Comparative resistome analysis of Aeromonas species in aquaculture reveals antibiotic resistance patterns and phylogeographic distribution DOI Creative Commons
HyeongJin Roh, Dhamotharan Kannimuthu

Environmental Research, Год журнала: 2023, Номер 239, С. 117273 - 117273

Опубликована: Окт. 5, 2023

The overuse of antibiotics in aquaculture drives the emergence multi-drug-resistant bacteria, and antibiotic-resistant genes (ARGs) can be disseminated to other bacteria through vertical- horizontal gene transfer (VGT HGT) under selective pressure. Profiling antibiotic resistome understanding global distribution ARGs constitutes first step developing a control strategy. Hence, this study utilized extensive genomic data from hundreds Aeromonas strains profile patterns explores their association with isolation year, country, species characteristics. Overall, ∼400 genomes were used predict A. salmonicida, hydrophila, veronii, media, sobria. such as sul1, tet(A), tet(D), which display similar proportion positive among species, subjected phylodynamic phylogeographic analyses. More than hundred identified, some exhibited either species-specific or non-species-specific patterns. salmonicida media found have higher strains, might lead more distinct ARG acquisition. ∼25% tet(D) gene(s), but no significant difference was observed by species. Phylogeographic analysis revealed that abundant numbers and/or introduced few East Asian North American countries could spread both adjacent faraway countries. In recent years, proportions these dramatically increased, particularly sourced aquatic environments, suggesting is required aquaculture. findings research offer insights into dissemination ARGs.

Язык: Английский

Environmental impact assessment of fish feed for aquaponic systems to introduce higher phosphorus and potassium in value-added fish sludge DOI
Koushik Roy, Jaroslav Bernas, Radek Gebauer

и другие.

Aquaculture, Год журнала: 2025, Номер unknown, С. 742142 - 742142

Опубликована: Янв. 1, 2025

Язык: Английский

Процитировано

1
Effect of Artemisia annua on anticoccidial action, intestinal microbiota and metabolites of Hu lambs DOI Creative Commons
Shuaiqi Liu,

Shiheng Li,

Shuqi Cheng

и другие.

BMC Veterinary Research, Год журнала: 2025, Номер 21(1)

Опубликована: Янв. 30, 2025

Coccidia are among the primary pathogens causing diarrhea and even fatalities in lambs. With increasing use of chemical drugs to treat coccidiosis, problem drug resistance is becoming more threatening. Therefore, there an urgent need identify novel alternative for treatment lamb coccidia. In this study, effect different doses extraction methods Artemisia annua (A. annua) on anticoccidial activity growth performance was assessed by oocysts output (OPG), fecal index, average daily gain (ADG) new production value experimental High-throughput sequencing technology employed investigate A. intestinal microbiota metabolites lambs afflicted with coccidiosis. The results revealed that all groups exhibited good effects. According soft stool index ADG analysis, Low-dose (AL) alcohol extract (AA) demonstrated a better overall effect. changed after administered. Unclassified_Muribaculaceae significant positive correlation (P < 0.05) negative OPG, although latter not statistically > 0.05). Alistipes displayed 0.05), OPG Additionally, UCG 005 highly 0.01). above AL AA had effective action. could be as suitable probiotic enhance weight lambs, while UCG-005 inhibit Eimeria colonization may serve biomarker predicting risk coccidia outbreaks induced changes gut microbiota, accompanied corresponding metabolites. These differences provide valuable insights subsequent research mechanisms underlying

Язык: Английский

Процитировано

1
Natural laboratories in emerging countries and comparative advantages in science: Evidence from Chile DOI Open Access
José Miguel Aguilera, Felipe Larraín

Review of Policy Research, Год журнала: 2021, Номер 38(6), С. 732 - 753

Опубликована: Сен. 16, 2021

Abstract Entering the knowledge society and mobilizing science technology are critical for emerging countries (ECs) to address important challenges of promote long‐term economic growth. Natural laboratories (NLs) geographical or geophysical singularities that provide comparative advantages leverage ECs scientific research international collaboration. Based on empirical evidence learning experiences from five NLs in Chile, we propose foundations a conceptual framework public policies based their possible implementation ECs. Scientific may local, national, global societal while decentralizing activities, encouraging transdisciplinary territories, anticipating effects climate change, protecting biodiversity promoting partnerships alignment with 2030 Sustainable Development Goals.

Язык: Английский

Процитировано

53
Submerged cage aquaculture of marine fish: A review of the biological challenges and opportunities DOI Creative Commons
Michael Sievers,

Øyvind J. Korsøen,

Fletcher Warren‐Myers

и другие.

Reviews in Aquaculture, Год журнала: 2021, Номер 14(1), С. 106 - 119

Опубликована: Июнь 22, 2021

Abstract Surface‐based cages are the dominant production technology for marine finfish aquaculture industry. However, issues such as extreme weather events, poor environmental conditions, interactions with parasites, and conflicts other coastal users problematic surface‐based aquaculture. Submerged may reduce many of these problems commercial interest in their use has increased. a broad synthesis research into effects submerged culture on fish is lacking. Here, we review current status farming worldwide, outline biological challenges that fundamentally different buoyancy control physiologies face culture, discuss benefits might arise from farming. Our findings suggest closed swim bladders, without be well‐suited to culture. open salmonids, submergence more complex they require access surface air refill bladders maintain buoyancy. Growth welfare bladder can compromised by long periods due complications regulation, but recent addition underwater domes alleviate this issue. Despite advance, greater understanding how couple advantageous conditions improve growth over cycle required if become viable alternative cage

Язык: Английский

Процитировано

47
One of the least disturbed marine coastal ecosystems on Earth: Spatial and temporal persistence of Darwin’s sub‐Antarctic giant kelp forests DOI Creative Commons
Alejandra Mora‐Soto,

Austin Capsey,

Alan M. Friedlander

и другие.

Journal of Biogeography, Год журнала: 2021, Номер 48(10), С. 2562 - 2577

Опубликована: Авг. 1, 2021

Abstract Aim Marine habitats and their dynamics are difficult to systematically monitor, particularly those in remote locations. This is the case with sub‐Antarctic ecosystem of giant kelp Macrocystis pyrifera , which was already noted by Charles Darwin his accounts on Voyage Beagle recorded nautical charts made during that expedition. We combined these other from 19th early 20th centuries surveys conducted 1970s 1980s satellite detection algorithms 1984 2019, analyse distribution through time factors correlate it. Location ecoregions Channels Fjords Southern Chile, Falkland Islands (Malvinas), island South Georgia. Taxon . Methods characterised 309 forests coastal geospatial attributes. Statistically significant variables were included a conditional inference tree predict forest size. Sea surface temperature (SST) records analysed confirm ranges over last four decades. Nautical charts, historical surveys, aerial photogrammetry, unmanned vehicle (UAV) imagery overlaid assess spatial canopies, spanning period 1829–2020. Results Considering extensive natural human caused changes two centuries, this diverse remarkably persistent. found ocean currents wave exposure, geomorphological settings coastline most critical predicting extent forests. Main conclusions have described long‐term ecological persistence vastly under‐studied region offers conceptual biogeographical model supporting global importance proposed 200 years ago (Darwin, 1845). In current context change, need for conservation persistent well‐preserved marine has never been more important.

Язык: Английский

Процитировано

43
Autogenous vaccination in aquaculture: A locally enabled solution towards reduction of the global antimicrobial resistance problem DOI Creative Commons
Andrew C. Barnes, Oleksandra Rudenko,

Matt Landos

и другие.

Reviews in Aquaculture, Год журнала: 2021, Номер 14(2), С. 907 - 918

Опубликована: Ноя. 17, 2021

Abstract Antimicrobial resistance is a global public health crisis with attention focussed on food supply as part of the ‘One Health’ integration veterinary, environmental and health. Aquaculture has been fastest growing livestock sector in recent decades critical to nutritional security many low‐ middle‐income countries (LMIC). With ready access antibiotics limited availability veterinary support, disease control poorly informed, often unrecorded high where aquaculture growth fastest. Vaccination fish LMIC locally produced autogenous vaccines against bacterial diseases may provide driven, cost‐effective means reducing antibiotic use, replicating successes achieved during Norway's industry. Autogenous vaccines, an informed programme, have several advantages terms intellectual property, efficacy flexibility. We consider example importance, including Thailand, Vietnam Indonesia. contrast success antimicrobial reduction Norwegian salmon use Chilean industry are available, finding that regulation, planning, husbandry problems increase incidence severity. identify technical, bureaucratic infrastructural transitions could facilitate implementation vaccination challenging socio‐economic backgrounds. The benefits animal welfare, transboundary biosecurity, local farmer economics, health, favour enabled solution problem resistance.

Язык: Английский

Процитировано

43
Supersizing salmon farms in the coastal zone: A global analysis of changes in farm technology and location from 2005 to 2020 DOI

Phyllis McIntosh,

Luke T. Barrett, Fletcher Warren‐Myers

и другие.

Aquaculture, Год журнала: 2022, Номер 553, С. 738046 - 738046

Опубликована: Фев. 16, 2022

Язык: Английский

Процитировано

28
A global review of protected species interactions with marine aquaculture DOI
Gretchen E. Bath,

Carol Price,

Kenneth L. Riley

и другие.

Reviews in Aquaculture, Год журнала: 2023, Номер 15(4), С. 1686 - 1719

Опубликована: Март 23, 2023

Abstract As marine aquaculture expands around the world, there is increased concern for impacts to protected species. Documented cases of mammal, sea turtle, seabird, and shark interactions with installations do exist but are challenging find. This extensive review summarises state knowledge species fish shellfish installations. Although seaweed was beyond scope this review, some findings finfish may be relevant. The potential farms including habitat exclusion, entanglement, entrapment, collisions, behavioural modifications primary risks posed by facilities operations. In addition, indirect effects from farm operations in areas as well cumulative multiple small or large same general vicinity. Decades innovations best management practices have been driven industry, natural resource managers, conservation organisations, international agreements. useful informing industry planning permitting develop open ocean. work will help advance science synthesising provide managers more insight protect most vulnerable

Язык: Английский

Процитировано

20
Oxygen dynamics in marine productive ecosystems at ecologically relevant scales DOI
Folco Giomi, Alberto Barausse, Alexandra Steckbauer

и другие.

Nature Geoscience, Год журнала: 2023, Номер 16(7), С. 560 - 566

Опубликована: Июль 1, 2023

Язык: Английский

Процитировано

19
Oceanographic processes driving low-oxygen conditions inside Patagonian fjords DOI Creative Commons
Pamela Linford, Iván Pérez‐Santos, Paulina Montero

и другие.

Biogeosciences, Год журнала: 2024, Номер 21(6), С. 1433 - 1459

Опубликована: Март 20, 2024

Abstract. The dissolved oxygen (DO) levels of coastal ocean waters have decreased over the last few decades in part because increase surface and subsurface water temperature caused by climate change, reduction ventilation, stratification eutrophication. In addition, biological human activity zones, bays, estuaries has contributed to acceleration current loss. Patagonian fjord channel system is one world region where low-DO (LDOW, 30 %–60 % saturation) hypoxia conditions (<30 saturation, 2 mL L−1 or 89.2 µmol L−1) are observed. An situ dataset hydrographic biogeochemical variables (1507 stations), collected from sporadic oceanographic cruises between 1970 2021, was used evaluate mechanisms involved presence LDOW hypoxic northern fjords. Results denoted areas with coinciding accumulation inorganic nutrients salty oxygen-poor Equatorial Subsurface Water mass. role evident dominance community respiration gross primary production. This study elucidates physical processes contributing fjords, highlighting significance performing multidisciplinary research combining observational modeling work. approach underscores importance a holistic understanding subject, encompassing both real-world observations insights provided techniques.

Язык: Английский

Процитировано

6