Journal of Evolutionary Biology最新文献_第8页

Behavioural mimicry among poison frogs diverges during close-range encounters with predators. 在与捕食者的近距离接触中，毒蛙的行为模仿出现了分歧。

IF 2.1 3区生物学

Journal of Evolutionary Biology Pub Date : 2025-05-19 DOI: 10.1093/jeb/voaf038

James B Barnett, Brendan L McEwen, Isaac Kinley, Hannah M Anderson, Justin Yeager

{"title":"Behavioural mimicry among poison frogs diverges during close-range encounters with predators.","authors":"James B Barnett, Brendan L McEwen, Isaac Kinley, Hannah M Anderson, Justin Yeager","doi":"10.1093/jeb/voaf038","DOIUrl":"10.1093/jeb/voaf038","url":null,"abstract":"Aposematic species signal their unpalatability to potential predators with recognizable, and frequently conspicuous, colour patterns. These visual signals are often also associated with bold behaviour and a reduced propensity to escape from approaching predators. Bold behaviours may act as an aversive signal and allow defended prey to avoid the energetic/opportunity costs that arise from fleeing predators. For Batesian mimics, non-defended species which replicate the colours of defended models, behavioural mimicry may also improve mimic fidelity and reduce energetic/opportunity costs. However, as predators may test the honesty of aposematic signals through sampling behaviour, Batesian mimics can be at high risk during close-range interactions with predators. This raises the question of whether/when Batesian mimics should deviate from behavioural mimicry and initiate more extensive escape behaviour. Here, we exposed the chemically defended poison frog Ameerega bilinguis and its (non-toxic) Batesian mimic Allobates zaparo to a simulated predator encounter. We predicted Al. zaparo would escape to a greater distance and in a more erratic manner than Am. bilinguis. Yet, contrary to our predictions, Al. zaparo did not flee far from predators. It was, however, more likely to initiate escape prior to physical contact from the predator. We suggest that bold behaviour coupled with pre-emptive movement allows Al. zaparo to retain the benefits of behavioural mimicry while reducing the likelihood that predators will test signal honesty. Our data highlight that when examining the evolution of mimicry, we must consider both morphological and behavioural traits, as well as how risk to the prey may change how they behave throughout the predation sequence.","PeriodicalId":50198,"journal":{"name":"Journal of Evolutionary Biology","volume":" ","pages":"663-671"},"PeriodicalIF":2.1,"publicationDate":"2025-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143755606","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Inheritance of somatic mutations can affect fitness in monkeyflowers. 体细胞突变的遗传可以影响猴花的适应性。

IF 2.1 3区生物学

Journal of Evolutionary Biology Pub Date : 2025-05-19 DOI: 10.1093/jeb/voaf033

Matthew A Streisfeld, Jessie C Crown, Jack J McLean, Aidan W Short, Mitchell B Cruzan

{"title":"Inheritance of somatic mutations can affect fitness in monkeyflowers.","authors":"Matthew A Streisfeld, Jessie C Crown, Jack J McLean, Aidan W Short, Mitchell B Cruzan","doi":"10.1093/jeb/voaf033","DOIUrl":"10.1093/jeb/voaf033","url":null,"abstract":"Plants have the ability to transmit mutations to progeny that arise through both meiotic and mitotic (somatic) cell divisions. This is because the same meristem cells responsible for vegetative growth will also generate gametes for sexual reproduction. Despite the potential for somatic mutations to contribute to genetic variation and adaptation, their role in plant evolution remains largely unexplored. We conducted experiments with the bush monkeyflower (Mimulus aurantiacus) to assess the phenotypic effects of somatic mutations inherited across generations. By generating self-pollinations within a flower (autogamy) or between flowers on different stems of the same plant (geitonogamy), we tracked the effects of somatic mutations transmitted to progeny. Autogamy and geitonogamy lead to different segregation patterns of somatic mutations among stems, with only autogamy resulting in offspring that are homozygous for somatic mutations specific to that stem. This allowed us to compare average phenotypic differences between pollination treatments that could be attributed to the inheritance of somatic variants. While most experimental units showed no impacts on fitness, in some cases, we detected increased seed production, as well as significant increases in drought tolerance, even though M. aurantiacus is already well adapted to drought conditions. We also found increased variance in drought tolerance following autogamy, consistent with the hypothesis that somatic mutations transmitted between generations can impact fitness. These results highlight the potential role of inherited somatic mutations as a relevant source of genetic variation in plant evolution.","PeriodicalId":50198,"journal":{"name":"Journal of Evolutionary Biology","volume":" ","pages":"630-638"},"PeriodicalIF":2.1,"publicationDate":"2025-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143736248","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Genetic and habitat complexity effects on unpredictability in escape behaviour of a grasshopper species. 遗传和生境复杂性对蝗虫逃避行为不可预测性的影响。

IF 2.1 3区生物学

Journal of Evolutionary Biology Pub Date : 2025-05-19 DOI: 10.1093/jeb/voaf030

Gabe Winter, Holger Schielzeth

{"title":"Genetic and habitat complexity effects on unpredictability in escape behaviour of a grasshopper species.","authors":"Gabe Winter, Holger Schielzeth","doi":"10.1093/jeb/voaf030","DOIUrl":"10.1093/jeb/voaf030","url":null,"abstract":"The debate surrounding the role of genetic and environmental factors in shaping behaviour has a long tradition. However, their effects on complex behaviours such as unpredictability in anti-predator strategies remain poorly understood. Behaving unpredictably when escaping predators may increase the prey's chances of survival, especially when prey can rely on a complex habitat providing camouflage and shelter opportunities. We explored the effects of genetic and environmental influences on escape strategies of the steppe grasshopper Chorthippus dorsatus. Individuals from controlled breeding had been randomly assigned to one of two environmental complexity treatments during ontogeny. We then quantified escape behaviour in a large cohort through burst experiments. Using a multivariate double hierarchical animal model, we analysed the effects of pedigree and environmental complexity on both inter- and intra-individual variance in three components of escape behaviour: flight initiation distance (FID), jump distance, and jump angle. Habitat complexity affected average jump angle, but not the average FID or jump distance, nor unpredictability in any of the three traits. Pedigree relatedness accounted for 5%-6% of the total variance in average FID and average jump distance and 7% of the variance in unpredictability in jump angle. Genetic correlations suggest a behavioural syndrome structure in escape strategies that involve FID (a potential indicator of boldness). Our study demonstrates that unpredictability in escape behaviour has the potential to evolve by natural selection, as some of its components are heritable. Furthermore, we show that although habitat complexity represents a strong environmental treatment, its lasting effects during ontogeny on escape behaviour are minimal.","PeriodicalId":50198,"journal":{"name":"Journal of Evolutionary Biology","volume":" ","pages":"618-629"},"PeriodicalIF":2.1,"publicationDate":"2025-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143677400","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

High altitude favours long-chained cuticular hydrocarbons in Drosophila. 高海拔有利于果蝇的长链表皮碳氢化合物。

IF 2.1 3区生物学

Journal of Evolutionary Biology Pub Date : 2025-05-19 DOI: 10.1093/jeb/voaf029

Abhishek Nair, Harshad Vijay Mayekar, Manmohan D Sharma, Divita Garg, Christopher Mitchell, David J Hosken, Subhash Rajpurohit

{"title":"High altitude favours long-chained cuticular hydrocarbons in Drosophila.","authors":"Abhishek Nair, Harshad Vijay Mayekar, Manmohan D Sharma, Divita Garg, Christopher Mitchell, David J Hosken, Subhash Rajpurohit","doi":"10.1093/jeb/voaf029","DOIUrl":"10.1093/jeb/voaf029","url":null,"abstract":"Cuticular hydrocarbons (CHCs) are key components of the insect cuticle and contribute to the wide geographical distribution of this taxon. Many studies have investigated sex and population differences in CHC profiles, with these investigations mostly focusing on latitudinal CHC variation, whereas CHC variation across altitudinal transects is less well-studied. Here, we tested whether CHC profiles vary along an altitudinal gradient in the cosmopolitan vinegar fly Drosophila melanogaster. We collected from three populations of D. melanogaster in the Western Himalayas at altitudes ranging from 760 to 2,592 m above sea level and tested their CHC profiles for standing and plastic variation. We found quantitative differences in 25 CHCs across populations, and at higher elevations, males and females expressed higher amounts of particular long-chained hydrocarbons. We also found plastic shifts in CHC profiles in all three populations when flies were exposed to desiccating conditions. Overall, our findings suggest that there is an altitudinal cline in CHCs. However, this does not mirror the well-established latitudinal clines in fly hydrocarbons.","PeriodicalId":50198,"journal":{"name":"Journal of Evolutionary Biology","volume":" ","pages":"606-617"},"PeriodicalIF":2.1,"publicationDate":"2025-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143665268","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Can transcriptome size and off-target effects explain the contrasting evolution of mitochondrial vs nuclear RNA editing? 转录组大小和脱靶效应能否解释线粒体和核RNA编辑的差异进化？

IF 2.1 3区生物学

Journal of Evolutionary Biology Pub Date : 2025-05-05 DOI: 10.1093/jeb/voaf042

Daniel B Sloan

{"title":"Can transcriptome size and off-target effects explain the contrasting evolution of mitochondrial vs nuclear RNA editing?","authors":"Daniel B Sloan","doi":"10.1093/jeb/voaf042","DOIUrl":"https://doi.org/10.1093/jeb/voaf042","url":null,"abstract":"Mitochondrial RNA editing has evolved independently in numerous eukaryotic lineages, where it generally restores conserved sequences and functional reading frames in mRNA transcripts derived from altered or disrupted mitochondrial protein-coding genes. In contrast to this \"restorative\" RNA editing in mitochondria, most editing of nuclear mRNAs introduces novel sequence variants and diversifies the proteome. This Perspective addresses the hypothesis that these completely opposite effects of mitochondrial vs. nuclear RNA editing arise from the enormous difference in gene number between the respective genomes. Because mitochondria produce a much smaller transcriptome, they likely create less opportunity for off-target editing, which has been supported by recent experimental work expressing mitochondrial RNA editing machinery in foreign contexts. In addition, there is recent evidence that the size and complexity of RNA targets may slow the kinetics and reduce efficiency of on-target RNA editing. These findings suggest that efficient targeting and a low risk of off-target editing have facilitated the repeated emergence of disrupted mitochondrial genes and associated restorative RNA editing systems via (potentially non-adaptive) evolutionary pathways that are not feasible in larger nuclear transcriptomes due to lack of precision.","PeriodicalId":50198,"journal":{"name":"Journal of Evolutionary Biology","volume":" ","pages":""},"PeriodicalIF":2.1,"publicationDate":"2025-05-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144030028","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The ancestor of sharks and rays laid eggs, but ancestral state reconstructions need empirically supported traits and transparent reporting: a comment on Katona et al. (2023). 鲨鱼和鳐鱼的祖先产卵，但祖先状态重建需要经验支持的特征和透明的报告：对卡托纳等人（2023）的评论。

IF 2.1 3区生物学

Journal of Evolutionary Biology Pub Date : 2025-04-19 DOI: 10.1093/jeb/voaf020

Daniel F Hughes, Daniel G Blackburn

引用次数: 0

Correction to: The effects of parasitism on sex allocation of a hermaphroditic acorn barnacle. 更正：寄生对雌雄同体橡子藤壶性别分配的影响

IF 2.1 3区生物学

Journal of Evolutionary Biology Pub Date : 2025-04-19 DOI: 10.1093/jeb/voaf016

引用次数: 0

Altruism or selfishness: floral behaviour based on genetic relatedness with neighbouring plants. 利他主义或自私：基于与邻近植物遗传关系的花的行为。

IF 2.1 3区生物学

Journal of Evolutionary Biology Pub Date : 2025-04-19 DOI: 10.1093/jeb/voaf015

Haruto Tomizuka, Akira Yamawo, Yuuya Tachiki

引用次数: 0

The coevolution of parasite virulence and host investment in constitutive and induced defence. 寄生虫毒力的共同进化，以及宿主在本构防御和诱导防御中的投资。

IF 2.1 3区生物学

Journal of Evolutionary Biology Pub Date : 2025-04-19 DOI: 10.1093/jeb/voaf014

Alex Best, Sarah Guth, Mike Boots

{"title":"The coevolution of parasite virulence and host investment in constitutive and induced defence.","authors":"Alex Best, Sarah Guth, Mike Boots","doi":"10.1093/jeb/voaf014","DOIUrl":"10.1093/jeb/voaf014","url":null,"abstract":"Given their ubiquity in nature and their importance to human and agricultural health, it is important to gain a better understanding of the drivers of the evolution of infectious disease. Across vertebrates, invertebrates, and plants, defence mechanisms can be expressed either constitutively (always present and costly) or induced (activated and potentially costly only upon infection). Theory has shown that this distinction has important implications to the evolution of defence due to differences in their impact on both individual fitness and the feedback of the population-level epidemiological outcomes such as prevalence. However, despite the fact that pathogens evolve in response to host immunity and that this can have important implications to the evolution of host defence, the implications of coevolution on constitutive and induced immunity have not been examined. Here we show theoretically how and when incorporating host-parasite coevolution between host defences and parasite growth strategies plays an important role in determining the optimum outcome. A key result is that whether the parasite affects host reproduction critically impacts host-parasite coevolution; when the parasite impacts fecundity, selection on the host is largely geared towards minimizing reproductive costs, through reducing investment in reproductively costly constitutive defence when the parasite prevalence is low, but also by investing in immunity to avoid infection or recover when prevalence is high. Our work emphasizes the importance of coevolution and epidemiological feedbacks to the coevolution of hosts and parasites and provides testable predictions of the determinants of constitutive verses induced defence.","PeriodicalId":50198,"journal":{"name":"Journal of Evolutionary Biology","volume":" ","pages":"481-491"},"PeriodicalIF":2.1,"publicationDate":"2025-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143617717","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Winner-loser effects on life history traits. 输赢对生活史特征的影响。

IF 2.1 3区生物学

Journal of Evolutionary Biology Pub Date : 2025-04-19 DOI: 10.1093/jeb/voaf021

Lauren M Harrison, Oliver P Stuart, Michael D Jennions

{"title":"Winner-loser effects on life history traits.","authors":"Lauren M Harrison, Oliver P Stuart, Michael D Jennions","doi":"10.1093/jeb/voaf021","DOIUrl":"10.1093/jeb/voaf021","url":null,"abstract":"Ageing of adult males could be accelerated by both high mating/reproductive effort and fighting for mates. Testing the relative importance of these factors is challenging, however, because males that win fights also tend to have more mates. We used a 2 × 2 experimental design to test how a prolonged (9 week) period of either winning or losing fights, and either high or low reproductive effort (manipulating by varying access to females) interacts to affect male ageing and future reproduction allocation in the mosquitofish, Gambusia holbrooki. We measured telomere length and several life-history traits, including mating effort and ejaculates (sperm count and velocity). After 9 weeks, there were significant differences between winners and losers in their mating effort but not in their ejaculates. Males with a higher past reproductive effort (i.e., access to females) had significantly lower current mating effort and grew more slowly. Males with a higher past reproductive effort also had slower swimming sperm, but only if they were smaller than average in body size. Surprisingly, neither males with a higher past reproductive effort nor males that repeatedly lost fights had shorter telomeres. Our findings show that past social dynamics affect how males allocate resources to reproduction and somatic maintenance.","PeriodicalId":50198,"journal":{"name":"Journal of Evolutionary Biology","volume":" ","pages":"530-542"},"PeriodicalIF":2.1,"publicationDate":"2025-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143617719","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0