Journal of Evolutionary Biology最新文献

Evolution of divergent daily temporal niches shaped by male-male competition can generate sympatric speciation. 由雄性竞争形成的不同的日常时间生态位的进化可以产生同域物种形成。

IF 2.3 3区生物学

Journal of Evolutionary Biology Pub Date : 2026-05-08 DOI: 10.1093/jeb/voag030

Titouan Bouinier, Arthur Brunaud, Charline Smadi, Violaine Llaurens

{"title":"Evolution of divergent daily temporal niches shaped by male-male competition can generate sympatric speciation.","authors":"Titouan Bouinier, Arthur Brunaud, Charline Smadi, Violaine Llaurens","doi":"10.1093/jeb/voag030","DOIUrl":"https://doi.org/10.1093/jeb/voag030","url":null,"abstract":"Specialisation into different ecological niches is assumed as an important driver of speciation in sympatry. Here we focused on male-male competition fuelling population divergence, without assuming any ecological specialisation. We investigated how antagonistic interactions between males can promote divergent evolution of timings of reproductive activities during the day, as observed in some closely-related insect species living in sympatry. We used a multi-locus, comprehensive stochastic model to investigate the evolution of (1) the timing of reproductive activity as a quantitative trait and (2) neutral loci that may generate genetic incompatibilities among divergent individuals. We specifically explored how male-male competition for female access can generate negative frequency-dependence on the timing of reproductive activities and fuel population divergence. Our simulations in finite populations highlight the strong effect of male-male competition and operational sex-ratio on the evolution of divergent temporal niches. They also show how genetic incompatibilities promote the differentiation among populations with divergent temporal niches, but may also impair their co-existence. Our model therefore highlights male-male competition as an important factor shaping the evolution of diel niches, that may fuel sympatric speciation.","PeriodicalId":50198,"journal":{"name":"Journal of Evolutionary Biology","volume":" ","pages":""},"PeriodicalIF":2.3,"publicationDate":"2026-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147845523","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

Extending space-for-time substitutions: the missing role of the gut microbiome. 扩展空间替代时间：肠道微生物组的缺失作用。

IF 2.3 3区生物学

Journal of Evolutionary Biology Pub Date : 2026-05-08 DOI: 10.1093/jeb/voag032

Charlotte Theys, Ellen Decaestecker, Robby Stoks

{"title":"Extending space-for-time substitutions: the missing role of the gut microbiome.","authors":"Charlotte Theys, Ellen Decaestecker, Robby Stoks","doi":"10.1093/jeb/voag032","DOIUrl":"https://doi.org/10.1093/jeb/voag032","url":null,"abstract":"The space-for-time substitution (SFTS) approach is widely used to predict evolutionary trait responses to global warming. The current approach ignores the explicit role of the gut microbiome in shaping the future host phenotype, despite its strong influence on thermal adaptation and its ability to show more rapid adaptation than the host. We propose integrating reciprocal gut microbiome transplants into SFTS and identify a set of contrasts between treatment combinations to disentangle host and gut microbiome contributions to thermal adaptation under future warming. To illustrate our approach, we apply the proposed contrasts between treatment groups to re-interpret data on immune functioning of Ischnura elegans damselfly nymphs of which the gut microbiome was reciprocally transplanted between nymphs from warm-adapted low-latitude and cold-adapted high-latitude populations reared at both the cold (high-latitude) and warm (low-latitude) thermal regime. By disentangling the contributions of the host and its gut microbiome, our conceptual approach shows that gut microbiome adaptation can buffer against immune suppression in the high-latitude populations under future warming, while adaptation of the host will not. Incorporating the gut microbiome into SFTS may enhance realism in predicting species resilience to climate change and better inform conservation strategies under future climates.","PeriodicalId":50198,"journal":{"name":"Journal of Evolutionary Biology","volume":" ","pages":""},"PeriodicalIF":2.3,"publicationDate":"2026-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147845511","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

Independent origin of sperm heteromorphism in the Drosophilidae. 果蝇科精子异型性的独立起源。

IF 2.3 3区生物学

Journal of Evolutionary Biology Pub Date : 2026-05-07 DOI: 10.1093/jeb/voag031

Karan Bhatt, Zeeshan A Syed, R Antonio Gomez, Steve Dorus, Scott Pitnick

{"title":"Independent origin of sperm heteromorphism in the Drosophilidae.","authors":"Karan Bhatt, Zeeshan A Syed, R Antonio Gomez, Steve Dorus, Scott Pitnick","doi":"10.1093/jeb/voag031","DOIUrl":"https://doi.org/10.1093/jeb/voag031","url":null,"abstract":"Sperm heteromorphism, the production multiple discrete sperm types (or \"morphs\"), occurs in diverse animal and plant taxa. This phenomenon represents a division of labor by male gametes, with one morph participating in fertilization and the other morph(s) specialized to perform some other reproductive function. One of the most intensively investigated systems is the Drosophila obscura species group, for which sperm heteromorphism evolved once in the common ancestor to the group, with all examined descendent species exhibiting sperm length heteromorphism. The absence of additional sperm heteromorphism origins among drosophilids has precluded comparative evolutionary analyses. Here, we report the discovery of a second origin within the Drosophilidae, with Chymomyza procnemis exhibiting the most extreme sperm length heteromorphism known (>15-fold difference). Males produced and transferred to females approximately twice as many short sperm as long sperm. Shortly after insemination, females ejected from their reproductive tracts most of the short morph sperm, yet relatively few of the long morph sperm, resulting in a preponderance of long morph sperm occupying the females' sperm-storage organs. By the start of egg laying, few-to-no short morph sperm were detectable in females. Although C. procnemis have very long eusperm and the highest relative investment (Gonadosomatic Index; GSI) in testes for any drosophilid species, a comparative analysis of 149 Drosophila species revealed no significant coevolutionary relationship between sperm heteromorphism and either sperm length or GSI. Continued investigations with Chymomyza will advance our understanding of how sperm heteromorphism arises, persists, and diversifies across lineages.","PeriodicalId":50198,"journal":{"name":"Journal of Evolutionary Biology","volume":" ","pages":""},"PeriodicalIF":2.3,"publicationDate":"2026-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147845520","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

What about male quality? A model to predict male investment in a single female. 那么男性素质呢？一个预测雄性对单个雌性的投资的模型。

IF 2.3 3区生物学

Journal of Evolutionary Biology Pub Date : 2026-05-07 DOI: 10.1093/jeb/voag029

Aviad Heifetz, Yael Lubin, Jutta Schneider, Michal Segoli

{"title":"What about male quality? A model to predict male investment in a single female.","authors":"Aviad Heifetz, Yael Lubin, Jutta Schneider, Michal Segoli","doi":"10.1093/jeb/voag029","DOIUrl":"https://doi.org/10.1093/jeb/voag029","url":null,"abstract":"Monogyny-where a male invests all his reproductive effort in a single female-is a rare and poorly understood mating system. It contradicts conventional sex roles, in which males typically seek multiple mates while females may mate repeatedly. Previous theoretical work has shown that monogyny is most likely to evolve under male-biased sex ratios, as often occurs in species with extreme female-biased sexual size dimorphism (eSSD). While previous models mainly considered the species level, potential individual strategies have received little attention. Here we used a game theory approach, considering the interplay between male and female decisions, to address how variation in male quality (e.g., size or body condition) affects the payoff of a monogynous strategy. The model is based on the biology of widow spiders, where males exhibit extreme mating investment including prolonged courtship, mate guarding, genital damage and even self-sacrifice, but can be relevant to other species with eSSD. The results of the model confirm previous predictions and point to a novel, testable, and somewhat surprising prediction: unless females are extremely rare relative to males, and/or male survival prospects are very slim, the highest quality males would avoid extreme investment and rather set out to look for additional females to mate with. This is because high-quality males face a lower risk that the female will not use their sperm, and they are also likely to be accepted by subsequent (even already mated) females. Future studies could address this hypothesis experimentally by comparing the tendency of males of varying qualities to invest in a current mate under different demographic and ecological conditions.","PeriodicalId":50198,"journal":{"name":"Journal of Evolutionary Biology","volume":" ","pages":""},"PeriodicalIF":2.3,"publicationDate":"2026-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147845517","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

Coupling molecular evolution with macroevolutionary transitions in a pheromone system including the three amphibian orders. 包括两栖三目在内的信息素系统中分子进化与宏观进化过渡的耦合。

IF 2.3 3区生物学

Journal of Evolutionary Biology Pub Date : 2026-05-05 DOI: 10.1093/jeb/voag017

María Torres-Sánchez

{"title":"Coupling molecular evolution with macroevolutionary transitions in a pheromone system including the three amphibian orders.","authors":"María Torres-Sánchez","doi":"10.1093/jeb/voag017","DOIUrl":"10.1093/jeb/voag017","url":null,"abstract":"Chemical communication is a key mechanism for modulating social and reproductive behaviours. Among the most studied chemical signals are the sodefrin precursor-like factors (SPFs), a group of pheromones that enhances reproduction receptivity in salamanders and frogs. The origin of these pheromones is inferred to date back to the last common ancestor of amphibians. Despite being extensively investigated, the diversity and evolutionary history of the SPF gene family remain incomplete, as the third extant amphibian order, caecilians (order Gymnophiona), has been overlooked. Here, I revisited the molecular evolution of SPF pheromones in amphibians by including candidate SPF sequences from caecilian transcriptome data. To uncover gene duplication events, I inferred the orthology relationships of amphibian SPFs from 35 salamanders, five frogs, and eight caecilians. I performed phylogenetic comparative analyses to describe the evolution of pheromone delivery, linking transmission environment with SPF gene duplication events. SPFs comprised several orthologous groups, potentially revealing multiple ancestral gene duplications during the evolution of this gene family. Several candidate caecilian SPFs were clustered with two types of well-known SPFs (Alpha and Beta SPFs). Importantly, one of these types (Alpha SPFs) has previously been documented only in salamanders. The last common ancestor of amphibians could have delivered their pheromones in terrestrial environments, with derived aquatic courtships associated with SPF gene expansions in salamanders but not in caecilians. These findings highlighted the importance of including the often-neglected order of caecilians to study the evolution of pheromone systems and, more generally, amphibian biology.","PeriodicalId":50198,"journal":{"name":"Journal of Evolutionary Biology","volume":" ","pages":"641-650"},"PeriodicalIF":2.3,"publicationDate":"2026-05-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147460721","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

Evolution and consequences of paternal inheritance of plastid DNA in conifers. 针叶树质体DNA父本遗传的进化及其后果。

IF 2.3 3区生物学

Journal of Evolutionary Biology Pub Date : 2026-05-05 DOI: 10.1093/jeb/voag021

Tom J de Jong, Birgit Kersten, Avi Shmida

引用次数: 0

A career in pursuit of the origin of species: celebrating Roger Butlin's contributions to the advancement of knowledge and growth of our scientific community. 追求物种起源的事业：庆祝罗杰·布特林对知识进步和科学界发展的贡献。

IF 2.3 3区生物学

Journal of Evolutionary Biology Pub Date : 2026-05-05 DOI: 10.1093/jeb/voag016

Rui Faria, Jon Bridle, Isobel Eyres, Kerstin Johannesson, Jonna Kulmuni, Marina Rafajlović, Mark Ravinet, Isa Schön, Carole M Smadja, Rhonda R Snook, Tom Tregenza, Anja M Westram, Michael G Ritchie, Sean Stankowski

引用次数: 0

Ancestral Wolbachia lineages are likely donors of ribotoxin genes in Aedes aegypti. 沃尔巴克氏体的祖先谱系可能是埃及伊蚊核毒素基因的供体。

IF 2.3 3区生物学

Journal of Evolutionary Biology Pub Date : 2026-05-05 DOI: 10.1093/jeb/voag014

Walter J Lapadula, Rachel Cheang, Mabel L Taracena-Agarwal, Maximiliano Juri Ayub

{"title":"Ancestral Wolbachia lineages are likely donors of ribotoxin genes in Aedes aegypti.","authors":"Walter J Lapadula, Rachel Cheang, Mabel L Taracena-Agarwal, Maximiliano Juri Ayub","doi":"10.1093/jeb/voag014","DOIUrl":"10.1093/jeb/voag014","url":null,"abstract":"Ribosome-inactivating proteins (RIPs) are enzymes that irreversibly inhibit protein synthesis by depurinating a specific adenine residue in the ribosomal RNA. Although members of this gene family are widespread in plants and bacteria, their occurrence in metazoans is rare and restricted to a few insect lineages, including Culicinae mosquitoes. Previous studies suggested that these genes were acquired by mosquitoes via horizontal gene transfer (HGT) from bacteria, but the source lineage remained unidentified. Here, we report the discovery of RIP-encoding genes in two Wolbachia strains. Phylogenetic analyses confirmed the monophyletic relationship between Wolbachia and mosquito RIPs, implying Wolbachia as the donor of these genes. These results shed light on the evolutionary dynamics of RIPs and the dual role of Wolbachia as both a functional contributor and genetic donor. By bridging the gap between endosymbiont and host genomes, this work provides new evidence for HGT as a source of adaptive innovation in insects. The implications of these findings for the ongoing debate on HGT in metazoans are also discussed.","PeriodicalId":50198,"journal":{"name":"Journal of Evolutionary Biology","volume":" ","pages":"678-685"},"PeriodicalIF":2.3,"publicationDate":"2026-05-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147318759","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

Coastal and inland American alligators (Alligator mississippiensis) diverge along physiological axes in response to a salinity gradient. 沿海和内陆美洲短吻鳄（密西西比短吻鳄）沿着生理轴对盐度梯度的反应而分化。

IF 2.3 3区生物学

Journal of Evolutionary Biology Pub Date : 2026-05-05 DOI: 10.1093/jeb/voag015

John D Konvalina, Pedro F Quintana-Ascencio, Stanley E Trauth, Robert K Banks, Eric A Hoffman

{"title":"Coastal and inland American alligators (Alligator mississippiensis) diverge along physiological axes in response to a salinity gradient.","authors":"John D Konvalina, Pedro F Quintana-Ascencio, Stanley E Trauth, Robert K Banks, Eric A Hoffman","doi":"10.1093/jeb/voag015","DOIUrl":"10.1093/jeb/voag015","url":null,"abstract":"Ecotypes often occupy an environmental gradient, which can lead to divergence in physiological traits between ecotypes. We tested the hypothesis that alligators from inland and coastal environments have physiologically and genetically diverged from one another by exposing coastal and inland alligators to hypo-osmotic (0 PSU), iso-osmotic (10 PSU), and hyper-osmotic (20 PSU) salinities. For each alligator, we measured natremia before and after exposure, 1 behavioural trait, 10 histological traits, and gene expression levels in the liver and kidney. We found little evidence supporting population genetic differentiation between coastal and inland alligators, yet found significant physiological divergence between the 2 ecotypes. Coastal alligators exhibited slightly elevated natremia across salinity treatments both pre- and post-trial and there were large structural differences between the ecotypes in both the kidney and liver tissues. Broadly, the metabolic features of the liver were decreased and the osmoregulatory abilities of the kidney were increased to a greater extent in the coastal alligators than in the inland alligators, especially at high salinities. This was also reflected in the gene expression data, where most differentially expressed genes were involved in metabolic pathways. Together, these findings suggest that coastal alligators maintain sodium balance through a combination of increased renal processing capacity and a slightly elevated natremia set point. Overall, we found that the salinity gradient used in our study elicited contrasting physiological responses between alligators from coastal and inland environments.","PeriodicalId":50198,"journal":{"name":"Journal of Evolutionary Biology","volume":" ","pages":"621-640"},"PeriodicalIF":2.3,"publicationDate":"2026-05-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147391294","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

Ecological harshness has a weak influence on reproductive trade-offs in a great tit population. 在大山雀种群中，生态环境的严酷程度对繁殖权衡的影响较弱。

IF 2.3 3区生物学

Journal of Evolutionary Biology Pub Date : 2026-05-05 DOI: 10.1093/jeb/voag011

Louis Bliard, Jordan S Martin, Dylan Z Childs, Ella F Cole, Ben C Sheldon, Maria Paniw, Arpat Ozgul

{"title":"Ecological harshness has a weak influence on reproductive trade-offs in a great tit population.","authors":"Louis Bliard, Jordan S Martin, Dylan Z Childs, Ella F Cole, Ben C Sheldon, Maria Paniw, Arpat Ozgul","doi":"10.1093/jeb/voag011","DOIUrl":"10.1093/jeb/voag011","url":null,"abstract":"Lack's seminal work on bird clutch sizes has spurred expansive research on reproductive trade-offs, especially focusing on offspring quantity-quality trade-offs and the potential fitness consequences for the parents. The environment is a critical driver of the expression of individual reproductive traits, influencing them through plastic responses. However, the plasticity of reproductive trade-offs themselves across environments has seldom been studied, and these studies were often limited to experimental approaches and dichotomous environments. Using 58 years of detailed data from a great tit population, we employ the recently developed \"covariance reaction norm\" (CRN) model to explore how continuous environmental variation influences the shape of reproductive trade-offs among individuals. Our analysis reveals that the correlation potentially indicative of the offspring quantity-quality trade-off is predominantly stable across years, with minimal variation linked to ecological harshness during the breeding season. However, the CRN also demonstrated that, despite some uncertainty associated with the results, the correlation between offspring mass and future offspring recruitment was positive, but only under harsh environmental conditions, suggesting that producing larger offspring provides fitness benefits when breeding conditions are suboptimal, which may reflect the importance of size for early-life competition. Altogether, this work highlights that there is temporal variation in some of the phenotypic correlations. This is a consequence of variation in offspring investment across breeding seasons, which is mostly driven by environmental conditions. Our study shows the benefits of exploring old ecological questions in the light of new statistical methods, highlighting the importance of understanding how environmental variation shapes the expression of life history trade-offs and the evolution of plasticity in reproductive strategies.","PeriodicalId":50198,"journal":{"name":"Journal of Evolutionary Biology","volume":" ","pages":"602-614"},"PeriodicalIF":2.3,"publicationDate":"2026-05-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146229576","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