Proceedings. Biological sciences最新文献_第9页

Conflicting identities and cooperation between groups: experimental evidence from a mentoring programme. 群体之间的身份冲突与合作：来自指导项目的实验证据。

IF 3.5

Proceedings. Biological sciences Pub Date : 2025-08-01 Epub Date: 2025-08-06 DOI: 10.1098/rspb.2025.1363

Antonio M Espín, Maria Paz Espinosa, Maria J Vázquez-De Francisco, Pablo Brañas-Garza

{"title":"Conflicting identities and cooperation between groups: experimental evidence from a mentoring programme.","authors":"Antonio M Espín, Maria Paz Espinosa, Maria J Vázquez-De Francisco, Pablo Brañas-Garza","doi":"10.1098/rspb.2025.1363","DOIUrl":"10.1098/rspb.2025.1363","url":null,"abstract":"Well-functioning human societies require the integration of vulnerable minorities, yet leading scientific theories conflict on how easily diverse groups cooperate. We experimentally investigate cooperation in 14 centres of a mentoring programme where participants have two possible natural identities-individuals raised under legal guardianship, suffering a negative stereotype (G; n = 112) and users without such a social stigma (NG; n = 82). Participants played a prisoners' dilemma game with an anonymous partner from the same centre (centre-ingroup) and from another centre (centre-outgroup). For individuals without a history within-centre interaction, we find centre-outgroup favouritism among G and centre-ingroup favouritism among NG. However, the longer G individuals have been in the centre the more centre-ingroup favouritism they display, while the opposite is true for NG. Regardless of within-centre history, both G and NG individuals cooperate less with the centre-ingroup (versus outgroup) as the probability that the centre-ingroup is G increases. Thus, we observe patterns of centre-outgroup and natural-outgroup favouritism among G which challenge theoretical frameworks exclusively focusing on ingroup favouritism. Our findings highlight the roles of system-justification and stereotypes in intergroup cooperation and have implications for the integration of vulnerable groups and the optimization of social policy programmes.","PeriodicalId":520757,"journal":{"name":"Proceedings. Biological sciences","volume":"292 2052","pages":"20251363"},"PeriodicalIF":3.5,"publicationDate":"2025-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12324881/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144791744","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Climate warming drives pulsed resources and disease outbreak risk. 气候变暖导致资源枯竭和疾病爆发风险。

IF 3.5

Proceedings. Biological sciences Pub Date : 2025-08-01 Epub Date: 2025-08-13 DOI: 10.1098/rspb.2025.1340

Rémi Fay, Marlène Gamelon, Thibaud Porphyre

{"title":"Climate warming drives pulsed resources and disease outbreak risk.","authors":"Rémi Fay, Marlène Gamelon, Thibaud Porphyre","doi":"10.1098/rspb.2025.1340","DOIUrl":"10.1098/rspb.2025.1340","url":null,"abstract":"Climate influences the risk of disease transmission and spread through its direct effects on the survival and reproduction of hosts and pathogens. However, the indirect influences of climate variation (i.e. those mediated by food resources on host demography) are often neglected. Pulsed resources produced by oak trees in temperate forests constitute important resources for seed consumers and strongly depend on temperature. Using an individual-based model, we provide a theoretical exploration of the influence of climate warming on the dynamics of the African swine fever (ASF) in the seed consumer wild boar (Sus scrofa), considering both direct and indirect temperature effects. We show that climate warming directly decreases the persistence of the virus in the environment, but also increases the production of acorns, with cascading effects on the seed consumer host species. Integrating these climatic effects suggests a decrease of ASF spread under future warmer conditions. Importantly, food-mediated indirect effects of climate may outweigh direct effects, reversing, in some situations, the predictions of epidemic dynamics under climate change. This shows that anticipating future epidemic risks requires a deep understanding of ecological systems, including all direct and indirect climatic effects.","PeriodicalId":520757,"journal":{"name":"Proceedings. Biological sciences","volume":"292 2052","pages":"20251340"},"PeriodicalIF":3.5,"publicationDate":"2025-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12343137/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144839873","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Changes in metazoan functional diversity across the Cambrian Radiation and the first Phanerozoic mass extinction: the Cambrian Sinsk Event. 寒武纪辐射中后生动物功能多样性的变化与第一次显生宙大灭绝：寒武纪Sinsk事件。

IF 3.5

Proceedings. Biological sciences Pub Date : 2025-08-01 Epub Date: 2025-08-20 DOI: 10.1098/rspb.2025.0968

Adam Murphy, Amelia Penny, Andrey Zhuravlev, Rachel Wood

{"title":"Changes in metazoan functional diversity across the Cambrian Radiation and the first Phanerozoic mass extinction: the Cambrian Sinsk Event.","authors":"Adam Murphy, Amelia Penny, Andrey Zhuravlev, Rachel Wood","doi":"10.1098/rspb.2025.0968","DOIUrl":"10.1098/rspb.2025.0968","url":null,"abstract":"The Sinsk Event (approx. 513.5 million years ago, Ma) is the first Phanerozoic mass extinction, marking the end of the canonical Cambrian Radiation. We reconstruct taxonomic and functional diversity patterns of skeletal metazoans from the Siberian Platform during the Cambrian Radiation and across the Sinsk Event from approximately 529 Ma to 508 Ma, to investigate the changing occupation of functional space and the evolution of functional traits during the radiation, and the role of these in extinction selectivity at the Sinsk extinction and subsequent recovery. During the radiation, functional richness increased before taxonomic richness as new groups with novel traits emerged and diversified. Taxonomic richness declined sharply at the Sinsk, but thereafter increased rapidly while functional richness continued to decline until approx. 508 Ma, indicating a post-extinction decoupling. While there is limited evidence of extinction selectivity at the Sinsk, certain functional traits are associated with post-extinction recovery from approximately 511 Ma to 508 Ma. Groups with novel functional traits associated with motility, diversified feeding modes and broad water depth tolerances diversified rapidly, while sessile, inshore filtrators and heavily calcified taxa which had been dominant prior to the extinction either failed to recover or became extinct. The Sinsk Event therefore marks a significant transition in marine ecosystem function.","PeriodicalId":520757,"journal":{"name":"Proceedings. Biological sciences","volume":"292 2053","pages":"20250968"},"PeriodicalIF":3.5,"publicationDate":"2025-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12364573/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144885023","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Recreational honey-hunting with honeyguides in the Kingdom of Eswatini. 在斯瓦蒂尼王国与蜜䴕一起休闲采蜜。

IF 3.5

Proceedings. Biological sciences Pub Date : 2025-08-01 Epub Date: 2025-08-13 DOI: 10.1098/rspb.2025.0255

Sanele O Nhlabatsi, Gcina S Dlamini, Celiwe A Ngcamphalala, Jessica E M van der Wal

{"title":"Recreational honey-hunting with honeyguides in the Kingdom of Eswatini.","authors":"Sanele O Nhlabatsi, Gcina S Dlamini, Celiwe A Ngcamphalala, Jessica E M van der Wal","doi":"10.1098/rspb.2025.0255","DOIUrl":"10.1098/rspb.2025.0255","url":null,"abstract":"In parts of Africa, people and greater honeyguide birds (Indicator indicator) cooperate to access bees' nests, from which humans harvest honey and honeyguides consume wax. We present the first study of human-honeyguide cooperation in the Kingdom of Eswatini, based on interviews with 83 honey-hunters and beekeepers, and observations of a honey-hunt. We investigated the current extent of honey-hunting with honeyguides, the associated cultural traditions, and the continuity of the practice. We found that honey-hunting with honeyguides is common in Eswatini, primarily as a recreational activity among young boys who herd cattle. Honey-hunters use various acoustic signals to communicate with honeyguides, such as an axe striking wood, verbal praises and whistles-including on hollowed fruit and plastic objects. They reward honeyguides with beeswax, brood and/or honey, fearing future encounters with dangerous animals if they do not. Skills are passed down by elders and spread among young cattle-herders through peer learning. Despite many honey-hunters reporting a decline due to increased education and job opportunities, and habitat loss, the practice is expected to continue. The largely recreational nature of honey-hunting with honeyguides in Eswatini suggests that this interspecies relationship can endure without economic incentives for humans, sustained instead by its cultural and social importance.-Please see AfricanHoneyguides.com/abstract-translations for a SiSwati translation of the abstract.","PeriodicalId":520757,"journal":{"name":"Proceedings. Biological sciences","volume":"292 2052","pages":"20250255"},"PeriodicalIF":3.5,"publicationDate":"2025-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12343124/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144839879","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Mental representation of the locations and identities of multiple hidden agents or objects by a bonobo. 倭黑猩猩对多个隐藏的代理或对象的位置和身份的心理表征。

IF 3.5

Proceedings. Biological sciences Pub Date : 2025-08-01 Epub Date: 2025-08-20 DOI: 10.1098/rspb.2025.0640

Luz Carvajal, Christopher Krupenye

{"title":"Mental representation of the locations and identities of multiple hidden agents or objects by a bonobo.","authors":"Luz Carvajal, Christopher Krupenye","doi":"10.1098/rspb.2025.0640","DOIUrl":"10.1098/rspb.2025.0640","url":null,"abstract":"Humans are adept at navigating the social world in part because we flexibly map the locations and identities of agents around us. While field studies suggest primates can track individual conspecifics, controlled experiments are needed to determine the complexity of this capacity and isolate the underlying representations. Across five object-choice tasks, we show that our closest relative, a bonobo (Kanzi), can concurrently track the locations and identities of multiple (specifically, two) hidden agents (Experiment 1), that this capacity deploys mental representations rather than tracking agents' last observed locations (Experiment 2), and that these representations can integrate visual or auditory signatures of identity (Experiment 3). Finally, we show that this bonobo performs similarly on an analogous multiple-object tracking invisible displacement task (Experiments 4-5), consistent with multiple agent- and object-tracking potentially recruiting common representational machinery. This work uncovers the rich representations of the social world that are shared by humans and other apes.","PeriodicalId":520757,"journal":{"name":"Proceedings. Biological sciences","volume":"292 2053","pages":"20250640"},"PeriodicalIF":3.5,"publicationDate":"2025-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12364578/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144885029","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Drivers of nocturnal and diurnal pollinating insect declines in urban landscapes. 城市景观夜间和日间传粉昆虫减少的驱动因素。

IF 3.5

Proceedings. Biological sciences Pub Date : 2025-08-01 Epub Date: 2025-08-06 DOI: 10.1098/rspb.2025.0102

Emilie E Ellis, Stuart A Campbell, Jill L Edmondson

{"title":"Drivers of nocturnal and diurnal pollinating insect declines in urban landscapes.","authors":"Emilie E Ellis, Stuart A Campbell, Jill L Edmondson","doi":"10.1098/rspb.2025.0102","DOIUrl":"10.1098/rspb.2025.0102","url":null,"abstract":"Insect pollinators are essential for terrestrial ecosystems, delivering key ecosystem functions in the face of anthropogenic disturbance. Urbanization may be a key threat to pollinator communities. However, the scale of the threat remains unknown due to an overwhelming research emphasis on bees and a lack of comparative studies on hyper-diverse pollinating taxa such as nocturnal moths. As a result, it remains unclear which pollinator groups are most vulnerable to urbanization, and which habitat features are most critical for supporting them. We conducted a large-scale assessment of the effects of increasing urbanization on the diversity of bees, hoverflies and nocturnal moths in urban horticultural sites (allotments) across three cities. We report up to a 43% reduction in species richness along urbanization gradients, suggesting that a wide range of pollinators are under threat in urban landscapes. We show that these declines are driven by taxon-specific landscape drivers such as the reduction of tree canopy and semi-natural habitat, suggesting that urban insect conservation depends on the preservation or expansion of habitat features specific to different threatened taxa. We found that relative to bees, moths and hoverflies are particularly sensitive to urbanization, and we highlight the importance of including these frequently overlooked pollinator groups when assessing the biodiversity impacts of environmental change.","PeriodicalId":520757,"journal":{"name":"Proceedings. Biological sciences","volume":"292 2052","pages":"20250102"},"PeriodicalIF":3.5,"publicationDate":"2025-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12324870/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144791746","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Evolutionary diversity of muscle OXPHOS efficiency in vitro across ectothermic vertebrates. 体外变温脊椎动物肌肉氧化磷效率的进化多样性。

IF 3.5

Proceedings. Biological sciences Pub Date : 2025-08-01 Epub Date: 2025-08-27 DOI: 10.1098/rspb.2025.0374

Rachel Lockridge Mueller, Lance C Li Puma, Michael W Itgen, Adam J Chicco

{"title":"Evolutionary diversity of muscle OXPHOS efficiency in vitro across ectothermic vertebrates.","authors":"Rachel Lockridge Mueller, Lance C Li Puma, Michael W Itgen, Adam J Chicco","doi":"10.1098/rspb.2025.0374","DOIUrl":"https://doi.org/10.1098/rspb.2025.0374","url":null,"abstract":"Oxidative metabolism meets the majority of vertebrate energy demands through the coupling of mitochondrial respiration to ATP production (OXPHOS). In endotherms, variations in OXPHOS coupling efficiency influence metabolic thermogenesis, locomotor economy and reactive oxygen species (ROS) generation. However, the extent of these variations and their functional implications in ectotherms are less clear. We measured mitochondrial oxygen consumption, ATP production and ROS production in permeabilized skeletal muscle fibres from salamanders, frogs and lizards representing ectotherm clades with low, medium and high standard metabolic rates (SMRs), respectively. Consistent with predicted associations with SMR, lizards had the highest capacities for muscle mitochondrial ATP production, while salamanders had the lowest. Unexpectedly, corresponding rates of oxygen consumption followed an opposite trend, reflecting 8.5-fold variations in OXPHOS coupling efficiency between salamanders (the lowest) and lizards (the highest). Intrinsic proton permeability of the inner mitochondrial membrane was the primary source of OXPHOS coupling variation across species, being highest in salamanders and lowest in lizards. Basal proton leak mediated by uncoupling proteins and the adenine nucleotide translocase was only seen in lizards, where it limits mitochondrial ROS production. We infer that diverse evolutionary selection pressures drive unexpectedly wide variations in muscle OXPHOS efficiency with different functional implications across ectotherm clades.","PeriodicalId":520757,"journal":{"name":"Proceedings. Biological sciences","volume":"292 2053","pages":"20250374"},"PeriodicalIF":3.5,"publicationDate":"2025-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12380484/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144986925","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Impacts of biodiversity-dependent ecosystem service debts on the safe operating space of social-ecological systems: a theoretical modelling study. 依赖生物多样性的生态系统服务债务对社会生态系统安全运行空间的影响：一个理论模型研究。

IF 3.5

Proceedings. Biological sciences Pub Date : 2025-08-01 Epub Date: 2025-08-27 DOI: 10.1098/rspb.2025.1744

Maarten B Eppinga, Nathalia Pérez-Cárdenas, Martin O Reader, Dominic A Martin, Maria J Santos

{"title":"Impacts of biodiversity-dependent ecosystem service debts on the safe operating space of social-ecological systems: a theoretical modelling study.","authors":"Maarten B Eppinga, Nathalia Pérez-Cárdenas, Martin O Reader, Dominic A Martin, Maria J Santos","doi":"10.1098/rspb.2025.1744","DOIUrl":"https://doi.org/10.1098/rspb.2025.1744","url":null,"abstract":"The rapid environmental changes of the Anthropocene create legacy effects that may shape future Earth system responses. One significant legacy effect is the species extinction debt caused by past habitat destruction. As biodiversity underpins ecosystem services vital to human societies, social-ecological systems may, in turn, be subjected to biodiversity-dependent ecosystem service debts. While biodiversity-dependent ecosystem service debts have been quantified with analytical approaches, less attention has been paid to their potential impact on social-ecological system trajectories. We performed a theoretical study of a dynamical systems model that includes the possibility of biodiversity-dependent ecosystem service debts emerging from past habitat destruction. Our results suggest that these debts reduce systems' safe operating spaces and create environmental tipping points associated with critical transitions in system states. These transitions, however, may include long transients of apparent stability, making it difficult to identify cause and effect. Notably, biodiversity-dependent ecosystem service debts may drive initial phases of apparent recovery after disturbance, still followed by system collapse. Our theoretical findings highlight the need to consider biodiversity-dependent ecosystem service debts for sustainable management of social-ecological systems. Furthermore, these results suggest that social-ecological systems' safe operating spaces cannot be reliably inferred from recent observations of apparent system stability.","PeriodicalId":520757,"journal":{"name":"Proceedings. Biological sciences","volume":"292 2053","pages":"20251744"},"PeriodicalIF":3.5,"publicationDate":"2025-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12380482/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144986960","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Novel stressors and trait variation determine X-linked meiotic drive frequency. 新的应激源和性状变异决定了x连锁减数分裂驱动频率。

IF 3.5

Proceedings. Biological sciences Pub Date : 2025-08-01 Epub Date: 2025-08-13 DOI: 10.1098/rspb.2025.0426

Adam M Fisher, Nicola White, Michael B Bonsall, Tom Ar Price, Robert J Knell

{"title":"Novel stressors and trait variation determine X-linked meiotic drive frequency.","authors":"Adam M Fisher, Nicola White, Michael B Bonsall, Tom Ar Price, Robert J Knell","doi":"10.1098/rspb.2025.0426","DOIUrl":"10.1098/rspb.2025.0426","url":null,"abstract":"Sex ratio meiotic drive alleles bias their transmission by impairing the viability of non-drive gametes, leading to skewed population sex ratios. Despite theoretical predictions that drive alleles should reach fixation causing population extinction, meiotic drive persists at intermediate frequencies in wild populations, though the reasons for this are unclear. Here, we investigate how novel environmental stress and genotype-specific fitness costs contribute to drive frequency. Using a suppression-free X-linked meiotic drive system in Drosophila pseudoobscura, we exposed flies to varying doses of the pesticide permethrin and measured mortality and fecundity across genotypes. We found that drive-bearing males (SR) and drive-homozygous females (SRSR) exhibited heightened mortality, both in the presence and absence of pesticide, while heterozygous (SRST) females exhibited superior fecundity. Using a mathematical model parametrized with our empirical findings, we explored the long-term population dynamics of meiotic drive under different conditions. Our model predicts that drive frequency has a concave relationship with pesticide dose and is strongly modulated by genotype-specific female fecundity. These results suggest that novel environmental stressors and drive-induced fitness effects play key roles in determining meiotic drive frequencies. Our findings improve our understanding of drive frequencies in the wild and have direct implications for drive-based pest control.","PeriodicalId":520757,"journal":{"name":"Proceedings. Biological sciences","volume":"292 2052","pages":"20250426"},"PeriodicalIF":3.5,"publicationDate":"2025-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12343126/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144839877","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Variation in self-compatibility among genotypes and across ontogeny in a self-fertilizing vertebrate, Kryptolebias marmoratus. 一种自交受精脊椎动物的基因型和个体发育间的自交亲和变异。

IF 3.5

Proceedings. Biological sciences Pub Date : 2025-08-01 Epub Date: 2025-08-13 DOI: 10.1098/rspb.2025.0919

Jennifer D Gresham, Anna Clark, Chloe M T Keck, Alexis E Longmire, Abye E Nelson, Haylee Quertermous, Ashley B White, Ryan Earley

{"title":"Variation in self-compatibility among genotypes and across ontogeny in a self-fertilizing vertebrate, Kryptolebias marmoratus.","authors":"Jennifer D Gresham, Anna Clark, Chloe M T Keck, Alexis E Longmire, Abye E Nelson, Haylee Quertermous, Ashley B White, Ryan Earley","doi":"10.1098/rspb.2025.0919","DOIUrl":"10.1098/rspb.2025.0919","url":null,"abstract":"Mixed-mating strategies can maximize the benefits and limit the costs of both self-fertilization and outcrossing. In addition to ecological conditions and population dynamics, the economics of mixed mating are determined by individual self-compatibility, i.e. the proportion of self-fertilization events that result in viable offspring. In gynodioecious (hermaphrodites and females) and androdioecious (hermaphrodites and males) species, self-compatibility of hermaphrodites dictates the reproductive potential of the other sex and can exert strong selection on maintenance of the non-hermaphroditic sex. Mangrove rivulus fish populations are androdioecious, and males result from hermaphrodites changing sex. Hermaphrodites overwhelmingly reproduce through internal self-fertilization, but occasionally oviposit unfertilized eggs, which males can fertilize externally. We tested the hypotheses that self-compatibility and fecundity would vary with age and as a function of genotypic variation in propensities for sex change. We reveal that fecundity and self-compatibility vary within individuals across ontogeny and among genotypes with different propensities to change sex. Hermaphrodites from genotypes that frequently change sex were significantly less fecund and self-compatible than hermaphrodites from genotypes that rarely change sex. These differences in self-compatibility and fecundity have the potential to drive mating strategy evolution in mangrove rivulus, specifically the fitness of males and associated spatiotemporal variation in sex ratios within and among populations.","PeriodicalId":520757,"journal":{"name":"Proceedings. Biological sciences","volume":"292 2052","pages":"20250919"},"PeriodicalIF":3.5,"publicationDate":"2025-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12344585/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144839891","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0