Frontiers in Marine Science最新文献_第6页

The implications of artificial substrate material type for sessile fouling communities along the South African east coast

IF 3.7 2区生物学

Frontiers in Marine Science Pub Date : 2025-03-24 DOI: 10.3389/fmars.2025.1511921

Phikolomzi Matikinca, Vuyiswa Zondi

{"title":"The implications of artificial substrate material type for sessile fouling communities along the South African east coast","authors":"Phikolomzi Matikinca, Vuyiswa Zondi","doi":"10.3389/fmars.2025.1511921","DOIUrl":"https://doi.org/10.3389/fmars.2025.1511921","url":null,"abstract":"IntroductionThe growing blue economy and rapid development and urbanisation of coastal areas drive an increase in marine infrastructures. These structures are built with artificial materials and the submerged parts thereof become substrates for colonisation by fouling biota which are often dominated by invasive alien species. However, knowledge on the ecological implications of artificial substrate material for marine biota remains limited, with a notable research gap with respect to Africa.MethodsThis field study assessed how artificial substrate material type might influence sessile fouling communities along the South African east coast. Fiberglass, High-Density Polyethylene (HDPE) and Polyvinyl Chloride (PVC) panels were used as artificial substrates for biofouling community settlement over a period of three months.ResultsDifferences in artificial substrate material type influenced sessile fouling community structure, with fiberglass panels showing a dominant effect than the other two types of materials. Fiberglass panels also supported higher species diversity and percentage cover than the HDPE and PVC panels. Notably, no significant effect of species status (invasive and native) was detected on overall percentage cover.DiscussionThese results highlight the dominant influence of fiberglass materials on sessile assemblages. Overall, this study suggests that the type of material used in artificial marine structures may have ecological implications and therefore, should be included as an important consideration in material selection criteria.","PeriodicalId":12479,"journal":{"name":"Frontiers in Marine Science","volume":"57 1","pages":""},"PeriodicalIF":3.7,"publicationDate":"2025-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143695690","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Decoding growth parameters of small pelagics: a critical examination of model effectiveness with a focus on the European anchovy

IF 3.7 2区生物学

Frontiers in Marine Science Pub Date : 2025-03-24 DOI: 10.3389/fmars.2025.1467442

Margarita Rincón Hidalgo, MariAngeles Gamaza, MaJosé Zúñiga, Fernando Ramos, Jorge Tornero

{"title":"Decoding growth parameters of small pelagics: a critical examination of model effectiveness with a focus on the European anchovy","authors":"Margarita Rincón Hidalgo, MariAngeles Gamaza, MaJosé Zúñiga, Fernando Ramos, Jorge Tornero","doi":"10.3389/fmars.2025.1467442","DOIUrl":"https://doi.org/10.3389/fmars.2025.1467442","url":null,"abstract":"Traditionally, parameters defining life history traits, such as growth, were solely determined through length or age–length databases and then included as fixed in integrated stock assessment models. In current practice, growth parameters are usually estimated within these models (“inside”) and fitted to other datasets. However, for short-lived and small pelagic species, challenges may arise, particularly when there is a high variability in the age–length data or sampling biases are inadequately identified or addressed by these models. To test model effectiveness in capturing the growth dynamics of these species, we propose a comparative analysis following recommended practices for incorporating age–length data into integrated stock assessment models for the specific case of anchovy (Engraulis encrasicolus) stock in the Gulf of Cadiz. The reason is twofold: its significant ecological and economic importance and the need to improve the accuracy of growth parameter estimates used to inform total allowable catch (TAC) scientific advice. The overarching goal of this analysis is to identify the optimal model configuration that provides accurate growth parameter estimates. Our approach shows that random effects can effectively estimate growth in species with high age–length variability. Furthermore, using the obtained estimates as fixed in the stock assessment model reduces computational time and enhances the goodness of fit, resulting in a more efficient model. The results address a significant gap in existing integrated models used for scientific advice, which often do not have the “random effects on parameters” feature. Notably, this framework is widely applicable to other short-lived small pelagic species that typically exhibit a high data variability, offering a valuable solution for improving efficiency and robustness in fisheries management decision-making.","PeriodicalId":12479,"journal":{"name":"Frontiers in Marine Science","volume":"33 1","pages":""},"PeriodicalIF":3.7,"publicationDate":"2025-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143695688","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

A comprehensive review of ship emission reduction technologies for sustainable maritime transport

IF 3.7 2区生物学

Frontiers in Marine Science Pub Date : 2025-03-24 DOI: 10.3389/fmars.2025.1576661

Jiangtao Bai, Yutong Yan, Xinyun Bai

引用次数: 0

The dissection of genotype × tissue interactions in mud crab Scylla paramamosain indicates the sexual differences in parental selection 对泥蟹Scylla paramamosain基因型×组织相互作用的分析表明亲本选择的性别差异

IF 3.7 2区生物学

Frontiers in Marine Science Pub Date : 2025-03-21 DOI: 10.3389/fmars.2025.1573506

Wei Zhang, Zerun Xie, Zilin Zhao, Wenxiao Cui

{"title":"The dissection of genotype × tissue interactions in mud crab Scylla paramamosain indicates the sexual differences in parental selection","authors":"Wei Zhang, Zerun Xie, Zilin Zhao, Wenxiao Cui","doi":"10.3389/fmars.2025.1573506","DOIUrl":"https://doi.org/10.3389/fmars.2025.1573506","url":null,"abstract":"Studying the impact of genotype, tissue type, and their interaction on key sexual factor expression provides valuable insights into the spectrum and consequence of sex differences, particularly for maternal and paternal selection in the breeding of crustaceans. However, the interactions between genotype and tissue types, and their ability to distinguish the sexual differences of mud crab Scylla paramamosain remain unclear. Here we employed additive main effects and multiplicative interaction (AMMI), split-plot analysis (SP), and genotype main effects and genotype × environment interaction (GGE) biplot analysis to examine genotype × tissue interactions related to sexual factors expression of S. paramamosain. SP and AMMI analyses underscored genotype, tissue type, and their interaction can significantly affect sexual factor expression in both female and male crabs. AMMI analysis highlighted that genotype × tissue interactions exerted the most substantial influence on sexual factor expression in the females, while genotype alone played the most critical role in the males. GGE biplot analysis revealed positive correlations between gonad and other tissues, with the ovary and intestine showing the greatest discriminatory power for sexual factors in the females and the males, respectively. Moreover, gene fru2 exhibited relatively high and stable expression in both sexes which would be the preferred breeding index. This comprehensive statistical analysis sheds new light on the intricate relationship between genetics and phenotypes underlying sexual differences in S. paramamosain, offering valuable insights for developing tailored breeding strategies in mud crab parental selection.","PeriodicalId":12479,"journal":{"name":"Frontiers in Marine Science","volume":"27 1","pages":""},"PeriodicalIF":3.7,"publicationDate":"2025-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143672429","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Reassessing the HMS Challenger collection as a late 19th century surface ocean indicator using X-ray micro-computed tomography

IF 3.7 2区生物学

Frontiers in Marine Science Pub Date : 2025-03-21 DOI: 10.3389/fmars.2025.1454260

Stergios D. Zarkogiannis, Thomas J. Wood, C. Giles Miller, Stephen Stukins, Brett Clark

{"title":"Reassessing the HMS Challenger collection as a late 19th century surface ocean indicator using X-ray micro-computed tomography","authors":"Stergios D. Zarkogiannis, Thomas J. Wood, C. Giles Miller, Stephen Stukins, Brett Clark","doi":"10.3389/fmars.2025.1454260","DOIUrl":"https://doi.org/10.3389/fmars.2025.1454260","url":null,"abstract":"Plankton tow net samples collected during the HMS Challenger expedition (1872–1876) have highlighted the potential to provide an unique window into past oceanic conditions. This study aims to assess the suitability of HMS Challenger sediment samples as indicators of late 19th century surface oceanic conditions using X-ray micro-computed tomography (μCT). We used μCT to examine all 21 available Challenger samples from the global ocean that were labelled as ‘tow-net at dredge’, ‘weights’, or ‘trawl’. Our analysis reveals that most samples contain benthic foraminifera shells, along with high concentrations of foraminiferal fragments and detrital quartz grains, while the remaining samples consist of sedimentary material devoid of calcareous microfossils. These findings suggest that these tow-net samples include resuspended bottom sediments rather than exclusively surface-derived material. This distinction is critical because it demonstrates that two types of Challenger tow-net samples exist: surface ocean samples and deep-water tow-net samples that incorporate seafloor material. The surface tow-net samples were recently located and are referenced in this study. These findings highlight the importance of re-evaluating historical sediment collections with modern analytical techniques to ensure accurate paleoceanographic interpretations. Furthermore, the study demonstrates the effectiveness of μCT as a non-destructive tool for sediment analysis, allowing for the detailed examination of collections without the need for washing or wet sieving.","PeriodicalId":12479,"journal":{"name":"Frontiers in Marine Science","volume":"43 1","pages":""},"PeriodicalIF":3.7,"publicationDate":"2025-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143672425","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Automatic deep learning-based pipeline for Mediterranean fish segmentation 基于深度学习的地中海鱼类自动分割管道

IF 3.7 2区生物学

Frontiers in Marine Science Pub Date : 2025-03-21 DOI: 10.3389/fmars.2025.1525524

Caterina Muntaner-Gonzalez, Antonio Nadal-Martínez, Miguel Martin-Abadal, Yolanda Gonzalez-Cid

引用次数: 0

Stay or go? Space and resource use of the great hammerhead (Sphyrna mokarran) off Andros Island, The Bahamas 去还是留？巴哈马安德罗斯岛附近的大锤头鱼（Sphyrna mokarran）对空间和资源的利用

IF 3.7 2区生物学

Frontiers in Marine Science Pub Date : 2025-03-21 DOI: 10.3389/fmars.2025.1544482

T. L. Guttridge, V. Heim, S. Dedman, A. E. Guttridge, S. A. Bain, B. A. Keller, P. Matich

{"title":"Stay or go? Space and resource use of the great hammerhead (Sphyrna mokarran) off Andros Island, The Bahamas","authors":"T. L. Guttridge, V. Heim, S. Dedman, A. E. Guttridge, S. A. Bain, B. A. Keller, P. Matich","doi":"10.3389/fmars.2025.1544482","DOIUrl":"https://doi.org/10.3389/fmars.2025.1544482","url":null,"abstract":"In light of global declines of upper-level marine predators, such as the great hammerhead, (Sphyrna mokarran) a thorough understanding of their behavioral ecology is needed for designing effective management strategies to preserve their key role in maintaining ecosystem functioning, stability, and resilience. Within the northwestern Atlantic, great hammerheads display regional connectivity between the U.S. East Coast and the western edge of The Bahamas, but despite the suggested importance of the Bahamian shark sanctuary towards regional population recovery strategies, relatively few data exist from other areas of The Bahamas. This study used fisheries-independent drumline captures, satellite telemetry, and bulk stable isotope analysis to advance our understanding of the residency, space use, and trophic role of great hammerheads in Andros, the largest island in The Bahamas. We examined movement behaviors and thermal range within the Bahamian Exclusive Economic Zone, and constructed Bayesian mixing models based on carbon, nitrogen, and sulfur isotope ratios to estimate the importance of prey species in the diet of great hammerheads. Our data revealed year-round residency of Andros-caught great hammerheads in Bahamian waters with site-fidelity to and high use of habitats along the reef-drop off and flats of Andros. Great hammerheads predominantly fed on barracuda and small-bodied elasmobranchs in Andros connecting food webs from the pelagic zone to the shoreline. This study expands our knowledge of the ecology of great hammerheads in the northwestern Atlantic and shows that, despite their highly-mobile nature, some individuals reside in the Bahamas year round. These findings suggest the Bahamian shark sanctuary could be more than just a seasonal refuge for this species as previously proposed, and merit further research to assess the conservation value of the sanctuary towards regional rebuilding goals for greathammerheads.","PeriodicalId":12479,"journal":{"name":"Frontiers in Marine Science","volume":"183 1","pages":""},"PeriodicalIF":3.7,"publicationDate":"2025-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143672428","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Variations in the archaeal community in wetlands soils under various hydrologic conditions in the Yellow River Estuary 黄河口不同水文条件下湿地土壤中古生物群落的变化

IF 3.7 2区生物学

Frontiers in Marine Science Pub Date : 2025-03-21 DOI: 10.3389/fmars.2025.1564173

Qingqing Zhao, Jia Jia, Fanyong Song, Tianyuan Li, Wen Zhang, Yujie Huang

{"title":"Variations in the archaeal community in wetlands soils under various hydrologic conditions in the Yellow River Estuary","authors":"Qingqing Zhao, Jia Jia, Fanyong Song, Tianyuan Li, Wen Zhang, Yujie Huang","doi":"10.3389/fmars.2025.1564173","DOIUrl":"https://doi.org/10.3389/fmars.2025.1564173","url":null,"abstract":"Unraveling the relationships between archaea and factors influencing their diversity and distribution is a critical issue in marine ecosystems. Here, the archaeal diversity and community structure in 0 - 20 cm soils from freshwater influenced wetlands (FIW), flooding freshwater and underground seawater influenced wetlands (MIW) and seawater influenced wetlands (SIW) in the Yellow River Nature Reserve were examined utilizing high-throughput sequencing of 16S rRNA gene sequencing. Based on the comparison of the alpha diversity indices, the abundance and diversity of the archaeal community in wetlands with varying hydrologic conditions did not significantly change (p &gt; 0.05), with Thaumarchaeota and Marine_Group_I as the predominant archaeal phylum and class in all the three sampled sites, respectively. Thaumarchaeota, Woesearchaeota and Euryarchaeota constituted more than 90% of the total soil archaeal community in all wetlands. However, beta diversity indices revealed that significantly different distribution patterns of archaea were found among the three wetlands (p &lt; 0.05). And the archaeal community structure in different wetlands varied as the hydrologic conditions changed. Less discriminated archaeal taxa were found in MIW (1 taxon) than in FIW (24 taxa) and SIW (18 taxa). Furthermore, statistical analysis confirmed that the difference in soil salinity caused by different hydrologic conditions was the major driver of archaeal community structure. Overall, this study highlights the role of hydrologic conditions in structuring the soil archaeal community in coastal wetlands.","PeriodicalId":12479,"journal":{"name":"Frontiers in Marine Science","volume":"93 1","pages":""},"PeriodicalIF":3.7,"publicationDate":"2025-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143672426","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Penguin guano suppresses the grazing rate and modifies swimming behavior in Antarctic Krill (Euphausia superba)

IF 3.7 2区生物学

Frontiers in Marine Science Pub Date : 2025-03-20 DOI: 10.3389/fmars.2025.1508287

Nicole Hellessey, Marc Weissburg, David M. Fields

{"title":"Penguin guano suppresses the grazing rate and modifies swimming behavior in Antarctic Krill (Euphausia superba)","authors":"Nicole Hellessey, Marc Weissburg, David M. Fields","doi":"10.3389/fmars.2025.1508287","DOIUrl":"https://doi.org/10.3389/fmars.2025.1508287","url":null,"abstract":"Antarctic krill (Euphausia superba) are a key component of the Antarctic ecosystem linking primary and some secondary production to higher trophic levels including fish, penguins, seals, and whales. Understanding their response to environmental stimuli therefore provides insights into the trophic ecology of Antarctic systems. This laboratory study quantified the influence of penguin guano, a presumptive predator cue, chlorophyll concentration and flow speed on krill swimming behavior. In addition, ingestion rates with and without guano were measured. Such inquiries are necessary to determine if predator risk cues modify krill activities in ways that have consequences for other members of the Antarctic trophic web. Krill often exhibited acute turns when guano was present and varied their swimming speeds more when guano was present. These are both indicators of avoidance behavior to the negative chemical cues represented by penguin guano. Similarly, krill’s ingestion rates dropped significantly for a prolonged period of time in the presence of guano. This decrease in feeding will have impacts on krill’s nutritional value to their predators, prey uptake rates (prey survival) and the sequestration of carbon to the deep ocean as krill decrease their defecation rates. This study supports the hypothesis that krill use chemical signals to detect and behaviorally respond to food and predation risk.","PeriodicalId":12479,"journal":{"name":"Frontiers in Marine Science","volume":"129 1","pages":""},"PeriodicalIF":3.7,"publicationDate":"2025-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143666042","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Temperature orchestrates phytoplankton community and environment in mountain stream for enhancing resource use efficiency

IF 3.7 2区生物学

Frontiers in Marine Science Pub Date : 2025-03-20 DOI: 10.3389/fmars.2025.1565858

Li Ji, Huayong Zhang, Zhongyu Wang, Yonglan Tian, Wang Tian, Zhao Liu

{"title":"Temperature orchestrates phytoplankton community and environment in mountain stream for enhancing resource use efficiency","authors":"Li Ji, Huayong Zhang, Zhongyu Wang, Yonglan Tian, Wang Tian, Zhao Liu","doi":"10.3389/fmars.2025.1565858","DOIUrl":"https://doi.org/10.3389/fmars.2025.1565858","url":null,"abstract":"Warming is a key factor influencing the function of the structure and function of phytoplankton communities. However, the impacts of temperature on phytoplankton resource use efficiency (RUE) in mountain rivers remain poorly understood. Here, the spatiotemporal patterns of phytoplankton community structure (biomass, community composition, and diversity), function (RUE), and the main environmental factors in a high-latitude mountainous stream were investigated to assess how temperature affects the phytoplankton RUE. The results showed that phytoplankton species richness, biomass, and RUE all increased with rising temperature, with species richness significantly higher. There was a shift in the phytoplankton community from dominated by Cyanophyta at lower temperatures to dominated by Cryptophyta at higher temperatures. Phytoplankton RUE was significantly positively correlated to species richness, but no significant relationship was observed between RUE and Pielou’s evenness. Furthermore, redundancy analysis and Mantel tests revealed that water temperature, nutrient (TP, and NH4+-N) and physicochemical variable (flow velocity, and dissolved oxygen) explained 40.40% of the overall variation in phytoplankton RUE. Phytoplankton RUE exhibited stronger responses to environmental variables than phytoplankton biomass or diversity. The results highlighted that temperature directly affected phytoplankton community composition and enhanced RUE by altering environmental conditions and biodiversity. Temperature plays a crucial role in shaping the structure and function of phytoplankton communities in rivers. Our results contribute to the deep understanding of the mechanisms by which temperature influences RUE providing a basis for the sustainable management and conservation of aquatic ecosystems and watersheds.","PeriodicalId":12479,"journal":{"name":"Frontiers in Marine Science","volume":"56 1","pages":""},"PeriodicalIF":3.7,"publicationDate":"2025-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143666043","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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