Proceedings of the Royal Society B: Biological Sciences最新文献_第9页

Dietary specialization among individual squid: using Illex argentinus as a case and meta-analysis for other squid species. 鱿鱼个体的膳食特化：以阿根廷鱿鱼（Illex argentinus）为例，并对其他鱿鱼物种进行元分析。

IF 3.8 1区生物学

Proceedings of the Royal Society B: Biological Sciences Pub Date : 2025-03-01 Epub Date: 2025-03-05 DOI: 10.1098/rspb.2024.2591

Dongming Lin, Na Zang, Wei Song, André E Punt, Yi Gong, Gang Li, Xinjun Chen

{"title":"Dietary specialization among individual squid: using Illex argentinus as a case and meta-analysis for other squid species.","authors":"Dongming Lin, Na Zang, Wei Song, André E Punt, Yi Gong, Gang Li, Xinjun Chen","doi":"10.1098/rspb.2024.2591","DOIUrl":"10.1098/rspb.2024.2591","url":null,"abstract":"Squid, which occupy a similar role to teleost fish as open water predators, are opportunistic foragers. However, there is a lack of empirical evidence related to whether individual squid specialize their diets to optimize fitness. We investigated whether individual squid have specialized diets and what factors impact any specialization using the Argentine shortfin squid as a case study species, coupled with a meta-analysis for other squid species. Hutchinson's n-dimensional hypervolume concept was used to estimate individual dietary niches based on stable isotope and fatty acid analyses. Individual squid showed a high degree of dietary specialization, with individual specialization indices typically greater than 0.70, and pairwise niche overlap less than 0.5, with adults having greater specialization in dietary niche. For the Argentine shortfin squid, higher reproductive investment and water temperature increased individual dietary specialization. Individual dietary specialization probably reduces interindividual competition, optimizes food resource use and increases fitness and hence net energy gain for reproduction. The existence of dietary specialization at the individual level provides insight into the life history of squid.","PeriodicalId":20589,"journal":{"name":"Proceedings of the Royal Society B: Biological Sciences","volume":"292 2042","pages":"20242591"},"PeriodicalIF":3.8,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11881021/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143557812","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Bioluminescence and repeated deep-sea colonization shaped the diversification and body size evolution of squaliform sharks. 生物发光和反复的深海殖民塑造了鳞状鲨鱼的多样化和体型进化。

IF 3.8 1区生物学

Proceedings of the Royal Society B: Biological Sciences Pub Date : 2025-03-01 Epub Date: 2025-03-05 DOI: 10.1098/rspb.2024.2932

Alexis F P Marion, Fabien L Condamine, Guillaume Guinot

{"title":"Bioluminescence and repeated deep-sea colonization shaped the diversification and body size evolution of squaliform sharks.","authors":"Alexis F P Marion, Fabien L Condamine, Guillaume Guinot","doi":"10.1098/rspb.2024.2932","DOIUrl":"10.1098/rspb.2024.2932","url":null,"abstract":"Understanding the underlying mechanisms that have generated the striking biodiversity inhabiting deep-sea ecosystems remains a challenge in evolutionary biology. Here, we addressed this topic by studying the macroevolutionary dynamics that have shaped the diversification of squaliform sharks, an iconic clade of deep-sea vertebrates. Using phylogenetic comparative methods and fossil-based Bayesian diversification estimates, both at species level, we combined fossil record data with molecular phylogenies to provide a quantitative framework for understanding the evolutionary history of Squaliformes. We reveal that early squaliform lineages originated in shallow water during the Early Cretaceous and experienced multiple independent shifts toward the deep sea during the Late Cretaceous. Importantly, we show that these shifts were likely facilitated by the acquisition of bioluminescence, which significantly impacted body size evolution among squaliform lineages. Furthermore, deep-sea colonization events coincide with periods of climate warming and marine transgression at the Cenomanian-Turonian and Palaeocene-Eocene transitions. Following these colonizations, deep-sea squaliform lineages have diversified over the last 30 Myr, resulting in one of the richest deep-sea radiations in sharks. These results demonstrate how the complex interplay between key innovation and colonization of new habitats drove major ecological transition, highlighting the importance of an integrative framework when studying deep-time macroevolutionary dynamics.","PeriodicalId":20589,"journal":{"name":"Proceedings of the Royal Society B: Biological Sciences","volume":"292 2042","pages":"20242932"},"PeriodicalIF":3.8,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11880842/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143557806","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Plasticity and the evolution of group-level regulation of cellular differentiation in the volvocine algae. 藻藻细胞分化的可塑性和群体水平调控的进化。

IF 3.8 1区生物学

Proceedings of the Royal Society B: Biological Sciences Pub Date : 2025-03-01 Epub Date: 2025-03-19 DOI: 10.1098/rspb.2024.2477

Dinah R Davison, Aurora M Nedelcu, Onyi De Andre Eneji, Richard E Michod

{"title":"Plasticity and the evolution of group-level regulation of cellular differentiation in the volvocine algae.","authors":"Dinah R Davison, Aurora M Nedelcu, Onyi De Andre Eneji, Richard E Michod","doi":"10.1098/rspb.2024.2477","DOIUrl":"10.1098/rspb.2024.2477","url":null,"abstract":"During the evolution of multicellularity, the unit of selection transitions from single cells to integrated multicellular cell groups, necessitating the evolution of group-level traits such as somatic differentiation. However, the processes involved in this change in units of selection are poorly understood. We propose that the evolution of soma in the volvocine algae included an intermediate step involving the plastic development of somatic-like cells. We show that Eudorina elegans, a multicellular volvocine algae species previously thought to be undifferentiated, can develop somatic-like cells following environmental stress (i.e. cold shock). These cells resemble obligate soma in closely related species. We find that somatic-like cells can differentiate directly from cold-shocked cells. This differentiation is a cell-level trait, and the differentiated colony phenotype is a cross-level by-product of cell-level processes. The offspring of cold-shocked colonies also develop somatic-like cells. Since these cells were not directly exposed to the stressor, their differentiation was regulated during group development. Consequently, they are a true group-level trait and not a by-product of cell-level traits. We argue that group-level traits, such as obligate somatic differentiation, can originate through plasticity and that cross-level by-products may be an intermediate step in the evolution of group-level traits.","PeriodicalId":20589,"journal":{"name":"Proceedings of the Royal Society B: Biological Sciences","volume":"292 2043","pages":"20242477"},"PeriodicalIF":3.8,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11920831/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143658382","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Predicting speech-in-noise ability with static and dynamic auditory figure-ground analysis using structural equation modelling. 利用结构方程模型通过静态和动态听觉图地分析预测噪音中的语音能力

IF 3.8 1区生物学

Proceedings of the Royal Society B: Biological Sciences Pub Date : 2025-03-01 Epub Date: 2025-03-05 DOI: 10.1098/rspb.2024.2503

Xiaoxuan Guo, Ester Benzaquén, Emma Holmes, Joel Isaac Berger, Inga Charlotte Brühl, William Sedley, Steven P Rushton, Tim Griffiths

{"title":"Predicting speech-in-noise ability with static and dynamic auditory figure-ground analysis using structural equation modelling.","authors":"Xiaoxuan Guo, Ester Benzaquén, Emma Holmes, Joel Isaac Berger, Inga Charlotte Brühl, William Sedley, Steven P Rushton, Tim Griffiths","doi":"10.1098/rspb.2024.2503","DOIUrl":"10.1098/rspb.2024.2503","url":null,"abstract":"Auditory figure-ground paradigms assess the ability to extract a foreground figure from a random background, a crucial part of central hearing. Previous studies have shown that the ability to extract static figures predicts speech-in-noise ability. In this study, we assessed both fixed and dynamic figures: the latter comprised component frequencies that vary over time like natural speech. We examined how well speech-in-noise ability (for words and sentences) could be predicted by age, peripheral hearing, static and dynamic figure-ground with 159 participants. Regression demonstrated that in addition to audiogram and age, low-frequency dynamic figure-ground accounted for an independent variance of both word- and sentence-in-noise perception, higher than the static figure-ground. The structural equation models showed that a combination of all types of figure-ground tasks and age and audiogram could explain up to 89% of the variance in speech-in-noise, and figure-ground predicted speech-in-noise with a higher effect size than the audiogram or age. Age influenced word perception in noise directly but sentence perception indirectly via effects on peripheral and central hearing. Overall, this study demonstrates that dynamic figure-ground predicts a significant variance in real-life listening better than the prototype figure-ground. The combination of figure-ground tasks predicts real-life listening better than audiogram or age.","PeriodicalId":20589,"journal":{"name":"Proceedings of the Royal Society B: Biological Sciences","volume":"292 2042","pages":"20242503"},"PeriodicalIF":3.8,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11881018/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143557821","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Feats of supercontractile strength: functional convergence of supercontracting muscle properties among hyoid musculature in chameleons. 超收缩力量的壮举：变色龙舌骨肌肉组织超收缩肌肉特性的功能收敛。

IF 3.8 1区生物学

Proceedings of the Royal Society B: Biological Sciences Pub Date : 2025-03-01 Epub Date: 2025-03-26 DOI: 10.1098/rspb.2025.0078

Nikole G Schneider, Nicholas A Henchal, Raul E Diaz, Christopher V Anderson

{"title":"Feats of supercontractile strength: functional convergence of supercontracting muscle properties among hyoid musculature in chameleons.","authors":"Nikole G Schneider, Nicholas A Henchal, Raul E Diaz, Christopher V Anderson","doi":"10.1098/rspb.2025.0078","DOIUrl":"10.1098/rspb.2025.0078","url":null,"abstract":"The structure of sarcomeres imposes limits to the capacity of striated muscle to change length and produce force, with z-disc and myosin filament interactions constraining shortening. Conversely, supercontracting muscles, hitherto only known among vertebrates in the tongue retractor muscle (m. hyoglossus) of chameleons, have perforated z-discs that allow myosin filaments to extend through them into adjacent sarcomeres, permitting continued shortening and force development. Additional hyolingual muscles in chameleons undergo extreme length changes during feeding as well and may benefit from supercontractile properties. We compared length-tension relationship data and transmission electron microscopy images from four chameleon muscles to test for the presence of additional supercontracting muscle. We document the second known example of a supercontracting muscle among vertebrates (the m. sternohyoideus superficialis) and show that the m. sternohyoideus profundus exhibits functional convergence with supercontracting muscles by increasing the range of muscle lengths over which it can exert force through the exploitation of sarcomere length non-uniformity across its muscle fibres. Additionally, we show that chameleon supercontracting muscles may share common contractile and structural properties due to a common origin from occipital somites. These results provide important insights into the developmental and evolutionary patterns associated with supercontracting muscle and extreme muscle elongation.","PeriodicalId":20589,"journal":{"name":"Proceedings of the Royal Society B: Biological Sciences","volume":"292 2043","pages":"20250078"},"PeriodicalIF":3.8,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11936678/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143711062","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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 solutions to dietary stress: experimental evolution reveals host-microbiome interplay in Drosophila melanogaster. 饮食应激的微生物解决方案：实验进化揭示了黑腹果蝇宿主-微生物组的相互作用。

IF 3.8 1区生物学

Proceedings of the Royal Society B: Biological Sciences Pub Date : 2025-03-01 Epub Date: 2025-03-26 DOI: 10.1098/rspb.2024.2558

Lucas Henry, Michael Fernandez, Andrew Webb, Julien Ayroles

{"title":"Microbial solutions to dietary stress: experimental evolution reveals host-microbiome interplay in Drosophila melanogaster.","authors":"Lucas Henry, Michael Fernandez, Andrew Webb, Julien Ayroles","doi":"10.1098/rspb.2024.2558","DOIUrl":"10.1098/rspb.2024.2558","url":null,"abstract":"Can the microbiome serve as a reservoir of adaptive potential for hosts? To address this question, we leveraged approximately 150 generations of experimental evolution in Drosophila melanogaster on a stressful, high-sugar diet. We performed a fully reciprocal transplant experiment using the control and high-sugar bacteria. If the microbiome confers benefits to hosts, then transplant recipients should gain fitness benefits compared with controls. Interestingly, we found that such benefits exist, but their magnitude depends on evolutionary history-mismatches between fly evolution and microbiome reduced fecundity and potentially exerted fitness costs, especially in the stressful high-sugar diet. The dominant high-sugar bacteria (Acetobacter pasteurianus) uniquely encoded several genes to enable uric acid degradation, mediating the toxic effects of uric acid accumulation due to the high-sugar diet for flies. Our study demonstrates that host genotype × microbiome × environment interactions have substantial effects on host phenotype, highlighting how host evolution and ecological context together shape the adaptive potential of the microbiome.","PeriodicalId":20589,"journal":{"name":"Proceedings of the Royal Society B: Biological Sciences","volume":"292 2043","pages":"20242558"},"PeriodicalIF":3.8,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11936674/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143711106","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Landscape heterogeneity and novelty drive avian oscillatory flight behaviour during forebrain Wulst-dependent visual map learning. 景观异质性和新颖性驱动鸟类前脑wulst依赖视觉地图学习中的振荡飞行行为。

IF 3.8 1区生物学

Proceedings of the Royal Society B: Biological Sciences Pub Date : 2025-03-01 Epub Date: 2025-03-12 DOI: 10.1098/rspb.2024.3099

Sara Cioccarelli, Dimitri Giunchi, Giovanni Casini, Enrica Pollonara, Verner P Bingman, Anna Gagliardo

{"title":"Landscape heterogeneity and novelty drive avian oscillatory flight behaviour during forebrain Wulst-dependent visual map learning.","authors":"Sara Cioccarelli, Dimitri Giunchi, Giovanni Casini, Enrica Pollonara, Verner P Bingman, Anna Gagliardo","doi":"10.1098/rspb.2024.3099","DOIUrl":"10.1098/rspb.2024.3099","url":null,"abstract":"Homing pigeons rely on familiar landscape features in learning a visual map, which is orchestrated by the forebrain visual Wulst and hippocampus. Recent global positioning system tracking studies showed that pigeons with damage to the visual Wulst or hippocampus exhibited a still poorly understood, persistent oscillatory flight behaviour, unlike intact pigeons whose oscillations decrease with experience. To evaluate whether landscape heterogeneity influences the extent of these oscillations, we compared the flight behaviour of both intact and Wulst-lesioned pigeons when flying over the sea versus land. Regardless of treatment, pigeons exhibited less oscillatory flight behaviour over the homogeneous landscape of the sea. Further releases from familiar and unfamiliar sites tested whether oscillatory flight behaviour may be influenced by the level of familiarity with the landscape. Indeed, intact pigeons reduced their oscillatory behaviour as landscape familiarity increased. In contrast, Wulst-damaged pigeons persisted in displaying robust oscillatory flight behaviour regardless of the level of landscape familiarity, suggesting that previously experienced landscapes remained relatively unfamiliar to them. The data support the hypothesis that oscillatory flight behaviour reflects active visual scanning, most pronounced over novel, heterogeneous landscapes, contributing to visual map learning. Further, the data suggest a crucial role of the forebrain Wulst for such learning.","PeriodicalId":20589,"journal":{"name":"Proceedings of the Royal Society B: Biological Sciences","volume":"292 2042","pages":"20243099"},"PeriodicalIF":3.8,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11896696/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143606051","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Disruption of collective behaviour correlates with reduced interaction efficiency. 集体行为的破坏与互动效率的降低有关。

IF 3.8 1区生物学

Proceedings of the Royal Society B: Biological Sciences Pub Date : 2025-03-01 Epub Date: 2025-03-19 DOI: 10.1098/rspb.2025.0039

Justine B Nguyen, Chelsea N Cook

{"title":"Disruption of collective behaviour correlates with reduced interaction efficiency.","authors":"Justine B Nguyen, Chelsea N Cook","doi":"10.1098/rspb.2025.0039","DOIUrl":"10.1098/rspb.2025.0039","url":null,"abstract":"Group-living organisms commonly engage in collective behaviour to respond to an ever-changing environment. As animals face environmental change, establishing the mechanisms of information used to collectively behave is critical. Western honeybees (Apis mellifera) are highly social insects that tightly coordinate many individuals to ensure optimum colony function. We used fanning, a collective thermoregulatory behaviour that depends on both social and thermal contexts, as a case study for collective behaviour. To identify potential mechanisms behind the coordination of fanning, we used oxytetracycline, an antibiotic used in apiculture and known environmental pollutant that impairs bee physiology and behaviour. Specifically, we hypothesized that interactions drive the fanning response in honeybees and predicted that oxytetracycline would disrupt social interactions which will lead to a reduced fanning response. We found that longer exposure to antibiotics decreases fanning. Using automated tracking, we show that antibiotic treatment reduces the number of interactions, impeding the social dynamics within these small groups. Our results contribute strong evidence that interactions between individuals may drive the collective fanning response in honeybees. This work emphasizes the importance of understanding the social mechanisms that underlie collective animal coordination and how the effects of pollutants on an individual can scale to affect populations.","PeriodicalId":20589,"journal":{"name":"Proceedings of the Royal Society B: Biological Sciences","volume":"292 2043","pages":"20250039"},"PeriodicalIF":3.8,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11919496/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143658379","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Enhanced and idiosyncratic neural representations of personally typical scenes. 个人典型场景的增强和特殊神经表征。

IF 3.8 1区生物学

Proceedings of the Royal Society B: Biological Sciences Pub Date : 2025-03-01 Epub Date: 2025-03-26 DOI: 10.1098/rspb.2025.0272

Gongting Wang, Lixiang Chen, Radoslaw Martin Cichy, Daniel Kaiser

{"title":"Enhanced and idiosyncratic neural representations of personally typical scenes.","authors":"Gongting Wang, Lixiang Chen, Radoslaw Martin Cichy, Daniel Kaiser","doi":"10.1098/rspb.2025.0272","DOIUrl":"10.1098/rspb.2025.0272","url":null,"abstract":"Previous research shows that the typicality of visual scenes (i.e. if they are good examples of a category) determines how easily they can be perceived and represented in the brain. However, the unique visual diets individuals are exposed to across their lifetimes should sculpt very personal notions of typicality. Here, we thus investigated whether scenes that are more typical to individual observers are more accurately perceived and represented in the brain. We used drawings to enable participants to describe typical scenes (e.g. a kitchen) and converted these drawings into three-dimensional renders. These renders were used as stimuli in a scene categorization task, during which we recorded electroencephalography (EEG). In line with previous findings, categorization was most accurate for renders resembling the typical scene drawings of individual participants. Our EEG analyses reveal two critical insights on how these individual differences emerge on the neural level. First, personally typical scenes yielded enhanced neural representations from around 200 ms after onset. Second, personally typical scenes were represented in idiosyncratic ways, with reduced dependence on high-level visual features. We interpret these findings in a predictive processing framework, where individual differences in internal models of scene categories formed through experience shape visual analysis in idiosyncratic ways.","PeriodicalId":20589,"journal":{"name":"Proceedings of the Royal Society B: Biological Sciences","volume":"292 2043","pages":"20250272"},"PeriodicalIF":3.8,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11936675/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143711060","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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 new notosuchian crocodyliform from the Early Palaeocene of Patagonia and the survival of a large-bodied terrestrial lineage across the K-Pg mass extinction. 巴塔哥尼亚早古新世发现的一种新的鳄鱼形动物和横跨K-Pg大灭绝的大型陆地谱系的生存。

IF 3.8 1区生物学

Proceedings of the Royal Society B: Biological Sciences Pub Date : 2025-03-01 Epub Date: 2025-03-26 DOI: 10.1098/rspb.2024.1980

Gonzalo Gabriel Bravo, Diego Pol, Juan Martín Leardi, Javier Marcelo Krause, Cecily S C Nicholl, Guillermo Rougier, Philip D Mannion

{"title":"A new notosuchian crocodyliform from the Early Palaeocene of Patagonia and the survival of a large-bodied terrestrial lineage across the K-Pg mass extinction.","authors":"Gonzalo Gabriel Bravo, Diego Pol, Juan Martín Leardi, Javier Marcelo Krause, Cecily S C Nicholl, Guillermo Rougier, Philip D Mannion","doi":"10.1098/rspb.2024.1980","DOIUrl":"10.1098/rspb.2024.1980","url":null,"abstract":"Sebecid notosuchians are the only terrestrial crocodyliforms to survive the Cretaceous-Palaeogene extinction, 66 Ma, which eliminated large-bodied species (above approximately 5 kg) in terrestrial ecosystems. Early sebecid evolution is unclear due to the scarcity of remains from both sides of the boundary. We present the stratigraphically earliest post-extinction notosuchian record, from the lower Palaeocene Salamanca Formation of Patagonia. Tewkensuchus salamanquensis n. gen. n. sp. has unique features, including a skull roof with elevated lateral margins, and an accessory peg and socket articulation between the postorbital and posterior palpebral. Our phylogenetic analysis allies Tewkensuchus with a clade of predatorial crocodyliforms from the Eocene of Europe (and possibly of Africa, as Eremosuchus may also belong to this clade). This clade forms the sister taxon of South American sebecids. We name Sebecoidea for this more inclusive clade of Eurogondwanan notosuchians and suggest that its spatial distribution reflects earlier diversification and dispersal events, which are only partially known. We estimate a body mass of around 300 kg for Tewkensuchus, one of the largest known notosuchians. Phylogenetic optimization of notosuchian body size change reconstructs a Cretaceous-Palaeogene boundary-crossing sebecoidean lineage with an estimated mass between 332 and 443 kg. This provides the first support for the survival of a large-bodied terrestrial vertebrate lineage across the K-Pg boundary.","PeriodicalId":20589,"journal":{"name":"Proceedings of the Royal Society B: Biological Sciences","volume":"292 2043","pages":"20241980"},"PeriodicalIF":3.8,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11936684/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143711056","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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