Monitoring biogenic amines,which are metabolic byproducts of shrimp spoilage,is crucial for assessing food quality.Currently,most detection methods for biogenic amines suffer from limitations such as time-consuming pr...Monitoring biogenic amines,which are metabolic byproducts of shrimp spoilage,is crucial for assessing food quality.Currently,most detection methods for biogenic amines suffer from limitations such as time-consuming procedures,complex operations,and delayed results.Colorimetric analysis techniques have gained attention in recent years due to their advantages of short analysis time,simple operation,and suitability for on-site testing.This study successfully developed a series of colorimetric sensor platforms for biogenic amines by loading the natural active ingredient curcumin(CUR)and its derivative of Boron complex BFCUR onto filter paper and electrospun nanofibre films(ENFs),respectively.By analyzing the color response differences of these sensors upon contact with biogenic amines,the colorimetric sensors with superior detection performance were selected and further applied to the visual monitoring and indication of shrimp spoilage processes.展开更多
This is a correction to:Isabela R R Moraes,Mariana Antunes,Laura S Lopez-Greco,Fernando Jose Zara,Antonio Leao Castilho,Functional reproductive morphology of the snapping shrimp genus Synalpheus Spence Bate,1888(Decap...This is a correction to:Isabela R R Moraes,Mariana Antunes,Laura S Lopez-Greco,Fernando Jose Zara,Antonio Leao Castilho,Functional reproductive morphology of the snapping shrimp genus Synalpheus Spence Bate,1888(Decapoda,Alpheidae),Current Zoology,2024,71,338-352;https:/doi.org/10.1093/cz/zoae053.展开更多
The Ediacaran Period records a significant turning point in the evolution of life on Earth,witnessing the rise to ecological dominance of macroscopic tissue-grade organisms.The Wenghui biota from the Doushantuo Format...The Ediacaran Period records a significant turning point in the evolution of life on Earth,witnessing the rise to ecological dominance of macroscopic tissue-grade organisms.The Wenghui biota from the Doushantuo Formation of South China hosts abundant multicellular algal macrofossils and problematica,some of which might be closely related to taxa from classic Late Ediacaran assemblages from South Australia and the White Sea biota of Russia.However,a lack of well-resolved isotopic age estimates has hampered efforts to constrain the timing of appearance of the Wenghui biota,obfuscating its significance to our understanding of Ediacaran macroevolution in the aftermath of the Snowball Earth events.Here,we present the first SHRIMP zircon U-Pb dating results for samples obtained from a laminated tuff ash layer at the base of the Wenghui biota in the Doushantuo Formation,Jiangkou County,Tongren City,Guizhou Province,China.Our analyses yield an age of 595.4±5.3 Ma for the first appearance of Wenghui biota,suggesting that its appearance postdated that of the Lantian and Weng'an biotas,but preceded that of the Miaohe biota.These newly obtained age proxies offer an independent test of previous isotopic estimates for the age of the Wenghui biota,providing new chronostratigraphic evidence to map the succession of Ediacaran fossil assemblages on the Yangtze Platform during the Doushantuo interval.These data suggest that the Lantian,Weng'an,Wenghui,and Miaohe biotas may record a sequence of biotic assemblages attesting to successive phases in the radiation of Ediacaran macroscopic organisms,particularly macroalgae.展开更多
This study aims to develop a low-energy method for extracting high-purity chitosan from shrimp shell waste.Grounded in the principles of waste valorization,the work addresses the need for alternatives to methods of ch...This study aims to develop a low-energy method for extracting high-purity chitosan from shrimp shell waste.Grounded in the principles of waste valorization,the work addresses the need for alternatives to methods of chitosan extraction that rely on heat and generate significant energy costs.The methodology involved a room-temperature chemical process,comprising deproteinization with NaOH and demineralization with HCl.A notable innovation is the application of the xanthoproteic test—used here for the first time in this context—to monitor protein removal,thus enhancing process control.The extracted chitosan was characterized using FT-IR spectroscopy,and its degree of deacetylation was assessed via titration and FT-IR analysis.Solubility in 1%acetic acid and moisture content were also measured.The results revealed a high degree of deacetylation and excellent solubility,confirming the efficiency of the mild process.This approach offers a pathway for converting marine biowaste into a high-value biopolymer.展开更多
Shrimp farming is a major global aquaculture activity;however,its social and ecological impacts raise sustainability concerns.While previous research has focused on isolated social or environmental aspects of sustaina...Shrimp farming is a major global aquaculture activity;however,its social and ecological impacts raise sustainability concerns.While previous research has focused on isolated social or environmental aspects of sustainability in shrimp farming,integrated assessments of these factors using a social-ecological systems(SES)approach are rare.A framework for assessing the sustainability of shrimp farming-comprising a set of social and ecological indicators-is developed and conceptualized in this study for the first time,using an integrated,interdisciplinary,and empirical SES approach.We first identified key social and ecological indicators and developed a conceptual framework based on SES approach,then surveyed 90 shrimp farms across 3 coastal regions(including Satkhira,Bagerhat,and Cox’s Bazar districts)in Bangladesh.Nearly all farmers in Satkhira(97%)and all in Bagerhat(100%)expressed dissatisfaction with the decreasing pattern of shrimp production and profitability over the last decade.In contrast,nearly all respondents in Cox’s Bazar(97%)reported satisfaction with increasing shrimp production.Except in Cox’s Bazar,equity in labor payment remained a concern for the social sustainability of the shrimp farming system.The changing pattern of shrimp production and profitability,which does not ensure equity,poses a threat to the sustainability of shrimp farming.Most of the surveyed farmers recognized the mutual benefits of mangrove forests and shrimp farming(97%in Satkhira and 77%in Cox’s Bazar),which suggests potential for the development of policy on integrated mangrove-shrimp farming with community-based management.This research could help assess the sustainability of the shrimp farming system and contribute to achieving Sustainable Development Goals 2(zero hunger)and 8(decent work and economic growth).By examining existing practices and developing a novel framework,this study highlights informed decision-making and guides methodological discussion on assessing the sustainability of shrimp farming using the SES approach in coastal regions and different aquaculture systems worldwide.展开更多
Microplastics(MPs)are one of the most concerning pollutants that affects the health and growth of aquatic organisms.We characterized the MPs dispersion in the milli-Q water and seawater,and evaluated the effects of MP...Microplastics(MPs)are one of the most concerning pollutants that affects the health and growth of aquatic organisms.We characterized the MPs dispersion in the milli-Q water and seawater,and evaluated the effects of MPs on the gut epithelial cells of brine shrimp using three sizes of polystyrene(PS)microbeads(0.05,0.5,and 5μm,respectively).Results show that microbeads evenly dispersed in milli-Q water,but exhibited aggregation tendency in seawater associating with the particle size.Apart from a reduced survival rate,we observed the structure changes in the gut epithelium that the smaller size of PS microbeads resulted in an increased reactive oxygen species(ROS)and higher apoptosis-related genes expression.Moreover,exposure to all size of PS microbeads led to increased green fluorescence of J-monomer,indicating the declined mitochondrial membrane potential.Therefore,exposure to PS microbeads led to significantly size-dependent toxicity on brine shrimp.Especially,0.05-μm PS microbeads were more toxic,leading to severe oxidative stress and activation of the p53-Bax-Bcl2 pathway,ultimately resulting in cellular apoptosis and gut damage.These findings are important to understand the mechanism of MPs toxicity and its potential ecological risks to marine aquatic animals.展开更多
基金Supported by the Guangdong-Hong Kong-Macao Joint Laboratory on Micro-Nano Manufacturing Technology,China(No.2021LSYS004)Guangdong Provincial Key Laboratory of Sustainable Biomimetic Materials and Green Energy,China(No.2024B1212010003)。
文摘Monitoring biogenic amines,which are metabolic byproducts of shrimp spoilage,is crucial for assessing food quality.Currently,most detection methods for biogenic amines suffer from limitations such as time-consuming procedures,complex operations,and delayed results.Colorimetric analysis techniques have gained attention in recent years due to their advantages of short analysis time,simple operation,and suitability for on-site testing.This study successfully developed a series of colorimetric sensor platforms for biogenic amines by loading the natural active ingredient curcumin(CUR)and its derivative of Boron complex BFCUR onto filter paper and electrospun nanofibre films(ENFs),respectively.By analyzing the color response differences of these sensors upon contact with biogenic amines,the colorimetric sensors with superior detection performance were selected and further applied to the visual monitoring and indication of shrimp spoilage processes.
文摘This is a correction to:Isabela R R Moraes,Mariana Antunes,Laura S Lopez-Greco,Fernando Jose Zara,Antonio Leao Castilho,Functional reproductive morphology of the snapping shrimp genus Synalpheus Spence Bate,1888(Decapoda,Alpheidae),Current Zoology,2024,71,338-352;https:/doi.org/10.1093/cz/zoae053.
基金supported by the National Natural Science Foundation of China(Nos.42172035 and 41572024)the Fundamental Research Funds for the Liaoning Universities(No.LJ202410166012)+1 种基金Geological Survey Project of China(No.DD20221645)Open Foundation(No.203124)of State Key Laboratory of Palaeobiology and Stratigraphy(Nanjing Institute of Geology and Palaeontology,CAS)。
文摘The Ediacaran Period records a significant turning point in the evolution of life on Earth,witnessing the rise to ecological dominance of macroscopic tissue-grade organisms.The Wenghui biota from the Doushantuo Formation of South China hosts abundant multicellular algal macrofossils and problematica,some of which might be closely related to taxa from classic Late Ediacaran assemblages from South Australia and the White Sea biota of Russia.However,a lack of well-resolved isotopic age estimates has hampered efforts to constrain the timing of appearance of the Wenghui biota,obfuscating its significance to our understanding of Ediacaran macroevolution in the aftermath of the Snowball Earth events.Here,we present the first SHRIMP zircon U-Pb dating results for samples obtained from a laminated tuff ash layer at the base of the Wenghui biota in the Doushantuo Formation,Jiangkou County,Tongren City,Guizhou Province,China.Our analyses yield an age of 595.4±5.3 Ma for the first appearance of Wenghui biota,suggesting that its appearance postdated that of the Lantian and Weng'an biotas,but preceded that of the Miaohe biota.These newly obtained age proxies offer an independent test of previous isotopic estimates for the age of the Wenghui biota,providing new chronostratigraphic evidence to map the succession of Ediacaran fossil assemblages on the Yangtze Platform during the Doushantuo interval.These data suggest that the Lantian,Weng'an,Wenghui,and Miaohe biotas may record a sequence of biotic assemblages attesting to successive phases in the radiation of Ediacaran macroscopic organisms,particularly macroalgae.
文摘This study aims to develop a low-energy method for extracting high-purity chitosan from shrimp shell waste.Grounded in the principles of waste valorization,the work addresses the need for alternatives to methods of chitosan extraction that rely on heat and generate significant energy costs.The methodology involved a room-temperature chemical process,comprising deproteinization with NaOH and demineralization with HCl.A notable innovation is the application of the xanthoproteic test—used here for the first time in this context—to monitor protein removal,thus enhancing process control.The extracted chitosan was characterized using FT-IR spectroscopy,and its degree of deacetylation was assessed via titration and FT-IR analysis.Solubility in 1%acetic acid and moisture content were also measured.The results revealed a high degree of deacetylation and excellent solubility,confirming the efficiency of the mild process.This approach offers a pathway for converting marine biowaste into a high-value biopolymer.
基金Prime Minister Fellowship, Government of the People’s Republic of Bangladesh, for providing a PhD fellowship to Kazi Atiah TAIYEBIGraduate Research and Travel Awards (GRATA) under the School of Social&Environmental Sustainability, University of Glasgow, for supporting the field work in Bangladesh。
文摘Shrimp farming is a major global aquaculture activity;however,its social and ecological impacts raise sustainability concerns.While previous research has focused on isolated social or environmental aspects of sustainability in shrimp farming,integrated assessments of these factors using a social-ecological systems(SES)approach are rare.A framework for assessing the sustainability of shrimp farming-comprising a set of social and ecological indicators-is developed and conceptualized in this study for the first time,using an integrated,interdisciplinary,and empirical SES approach.We first identified key social and ecological indicators and developed a conceptual framework based on SES approach,then surveyed 90 shrimp farms across 3 coastal regions(including Satkhira,Bagerhat,and Cox’s Bazar districts)in Bangladesh.Nearly all farmers in Satkhira(97%)and all in Bagerhat(100%)expressed dissatisfaction with the decreasing pattern of shrimp production and profitability over the last decade.In contrast,nearly all respondents in Cox’s Bazar(97%)reported satisfaction with increasing shrimp production.Except in Cox’s Bazar,equity in labor payment remained a concern for the social sustainability of the shrimp farming system.The changing pattern of shrimp production and profitability,which does not ensure equity,poses a threat to the sustainability of shrimp farming.Most of the surveyed farmers recognized the mutual benefits of mangrove forests and shrimp farming(97%in Satkhira and 77%in Cox’s Bazar),which suggests potential for the development of policy on integrated mangrove-shrimp farming with community-based management.This research could help assess the sustainability of the shrimp farming system and contribute to achieving Sustainable Development Goals 2(zero hunger)and 8(decent work and economic growth).By examining existing practices and developing a novel framework,this study highlights informed decision-making and guides methodological discussion on assessing the sustainability of shrimp farming using the SES approach in coastal regions and different aquaculture systems worldwide.
基金Supported by the Program of Sustainable Development and Protection of Artemia Resources in Yuncheng Salt Lake of China(No.YHYJ-2023005)。
文摘Microplastics(MPs)are one of the most concerning pollutants that affects the health and growth of aquatic organisms.We characterized the MPs dispersion in the milli-Q water and seawater,and evaluated the effects of MPs on the gut epithelial cells of brine shrimp using three sizes of polystyrene(PS)microbeads(0.05,0.5,and 5μm,respectively).Results show that microbeads evenly dispersed in milli-Q water,but exhibited aggregation tendency in seawater associating with the particle size.Apart from a reduced survival rate,we observed the structure changes in the gut epithelium that the smaller size of PS microbeads resulted in an increased reactive oxygen species(ROS)and higher apoptosis-related genes expression.Moreover,exposure to all size of PS microbeads led to increased green fluorescence of J-monomer,indicating the declined mitochondrial membrane potential.Therefore,exposure to PS microbeads led to significantly size-dependent toxicity on brine shrimp.Especially,0.05-μm PS microbeads were more toxic,leading to severe oxidative stress and activation of the p53-Bax-Bcl2 pathway,ultimately resulting in cellular apoptosis and gut damage.These findings are important to understand the mechanism of MPs toxicity and its potential ecological risks to marine aquatic animals.
