Proceedings. Biological sciences最新文献_第2页

Selective breeding enhances coral heat tolerance even over small spatial scales. 即使在很小的空间尺度上，选择性繁殖也能增强珊瑚的耐热性。

IF 3.5

Proceedings. Biological sciences Pub Date : 2025-10-01 DOI: 10.1098/rspb.2025.1817

Alexandra Kler Lago, Kate Kiefer, Marie E Strader, Teresa Baptista Nobre, Stephanie F Hendricks, Claudio Richter, Christian Wild, Kate M Quigley

{"title":"Selective breeding enhances coral heat tolerance even over small spatial scales.","authors":"Alexandra Kler Lago, Kate Kiefer, Marie E Strader, Teresa Baptista Nobre, Stephanie F Hendricks, Claudio Richter, Christian Wild, Kate M Quigley","doi":"10.1098/rspb.2025.1817","DOIUrl":"10.1098/rspb.2025.1817","url":null,"abstract":"Coral reefs globally are experiencing escalating mass bleaching and mortality. Reefs along the Western Indian Ocean have been relatively unimpacted. We established heat tolerance baselines and selective breeding efforts for two widespread reef-building Acropora species within the Ningaloo World Heritage Area. To accomplish these goals, we included corals from two thermally distinct southern and northern reefs (mean monthly maximum 27.9°C and 26.6°C, respectively), which reflect both present-day and stress histories. Fitness responses were measured in control and heat stress temperatures (adults = 31.0°C; larvae = 35.5°C), including survival, tissue necrosis, bleaching and photosynthesis. Larvae with one parent from the warmer population exhibited >2.2-fold higher survival under heat stress, while those with both parents from the warmer population survived 1.6-fold better (compared with control larvae with two parents from the cooler population). Photosynthesis was maintained in both species and both populations, suggesting heat responses were host-driven. Adults from both populations of one species (Acropora tenuis) exhibited similar responses to heat, while the other (Acropora millepora) was more variable. These findings are the first to demonstrate that selective breeding can provide heat tolerance enhancement for corals in the Indian Ocean and will be critical to preparing for future marine heatwaves.","PeriodicalId":520757,"journal":{"name":"Proceedings. Biological sciences","volume":"292 2056","pages":"20251817"},"PeriodicalIF":3.5,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12483636/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145202907","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

Earth history and trait innovation drive the global radiation of modern toads. 地球历史和特征创新推动了现代蟾蜍的全球辐射。

IF 3.5

Proceedings. Biological sciences Pub Date : 2025-10-01 Epub Date: 2025-10-15 DOI: 10.1098/rspb.2025.1928

Dongyi Wu, Elizabeth Prendini, Christopher J Raxworthy, Zhijian Wang, Weiwei Zhou, Jinmin Chen, Chatmongkon Suwannapoom, Phuping Sucharitakul, Marcio R Pie, Wei Xu, Zhiyong Yuan

{"title":"Earth history and trait innovation drive the global radiation of modern toads.","authors":"Dongyi Wu, Elizabeth Prendini, Christopher J Raxworthy, Zhijian Wang, Weiwei Zhou, Jinmin Chen, Chatmongkon Suwannapoom, Phuping Sucharitakul, Marcio R Pie, Wei Xu, Zhiyong Yuan","doi":"10.1098/rspb.2025.1928","DOIUrl":"10.1098/rspb.2025.1928","url":null,"abstract":"The distributions of species radiations reflect environmental changes driven by both Earth history (geological processes) and the evolution of biological traits (critical to survival and adaptation), which profoundly drive biodiversity yet are rarely studied together. Modern toads (Bufonidae, Amphibia), an iconic radiation with global distribution and high phenotypic diversity, are an ideal group for exploring these dynamics. Using phylogenomic data from 124 species across six continents, we reconstruct their evolutionary history. Biogeographic analyses suggest modern toads originated in South America approximately 61 million years ago (Ma), later dispersing to Africa and Asia, thereby challenging hypotheses of dispersal via North America. Species diversification rates increased after leaving South America, linked to Cenozoic geological events and key innovations like toxic parotoid glands for predator defence. The emergence of parotoid glands coincided with the South American dispersal, promoting diversification and enabling toads to dominate both Old and New Worlds. In contrast, the evolution of other traits, despite being crucial to adaptation, did not promote species diversification (e.g. large body size) or were ambiguously associated with expansion into the Old World (e.g. developmental modes). These findings highlight the adaptability of modern toads and reveal the interplay between Earth's history and phenotypic innovation in shaping biodiversity.","PeriodicalId":520757,"journal":{"name":"Proceedings. Biological sciences","volume":"292 2057","pages":"20251928"},"PeriodicalIF":3.5,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12520788/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145294979","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

The fish pituitary directly responds to daylength and drives seasonality. 鱼的脑下垂体直接对昼长作出反应，并驱动季节性。

IF 3.5

Proceedings. Biological sciences Pub Date : 2025-10-01 Epub Date: 2025-10-08 DOI: 10.1098/rspb.2025.1611

Stephen D McCormick, Daniel J Hall, Marty Kwok Shing Wong, Takehiro Tsukada, Björn Thrandur Björnsson

{"title":"The fish pituitary directly responds to daylength and drives seasonality.","authors":"Stephen D McCormick, Daniel J Hall, Marty Kwok Shing Wong, Takehiro Tsukada, Björn Thrandur Björnsson","doi":"10.1098/rspb.2025.1611","DOIUrl":"10.1098/rspb.2025.1611","url":null,"abstract":"Seasonal timing is important for many critical life history events of organisms, and annual changes in daylength provide a reliable seasonal cue. In birds and mammals, photoperiod-driven seasonality is caused by changes in pituitary thyroid stimulating hormone (TSH), brain deiodinase (DIO) and triiodothyronine (T3), but it is unclear if a similar mechanism exists in fish. We used anadromous Atlantic salmon that migrate downstream and enter the ocean in spring to examine photoperiod signaling in fish. Manipulations of diurnal and circannual photoperiod cycles indicate that pituitary tshβb and brain dio2b transcription are long day signals that precede endocrine and physiological changes necessary for seawater entry. Exposure to long days caused increased dio2b transcription and T3 levels throughout the brain, and intracerebral T3 treatment resulted in elevated levels of plasma GH that drives migration physiology. Significant ambient light levels reach the pituitary, and transcription of non-visual opsins were found in the pituitary. The isolated (in vitro) pituitary directly responds to increased daylength with elevated tshβb transcription, the first time this has been shown in any animal. The results indicate that photoperiod-driven seasonality in fish is driven by direct light stimulation of the pituitary, expanding the known mechanisms of photoperiod responses in vertebrates.","PeriodicalId":520757,"journal":{"name":"Proceedings. Biological sciences","volume":"292 2056","pages":"20251611"},"PeriodicalIF":3.5,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12503939/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145246340","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

Effects of frugivore species pool and seed size on the diversity and functional composition of frugivores visiting fruiting trees. 食用菌种类库和种子大小对访果树食用菌多样性和功能组成的影响。

IF 3.5

Proceedings. Biological sciences Pub Date : 2025-10-01 Epub Date: 2025-10-08 DOI: 10.1098/rspb.2025.1775

Rohit Naniwadekar, Abhishek Gopal, Rintu Mandal, Arpitha Jayanth, Vatcharavee Sriprasertsil, Sartaj Ghuman, Navendu Page, Saniya Chaplod, Himanshu Lad, Aditya Gadkari, Vignesh Chandran, Natasha Abhay Desai, Rasika Kadam, Bee Choo Strange, Vijak Chimchome, George A Gale, Jahnavi Joshi

{"title":"Effects of frugivore species pool and seed size on the diversity and functional composition of frugivores visiting fruiting trees.","authors":"Rohit Naniwadekar, Abhishek Gopal, Rintu Mandal, Arpitha Jayanth, Vatcharavee Sriprasertsil, Sartaj Ghuman, Navendu Page, Saniya Chaplod, Himanshu Lad, Aditya Gadkari, Vignesh Chandran, Natasha Abhay Desai, Rasika Kadam, Bee Choo Strange, Vijak Chimchome, George A Gale, Jahnavi Joshi","doi":"10.1098/rspb.2025.1775","DOIUrl":"10.1098/rspb.2025.1775","url":null,"abstract":"The relationship between biodiversity and ecosystem functioning in seed dispersal remains understudied despite its critical role in maintaining plant diversity in the tropics. Field studies on this relationship are often confounded by environmental and phylogenetic variations across species richness gradients. We examined how overall avian frugivore species richness at a site influenced the frugivore richness, visitation rates and functional composition of two key effect traits (beak width and hand-wing index) on fruiting trees. Across six sites in tropical Asia, spanning a sevenfold gradient in frugivore species richness but with similar forest types and phylogenetically nested frugivore communities, we recorded 34 014 interactions between 138 avian frugivores and 131 woody plant species. Our results provide some support for the biodiversity-ecosystem functioning relationship, as higher overall frugivore species richness increased the number of frugivore species visiting individual fruiting trees but not the functional composition of frugivores. Seed size had a stronger influence on the frugivore species richness, visitation rates and the beak size of visiting frugivores, highlighting the dominant role of morphological trait matching in influencing plant-frugivore interactions. Our findings suggest functional redundancy in certain aspects of seed dispersal effectiveness due to density compensation and the presence of key seed disperser lineages in species-poor sites.","PeriodicalId":520757,"journal":{"name":"Proceedings. Biological sciences","volume":"292 2056","pages":"20251775"},"PeriodicalIF":3.5,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12503949/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145246345","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

Extinction debt of species and ecological interactions in a fragmented landscape. 破碎景观中物种灭绝债务和生态相互作用。

IF 3.5

Proceedings. Biological sciences Pub Date : 2025-10-01 Epub Date: 2025-10-08 DOI: 10.1098/rspb.2025.1640

Micaela Santos, Diego P Vázquez, Julian Resasco

{"title":"Extinction debt of species and ecological interactions in a fragmented landscape.","authors":"Micaela Santos, Diego P Vázquez, Julian Resasco","doi":"10.1098/rspb.2025.1640","DOIUrl":"10.1098/rspb.2025.1640","url":null,"abstract":"Addressing the worldwide biodiversity crisis in fragmented landscapes requires considering both immediate and delayed extinctions-the extinction debt. This debt arises from the gradual loss of species following habitat fragmentation. Additionally, species interactions may also experience an extinction debt, affecting ecosystem structure and function. However, the extinction debt for species interactions has received little attention. We studied the lasting effects of habitat fragmentation on plants, herbivore insects of four trophic guilds, parasitoids and their trophic interactions in a dryland landscape in central-western Argentina. Assuming a paid debt in long-fragmented habitats, we examined the potentially unpaid debt in recently fragmented habitats as the difference between the current richness of species and interactions and their expected richness based on area and connectivity from long-fragmented habitats. We found a higher extinction debt for herbivores and plant-herbivore interactions in small, isolated habitats and a lower extinction debt for plants only in small habitats. By contrast, the extinction debt of parasitoids was higher in large, well-connected habitats, while there was no extinction debt detected for herbivore-parasitoid interactions. Understanding the magnitude of extinction debts for species and interactions offers guidance for mitigating future extinctions of species and interactions to curb the degradation of ecosystems and preserve their long-term function.","PeriodicalId":520757,"journal":{"name":"Proceedings. Biological sciences","volume":"292 2056","pages":"20251640"},"PeriodicalIF":3.5,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12503929/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145246343","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

A functional framework for a comprehensive study of welfare in fishes. 鱼类福利综合研究的功能框架。

IF 3.5

Proceedings. Biological sciences Pub Date : 2025-10-01 Epub Date: 2025-10-08 DOI: 10.1098/rspb.2025.1833

Maria Victoria Alvarado, Jose Miguel Cerdá-Reverter, Felipe Espigares

{"title":"A functional framework for a comprehensive study of welfare in fishes.","authors":"Maria Victoria Alvarado, Jose Miguel Cerdá-Reverter, Felipe Espigares","doi":"10.1098/rspb.2025.1833","DOIUrl":"10.1098/rspb.2025.1833","url":null,"abstract":"Fish production is expected to grow significantly in the coming years. The welfare of captive animals in increasingly intensive systems has historically raised ethical concerns, suggesting that such intensification in fish production will drive public debate and inform policy discussions. Traditional assessments in fish welfare have relied on physical, physiological and/or behavioural measures of biological dysfunction, offering insights into health and functional integrities, yet these approaches face notable limitations. By contrast, affective-based approaches, which use behavioural measures to assess affective state and are widely employed in welfare science, remain underexplored in fishes. Recent advances, such as judgement bias paradigms, provide reliable tools to measure affective states. These support integrative welfare assessments that combine affective evaluations with measures of health and biological functioning. A multi-level approach ensures a comprehensive and robust evaluation of fish welfare, avoiding reliance on any single type of evidence and enabling the exploration of different facets of the welfare construct. While this work synthesizes existing indicators, its main contribution lies in proposing a functional framework that prioritizes affective state evaluation while systematically integrating and validating complementary metrics. By aligning with contemporary ethical and scientific standards, this approach aims to advance the conceptualization and operationalization of fish welfare.","PeriodicalId":520757,"journal":{"name":"Proceedings. Biological sciences","volume":"292 2056","pages":"20251833"},"PeriodicalIF":3.5,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12503954/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145246338","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

Disparate feeding mechanics between two hadrosaurid dinosaurs support the potential for resource partitioning. 两种鸭嘴龙之间不同的进食机制支持了资源分配的可能性。

IF 3.5

Proceedings. Biological sciences Pub Date : 2025-10-01 DOI: 10.1098/rspb.2025.0921

Thomas W Dudgeon, David C Evans

{"title":"Disparate feeding mechanics between two hadrosaurid dinosaurs support the potential for resource partitioning.","authors":"Thomas W Dudgeon, David C Evans","doi":"10.1098/rspb.2025.0921","DOIUrl":"10.1098/rspb.2025.0921","url":null,"abstract":"The Dinosaur Park Formation (DPF) of western Canada is well known for its diverse fossil assemblage, preserving over a dozen species of large-bodied herbivorous dinosaurs. The high density of large herbivores has raised questions of how these animals were able to coexist and limit competition, leading to several studies investigating the potential for resource partitioning. In the DPF, hadrosaurids are of particular ecological significance because of their abundance, diversity and complex feeding system. Here, we used 3D muscle reconstructions and finite-element analysis to evaluate the mechanical performance of the cranium and lower jaws of the lambeosaurine Corythosaurus casuarius and the contemporaneous hadrosaurine Gryposaurus notabilis to test for the potential of resource partitioning. We found G. notabilis had larger adductor muscles than similarly sized C. casuarius, but the latter had greater mechanical efficiency, resulting in similar bite forces for similarly sized animals. The cranium of C. casuarius is more resistant to bending than G. notabilis and exhibits a derived stress distribution that is probably associated with the supracranial crest. Resource partitioning between these taxa would have been primarily size-mediated, where larger G. notabilis would have been able to process tougher plant material than smaller C. casuarius at equivalent ontogenetic stages.","PeriodicalId":520757,"journal":{"name":"Proceedings. Biological sciences","volume":"292 2056","pages":"20250921"},"PeriodicalIF":3.5,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12483637/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145202893","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

Social and spatial drivers of the multitiered structure of zebra finch social networks. 斑胸草雀社会网络多层次结构的社会和空间驱动因素。

IF 3.5

Proceedings. Biological sciences Pub Date : 2025-10-01 Epub Date: 2025-10-08 DOI: 10.1098/rspb.2025.0978

Yixuan Zhang, Xinyi Jiang, Lucy M Aplin, Daiping Wang, Damien R Farine

{"title":"Social and spatial drivers of the multitiered structure of zebra finch social networks.","authors":"Yixuan Zhang, Xinyi Jiang, Lucy M Aplin, Daiping Wang, Damien R Farine","doi":"10.1098/rspb.2025.0978","DOIUrl":"10.1098/rspb.2025.0978","url":null,"abstract":"Social network structure plays a key role in shaping processes in animal populations. However, our understanding of how individual-level social decisions scale up to population-level social structures remains limited, particularly outside mammals. Here, we used continuous, fine-scale tracking of four large captive colonies of zebra finches (Taeniopygia guttata), revealing that zebra finches consistently maintain 1-2 closest contacts, 6-7 close contacts and 22-24 intermediate contacts, with the identities of these contacts remaining stable across days. By separating spatial co-occurrence from social preferences using null models, we demonstrate that closest and close partners are maintained by social choice, while intermediate partners are shaped by spatial affinity. These results suggest that zebra finch egocentric networks are made up of at least three different tiers of consistent, differentiated relationships. Importantly, we show that these tiers-when combined across individuals-form a multitiered social structure at the colony level. Finally, we review literature on egocentric animal networks, highlighting similarities in patterns to other species, and discuss the distinctions between multitiered and multilevel societies. Our results suggest that fundamental constraints in time, cognition and spatial organization may drive common structural properties in animal social networks across taxa.","PeriodicalId":520757,"journal":{"name":"Proceedings. Biological sciences","volume":"292 2056","pages":"20250978"},"PeriodicalIF":3.5,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12503950/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145246344","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

Ancient DNA and biomarkers from artefacts: insights into technology and cultural practices in Neolithic Europe. 来自人工制品的古代DNA和生物标志物：对新石器时代欧洲技术和文化实践的见解。

IF 3.5

Proceedings. Biological sciences Pub Date : 2025-10-01 Epub Date: 2025-10-15 DOI: 10.1098/rspb.2025.0092

Anna E White, Tabea J Koch, Theis Zetner Trolle Jensen, Jonas Niemann, Mikkel Winther Pedersen, Maja Birk Søtofte, Didier Binder, Cédric Lepère, Christian Harb, Renata Huber, Léonard Kramer, Michel Mauvilly, Renate Ebersbach, Joachim Wahl, Aimée Little, Nathan Wales, Martine Regert, Hannes Schroeder

{"title":"Ancient DNA and biomarkers from artefacts: insights into technology and cultural practices in Neolithic Europe.","authors":"Anna E White, Tabea J Koch, Theis Zetner Trolle Jensen, Jonas Niemann, Mikkel Winther Pedersen, Maja Birk Søtofte, Didier Binder, Cédric Lepère, Christian Harb, Renata Huber, Léonard Kramer, Michel Mauvilly, Renate Ebersbach, Joachim Wahl, Aimée Little, Nathan Wales, Martine Regert, Hannes Schroeder","doi":"10.1098/rspb.2025.0092","DOIUrl":"10.1098/rspb.2025.0092","url":null,"abstract":"Birch bark tar was widely used throughout prehistoric Europe for hafting stone tools as well as various other purposes. While previous research has mainly focused on the identification and production of birch bark tar, its diverse uses remain to be fully explored. In this study, we combined ancient DNA with organic residue analysis to analyse 30 birch tar artefacts from nine Neolithic sites in and around the Alps. We identified birch tar as the main component, with some samples also containing conifer resin or tar, possibly added to modify its properties. Degradation markers indicate that tar used for ceramic repair was heated repeatedly, probably during cooking. Additionally, the presence of human and oral microbial DNA in some of the samples suggests the tar was chewed, in some cases by multiple individuals. The human DNA also enables us to determine the sex of those who chewed the tar, offering insights into gendered practices in the past, while plant and animal DNA shed light on past diets and the possible use of additives. This study underscores the value of integrating organic residue and ancient DNA analysis of archaeological artefacts to deepen our understanding of past cultural practices.","PeriodicalId":520757,"journal":{"name":"Proceedings. Biological sciences","volume":"292 2057","pages":"20250092"},"PeriodicalIF":3.5,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12520791/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145294993","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

Ecological and evolutionary influences on the elemental composition of birds. 生态学和进化对鸟类元素组成的影响。

IF 3.5

Proceedings. Biological sciences Pub Date : 2025-10-01 Epub Date: 2025-10-08 DOI: 10.1098/rspb.2025.1276

Ethan S Duvall, Louis A Derry, Peter B McIntyre, Alexander S Flecker

{"title":"Ecological and evolutionary influences on the elemental composition of birds.","authors":"Ethan S Duvall, Louis A Derry, Peter B McIntyre, Alexander S Flecker","doi":"10.1098/rspb.2025.1276","DOIUrl":"10.1098/rspb.2025.1276","url":null,"abstract":"The evolutionary and ecological diversity of animals is often reflected in the elemental composition of their bodies. Despite decades of stoichiometric research, remarkably little is known about the elemental composition of birds, the most diverse group of land vertebrates. This gap limits our understanding of vertebrate body composition and its implications for ecosystem functioning. Here, we report the body stoichiometry (%C, %N, %P, C:N, C:P, N:P) of 32 bird species spanning diverse ecological traits and phylogenetic lineages. Compared to other vertebrates, birds exhibit consistently low phosphorus content, probably reflecting two key flight adaptations: skeletal minimization (i.e. restricted investment in phosphorus-rich bone) and feather production (i.e. investment in phosphorus-poor keratin). Among birds, carbon content is associated with body fat, which has distinct stoichiometry and is known to fluctuate seasonally. Feathers constitute ~25% of a bird's body nitrogen on average, hence variation in feather investment can produce significant differences. Unlike patterns observed in other vertebrates, body size, taxonomy, phylogeny and diet poorly predict bird stoichiometry. Instead, we infer that selective constraints arising from flight (skeletal minimization, feather investment) and phenological cycles (fat storage, feather molting) shape bird stoichiometry. These findings can inform research on avian nutrition, ecology and zoogeochemistry amid global change.","PeriodicalId":520757,"journal":{"name":"Proceedings. Biological sciences","volume":"292 2056","pages":"20251276"},"PeriodicalIF":3.5,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12503943/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145246337","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