Journal of Evolutionary Biology最新文献_第2页

Identifying the proximate mechanisms that generate plasticity in fecundity for nutrition in Drosophila melanogaster. 确定黑腹果蝇营养繁殖可塑性产生的近似机制。

IF 2.3 3区生物学

Journal of Evolutionary Biology Pub Date : 2026-05-05 DOI: 10.1093/jeb/voag010

André N Alves, Avishikta Chakraborty, Mia Wansbrough, Greg M Walter, Matthew D W Piper, Carla M Sgrò, Christen K Mirth

{"title":"Identifying the proximate mechanisms that generate plasticity in fecundity for nutrition in Drosophila melanogaster.","authors":"André N Alves, Avishikta Chakraborty, Mia Wansbrough, Greg M Walter, Matthew D W Piper, Carla M Sgrò, Christen K Mirth","doi":"10.1093/jeb/voag010","DOIUrl":"10.1093/jeb/voag010","url":null,"abstract":"Nutrition is an important determinant of an animal's survival and fitness. Phenotypic plasticity allows a genotype to adjust life history traits to changes in its nutritional environment, and it varies among individuals. We used a Drosophila melanogaster isogenic panel to characterize variation in nutritional plasticity for fecundity by feeding flies diets differing in their yeast content and counting the number of eggs produced. We then identified lines with the highest and lowest plastic responses to diet and dissected the potential proximate mechanisms responsible for these differences in plasticity, including morphology, behaviour, and physiology. Our results suggest that genetic variation in plasticity is not due to differences in ovariole number, but due to both increased food intake, and higher efficiency at converting food into eggs. Our results show that, in this population of D. melanogaster, variation in behaviour and physiology, but not morphology, underlies differences in plasticity for fecundity. Further, they set the stage for future studies aiming to understand how the proximate mechanisms that generate genetic variation in plasticity contribute to a population's persistence when faced with environmental changes.","PeriodicalId":50198,"journal":{"name":"Journal of Evolutionary Biology","volume":" ","pages":"587-601"},"PeriodicalIF":2.3,"publicationDate":"2026-05-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146214750","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

Decomposing social interactions: a statistical method for estimating social impact and social responsiveness. 题目：“分解社会互动：估计社会影响和社会反应的统计方法”。

IF 2.3 3区生物学

Journal of Evolutionary Biology Pub Date : 2026-05-05 DOI: 10.1093/jeb/voag013

Rori E Wijnhorst, Corné de Groot, Yimen G Araya-Ajoy, Jonathan Wright, Niels J Dingemanse

{"title":"Decomposing social interactions: a statistical method for estimating social impact and social responsiveness.","authors":"Rori E Wijnhorst, Corné de Groot, Yimen G Araya-Ajoy, Jonathan Wright, Niels J Dingemanse","doi":"10.1093/jeb/voag013","DOIUrl":"10.1093/jeb/voag013","url":null,"abstract":"Social interactions mediate the phenotypic expression of fitness-relevant traits. The expression of such labile social traits includes three distinct components: an individual's mean trait value (direct effect), its social responsiveness, and its social impact (indirect effects). Traditional methods, such as variance-partitioning or trait-based models, usually only partition individual variation into direct and indirect effects. However, individual variation in social responsiveness and its covariation with direct effects and social impact will affect responses to selection. To date, no studies have explored the performance of models that allow the decomposition of responsiveness from impact. Here, we describe a model for studying variation in phenotypic expression caused by social interactions, and we use simulations to explore its performance under various experimental designs. Our analyses show that with adequate total sample sizes ($ge ! 3,200$), variance components are estimated accurately across all study designs. In contrast, covariance estimation would benefit most from including more unique individuals, followed by more unique social partners per individual, whereas repeated interactions with the same partners added the least improvement to the covariance estimation. We also found that failing to model individual variation in responsiveness, and neglecting measurement error, increases bias and imprecision in trait-based approaches. Hence, disregarding individual variation in responsiveness would ignore a key component of social behaviour, and hamper our ability to acquire unbiased estimates of indirect genetic or social effects.","PeriodicalId":50198,"journal":{"name":"Journal of Evolutionary Biology","volume":" ","pages":"664-677"},"PeriodicalIF":2.3,"publicationDate":"2026-05-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147345654","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

Temperature stress disrupts reciprocal adaptation in a microbial predator-prey system. 温度胁迫破坏了微生物捕食-猎物系统中的相互适应。

IF 2.3 3区生物学

Journal of Evolutionary Biology Pub Date : 2026-05-05 DOI: 10.1093/jeb/voag018

Karissa Plum, Rebecca A Zufall

{"title":"Temperature stress disrupts reciprocal adaptation in a microbial predator-prey system.","authors":"Karissa Plum, Rebecca A Zufall","doi":"10.1093/jeb/voag018","DOIUrl":"10.1093/jeb/voag018","url":null,"abstract":"Antagonist interactions, such as predator-prey interactions, are widespread in nature and drive both ecological and evolutionary outcomes. Coevolutionary outcomes of antagonistic interactions have been shown to be influenced by environmental conditions, yet the role of abiotic stress in modifying these outcomes remains insufficiently understood. Here we explored how the addition of temperature stress altered evolutionary trajectories of traits of both species in the Pseudomonas fluorescens-Tetrahymena pyriformis (bacteria-ciliate) predator prey system. We found that temperature stress impeded the evolution of traits important for antagonistic interactions in both species. Prey defense levels as well as predators' ability to eat prey were limited under temperature stress. We also found that the addition of temperature stress altered growth rate evolution in evolving populations of both species. Taken together, our results show that temperature stress not only alters the evolutionary trajectories of both predator and prey traits but also hinders their coevolution. These findings suggest that environmental stressors may weaken reciprocal coevolution which could have important consequences for the stability and persistence of ecological communities.","PeriodicalId":50198,"journal":{"name":"Journal of Evolutionary Biology","volume":" ","pages":"651-663"},"PeriodicalIF":2.3,"publicationDate":"2026-05-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147460734","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

Sexual selection on males predicts reduced mitochondrial genetic diversity across mammals. 雄性的性选择预示着哺乳动物线粒体遗传多样性的减少。

IF 2.3 3区生物学

Journal of Evolutionary Biology Pub Date : 2026-05-05 DOI: 10.1093/jeb/voag012

Eva de la Peña, Angelica Crottini, Gonçalo C Cardoso

{"title":"Sexual selection on males predicts reduced mitochondrial genetic diversity across mammals.","authors":"Eva de la Peña, Angelica Crottini, Gonçalo C Cardoso","doi":"10.1093/jeb/voag012","DOIUrl":"10.1093/jeb/voag012","url":null,"abstract":"Sexual selection on males is expected to reduce genetic diversity via paternal inheritance because increased variance in male reproductive success lowers the male effective population size. It is plausible that sexual selection on males also affects genetic diversity via maternal inheritance, e.g., due to demographic processes. However, associations between sexual selection and maternally inherited genetic diversity were never tested for. Here, taking advantage of the fact that mitochondria are maternally inherited, we compare the diversity of two widely studied mitochondrial genes across 262 species of non-flying terrestrial mammals, for which male-biased sexual dimorphism is a good indicator of the intensity of sexual selection on males. We found that species with stronger male-biased dimorphism have lower mitochondrial diversity, after controlling for confounding effects. A plausible explanation for this result is that sexual selection on males can reduce female effective population size, giving rise to the change of allelic diversity in these mitochondrial genes. Our result thus suggests broader associations of sexual selection with demography and population genetic structure than previously recognized.","PeriodicalId":50198,"journal":{"name":"Journal of Evolutionary Biology","volume":" ","pages":"615-620"},"PeriodicalIF":2.3,"publicationDate":"2026-05-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146259897","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

Clinging strength, but not sprint speed, underlies morphological divergence between ecologically distinct Liolaemus species. 在生态上截然不同的Liolaemus物种之间，附着强度，而不是冲刺速度，是形态差异的基础。

IF 2.3 3区生物学

Journal of Evolutionary Biology Pub Date : 2026-05-01 DOI: 10.1093/jeb/voag027

María J Tulli, Félix Cruz, Ken S Toyama

{"title":"Clinging strength, but not sprint speed, underlies morphological divergence between ecologically distinct Liolaemus species.","authors":"María J Tulli, Félix Cruz, Ken S Toyama","doi":"10.1093/jeb/voag027","DOIUrl":"https://doi.org/10.1093/jeb/voag027","url":null,"abstract":"Biomechanical theory suggests a strong link between an organism's physical structure and its ability to perform specific functions. Animals specialized for a particular type of movement, such as running or climbing, are expected to have different anatomical features. Importantly, these specializations often involve trade-offs, where an adaptation that benefits one type of movement may hinder another. Here, we used phylogenetic comparative methods to study the relationships between habitat use, external and muscular morphology, and experimentally-obtained performance metrics among a set of Liolaemus species, and tested for performance-based morphological trade-offs between habitat specialists. We found that terrestrial and scansorial species display distinct multivariate phenotypes. Specifically, scansorial species exhibit relatively longer forelimbs, but relatively smaller hindlimb muscles when compared to terrestrial ones. Moreover, morphological proportions associated with scansoriality were found to enhance clinging strength, suggesting that the characteristic morphology exhibited by scansorial species might have evolved due to its positive effect on climbing performance. On the contrary, sprinting performance was not enhanced by morphological proportions associated with terrestriality. In fact, sprint speed was not significantly correlated with morphology, given the traits considered in our study. Overall, our results do not support the existence of a performance-related morphological trade-off between scansorial and terrestrial species in Liolaemus. Instead, they demonstrate how particular ecologies can have a strong impact on morphological evolution even in groups with otherwise conserved body plans.","PeriodicalId":50198,"journal":{"name":"Journal of Evolutionary Biology","volume":" ","pages":""},"PeriodicalIF":2.3,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147822972","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

Predation and the Evolution of Island Bird Plumage Colouration: Experimental Insights from Island and Mainland Environments. 捕食和岛屿鸟类羽毛颜色的进化：来自岛屿和大陆环境的实验见解。

IF 2.3 3区生物学

Journal of Evolutionary Biology Pub Date : 2026-04-20 DOI: 10.1093/jeb/voag026

Ana V Leitão, Cristina D Alonso Moya, Ricardo J Lopes, Raquel Ponti, Rita Covas, Claire Doutrelant

{"title":"Predation and the Evolution of Island Bird Plumage Colouration: Experimental Insights from Island and Mainland Environments.","authors":"Ana V Leitão, Cristina D Alonso Moya, Ricardo J Lopes, Raquel Ponti, Rita Covas, Claire Doutrelant","doi":"10.1093/jeb/voag026","DOIUrl":"10.1093/jeb/voag026","url":null,"abstract":"Islands serve as natural laboratories for exploring evolutionary processes, often fostering unique species through isolation and distinct ecological conditions. Bird plumage colouration frequently differs in island populations, with island species typically exhibiting reduced plumage colouration relative to mainland relatives. Predation may influence plumage conspicuousness, and this is particularly interesting on islands, where predator diversity is generally lower, yet no experiments have directly compared predation pressure between island and mainland systems. Consequently, empirical evidence linking predation pressure to variation in conspicuousness across ecological contexts remains limited. We investigated how predation pressure differs between insular and mainland habitats, and whether predation risk covaries with conspicuousness of male and female birds. In a field experiment, we used 3D-printed models representing both sexes of 12 bird species from three archipelagos (Madeira, Azores, and Canary Islands) and their closest mainland relatives. Models were deployed in the species' natural environments to measure hit rates (a proxy for predation risk), accounting for model colours, background contrast, and vegetation. We found that models experienced fewer hits on islands than on the mainland. On mainland, dichromatic models were more likely to be dislodged, and higher chromatic contrast increased this likelihood. In contrast, predation risk on islands showed no relationship with colour conspicuousness. These results suggest that predation constrains conspicuousness on mainland but does not explain the reduced colouration observed in island birds, highlighting that other ecological and evolutionary factors drive this pattern. Our research offers experimental insights into how predation interacts with conspicuousness to shape plumage colouration in birds.","PeriodicalId":50198,"journal":{"name":"Journal of Evolutionary Biology","volume":" ","pages":""},"PeriodicalIF":2.3,"publicationDate":"2026-04-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147724332","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

Non-genetic inheritance of induced defense morphologies across multiple unexposed generations of Daphnia lumholtzi. 水蚤非暴露多代诱导防御形态的非遗传。

IF 2.3 3区生物学

Journal of Evolutionary Biology Pub Date : 2026-04-11 DOI: 10.1093/jeb/voag024

Shannon N Snyder, Walker C Meyer, Shanie L Jorgenson, Ethan B Contreras, Tea Bland, William A Cresko

{"title":"Non-genetic inheritance of induced defense morphologies across multiple unexposed generations of Daphnia lumholtzi.","authors":"Shannon N Snyder, Walker C Meyer, Shanie L Jorgenson, Ethan B Contreras, Tea Bland, William A Cresko","doi":"10.1093/jeb/voag024","DOIUrl":"https://doi.org/10.1093/jeb/voag024","url":null,"abstract":"Environmental variation can induce phenotypic changes through adaptation of populations and acclimation of individuals. While genetic adaptation creates persistent change within a population via allele frequency shifts, reversible plastic phenotypes can be inherited through non-genetic mechanisms, independent of DNA sequence change. Most transgenerational plasticity studies in animals examine generations where embryonic or germline exposure to environmental cues cannot be definitively excluded. Empirical evidence for persistence definitively beyond this critical threshold in animals remains scarce, particularly for morphological defenses induced by vertebrate predators. We measured phenotypic effects of vertebrate predator exposure in the clonally reproducing water flea, Daphnia lumholtzi, isolating environmental effects from genetic variation. We exposed the G0 generation to fish conditioned media, then measured morphological defenses in definitively unexposed G3, G4, and G5 generations, characterizing the temporal dynamics of non-genetic inheritance. Predator-induced morphologies persisted through G4 before receding in G5, demonstrating that non-genetic effects extend well beyond the embryonically exposed G1 and germ cell exposed G2 generations. This provides rare empirical evidence for transgenerational plasticity lasting through G4, without confounding genetic variation. We also examined ontogenetic patterns of somatic and defensive trait development, revealing trait-specific temporal dynamics in transgenerational effect expression and decay. These results highlight how current and ancestral environments interact to determine phenotypic variation across generations and underscore the ecological significance of non-genetic inheritance in natural populations, particularly for understanding population responses to environmental change and predator reintroduction.","PeriodicalId":50198,"journal":{"name":"Journal of Evolutionary Biology","volume":" ","pages":""},"PeriodicalIF":2.3,"publicationDate":"2026-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147678295","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

Chromosomal Rearrangements: Tempo and Mode of Karyotype Evolution in Scarabaeoidea. 染色体重排：金龟子总科核型进化的速度和模式。

IF 2.3 3区生物学

Journal of Evolutionary Biology Pub Date : 2026-04-09 DOI: 10.1093/jeb/voag025

Sean Chien, Heath Blackmon

{"title":"Chromosomal Rearrangements: Tempo and Mode of Karyotype Evolution in Scarabaeoidea.","authors":"Sean Chien, Heath Blackmon","doi":"10.1093/jeb/voag025","DOIUrl":"https://doi.org/10.1093/jeb/voag025","url":null,"abstract":"Karyotype evolution, including changes in chromosome number and structure, is a fundamental process that can influence genome organization and speciation. Here, we analyze patterns of chromosome number evolution and sex chromosome-autosome (SA) fusions across Scarabaeoidea, a diverse beetle superfamily with broad variation in karyotypes and sex chromosome systems. We compiled 478 karyotype records and constructed a phylogeny for 211 species to estimate rates of chromosome number change, modeled as fission and fusion events, in Scarabaeidae, Lucanidae, and Passalidae. Passalidae show markedly higher rates of both fission and fusion along with consistently higher chromosome numbers. This pattern is consistent with genetic drift facilitating the fixation of rearrangements in lineages with low dispersal and small effective population sizes. We also tested whether SA-fusions occur more often than expected by chance, where the null expectation assumes all chromosomes are equally likely to undergo fusion. The observed proportion of SA-fusions was more than double the null expectation, with non-overlapping credible intervals. This pattern is consistent with a prediction of models where sex chromosome fusions are indirectly favored by sexually antagonistic selection. We also found that neo-XY systems are consistently associated with lower autosome numbers, consistent with repeated SA-fusions. Together, these results show that Scarabaeoidea exhibit dynamic karyotype evolution and provide comparative support for core predictions of the canonical model of sex chromosome evolution.","PeriodicalId":50198,"journal":{"name":"Journal of Evolutionary Biology","volume":" ","pages":""},"PeriodicalIF":2.3,"publicationDate":"2026-04-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147678299","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

Burrowing Behavior and Species Recognition Predict Color Pattern Evolution in Freshwater Crayfishes. 淡水小龙虾的挖洞行为和物种识别预测颜色模式的进化。

IF 2.3 3区生物学

Journal of Evolutionary Biology Pub Date : 2026-04-05 DOI: 10.1093/jeb/voag028

Zackary A Graham

{"title":"Burrowing Behavior and Species Recognition Predict Color Pattern Evolution in Freshwater Crayfishes.","authors":"Zackary A Graham","doi":"10.1093/jeb/voag028","DOIUrl":"https://doi.org/10.1093/jeb/voag028","url":null,"abstract":"Color patterns are the spatial arrangements of contrasting colors on an organism's body and can have several non-mutually exclusive functions, including crypsis, species recognition, or as a warning display. Here, I test how color patterns correspond to ecological and morphological factors across 393 freshwater crayfish species. Using a time-calibrated phylogeny and phylogenetic logistic regression, I examined whether body size, congeneric sympatry, or burrowing behavior predict the presence of color patterning. The best-supported model included additive effects of burrowing ecology and congeneric sympatry, but not body size. Patterned coloration was 7.3 times more likely in aquatic species compared to semi-terrestrial species, consistent with the hypothesis that increased exposure to visually oriented predators correlates to the presence of cryptic color patterns. Patterning also increased with the number of sympatric congeners, suggesting a role in species recognition. The best fit model exhibited weak phylogenetic signal, indicating that the relationship between patterning and the ecological predictors were not strongly influenced by shared ancestry. Together, these results suggest that predation pressure and social interactions jointly drive the diversification of color patterns in crayfishes.","PeriodicalId":50198,"journal":{"name":"Journal of Evolutionary Biology","volume":" ","pages":""},"PeriodicalIF":2.3,"publicationDate":"2026-04-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147822968","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

Hidden in Plain Sight: A Novel Symbiotic Haplosclerid Sponge Species Revealed by its Mitochondrial Genome. 隐藏在视线之中：一种新的共生单体海绵物种的线粒体基因组揭示。

IF 2.3 3区生物学

Journal of Evolutionary Biology Pub Date : 2026-04-02 DOI: 10.1093/jeb/voag023

Momin Ahmed Khaki, Jan Vicente, Russell T Hill, Dennis V Lavrov

{"title":"Hidden in Plain Sight: A Novel Symbiotic Haplosclerid Sponge Species Revealed by its Mitochondrial Genome.","authors":"Momin Ahmed Khaki, Jan Vicente, Russell T Hill, Dennis V Lavrov","doi":"10.1093/jeb/voag023","DOIUrl":"https://doi.org/10.1093/jeb/voag023","url":null,"abstract":"Sponges (phylum Porifera) are known to form symbiotic relationships with a variety of organisms, including other sponges. Recently, such symbiosis has been described between two homoscleromorph species (Plakortis symbiotica and P. deweerdtaephila) and two representatives of the demosponge order Haplosclerida (Xestospongia deweerdtae and Haliclona plakophila). While studying genomic data from the H. plakophila - P. symbiotica association, we discovered an unusual third mitochondrial genome (mitogenome). Additional sampling conducted for this study revealed that this genome belongs to a new species of Haplosclerida, which we name Metilla boricua gen. nov., sp. nov. Here we describe this new species along with its mitogenome. While M. boricua is superficially similar to H. plakophila, it can be distinguished from it both by skeletal organization and spicule composition. Its mitogenome is also highly unusual, featuring an elevated GC content and missing the cox2 gene. Phylogenetic analyses based on nuclear 18S and 28S gene sequences place M. boricua into a poorly sampled clade F within the order Haplosclerida. We also report the mitogenome of symbiotic haplosclerid X. deweerdtae, which we sequenced before the new species was identified. Our results support three independent origins of Haplosclerida-Plakortis symbiosis, a finding that redefines the context for future investigation of these relationships.","PeriodicalId":50198,"journal":{"name":"Journal of Evolutionary Biology","volume":" ","pages":""},"PeriodicalIF":2.3,"publicationDate":"2026-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147595973","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