Proceedings of the Royal Society B: Biological Sciences最新文献_第2页

Cryptic diversity patterns of subterranean estuaries. 地下河口的隐秘多样性模式。

IF 3.8 1区生物学

Proceedings of the Royal Society B: Biological Sciences Pub Date : 2024-11-01 Epub Date: 2024-11-13 DOI: 10.1098/rspb.2024.1483

Fernando Calderón-Gutiérrez, Jessica M Labonté, Brett C Gonzalez, Thomas M Iliffe, Luis M Mejía-Ortíz, Elizabeth Borda

{"title":"Cryptic diversity patterns of subterranean estuaries.","authors":"Fernando Calderón-Gutiérrez, Jessica M Labonté, Brett C Gonzalez, Thomas M Iliffe, Luis M Mejía-Ortíz, Elizabeth Borda","doi":"10.1098/rspb.2024.1483","DOIUrl":"10.1098/rspb.2024.1483","url":null,"abstract":"Subterranean estuaries are coastal ecosystems characterized by vertically stratified groundwater. The biota within these ecosystems is relatively understudied due to the inherent difficulty of accessing such extreme environments. The fauna inhabiting these ecosystems is considered vulnerable to extinction, and the presence of cryptic species has major implications for research and conservation efforts. Most species lack molecular data; however, the evaluation of genetic data for some taxa has revealed that undocumented species are common. This study employs molecular species delimitation methods and DNA barcoding through the analysis of publicly and newly generated sequences, including individuals from type localities and non-crustacean phyla; the latter are typically overlooked in biodiversity assessments of subterranean estuaries. We analysed 376 cytochrome c oxidase subunit I (COI) gene sequences and 154 16S rRNA gene sequences. The COI sequences represented 32% of previously described species and 50% of stygobiont species from the Yucatan Peninsula and Cozumel Island, while sequences of the 16S rRNA represented 14% of described species and 22% of stygobionts. Our results revealed cryptic genetic lineages and taxonomic misidentification of species. As several species from these ecosystems are recognized as endangered, the use of molecular approaches will improve biodiversity estimates and highlight overlooked cryptic lineages in need of evaluation of conservation status.","PeriodicalId":20589,"journal":{"name":"Proceedings of the Royal Society B: Biological Sciences","volume":"291 2034","pages":"20241483"},"PeriodicalIF":3.8,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11557235/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142626592","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

Identifying signatures of the earliest benthic bulldozers in emergent subaerial conditions during the colonization of land by animals. 在动物拓殖陆地的过程中，确定海底最早的推土机的特征。

IF 3.8 1区生物学

Proceedings of the Royal Society B: Biological Sciences Pub Date : 2024-11-01 Epub Date: 2024-11-06 DOI: 10.1098/rspb.2024.1629

Zekun Wang, Neil S Davies, Alexander G Liu, Nicholas J Minter, Imran A Rahman

{"title":"Identifying signatures of the earliest benthic bulldozers in emergent subaerial conditions during the colonization of land by animals.","authors":"Zekun Wang, Neil S Davies, Alexander G Liu, Nicholas J Minter, Imran A Rahman","doi":"10.1098/rspb.2024.1629","DOIUrl":"https://doi.org/10.1098/rspb.2024.1629","url":null,"abstract":"The colonization of land by animals was a milestone in the history of life. Approximately 100 million years before full terrestrialization, early animals sporadically traversed emergent subaerial substrates, leaving behind trace fossils recording their activities. However, identifying temporarily emergent environments and determining the affinities, motility and subaerial endurance of the trace-makers, and the timing and magnitude of their impacts on marginal-marine environments, are challenging. Here, we used semi-resolved computational fluid dynamics-discrete element method coupling to simulate trace formation on non-cohesive sediments in submerged and emergent subaerial conditions. This revealed instability-induced morphological signatures that allow us to identify the earliest terrestrial trace fossils. Quantitative metrics enable us to infer that the putative earliest terrestrial trace-makers were molluscs, and dimensional analysis suggests that their subaerial excursions could last at least 15 min. These organisms navigated emergent environments from the early Cambrian (stage 2), tens of millions of years earlier than arthropods. This quantitative paradigm provides new insights into the palaeobiology of the earliest subaerial bulldozers and highlights that mollusc-like animals were among the first ecosystem engineers to enter marginal-marine settings. They may thus have contributed to the establishment of marginal-marine biogeochemical cycles, laying the groundwork for subsequent terrestrialization by other animals.","PeriodicalId":20589,"journal":{"name":"Proceedings of the Royal Society B: Biological Sciences","volume":"291 2034","pages":"20241629"},"PeriodicalIF":3.8,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142583622","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Sharing sleeping sites disrupts sleep but catalyses social tolerance and coordination between groups. 共享睡眠场所会扰乱睡眠，但会促进群体间的社会宽容和协调。

IF 3.8 1区生物学

Proceedings of the Royal Society B: Biological Sciences Pub Date : 2024-11-01 Epub Date: 2024-11-06 DOI: 10.1098/rspb.2024.1330

J Carter Loftus, Roi Harel, Alison M Ashbury, Chase L Núñez, George P Omondi, Mathew Muttinda, Akiko Matsumoto-Oda, Lynne A Isbell, Margaret C Crofoot

{"title":"Sharing sleeping sites disrupts sleep but catalyses social tolerance and coordination between groups.","authors":"J Carter Loftus, Roi Harel, Alison M Ashbury, Chase L Núñez, George P Omondi, Mathew Muttinda, Akiko Matsumoto-Oda, Lynne A Isbell, Margaret C Crofoot","doi":"10.1098/rspb.2024.1330","DOIUrl":"10.1098/rspb.2024.1330","url":null,"abstract":"Sleeping refuges-like other important, scarce and shareable resources-can serve as hotspots for animal interaction, shaping patterns of attraction and avoidance. Where sleeping sites are shared, individuals balance the opportunity for interaction with new social partners against their need for sleep. By expanding the network of connections within animal populations, such night-time social interactions may have important, yet largely unexplored, impacts on critical behavioural and ecological processes. Here, using GPS and tri-axial accelerometry to track the movements and sleeping patterns of wild olive baboon groups (Papio anubis), we show that sharing sleeping sites disrupts sleep but appears to catalyse social tolerance and coordinated movement between groups. Individual baboons experienced shorter and more fragmented sleep when groups shared a sleeping site. After sharing sleeping sites, however, otherwise independent groups showed a strong pattern of spatial attraction, moving cohesively for up to 3 days. Our findings highlight the influence of night-time social interactions on daytime social relationships and demonstrate how a population's reliance on, and need to share, limiting resources can drive the emergence of intergroup tolerance.","PeriodicalId":20589,"journal":{"name":"Proceedings of the Royal Society B: Biological Sciences","volume":"291 2034","pages":"20241330"},"PeriodicalIF":3.8,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11538986/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142583837","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

The logic of conventional and reversed Bateman gradients. 传统和反向贝特曼梯度的逻辑。

IF 3.8 1区生物学

Proceedings of the Royal Society B: Biological Sciences Pub Date : 2024-11-01 Epub Date: 2024-11-06 DOI: 10.1098/rspb.2024.2126

Jussi Lehtonen, Geoff A Parker, Camilla M Whittington

{"title":"The logic of conventional and reversed Bateman gradients.","authors":"Jussi Lehtonen, Geoff A Parker, Camilla M Whittington","doi":"10.1098/rspb.2024.2126","DOIUrl":"10.1098/rspb.2024.2126","url":null,"abstract":"The Bateman gradient is a central concept in sexual selection theory that relates reproductive success to mate number, with important consequences for sex-specific selection. The conventional expectation is that Bateman gradients are steeper in males than females, implying that males benefit more from multiple mating than females do. This claim is supported by much empirical evidence as well as mathematical modelling. However, under some reproductive systems, reversed Bateman gradients are observed, perhaps most notably in syngnathid fishes with male pregnancy. Unlike conventional Bateman gradients, the causal basis of such reversed Bateman gradients has never been modelled mathematically. Here, we present a sex-neutral mathematical model demonstrating how restrictions in capacity for carrying or incubating gametes and embryos (brooding) interact with anisogamy, generating both conventional and reversed Bateman gradients from a single mathematical model. The results clearly demonstrate how anisogamy tends to cause conventional Bateman gradients, but diminishing male brooding capacity under male pregnancy or nesting causes a gradual reversal from conventional to fully 'reversed' Bateman gradients.","PeriodicalId":20589,"journal":{"name":"Proceedings of the Royal Society B: Biological Sciences","volume":"291 2034","pages":"20242126"},"PeriodicalIF":3.8,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11538987/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142583839","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

Character displacement or priority effects: immigration timing can affect community assembly with rapid evolution. 特征位移或优先效应：移民时间会影响快速进化的群落组合。

IF 3.8 1区生物学

Proceedings of the Royal Society B: Biological Sciences Pub Date : 2024-11-01 Epub Date: 2024-11-20 DOI: 10.1098/rspb.2024.2145

Keiichi Morita, Masato Yamamichi

{"title":"Character displacement or priority effects: immigration timing can affect community assembly with rapid evolution.","authors":"Keiichi Morita, Masato Yamamichi","doi":"10.1098/rspb.2024.2145","DOIUrl":"https://doi.org/10.1098/rspb.2024.2145","url":null,"abstract":"Understanding how biological communities assemble in the presence of rapid evolution is becoming an important topic in ecology. Previous studies demonstrated that community assembly can be affected by two types of eco-evolutionary dynamics: evolution-mediated priority effect (EPE) and ecological character displacement (ECD). In EPE, early-arriving species prevent colonization of late-arriving species via local adaptation (i.e. community monopolization), whereas ECD promotes species coexistence by niche partitioning. Researchers tended to discuss the two processes separately, but it should be possible for those processes to operate in the same system depending on various conditions. Here, we developed a theoretical framework that integrates the two processes by using a simple two-species competition model with eco-evolutionary feedback. We revealed that, when an early-arriving species evolves, the difference in immigration timing between the early-arriving and a late-arriving species can be a key parameter. When the difference is small, ECD occurs because insufficient local adaptation of the early-arriving species allows colonization of the late-arriving species. When the difference is large, however, EPE occurs because niche pre-emption by local adaptation of the early-arriving species prevents colonization of the late-arriving species. Further theoretical and empirical studies will be important to better understand eco-evolutionary community assembly with ECD and EPE.","PeriodicalId":20589,"journal":{"name":"Proceedings of the Royal Society B: Biological Sciences","volume":"291 2035","pages":"20242145"},"PeriodicalIF":3.8,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142676535","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Parasite scars: the impact of salmon lice injury on sea trout populations. 寄生虫疤痕：鲑虱伤害对海鳟种群的影响。

IF 3.8 1区生物学

Proceedings of the Royal Society B: Biological Sciences Pub Date : 2024-11-01 Epub Date: 2024-11-13 DOI: 10.1098/rspb.2024.1480

Knut Wiik Vollset, Robert J Lennox, Gunnar Bekke Lehmann, Bjørnar Skår, Ivar Ulgenes, Helge Skoglund

{"title":"Parasite scars: the impact of salmon lice injury on sea trout populations.","authors":"Knut Wiik Vollset, Robert J Lennox, Gunnar Bekke Lehmann, Bjørnar Skår, Ivar Ulgenes, Helge Skoglund","doi":"10.1098/rspb.2024.1480","DOIUrl":"10.1098/rspb.2024.1480","url":null,"abstract":"Spillback effects of the parasitic salmon louse from fish farms to wild fish are a critical environmental concern for countries with wild salmon. The ectoparasitic louse causes significant physical and physiological damage to wild salmonids that probably have long-term impacts on individuals and population dynamics. However, empirical links between injuries and abundance of lice have not been established in the wild. This study establishes a strong association between dorsal fin injuries in wild sea trout (Salmo trutta) and infestation with salmon lice at a marine site in Norway. We further assessed the prevalence of such injuries on sea trout returning to spawning grounds from snorkelling observations in 16 rivers in Hardangerfjord, western Norway, from 2007 to 2021. The prevalence of injuries decreased with distance from the fjord outlet, from approximately 70% in middle and outer parts to approximately 10% in the inner parts. Additionally, a negative correlation was found between sea trout population size and the proportion of the population with dorsal fin damage. The results demonstrate that salmon lice inflict high levels of injury on significant portions of sea trout populations in areas with intensive fish farming, leading to poorer population status in affected populations.","PeriodicalId":20589,"journal":{"name":"Proceedings of the Royal Society B: Biological Sciences","volume":"291 2034","pages":"20241480"},"PeriodicalIF":3.8,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11557225/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142626615","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

Stress in the social environment: behavioural and social consequences of stress transmission in bird flocks. 社会环境中的压力：鸟群中压力传递的行为和社会后果。

IF 3.8 1区生物学

Proceedings of the Royal Society B: Biological Sciences Pub Date : 2024-11-01 Epub Date: 2024-11-13 DOI: 10.1098/rspb.2024.1961

Hanja B Brandl, Damien R Farine

{"title":"Stress in the social environment: behavioural and social consequences of stress transmission in bird flocks.","authors":"Hanja B Brandl, Damien R Farine","doi":"10.1098/rspb.2024.1961","DOIUrl":"10.1098/rspb.2024.1961","url":null,"abstract":"The stress response helps individuals cope with challenges, yet how individual stress levels shape group-level processes and the behaviour of other group members has rarely been explored. In social groups, stress responses can be buffered by others or transmitted to members that have not even experienced the stressor first-hand. Stress transmission, in particular, can have profound consequences for the dynamics of social groups and the fitness of individuals therein. We experimentally induced chronic stress within replicated colonies of zebra finches and used fine-scale tracking to observe the consequences of stress-exposed colony members for the behaviour and reproduction of non-manipulated colony members. Non-manipulated individuals in colonies containing stress-exposed individuals exhibited reduced activity, and fewer-but more differentiated-social bonds. These effects were stronger in colonies with a greater proportion of stress-treated individuals, demonstrating that the impact of stressors can reach beyond directly exposed individuals by also affecting their group mates. We found no evidence that socially transmitted stress affected reproduction or long-term physiological measurement in unmanipulated birds, even though the stress-exposed demonstrators laid slightly fewer eggs and showed stressor-dependent changes in feather corticosterone. Social transmission of these effects, if occurring at all, might be more subtle.","PeriodicalId":20589,"journal":{"name":"Proceedings of the Royal Society B: Biological Sciences","volume":"291 2034","pages":"20241961"},"PeriodicalIF":3.8,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11558247/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142626617","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

Migratory birds can extract positional information from magnetic inclination and magnetic declination alone. 候鸟可以仅从磁倾角和磁倾角中获取位置信息。

IF 3.8 1区生物学

Proceedings of the Royal Society B: Biological Sciences Pub Date : 2024-11-01 Epub Date: 2024-11-13 DOI: 10.1098/rspb.2024.1363

Florian Packmor, Dmitry Kishkinev, Thomas Zechmeister, Henrik Mouritsen, Richard A Holland

{"title":"Migratory birds can extract positional information from magnetic inclination and magnetic declination alone.","authors":"Florian Packmor, Dmitry Kishkinev, Thomas Zechmeister, Henrik Mouritsen, Richard A Holland","doi":"10.1098/rspb.2024.1363","DOIUrl":"https://doi.org/10.1098/rspb.2024.1363","url":null,"abstract":"Migratory birds are able to navigate over great distances with remarkable accuracy. The mechanism they use to achieve this feat is thought to involve two distinct steps: locating their position (the 'map') and heading towards the direction determined (the 'compass'). For decades, this map-and-compass concept has shaped our perception of navigation in animals, although the nature of the map remains debated. However, some recent studies suggest the involvement of the Earth's magnetic field in the map step. Here, we tested whether migratory songbirds, Eurasian reed warblers (Acrocephalus scirpaceus), can determine their position based on two magnetic field components that are also associated with direction finding, i.e. magnetic inclination and magnetic declination. During a virtual magnetic displacement experiment, the birds were exposed to altered magnetic inclination and magnetic declination values that would indicate a displacement from their natural migratory corridor, but the total intensity of the field remained unchanged, creating a spatial mismatch between these components. The response was a change in the birds' migratory direction consistent with a compensatory re-orientation. This suggests that birds can extract positional as well as directional information from these cues, even when they are in conflict with another component of the magnetic field. It remains to be seen whether birds use the total intensity of Earth's magnetic field for navigation.","PeriodicalId":20589,"journal":{"name":"Proceedings of the Royal Society B: Biological Sciences","volume":"291 2034","pages":"rspb20241363"},"PeriodicalIF":3.8,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142626613","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Structural disorder facilitates future memory decisions. 结构紊乱有利于未来的记忆决策。

IF 3.8 1区生物学

Proceedings of the Royal Society B: Biological Sciences Pub Date : 2024-11-01 Epub Date: 2024-11-13 DOI: 10.1098/rspb.2024.2154

Michaela Bocheva

{"title":"Structural disorder facilitates future memory decisions.","authors":"Michaela Bocheva","doi":"10.1098/rspb.2024.2154","DOIUrl":"10.1098/rspb.2024.2154","url":null,"abstract":"It is well known that perception and cognition are systematically biased towards the recent past. That is, a decision about the current state of a perceptual feature (e.g. orientation) can be predicted based on a recent state of the same feature. Such serial dependencies have been demonstrated across perception, memory and cognition, and have been jointly attributed to an adaptive mechanism meant to promote stability in a constantly changing environment. Here, we argue that this adaptive mechanism prioritizes past information on the most basic structural level, such that the strength of the attractive bias is modulated by the amount of structural coherence in stimuli. We presented visual patterns of varied structural disorder (randomness) prior to a recognition memory decision that required discriminating between trained and novel visual patterns. Both highly generic geometrical shapes and completely random patterns failed to elicit an effect on decisional response times. By contrast, we found recognition memory decisions to be significantly faster in trials where the irrelevant probe pattern was 'optimally' random. This result suggests that decision-making is influenced by the past's informational worth. More importantly, it suggests an optimal amount of uncertainty to facilitate future decisions.","PeriodicalId":20589,"journal":{"name":"Proceedings of the Royal Society B: Biological Sciences","volume":"291 2034","pages":"20242154"},"PeriodicalIF":3.8,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11557226/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142626632","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

Shift in diet composition of a riparian predator along a stream pollution gradient. 河岸食肉动物的食物组成随溪流污染梯度的变化而变化。

IF 3.8 1区生物学

Proceedings of the Royal Society B: Biological Sciences Pub Date : 2024-11-01 Epub Date: 2024-11-20 DOI: 10.1098/rspb.2024.2104

Maike Huszarik, Alexis P Roodt, Teagan Wernicke, Moritz Link, Eva Lima-Fernandes, David Åhlén, Verena C Schreiner, Ralf Schulz, Peter Hambäck, Martin H Entling

{"title":"Shift in diet composition of a riparian predator along a stream pollution gradient.","authors":"Maike Huszarik, Alexis P Roodt, Teagan Wernicke, Moritz Link, Eva Lima-Fernandes, David Åhlén, Verena C Schreiner, Ralf Schulz, Peter Hambäck, Martin H Entling","doi":"10.1098/rspb.2024.2104","DOIUrl":"https://doi.org/10.1098/rspb.2024.2104","url":null,"abstract":"Terrestrial insectivores in riparian areas, such as spiders, can depend on emergent aquatic insects as high-quality prey. However, chemical pollution entering streams from agricultural and urban sources can alter the dynamics and composition of aquatic insect emergence, which may also affect the riparian food web. Few studies have examined the effects of stressor-induced alterations in aquatic insect emergence on spiders, especially in terms of chemical pollution and diet composition. We used DNA metabarcoding of gut content to describe the diet of Tetragnatha montana spiders collected from 10 forested streams with differing levels of pesticide and wastewater pollution. We found that spiders consumed more Chironomidae and fewer other aquatic Diptera, including Tipulidae, Ptychopteridae and Culicidae, at more polluted streams. Pollution-related effects were mainly observed in the spider diet, and were not significant for the number nor composition of flying insects trapped at each site. Our results indicate that the composition of riparian spider diets is sensitive to stream pollution, even in the absence of a change in the overall proportion of aquatic prey consumed. A high reliance on aquatic prey at polluted streams may give spiders an increased risk of dietary exposure to chemical pollutants retained by emergent insects.","PeriodicalId":20589,"journal":{"name":"Proceedings of the Royal Society B: Biological Sciences","volume":"291 2035","pages":"20242104"},"PeriodicalIF":3.8,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142676670","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0