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Hidden population turnover of small odontocetes in the northwestern North Pacific during the Holocene. 全新世北太平洋西北部小齿螈的隐蔽种群更替。
IF 2.8 2区 生物学
Biology Letters Pub Date : 2025-01-01 Epub Date: 2025-01-08 DOI: 10.1098/rsbl.2024.0525
Takushi Kishida, Kyohei Sawada, Sakiko Namigata, Takamune Takabatake, Miwa Suzuki, Nanami Takezoe, Takumi Yamamoto, Toshimichi Nakanishi, Hiroyuki Kitagawa
{"title":"Hidden population turnover of small odontocetes in the northwestern North Pacific during the Holocene.","authors":"Takushi Kishida, Kyohei Sawada, Sakiko Namigata, Takamune Takabatake, Miwa Suzuki, Nanami Takezoe, Takumi Yamamoto, Toshimichi Nakanishi, Hiroyuki Kitagawa","doi":"10.1098/rsbl.2024.0525","DOIUrl":"https://doi.org/10.1098/rsbl.2024.0525","url":null,"abstract":"<p><p>Despite numerous studies on the rise and fall of terrestrial megafauna in the late Quaternary, knowledge about marine megafauna from this period remains limited. In this study, we performed radiocarbon dating and partial mitochondrial DNA sequencing from the skeletal remains of three species of small odontocetes (Pacific white-sided dolphins, Dall's porpoises and harbour porpoises) excavated from prehistoric archaeological sites around the Japanese shore dating back to 8500-1000 years ago (ya). Pacific white-sided dolphins that habituated the eastern coast of Hokkaido around 2000 ya belonged to different maternal groups than those from over 5000 ya and today. Furthermore, the species composition excavated from eastern Hokkaido sites varies between 5000 and 2000 ya. These findings suggest two significant population turnovers of small odontocetes on the east coast of Hokkaido, a transitional zone between the coastal area of East Asia and the offshore North Pacific. Notably, the first turnover, occurring between 5000 and 2000 ya, represents the oldest evidence of local population turnovers of marine megafauna during the late Quaternary.</p>","PeriodicalId":9005,"journal":{"name":"Biology Letters","volume":"21 1","pages":"20240525"},"PeriodicalIF":2.8,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11706663/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142944096","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Sweating the small stuff: microclimatic exposure and species habitat associations inform climate vulnerability in a grassland songbird community. 汗流浃背的小东西:小气候暴露和物种栖息地的关联通知气候脆弱性在草原鸣禽群落。
IF 2.8 2区 生物学
Biology Letters Pub Date : 2025-01-01 Epub Date: 2025-01-22 DOI: 10.1098/rsbl.2024.0599
Jacy S Bernath-Plaisted, Christine A Ribic, Benjamin Zuckerberg
{"title":"Sweating the small stuff: microclimatic exposure and species habitat associations inform climate vulnerability in a grassland songbird community.","authors":"Jacy S Bernath-Plaisted, Christine A Ribic, Benjamin Zuckerberg","doi":"10.1098/rsbl.2024.0599","DOIUrl":"10.1098/rsbl.2024.0599","url":null,"abstract":"<p><p>Assessment of species' vulnerability to climate change has been limited by mismatch between coarse macroclimate data and the fine scales at which species select habitat. Habitat mediates climate conditions, and fine-scale habitat features may permit species to exploit favourable microclimates, but habitat preferences can also constrain their ability to do so. We leveraged fine-resolution models of near-surface temperature and humidity in grasslands to understand how microclimates affect climatic exposure and demographics in a grassland bird community. We asked: (i) Do species select favourable nest-site microclimates? (ii) Do habitat preferences limit the ability of species to access microclimates? (iii) What are the demographic consequences of microclimatic exposure? We found limited evidence that grassland birds select cooler microclimates, which may buffer eggs and nestlings from extreme heat. Instead, many species appeared constrained by vegetation preferences. While facultative generalists displayed flexibility to use denser vegetation that provided buffering from high temperatures (>39°C), most obligate species nested in more exposed microclimates. Nesting success in facultative species was not well explained by microclimate, but success in specialized grassland obligates declined with increasing microclimate temperatures. These findings illustrate how microclimate and habitat use can interact to influence the potential vulnerability of species to future climate change.</p>","PeriodicalId":9005,"journal":{"name":"Biology Letters","volume":"21 1","pages":"20240599"},"PeriodicalIF":2.8,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11750397/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142999555","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
DNA and spores from coprolites reveal that colourful truffle-like fungi endemic to New Zealand were consumed by extinct moa (Dinornithiformes). 粪化石的DNA和孢子显示,新西兰特有的色彩鲜艳的松露状真菌是由已灭绝的恐鸟(鸟硫目)食用的。
IF 2.8 2区 生物学
Biology Letters Pub Date : 2025-01-01 Epub Date: 2025-01-15 DOI: 10.1098/rsbl.2024.0440
Alexander P Boast, Jamie R Wood, Jerry Cooper, Nic Bolstridge, George L W Perry, Janet M Wilmshurst
{"title":"DNA and spores from coprolites reveal that colourful truffle-like fungi endemic to New Zealand were consumed by extinct moa (Dinornithiformes).","authors":"Alexander P Boast, Jamie R Wood, Jerry Cooper, Nic Bolstridge, George L W Perry, Janet M Wilmshurst","doi":"10.1098/rsbl.2024.0440","DOIUrl":"10.1098/rsbl.2024.0440","url":null,"abstract":"<p><p>Mycovores (animals that consume fungi) are important for fungal spore dispersal, including ectomycorrhizal (ECM) fungi symbiotic with forest-forming trees. As such, fungi and their symbionts may be impacted by mycovore extinction. New Zealand (NZ) has a diversity of unusual, colourful, endemic sequestrate (truffle-like) fungi, most of which are ECM. As NZ lacks native land mammals (except bats), and sequestrate fungi are typically drab and mammal-dispersed, NZ's sequestrate fungi are hypothesized to be adapted for bird dispersal. However, there is little direct evidence for this hypothesis, as 41% of NZ's native land bird species became extinct since initial human settlement in the thirteenth century. Here, we report ancient DNA and spores from the inside of two coprolites of NZ's extinct, endemic upland moa (<i>Megalapteryx didinus</i>) that reveal consumption and likely dispersal of ECM fungi, including at least one colourful sequestrate species. Contemporary data from NZ show that birds rarely consume fungi and that the introduced mammals preferentially consume exotic fungi. NZ's endemic sequestrate fungi could therefore be dispersal limited compared with fungi that co-evolved with mammalian dispersers. NZ's fungal communities may thus be undergoing a gradual species turnover following avian mycovore extinction and the establishment of mammalian mycovores, potentially affecting forest resilience and facilitating invasion by exotic tree taxa.</p>","PeriodicalId":9005,"journal":{"name":"Biology Letters","volume":"21 1","pages":"20240440"},"PeriodicalIF":2.8,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11732427/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142982434","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Dorsoventral comparison of intraspecific variation in the butterfly wing pattern using a convolutional neural network. 用卷积神经网络比较蝴蝶翅膀图案的种内变异。
IF 2.8 2区 生物学
Biology Letters Pub Date : 2025-01-01 Epub Date: 2025-01-15 DOI: 10.1098/rsbl.2024.0446
Kai Amino, Tsubasa Hirakawa, Masaya Yago, Takashi Matsuo
{"title":"Dorsoventral comparison of intraspecific variation in the butterfly wing pattern using a convolutional neural network.","authors":"Kai Amino, Tsubasa Hirakawa, Masaya Yago, Takashi Matsuo","doi":"10.1098/rsbl.2024.0446","DOIUrl":"10.1098/rsbl.2024.0446","url":null,"abstract":"<p><p>Butterfly wing patterns exhibit notable differences between the dorsal and ventral surfaces, and morphological analyses of them have provided insights into the ecological and behavioural characteristics of wing patterns. Conventional methods for dorsoventral comparisons are constrained by the need for homologous patches or shared features between two surfaces, limiting their applicability across species. We used a convolutional neural network (CNN)-based analysis, which can compare images of the two surfaces without focusing on homologous patches or features, to detect dorsoventral bias in two types of intraspecific variation: sexual dimorphism and mimetic polymorphism. Using specimen images of 29 species, we first showed that the level of sexual dimorphism calculated by CNN-based analysis corresponded well with traditional assessments of sexual dissimilarity, demonstrating the validity of the method. Dorsal biases were widely detected in sexual dimorphism, suggesting that the conventional hypothesis of dorsally biased sexual selection can be supported in a broader range of species. In contrast, mimetic polymorphism showed no such bias, indicating the importance of both surfaces in mimicry. Our study demonstrates the potential versatility of CNN in comparing wing patterns between the two surfaces, while elucidating the relationship between dorsoventrally different selections and dorsoventral biases in intraspecific variations.</p>","PeriodicalId":9005,"journal":{"name":"Biology Letters","volume":"21 1","pages":"20240446"},"PeriodicalIF":2.8,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11732418/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142982581","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Hovering hawkmoths exploit unsteady circulation to produce aerodynamic force. 悬停的飞蛾利用非定常循环产生气动力。
IF 2.8 2区 生物学
Biology Letters Pub Date : 2025-01-01 Epub Date: 2025-01-15 DOI: 10.1098/rsbl.2024.0619
Yun Liu, Biao Li, Deli Zhou
{"title":"Hovering hawkmoths exploit unsteady circulation to produce aerodynamic force.","authors":"Yun Liu, Biao Li, Deli Zhou","doi":"10.1098/rsbl.2024.0619","DOIUrl":"10.1098/rsbl.2024.0619","url":null,"abstract":"<p><p>This study employs an integrated approach, combining three-dimensional flow visualization and two-dimensional flow measurement to investigate the underlying unsteady aerodynamic mechanisms of hovering hawkmoths. Using a single vortex ring model, three aerodynamic force components, such as aerodynamic force induced by unsteady circulation, vortex loop size variation and added mass, are estimated within a dimensionless time (normalized by one wing beat cycle) range of 0.418 < <i>T</i><sup>*</sup> < 0.455, where both the vortex loop circulation and loop size data are available. The force analysis reveals that the unsteady circulation-induced aerodynamic force dominates the overall force production and contributes 67% of the total force while the vortex loop size variation and added mass effect-induced aerodynamic forces only count for 25% and 8%, respectively. These findings suggest the hawkmoth primarily relies on unsteady circulation to generate aerodynamic forces.</p>","PeriodicalId":9005,"journal":{"name":"Biology Letters","volume":"21 1","pages":"20240619"},"PeriodicalIF":2.8,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11732396/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142982585","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Fish reproductive phenology shifts with increasing temperature and year. 鱼类繁殖物候随温度和年份的增加而变化。
IF 2.8 2区 生物学
Biology Letters Pub Date : 2025-01-01 Epub Date: 2025-01-08 DOI: 10.1098/rsbl.2024.0240
S T Koenigbauer, M L Cubbage, L D Warren, J M Tellier, O M Selz, G G Sass, T O Höök
{"title":"Fish reproductive phenology shifts with increasing temperature and year.","authors":"S T Koenigbauer, M L Cubbage, L D Warren, J M Tellier, O M Selz, G G Sass, T O Höök","doi":"10.1098/rsbl.2024.0240","DOIUrl":"10.1098/rsbl.2024.0240","url":null,"abstract":"<p><p>Temperate fishes often spawn in response to environmental cues, such as temperature, thereby facilitating larval emergence concurrent with suitable biotic and abiotic conditions, such as plankton blooms. Climatic changes may alter the reproductive phenology of spring- and autumn-spawning freshwater fish populations. Such effects may depend on the sensitivity of reproductive phenology to ambient temperatures. We applied a meta-analysis approach to test whether annual temperature and year affected fish reproductive phenology. Based on preliminary tests in walleye (<i>Sander vitreus</i>) and Lake Constance whitefish (<i>Coregonus arenicolus</i>), we hypothesized that increasing temperature would promote earlier spring-spawning and later autumn-spawning. We found spawning was significantly earlier in the spring and later in the autumn. We found that migration of autumn-spawning species occurred earlier with warmer temperatures, implying that with increasing temperatures, migrating autumn-spawning species will increase residence time in tributaries. We also found that spring-spawning fishes reproduced earlier in more recent years, while we observed no significant effect in autumn-spawners. Spring- and autumn-spawning fishes displayed interannual variation in spawning dates (mean range of 34.4 and 27.0 days over 33.9 years, respectively), with spring-spawning fishes displaying a significantly broader range in spawning dates.</p>","PeriodicalId":9005,"journal":{"name":"Biology Letters","volume":"21 1","pages":"20240240"},"PeriodicalIF":2.8,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11706652/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142944155","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Growing with dinosaurs: a review of dinosaur reproduction and ontogeny. 与恐龙一起成长:恐龙繁殖与个体发生研究综述。
IF 2.8 2区 生物学
Biology Letters Pub Date : 2025-01-01 Epub Date: 2025-01-15 DOI: 10.1098/rsbl.2024.0474
Kimberley E J Chapelle, Christopher T Griffin, Diego Pol
{"title":"Growing with dinosaurs: a review of dinosaur reproduction and ontogeny.","authors":"Kimberley E J Chapelle, Christopher T Griffin, Diego Pol","doi":"10.1098/rsbl.2024.0474","DOIUrl":"10.1098/rsbl.2024.0474","url":null,"abstract":"<p><p>Since the start of the twenty-first century, there has been a notable increase in annual publications focusing on dinosaur reproduction and ontogeny with researchers using these data to address a range of macroevolutionary questions about dinosaurs. Ontogeny, which is closely tied to osteological morphological variation, impacts several key research areas, such as taxonomic diversity, population dynamics, palaeoecology, macroevolution, as well as the physiological and reproductive factors driving ecological success. While these broad studies have significantly advanced our understanding of dinosaur evolution, they have also revealed important challenges and areas needing further investigation. In this review, we aim to outline some of these challenges in major research areas linked to dinosaur ontogeny, namely reproductive biology, osteohistological growth strategies, morphological osteological variation and the link between ontogeny and macroevolution. We also offer some recommendations for best practices and promising future research directions. These recommendations include increasing sample sizes through fieldwork and exhaustive use of pre-existing fossil collections, using micro-computed tomography (μCT) scanning methods to increase dataset sizes in a non-destructive manner, methodical collection and reposition of μCT scan data, assessing ontogenetic maturity, establishing consistency in terminology and methods and building comprehensive extant comparative datasets.</p>","PeriodicalId":9005,"journal":{"name":"Biology Letters","volume":"21 1","pages":"20240474"},"PeriodicalIF":2.8,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11732415/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142982583","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","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 consensus on the definition of positive animal welfare. 对积极动物福利的定义达成共识。
IF 2.8 2区 生物学
Biology Letters Pub Date : 2025-01-01 Epub Date: 2025-01-22 DOI: 10.1098/rsbl.2024.0382
Jean-Loup Rault, Melissa Bateson, Alain Boissy, Björn Forkman, Bjørn Grinde, Lorenz Gygax, Jes Lynning Harfeld, Sara Hintze, Linda J Keeling, Lubor Kostal, Alistair B Lawrence, Michael T Mendl, Mara Miele, Ruth C Newberry, Peter Sandøe, Marek Špinka, Alex H Taylor, Laura E Webb, Laura Whalin, Margit Bak Jensen
{"title":"A consensus on the definition of positive animal welfare.","authors":"Jean-Loup Rault, Melissa Bateson, Alain Boissy, Björn Forkman, Bjørn Grinde, Lorenz Gygax, Jes Lynning Harfeld, Sara Hintze, Linda J Keeling, Lubor Kostal, Alistair B Lawrence, Michael T Mendl, Mara Miele, Ruth C Newberry, Peter Sandøe, Marek Špinka, Alex H Taylor, Laura E Webb, Laura Whalin, Margit Bak Jensen","doi":"10.1098/rsbl.2024.0382","DOIUrl":"10.1098/rsbl.2024.0382","url":null,"abstract":"<p><p>The concept of animal welfare is evolving due to progress in our scientific understanding of animal biology and changing societal expectations. Animal welfare science has been primarily concerned with minimizing suffering, but there is growing interest in also promoting positive experiences, grouped under the term positive animal welfare (PAW). However, there are discrepancies in the use of the term PAW. An interdisciplinary group arrived at a consensus that 'PAW can be defined as the animal flourishing through the experience of predominantly positive mental states and the development of competence and resilience. PAW goes beyond ensuring good physical health and the prevention and alleviation of suffering. It encompasses animals experiencing positive mental states resulting from rewarding experiences, including having choices and opportunities to actively pursue goals and achieve desired outcomes'. The definition also considers individual and species-specific differences. It provides a framework for researchers to investigate PAW and thereby generate innovative, informative and reproducible science. Studies of PAW can contribute to a richer picture of an animal's life and may elucidate the biological foundations of happiness. The definition creates opportunities to inspire scientific progress in animal biology and to align animal care practices, legislation and markets with societal expectations.</p>","PeriodicalId":9005,"journal":{"name":"Biology Letters","volume":"21 1","pages":"20240382"},"PeriodicalIF":2.8,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11883819/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142999597","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Microbial surveillance versus cytokine responsiveness in native and non-native house sparrows.
IF 2.8 2区 生物学
Biology Letters Pub Date : 2025-01-01 Epub Date: 2025-01-29 DOI: 10.1098/rsbl.2024.0431
Kailey M McCain, Gabby Mansilla, Elizabeth L Sheldon, Cedric Zimmer, Aaron W Schrey, Melissah Rowe, Roi Dor, Kevin D Kohl, Jørgen S Søraker, Henrik Jensen, Kimberley J Mathot, Thinh Vu, Ho Thu Phuong, Blanca Jimeno, Katherine L Buchanan, Massamba Thiam, James Briskie, Lynn B Martin
{"title":"Microbial surveillance versus cytokine responsiveness in native and non-native house sparrows.","authors":"Kailey M McCain, Gabby Mansilla, Elizabeth L Sheldon, Cedric Zimmer, Aaron W Schrey, Melissah Rowe, Roi Dor, Kevin D Kohl, Jørgen S Søraker, Henrik Jensen, Kimberley J Mathot, Thinh Vu, Ho Thu Phuong, Blanca Jimeno, Katherine L Buchanan, Massamba Thiam, James Briskie, Lynn B Martin","doi":"10.1098/rsbl.2024.0431","DOIUrl":"10.1098/rsbl.2024.0431","url":null,"abstract":"<p><p>The success of introduced species often relies on flexible traits, including immune system traits. While theories predict non-natives will have weak defences due to decreased parasite pressure, effective parasite surveillance remains crucial, as infection risk is rarely zero and the evolutionary novelty of infection is elevated in non-native areas. This study examines the relationship between parasite surveillance and cytokine responsiveness in native and non-native house sparrows, hypothesizing that non-natives maintain high pathogen surveillance while avoiding costly inflammation. We made this specific prediction, as this pattern could enable invaders to effectively mitigate pathogen risk in a manner commensurate with the life-history priorities of a colonizing organism (i.e. rapid maturation and high reproductive effort). To test this hypothesis, we measured <i>TLR</i>-2 and <i>TLR</i>-4 expression, markers of pathogen surveillance and cytokine responses (changes in <i>IL-1β</i> and <i>IL-10</i>), regulators of inflammation, to a simulated bacterial infection. In non-native sparrows, we found that as <i>TLR</i>-4 expression increased, <i>IL-1β</i> and <i>IL-10</i> responses decreased, a relationship not observed in native sparrows. Additionally, higher body condition predicted larger <i>IL-1β</i> and <i>IL-10</i> responses in all birds. These findings suggest that high <i>TLR-4</i> surveillance may mitigate strong inflammatory responses in non-native sparrows, with pathological and resource-based costs driving immune variation among and within populations.</p>","PeriodicalId":9005,"journal":{"name":"Biology Letters","volume":"21 1","pages":"20240431"},"PeriodicalIF":2.8,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11776021/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143057925","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Reconstructing dinosaur locomotion. 重建恐龙运动。
IF 2.8 2区 生物学
Biology Letters Pub Date : 2025-01-01 Epub Date: 2025-01-15 DOI: 10.1098/rsbl.2024.0441
Peter L Falkingham
{"title":"Reconstructing dinosaur locomotion.","authors":"Peter L Falkingham","doi":"10.1098/rsbl.2024.0441","DOIUrl":"10.1098/rsbl.2024.0441","url":null,"abstract":"<p><p>Dinosaur locomotor biomechanics are of major interest. Locomotion of an animal affects many, if not most, aspects of life reconstruction, including behaviour, performance, ecology and appearance. Yet locomotion is one aspect of non-avian dinosaurs that we cannot directly observe. To shed light on how dinosaurs moved, we must draw from multiple sources of evidence. Extant taxa provide the basic principles of locomotion, bracket soft-tissue reconstructions and provide validation data for methods and hypotheses applied to dinosaurs. The skeletal evidence itself can be used directly to reconstruct posture, range of motion and mass (segment and whole-body). Building on skeletal reconstructions, musculoskeletal models inform muscle function and form the basis of simulations to test hypotheses of locomotor performance. Finally, fossilized footprints are our only direct record of motion and can provide important snapshots of extinct animals, shedding light on speed, gait and posture. Building confident reconstructions of dinosaur locomotion requires evidence from all four sources of information. This review explores recent work in these areas, with a methodological focus.</p>","PeriodicalId":9005,"journal":{"name":"Biology Letters","volume":"21 1","pages":"20240441"},"PeriodicalIF":2.8,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11732409/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142982589","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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