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Across the five regions, the scale of catches and the number of exploited species varies widely, the Asian and Pacific regions being those with the highest catches and species diversity. Most fisheries are multispecific, or have evolved from single-species to multispecies fisheries as the more valuable species became overexploited. There are many typologies of sea cucumber fisheries, ranging from artisanal, to semi-industrial and industrial. The bulk of the catches are exported to supply the Asian bêche-de-mer market, with China Hong Kong Special Administrative Region (SAR) the main export destination for the totality of countries reviewed. With the exception of some stocks in the temperate areas of the northern hemisphere, sea cucumber stocks are under intense fishing throughout the world. In Latin America and the Caribbean it appears that high valued commercial species have been depleted. In the majority of the countries reviewed in the Africa and Indian Ocean region stocks are overfished. Likewise in the Asian Pacific region the most sought-after species are largely depleted. Despite the fact that sea cucumber fishing is not a traditional activity, a large number of coastal communities have developed a strong dependency on it as alternative source of income. Reconciling the need for conservation with the socio-economic importance that these fisheries have acquired will require effective management efforts, which are currently lacking in many places. The hotspot case studies show for instance that, despite the adoption of management plans in some countries, the lack of enforcement capacity poses considerable constraints on the effectiveness of adopted management measures, besides exacerbating illegal, unreported and unregulated fishing and trade. The papers also discuss some of the factors behind the unsustainable use of sea cucumbers and the role and potential benefits of alternative management measures, such as the Convention on International Trade in Endangered Species of Wild Fauna and Flora (CITES). The lack of capacity to gather the basic information needed for management plans, weak enforcement, the high demand from international markets and the pressure exerted from resource-dependent communities figure high as important factors responsible for the critical status of sea cucumber fisheries worldwide. Authors concur on the need for immediate actions to stop the trend of sequential depletion of species if we are to conserve stocks biodiversity and sustain the ecological, social and economic benefits of these resources. The present document reviews the population status, fishery and trade of sea cucumbers worldwide through the collation and analysis of the available information from five regions, covering known sea cucumber fishing grounds: temperate areas of the Northern Hemisphere; Latin America and the Caribbean; Africa and Indian Ocean; Asia; and Western Central Pacific. In each region a case study of a "hotspot" country or fishery was conducted to highlight critical problems and opportunities for the sustainable management of sea cucumber fisheries. The hotspots are Papua New Guinea, Philippines, Seychelles, Galapagos Islands and the fishery for Cucumaria frondosa of Newfoundland in Canada.
Echinodermata --- Population animale --- Animal population --- Ressource halieutique --- Fishery resources --- Conservation des ressources --- Resource conservation --- Donnée sur les pêches --- fishery data --- Gestion des pêches --- Fishery management --- Commercialisation --- Marketing --- world --- 639.28 --- 339 VISSERIJPRODUCTEN --- Capture of aquatic crustaceans etc. --- VISSERIJPRODUCTEN --- Trepang fisheries. --- Sea cucumber populations. --- Sea cucumbers. --- Zoology and Animal Sciences. Aquaculture and Fisheries --- Fisheries --- Fisheries. --- 639.28 Capture of aquatic crustaceans etc. --- Sea cucumber populations --- Sea cucumbers --- Trepang fisheries --- Beche-de-mer fisheries --- Holothurian fisheries --- Sea cucumber fisheries --- Cucumbers, Sea --- Holothurians --- Holothuroidea --- Trepang --- Holothurian populations --- Populations, Sea cucumber --- Marine invertebrate populations --- Capture of aquatic crustaceans etc --- Stocks
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Trepang fisheries --- Sea cucumbers --- Cucumbers, Sea --- Holothurians --- Holothuroidea --- Echinodermata --- Trepang --- Beche-de-mer fisheries --- Holothurian fisheries --- Sea cucumber fisheries --- Fisheries --- Management --- Conservation --- E-books
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Holothuroidea --- Fishery resources --- Stock assessment --- Marine fisheries --- fishing methods --- Fishery biology --- Fishery management --- Regulations --- world --- Sea cucumbers --- Trepang fisheries --- 639.55 --- Beche-de-mer fisheries --- Holothurian fisheries --- Sea cucumber fisheries --- Fisheries --- Cucumbers, Sea --- Holothurians --- Echinodermata --- Trepang --- Ecology --- Management --- 639.55 Sea cucumbers
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The book largely reflect the structural diversity of echinoderm metabolites including triterpene glycosides and fucosylated chondroitin sulfates, as well as branched fatty acids, di- and triacylglycerols and other lipid classes from the sea cucumbers, polyhydroxysteroids from starfish and different classes of sphingolipids from sea cucumbers and starfish. Finally, the MS-based metabolomic approach, which is very helpful for the estimation of such diversity, is discussed. The materials from the Special Issue also illustrate the biomedical potential of the presented metabolites as cytotoxins and anticoagulants. The in silico approach broadens the possibilities to investigate the mechanisms of the action of membranolytic compounds.
Research & information: general --- Chemistry --- diacylglycerol ether --- 1-O-alkylglyceryl ether --- nutraceutical oils --- bêche-de-mer --- sea cucumber --- Bohadschia argus --- Holothuria (Theelothuria) spinifera --- fucosylated chondroitinsulfates --- fucan sulfates --- anticoagulant activity --- disulfated steroids --- NMR spectra --- starfish --- Pteraster marsippus --- cytotoxic activity --- 3D culture --- Psolus chitonoides --- triterpene glycosides --- chitonoidosides --- triterpene glycosides --- membranolytic action --- hemolytic --- molecular dynamic simulation --- Thyonidium kurilensis --- kurilosides --- polyhydroxysteroids --- steroid glycosides --- lipids --- mass spectrometry --- metabolomics --- metabolomic profiling --- sphingolipids --- ceramides --- cerebrosides --- gangliosides --- sialic acid --- Asteroidea --- Holothuroidea --- biological activity --- neuritogenic activity ---
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Over 70% of the Earth’s surface is covered by oceans and seas, which are massively complex and consist of diverse assemblages of life forms. Marine bacteria, fungi, and other microorganisms develop unique metabolic and physiological capabilities that enable them to survive in extreme habitats and to produce compounds that might not be produced by their terrestrial counterparts. In the last few decades, the systematic investigations of marine/marine-derived microorganisms as sources of novel biologically active agents has exponentially increased. This Special Issue will focus on aspects relating to new bioactive metabolites from marine microorganisms including the isolation, taxonomy, and/or dereplication of microorganisms and the corresponding isolation, structure elucidation, biosynthesis, and/or biological activities of the new compounds. Comprehensive topical review articles relating to marine metabolites will also be considered.
Medicine --- co-culture --- marine microbes --- natural products --- structural diversity --- biological activities --- food allergy --- deep-sea-derived viridicatol --- X-ray single crystal --- intestinal barrier --- mast cell --- calcium influx --- Chlorella --- enzymes --- lipases --- molecular modeling --- sulfated polysaccharides --- antiviral --- SARS-CoV-2 --- docking --- molecular dynamic simulations --- sea cucumber --- bioactivity --- diversity --- microorganism --- polyketides --- alkaloids --- marine-derived fungus --- Penicillium sp. --- indole-diterpenoids --- cytotoxicity --- antibacterial activity --- Leizhou Peninsula --- mangrove soil --- actinomycetia --- antimicrobial activity --- secondary metabolites --- dereplication --- metabolomics tools --- trioxacarcins --- mansouramycins --- isoquinolinequinones --- marine-derived Streptomyces sp. --- n/a
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Over 70% of the Earth’s surface is covered by oceans and seas, which are massively complex and consist of diverse assemblages of life forms. Marine bacteria, fungi, and other microorganisms develop unique metabolic and physiological capabilities that enable them to survive in extreme habitats and to produce compounds that might not be produced by their terrestrial counterparts. In the last few decades, the systematic investigations of marine/marine-derived microorganisms as sources of novel biologically active agents has exponentially increased. This Special Issue will focus on aspects relating to new bioactive metabolites from marine microorganisms including the isolation, taxonomy, and/or dereplication of microorganisms and the corresponding isolation, structure elucidation, biosynthesis, and/or biological activities of the new compounds. Comprehensive topical review articles relating to marine metabolites will also be considered.
co-culture --- marine microbes --- natural products --- structural diversity --- biological activities --- food allergy --- deep-sea-derived viridicatol --- X-ray single crystal --- intestinal barrier --- mast cell --- calcium influx --- Chlorella --- enzymes --- lipases --- molecular modeling --- sulfated polysaccharides --- antiviral --- SARS-CoV-2 --- docking --- molecular dynamic simulations --- sea cucumber --- bioactivity --- diversity --- microorganism --- polyketides --- alkaloids --- marine-derived fungus --- Penicillium sp. --- indole-diterpenoids --- cytotoxicity --- antibacterial activity --- Leizhou Peninsula --- mangrove soil --- actinomycetia --- antimicrobial activity --- secondary metabolites --- dereplication --- metabolomics tools --- trioxacarcins --- mansouramycins --- isoquinolinequinones --- marine-derived Streptomyces sp. --- n/a
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Over 70% of the Earth’s surface is covered by oceans and seas, which are massively complex and consist of diverse assemblages of life forms. Marine bacteria, fungi, and other microorganisms develop unique metabolic and physiological capabilities that enable them to survive in extreme habitats and to produce compounds that might not be produced by their terrestrial counterparts. In the last few decades, the systematic investigations of marine/marine-derived microorganisms as sources of novel biologically active agents has exponentially increased. This Special Issue will focus on aspects relating to new bioactive metabolites from marine microorganisms including the isolation, taxonomy, and/or dereplication of microorganisms and the corresponding isolation, structure elucidation, biosynthesis, and/or biological activities of the new compounds. Comprehensive topical review articles relating to marine metabolites will also be considered.
Medicine --- co-culture --- marine microbes --- natural products --- structural diversity --- biological activities --- food allergy --- deep-sea-derived viridicatol --- X-ray single crystal --- intestinal barrier --- mast cell --- calcium influx --- Chlorella --- enzymes --- lipases --- molecular modeling --- sulfated polysaccharides --- antiviral --- SARS-CoV-2 --- docking --- molecular dynamic simulations --- sea cucumber --- bioactivity --- diversity --- microorganism --- polyketides --- alkaloids --- marine-derived fungus --- Penicillium sp. --- indole-diterpenoids --- cytotoxicity --- antibacterial activity --- Leizhou Peninsula --- mangrove soil --- actinomycetia --- antimicrobial activity --- secondary metabolites --- dereplication --- metabolomics tools --- trioxacarcins --- mansouramycins --- isoquinolinequinones --- marine-derived Streptomyces sp.
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The search for bioactive secondary metabolites from marine organisms has been an active area of research since the 1950s. The distinct biodiversity of the marine environment has afforded a vast array of unique secondary metabolites, many of which possess potent biological activities. This Special Issue of Marine Drugs will highlight recent bioactive marine natural product studies conducted by southern hemisphere scientists on an array of marine organisms.
Medicine --- Sinularia --- Alcyoniidae --- anticancer activity --- lobane --- cembrane --- diterpene --- conotoxins --- ShK toxin --- ion channels --- docking --- molecular dynamics --- potential of mean force --- free energy perturbation --- bioactivity --- biosynthesis --- brominated secondary metabolites --- choline ester --- indole --- sea cucumber --- viscera --- saponins --- mass spectrometry --- MALDI --- ESI --- HPCPC --- triterpene glycosides --- structure elucidation --- bioactive compounds --- marine invertebrate --- Echinodermata --- holothurian --- Cnemidocarpa stolonifera --- taurine amide --- PC3 cell line --- immunofluorescence assay --- thiaplidiaquinone --- Aplidium --- ascidian --- thiazinoquinone --- apoptosis --- Jurkat --- cytotoxicity --- malaria --- farnesyltransferase --- synthesis --- thiaplakortone --- regioisomer --- tricyclic --- natural product scaffold --- X-ray --- crystal --- Plasmodium falciparum --- antiplasmodial --- cephalostatin --- mandelalide --- methicillin resistant Staphylococcus aureus --- MRSA PK --- bisindole alkaloids --- salternamide A (SA) --- HIF-1α --- PI3K/Akt/mTOR --- p42/p44 MAPK --- STAT3 --- cell death
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Marine organisms are a treasure trove for the discovery of novel natural products, and, thus, marine natural products have been a focus of interest for researchers for decades. Some marine bacteria are prolific producers of natural products, occurring either free-living or, as recently shown, in symbiosis with marine animals. Recent advances in DNA sequencing have led to an enormous increase in published bacterial genomes and bioinformatics tools to analyze natural product biosynthetic potential by various “genome mining” approaches. Similarly, analytical NMR and MS methods for the characterization and comparison of metabolomes of natural product producers have advanced. Novel interdisciplinary approaches combine genomics and metabolomics data for accelerated and targeted natural product discovery. This Special Issue invites articles from both genomics- and metabolomics-driven studies on marine bacteria with a focus on natural product discovery and characterization. We particularly welcome articles that combine genomics and metabolomic approaches for the dereplication and characterization of marine bacterial natural products.
Moorena bouillonii --- marine natural products --- chemogeography --- metabolomics --- natural products --- dereplication --- antibiotics --- marine sponges --- plant pathogen --- cyclodepsipeptides --- marine Actinobacteria --- Streptomyces spp. --- antibiotic --- sea cucumber --- HCV --- Actinobacteria --- marine --- Polar --- genomics --- specialised metabolites --- chitin --- chitinase --- chitin degradation machinery --- Pseudoalteromonas --- secondary metabolites --- bacterial natural products --- mass spectrometry --- genome mining --- paired omics --- keratinases --- keratinolytic proteases --- marine-derived Streptomyces --- genomic comparison --- cyanobacteria --- symbionts --- comparative genomics --- biosynthetic gene clusters --- Indonesia --- biodiversity --- novel antibiotics --- drug screening --- bioactivity --- gene cluster networking --- GNPS --- enterococci --- genome-wide analysis --- bacteriocins --- probiotics --- wild marine species --- Neolyngbya --- anticancer --- drug discovery --- South China Sea --- wenchangamide --- Moorea producens --- CuSO4·5H2O assisted --- differential gDNA isolation --- filamentous bacteria --- micrococcin P1 and P2 --- stalked diatoms
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The search for bioactive secondary metabolites from marine organisms has been an active area of research since the 1950s. The distinct biodiversity of the marine environment has afforded a vast array of unique secondary metabolites, many of which possess potent biological activities. This Special Issue of Marine Drugs will highlight recent bioactive marine natural product studies conducted by southern hemisphere scientists on an array of marine organisms.
Sinularia --- Alcyoniidae --- anticancer activity --- lobane --- cembrane --- diterpene --- conotoxins --- ShK toxin --- ion channels --- docking --- molecular dynamics --- potential of mean force --- free energy perturbation --- bioactivity --- biosynthesis --- brominated secondary metabolites --- choline ester --- indole --- sea cucumber --- viscera --- saponins --- mass spectrometry --- MALDI --- ESI --- HPCPC --- triterpene glycosides --- structure elucidation --- bioactive compounds --- marine invertebrate --- Echinodermata --- holothurian --- Cnemidocarpa stolonifera --- taurine amide --- PC3 cell line --- immunofluorescence assay --- thiaplidiaquinone --- Aplidium --- ascidian --- thiazinoquinone --- apoptosis --- Jurkat --- cytotoxicity --- malaria --- farnesyltransferase --- synthesis --- thiaplakortone --- regioisomer --- tricyclic --- natural product scaffold --- X-ray --- crystal --- Plasmodium falciparum --- antiplasmodial --- cephalostatin --- mandelalide --- methicillin resistant Staphylococcus aureus --- MRSA PK --- bisindole alkaloids --- salternamide A (SA) --- HIF-1α --- PI3K/Akt/mTOR --- p42/p44 MAPK --- STAT3 --- cell death
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