Ruth Archer,Matthew Carey,Tomohito Noda,Stefan Store,David Hosken
Within populations, adult sex ratios influence population growth and extinction risk, mating behaviors and parental care. Additionally, sex ratio adjustment can have pronounced effects on individual fitness. Accordingly, it is important that we understand how often, and why, offspring sex ratios deviate from parity. In Drosophila melanogaster, females appear to improve their fitness by producing fewer
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Endosymbionts facilitate rapid evolution in a polyphagous herbivore. J. Evol. Biol. (IF 2.72) Pub Date : 2020-09-07 Paul A Lenhart,Jennifer A White
Maternally transmitted bacterial symbionts can be important mediators of the interactions between insect herbivores and their foodplants. These symbionts are often facultative (present in some host individuals but not others) and can have large effects on their host's phenotype, thus giving rise to heritable variation upon which selection can act. In the cowpea aphid (Aphis craccivora) it has been
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Transcriptome-wide genotype-phenotype associations in Daphnia in a predation risk environment. J. Evol. Biol. (IF 2.72) Pub Date : 2020-09-07 Suda Parimala Ravindran,Verena Tams,Mathilde Cordellier
Phenotypic variation plays an important role in how species cope with environmental challenges. Pinpointing which genes and genomic regions are underlying phenotypic variability thus helps to understand the processes of acclimation and adaptation. We used Daphnia as a system to identify candidates playing a role in phenotypic variation related to a predation risk environment with a genome-wide association
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Within-population variation in female mating preference affects the opportunity for sexual selection and the evolution of male traits, but things are not as simple as expected. J. Evol. Biol. (IF 2.72) Pub Date : 2020-09-01 Cristiane H Millan,Glauco Machado,Danilo G Muniz
Females from the same population usually have phenotypic variation in their mating preferences. However, the effects of this within-population variation on the sexual selection acting on males are still unclear. We used individual-based models to explore how within-population variation in female preference (i.e. which male trait value is preferred) and preference strength (i.e. how strong the preference
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Mimicry genes reduce pre-adult survival rate in Papilio polytes: A possible new mechanism for maintaining female-limited polymorphism in Batesian mimicry. J. Evol. Biol. (IF 2.72) Pub Date : 2020-08-25 Mitsuho Katoh,Haruki Tatsuta,Kazuki Tsuji
Batesian mimicry, in which harmless organisms resemble unpalatable or harmful species, is a well-studied adaptation for predation avoidance. The females of some Batesian mimic species comprise mimetic and nonmimetic individuals. Mimetic females of such polymorphic species clearly have a selective advantage due to decreased predation pressure, but the selective forces that maintain nonmimetic females
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Resource allocation is determined by both parents and offspring in a burying beetle. J. Evol. Biol. (IF 2.72) Pub Date : 2020-08-14 Maarit I Mäenpää,Per T Smiseth
Parents and offspring have different optima for the level of parental resource allocation and the timing of nutritional independence. Theoretical models assume that either parents or offspring control the allocation of resources within a brood; however, control may also be mutual. Here, we investigate whether the resolution of parent-offspring conflict is biased towards cues from either the parents'
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Body size and climate as predictors of plumage colouration and sexual dichromatism in parrots. J. Evol. Biol. (IF 2.72) Pub Date : 2020-08-14 Luisana Carballo,Kaspar Delhey,Mihai Valcu,Bart Kempenaers
Psittaciformes (parrots, cockatoos and lorikeets) comprise one of the most colourful clades of birds. Their unique pigments and safe cavity nesting habits are two potential explanations for their colourful character. However, plumage colour varies substantially between parrot species and sometimes also between males and females of the same species. Here, we use comparative analyses to evaluate what
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Modification of reproductive schedule in response to pathogen exposure in a wild insect: Support for the terminal investment hypothesis. J. Evol. Biol. (IF 2.72) Pub Date : 2020-08-11 Kari Zurowski,Alida F Janmaat,Todd Kabaluk,Jenny S Cory
Trade-offs in the time and energy allocated to different functions, such as reproductive activities, can be driven by alterations in condition which reduce resources, often in response to extrinsic factors such as pathogens or parasites. When individuals are challenged by a pathogen, they may either reduce reproduction as a cost of increasing defence mechanisms or, alternatively, modify reproductive
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Riverscape properties contribute to the origin and structure of a hybrid zone in a Neotropical freshwater fish. J. Evol. Biol. (IF 2.72) Pub Date : 2020-08-09 Silvia Britto Barreto,L Lacey Knowles,Paulo Roberto Antunes de Mello Affonso,Henrique Batalha-Filho
Understanding the structure of hybrid zones provides valuable insights about species boundaries and speciation, such as the evolution of barriers to gene flow and the strength of selection. In river networks, studying evolutionary processes in hybrid zones can be especially challenging, given the influence of past and current river properties along with biological species-specific traits. Here, we
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Intersexual differences in density-dependent dispersal and their evolutionary drivers. J. Evol. Biol. (IF 2.72) Pub Date : 2020-08-08 Elisa Plazio,Tomasz Margol,Piotr Nowicki
Dispersal is well recognized as a major driver of evolutionary processes in local populations. Nevertheless, dispersal abilities should also be perceived as a life-history trait, being subject to evolutionary changes in response to various drivers. Empirical studies investigating these drivers rarely consider that they may influence male and female dispersal differently. The purpose of our study was
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Heterospecific mating interactions as an interface between ecology and evolution. J. Evol. Biol. (IF 2.72) Pub Date : 2020-08-06 Daisuke Kyogoku,David Wheatcroft
Reproductive interference (costly interspecific sexual interactions) is well-understood to promote divergence in mating-relevant traits (i.e. reproductive character displacement: RCD), but it can also reduce population growth, eventually leading to local extinction of one of the species. The ecological and evolutionary processes driven by reproductive interference can interact with each other. These
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The evolution of sexually dimorphic cuticular hydrocarbons in blowflies (Diptera: Calliphoridae). J. Evol. Biol. (IF 2.72) Pub Date : 2020-07-28 Nathan J Butterworth,James F Wallman,Falko P Drijfhout,Nikolas P Johnston,Paul A Keller,Phillip G Byrne
Cuticular hydrocarbons (CHCs) are organic compounds found on the cuticles of all insects which can act as close-contact pheromones, while also providing a hydrophobic barrier to water loss. Given their widespread importance in sexual behaviour and survival, CHCs have likely contributed heavily to the adaptation and speciation of insects. Despite this, the patterns and mechanisms of their diversification
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Divergence of seminal fluid gene expression and function among natural snail populations. J. Evol. Biol. (IF 2.72) Pub Date : 2020-07-22 Yumi Nakadera,Alice Thornton Smith,Léa Daupagne,Marie-Agnès Coutellec,Joris M Koene,Steven A Ramm
Seminal fluid proteins (SFPs) can trigger drastic changes in mating partners, mediating post-mating sexual selection and associated sexual conflict. Also, cross-species comparisons have demonstrated that SFPs evolve rapidly and hint that post-mating sexual selection drives their rapid evolution. In principle, this pattern should be detectable within species as rapid among-population divergence in SFP
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Two-hundred million years of anuran body-size evolution in relation to geography, ecology and life history. J. Evol. Biol. (IF 2.72) Pub Date : 2020-07-16 Molly C Womack,Rayna C Bell
Surprisingly, little is known about body-size evolution within the most diverse amphibian order, anurans (frogs and toads), despite known effects of body size on the physiological, ecological and life-history traits of animals more generally. Here, we examined anuran body-size evolution among 2,434 species with over 200 million years of shared evolutionary history. We found clade-specific evolutionary
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Cycles of trans-Arctic dispersal and vicariance, and diversification of the amphi-boreal marine fauna. J. Evol. Biol. (IF 2.72) Pub Date : 2020-07-16 Hanna M Laakkonen,Michael Hardman,Petr Strelkov,Risto Väinölä
The amphi-boreal faunal element comprises closely related species and conspecific populations with vicarious distributions in the North Atlantic and North Pacific basins. It originated from an initial trans-Arctic dispersal in the Pliocene after the first opening of the Bering Strait, and subsequent inter-oceanic vicariance through the Pleistocene when the passage through the Arctic was severed by
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Conserved ZZ/ZW sex chromosomes in Caribbean croaking geckos (Aristelliger: Sphaerodactylidae). J. Evol. Biol. (IF 2.72) Pub Date : 2020-07-14 Shannon E Keating,Aaron H Griffing,Stuart V Nielsen,Daniel P Scantlebury,Tony Gamble
Current understanding of sex chromosome evolution is largely dependent on species with highly degenerated, heteromorphic sex chromosomes, but by studying species with recently evolved or morphologically indistinct sex chromosomes we can greatly increase our understanding of sex chromosome origins, degeneration and turnover. Here, we examine sex chromosome evolution and stability in the gecko genus
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Latitudinal variation in norms of reaction of phenology in the greater duckweed Spirodela polyrhiza. J. Evol. Biol. (IF 2.72) Pub Date : 2020-07-13 Harry W Hitsman,Andrew M Simons
Variable environments may result in the evolution of adaptive phenotypic plasticity when cues reliably indicate an appropriate phenotype-environment match. Although adaptive plasticity is well established for phenological traits expressed across environments, local differentiation in norms of reaction is less well studied. The switch from the production of regular fronds to overwintering 'turions'
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Sexual and ecological selection on a sexual conflict gene. J. Evol. Biol. (IF 2.72) Pub Date : 2020-07-12 Agata Plesnar-Bielak,Anna M Skwierzyńska,Jacek Radwan
Sexual selection and conflict can act on genes with important metabolic functions, potentially shaping standing genetic variance in such genes and thus evolutionary potential of populations. Here, using experimental evolution, we show how reproductive competition intensity and thermal environment affect selection on phosphogluconate dehydrogenase (6Pgdh)-a metabolic gene involved in sexual selection
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The genomic view of diversification. J. Evol. Biol. (IF 2.72) Pub Date : 2020-07-11 Julie Marin,Guillaume Achaz,Anton Crombach,Amaury Lambert
The process of species diversification is traditionally summarized by a single tree, the species tree, whose reconstruction from molecular data is hindered by frequent conflicts between gene genealogies. Here, we argue that instead of seeing these conflicts as nuisances, we can exploit them to inform the diversification process itself. We adopt a gene-based view of diversification to model the ubiquitous
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A rapidly evolved shift in life-history timing during ecological speciation is driven by the transition between developmental phases. J. Evol. Biol. (IF 2.72) Pub Date : 2020-07-10 Thomas H Q Powell,Andrew Nguyen,Qinwen Xia,Jeffrey L Feder,Gregory J Ragland,Daniel A Hahn
For insect species in temperate environments, seasonal timing is often governed by the regulation of diapause, a complex developmental programme that allows insects to weather unfavourable conditions and synchronize their life cycles with available resources. Diapause development consists of a series of distinct phases including initiation, maintenance, termination and post-diapause development. The
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Functional implications of the specialized staminal appendages in alpine ginger (Roscoea spp.: Zingiberaceae). J. Evol. Biol. (IF 2.72) Pub Date : 2020-07-06 Babu Ram Paudel,Qing-Jun Li
Floral organs are widely believed to enhance the pollination and reproductive success of angiosperms. However, the functional implication of some floral structures is still unknown. In this study, we explored the functional role of staminal appendages on male and female reproductive success of Himalayan Roscoea spp. and tested if their function differed between species with biotic pollination and autonomous
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Morph-dependent fitness and directional change of morph frequencies over time in a Dutch population of Common buzzards Buteo buteo. J. Evol. Biol. (IF 2.72) Pub Date : 2020-07-06 Elena Frederika Kappers,Christiaan de Vries,Anneke Alberda,Sylvia Kuhn,Mihai Valcu,Bart Kempenaers,Christiaan Both
How genetic polymorphisms are maintained in a population is a key question in evolutionary ecology. Previous work on a plumage colour polymorphism in the common buzzard Buteo buteo suggested heterozygote advantage as the mechanism maintaining the co-existence of three morphs (light, intermediate and dark). We took advantage of 20 years of life history data collected in a Dutch population to replicate
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Antagonistic interactions subdue inter-species green-beard cooperation in bacteria. J. Evol. Biol. (IF 2.72) Pub Date : 2020-07-05 Santosh Sathe,Rolf Kümmerli
Cooperation can be favoured through the green-beard mechanism, where a set of linked genes encodes both a cooperative trait and a phenotypic marker (green beard), which allows carriers of the trait to selectively direct cooperative acts to other carriers. In theory, the green-beard mechanism should favour cooperation even when interacting partners are totally unrelated at the genome level. Here, we
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Female sperm storage mediates post-copulatory costs and benefits of ejaculate anticipatory plasticity in the guppy. J. Evol. Biol. (IF 2.72) Pub Date : 2020-07-02 Gabriela Cardozo,Alessandro Devigili,Pietro Antonelli,Andrea Pilastro
Males of many species evolved the capability of adjusting their ejaculate phenotype in response to social cues to match the expected mating conditions. When females store sperm for a prolonged time, the expected fitness return of plastic adjustments of ejaculate phenotype may depend on the interval between mating and fertilization. Although prolonged female sperm storage (FSS) increases the opportunity
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Ecological fitting is the forerunner to diversification in a plant virus with broad host range. J. Evol. Biol. (IF 2.72) Pub Date : 2020-07-02 Adrián Peláez,Michael J McLeish,Ricky R Paswan,Bhumika Dubai,Aurora Fraile,Fernando García-Arenal
The evolution and diversification of ssRNA plant viruses are often examined under reductionist conditions that ignore potentially much wider biotic interactions. The host range of a plant virus is central to interactions at higher levels that are organised by both fitness and ecological criteria. Here we employ a strategy to minimise sampling biases across distinct plant communities, and combine it
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Change in sexual signalling traits outruns morphological divergence across an ecological gradient in the post-glacial radiation of the songbird genus Junco. J. Evol. Biol. (IF 2.72) Pub Date : 2020-06-30 Guillermo Friis,Borja Milá
The relative roles of natural and sexual selection in promoting evolutionary lineage divergence remains controversial and difficult to assess in natural systems. Local adaptation through natural selection is known to play a central role in promoting evolutionary divergence, yet secondary sexual traits can vary widely among species in recent radiations, suggesting that sexual selection may also be important
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Post-glacial establishment of locally adapted fish populations over a steep salinity gradient. J. Evol. Biol. (IF 2.72) Pub Date : 2020-06-23 Erica H Leder,Carl André,Alan Le Moan,Mats Töpel,Anders Blomberg,Jonathan N Havenhand,Kai Lindström,Filip A M Volckaert,Charlotta Kvarnemo,Kerstin Johannesson,Ola Svensson
Studies of colonization of new habitats that appear from rapidly changing environments are interesting and highly relevant to our understanding of divergence and speciation. Here, we analyse phenotypic and genetic variation involved in the successful establishment of a marine fish (sand goby, Pomatoschistus minutus) over a steep salinity drop from 35 PSU in the North Sea (NE Atlantic) to two PSU in
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Reproductive senescence and parental effects in an indeterminate grower. J. Evol. Biol. (IF 2.72) Pub Date : 2020-06-23 Charlotte Depeux,Jean-François Lemaître,Jérôme Moreau,François-Xavier Dechaume-Moncharmont,Tiffany Laverre,Hélène Pauhlac,Jean-Michel Gaillard,Sophie Beltran-Bech
Reproductive senescence is the decrease of reproductive performance with increasing age and can potentially include trans-generational effects as the offspring produced by old parents might have a lower fitness than those produced by young parents. This negative effect may be caused either by the age of the father, mother or the interaction between the ages of both parents. Using the common woodlouse
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Secondary contact zones of closely-related Erebia butterflies overlap with narrow phenotypic and parasitic clines. J. Evol. Biol. (IF 2.72) Pub Date : 2020-06-23 Kay Lucek,Roger K Butlin,Theofania Patsiou
Zones of secondary contact between closely related taxa are a common legacy of the Quaternary ice ages. Despite their abundance, the factors that keep species apart and prevent hybridization are often unknown. Here, we study a very narrow contact zone between three closely related butterfly species of the Erebia tyndarus species complex. Using genomic data, we first determined whether gene flow occurs
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The loss of self-incompatibility in a range expansion. J. Evol. Biol. (IF 2.72) Pub Date : 2020-06-18 Francisco Encinas-Viso,Andrew G Young,John R Pannell
It is commonly observed that plant species' range margins are enriched for increased selfing rates and, in otherwise self-incompatible species, for self-compatibility (SC). This has often been attributed to a response to selection under mate and/or pollinator limitation. However, range expansion can also cause reduced inbreeding depression, and this could facilitate the evolution of selfing in the
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Patterns of genomic divergence and introgression between Japanese stickleback species with overlapping breeding habitats. J. Evol. Biol. (IF 2.72) Pub Date : 2020-06-17 Mark Ravinet,Manabu Kume,Asano Ishikawa,Jun Kitano
With only a few absolute geographic barriers in marine environments, the factors maintaining reproductive isolation among marine organisms remain elusive. However, spatial structuring in breeding habitat can contribute to reproductive isolation. This is particularly important for marine organisms that migrate to use fresh- or brackish water environments to breed. The Japanese Gasterosteus stickleback
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Differences in the contributions of sex linkage and androgen regulation to sex-biased gene expression in juvenile and adult sticklebacks. J. Evol. Biol. (IF 2.72) Pub Date : 2020-06-13 Jun Kitano,Ryo Kakioka,Asano Ishikawa,Atsushi Toyoda,Makoto Kusakabe
Different evolutionary interests between males and females can lead to the evolution of sexual dimorphism. However, intersex genetic correlations due to the shared genome can constrain the evolution of sexual dimorphism, resulting in intra-locus sexual conflict. One of the mechanisms resolving this conflict is sex linkage, which allows males and females to carry different alleles on sex chromosomes
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Hidden genetic variance contributes to increase the short-term adaptive potential of selfing populations. J. Evol. Biol. (IF 2.72) Pub Date : 2020-06-09 Josselin Clo,Joëlle Ronfort,Diala Abu Awad
Standing genetic variation is considered a major contributor to the adaptive potential of species. The low heritable genetic variation observed in self-fertilizing populations has led to the hypothesis that species with this mating system would be less likely to adapt. However, a non-negligible amount of cryptic genetic variation for polygenic traits, accumulated through negative linkage disequilibrium
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Illustrating the importance of meta-analysing variances alongside means in ecology and evolution. J. Evol. Biol. (IF 2.72) Pub Date : 2020-06-08 Alfredo Sánchez-Tójar,Nicholas P Moran,Rose E O'Dea,Klaus Reinhold,Shinichi Nakagawa
Meta-analysis is increasingly used in biology to both quantitatively summarize available evidence for specific questions and generate new hypotheses. Although this powerful tool has mostly been deployed to study mean effects, there is untapped potential to study effects on (trait) variance. Here, we use a recently published data set as a case study to demonstrate how meta-analysis of variance can be
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The influence of immune activation on thermal tolerance along a latitudinal cline. J. Evol. Biol. (IF 2.72) Pub Date : 2020-06-07 Tobias E Hector,Carla M Sgrò,Matthew D Hall
Global change is shifting both temperature patterns and the geographic distribution of pathogens, and infection has already been shown to substantially reduce host thermal performance, potentially placing populations at greater risk that previously thought. But what about individuals that are able to successfully clear an infection? Whilst the direct damage a pathogen causes will likely lead to reductions
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Selection on fruit traits is mediated by the interplay between frugivorous birds, fruit flies, parasitoid wasps and seed-dispersing ants. J. Evol. Biol. (IF 2.72) Pub Date : 2020-06-26 Facundo X Palacio,Adam M Siepielski,Mariela V Lacoretz,Mariano Ordano
Every organism on Earth must cope with a multitude of species interactions both directly and indirectly throughout its life cycle. However, how selection from multiple species occupying different trophic levels affects diffuse mutualisms has received little attention. As a result, how a given species amalgamates the combined effects of selection from multiple mutualists and antagonists to enhance its
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Floral trait differentiation in Anacamptis coriophora: Phenotypic selection on scents, but not on colour. J. Evol. Biol. (IF 2.72) Pub Date : 2020-06-05 Nina Joffard,Iris Le Roncé,Alban Langlois,Julien Renoult,Bruno Buatois,Laurent Dormont,Bertrand Schatz
Current divergent selection may promote floral trait differentiation among conspecific populations in flowering plants. However, whether this applies to complex traits such as colour or scents has been little studied, even though these traits often vary within species. In this study, we compared floral colour and odour as well as selective pressures imposed upon these traits among seven populations
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Antagonistic species interaction drives selection for sex in a predator-prey system. J. Evol. Biol. (IF 2.72) Pub Date : 2020-06-05 Hanna R Koch,Sophia Wagner,Lutz Becks
The evolutionary maintenance of sexual reproduction has long challenged biologists as the majority of species reproduce sexually despite inherent costs. Providing a general explanation for the evolutionary success of sex has thus proven difficult and resulted in numerous hypotheses. A leading hypothesis suggests that antagonistic species interaction can generate conditions selecting for increased sex
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Dunnock social status correlates with sperm speed, but fast sperm does not always equal high fitness. J. Evol. Biol. (IF 2.72) Pub Date : 2020-05-30 Carlos E Lara,Helen R Taylor,Benedikt Holtmann,Sheri L Johnson,Eduardo S A Santos,Neil J Gemmell,Shinichi Nakagawa
Sperm competition theory predicts that males should modulate sperm investment according to their social status. Sperm speed, one proxy of sperm quality, also influences the outcome of sperm competition because fast sperm cells may fertilize eggs before slow sperm cells. We evaluated whether the social status of males predicted their sperm speed in a wild population of dunnocks (Prunella modularis)
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Death feigning as an adaptive anti-predator behaviour: Further evidence for its evolution from artificial selection and natural populations. J. Evol. Biol. (IF 2.72) Pub Date : 2020-05-19 Kana Konishi,Kentarou Matsumura,Wataru Sakuno,Takahisa Miyatake
Death feigning is considered to be an adaptive antipredator behaviour. Previous studies on Tribolium castaneum have shown that prey which death feign have a fitness advantage over those that do not when using a jumping spider as the predator. Whether these effects are repeatable across species or whether they can be seen in nature is, however, unknown. Therefore, the present study involved two experiments:
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Warmer temperatures enhance beneficial mutation effects. J. Evol. Biol. (IF 2.72) Pub Date : 2020-05-18 Xiao-Lin Chu,Da-Yong Zhang,Angus Buckling,Quan-Guo Zhang
Temperature determines the rates of all biochemical and biophysical processes, and is also believed to be a key driver of macroevolutionary patterns. It is suggested that physiological constraints at low temperatures may diminish the fitness advantages of otherwise beneficial mutations; by contrast, relatively high, benign, temperatures allow beneficial mutations to efficiently show their phenotypic
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Effects of inbreeding on behavioural plasticity of parent-offspring interactions in a burying beetle. J. Evol. Biol. (IF 2.72) Pub Date : 2020-05-29 Tom Ratz,Anastasia Perodaskalaki,Jacob Moorad,Per T Smiseth
Inbreeding depression is defined as a fitness decline in progeny resulting from mating between related individuals, the severity of which may vary across environmental conditions. Such inbreeding-by-environment interactions might reflect that inbred individuals have a lower capacity for adjusting their phenotype to match different environmental conditions better, as shown in prior studies on developmental
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The target of selection matters: An established resistance-development-time negative genetic trade-off is not found when selecting on development time. J. Evol. Biol. (IF 2.72) Pub Date : 2020-05-10 Lewis J Bartlett,Elisa Visher,Yazmin Haro,Katherine E Roberts,Mike Boots
Trade-offs are fundamental to evolutionary outcomes and play a central role in eco-evolutionary theory. They are often examined by experimentally selecting on one life-history trait and looking for negative correlations in other traits. For example, populations of the moth Plodia interpunctella selected to resist viral infection show a life-history cost with longer development times. However, we rarely
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Diversity in CRISPR-based immunity protects susceptible genotypes by restricting phage spread and evolution. J. Evol. Biol. (IF 2.72) Pub Date : 2020-05-08 Jack Common,David Walker-Sünderhauf,Stineke van Houte,Edze R Westra
Diversity in host resistance often associates with reduced pathogen spread. This may result from ecological and evolutionary processes, likely with feedback between them. Theory and experiments on bacteria-phage interactions have shown that genetic diversity of the bacterial adaptive immune system can limit phage evolution to overcome resistance. Using the CRISPR-Cas bacterial immune system and lytic
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Condition-dependent mortality exacerbates male (but not female) reproductive senescence and the potential for sexual conflict. J. Evol. Biol. (IF 2.72) Pub Date : 2020-04-26 Zahida Sultanova,Roberto García-Roa,Pau Carazo
Disentangling the relationship between age and reproduction is central to understand life-history evolution, and recent evidence shows that considering condition-dependent mortality is a crucial piece of this puzzle. For example, nonrandom mortality of 'low-condition' individuals can lead to an increase in average lifespan. However, selective disappearance of such low-condition individuals may also
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Co-foundress confinement elicits kinship effects in a naturally sub-social parasitoid. J. Evol. Biol. (IF 2.72) Pub Date : 2020-04-22 Mohamed Khadar Abdi,Daniela Lupi,Ian C W Hardy
Kinship among interacting individuals is often associated with sociality and also with sex ratio effects. Parasitoids in the bethylid genus Goniozus are sub-social, with single foundress females exhibiting post-ovipositional maternal care via short-term aggressive host and brood defence against conspecific females. Due to local mate competition (LMC) and broods normally being produced by a single foundress
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Experimental evidence for accelerated adaptation to desiccation through sexual selection on males. J. Evol. Biol. (IF 2.72) Pub Date : 2020-04-21 Aline Gibson Vega,W Jason Kennington,Joseph L Tomkins,Robert J Dugand
The impact of sexual selection on the adaptive process remains unclear. On the one hand, sexual selection might hinder adaptation by favouring costly traits and preferences that reduce nonsexual fitness. On the other hand, condition dependence of success in sexual selection may accelerate adaptation. Here, we used replicate populations of Drosophila melanogaster to artificially select on male desiccation
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Delusions of grandeur: Seed count is not a good fitness proxy under individual variation in phenology. J. Evol. Biol. (IF 2.72) Pub Date : 2020-04-20 Lina Wen,Andrew M Simons
The concept of fitness is central to evolutionary biology, yet it is difficult to define and to measure. In plant biology, fitness is often measured as seed count. However, under an array of circumstances, seed count may be a biased proxy of fitness, for example when individuals vary in allocation to sexual versus asexual reproduction. A more subtle example, but also likely to be important in natural