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https://www.readbyqxmd.com/read/28425963/a-multi-platform-optical-sensor-for-in-vivo-and-in-vitro-algae-classification
#1
Chee-Loon Ng, Qing-Qing Chen, Jia-Jing Chua, Harold F Hemond
Differentiation among major algal groups is important for the ecological and biogeochemical characterization of water bodies, and for practical management of water resources. It helps to discern the taxonomic groups that are beneficial to aquatic life from the organisms causing harmful algal blooms. An LED-induced fluorescence (LEDIF) instrument capable of fluorescence, absorbance, and scattering measurements; is used for in vivo and in vitro identification and quantification of four algal groups found in freshwater and marine environments...
April 20, 2017: Sensors
https://www.readbyqxmd.com/read/28388672/toxicity-of-benthic-dinoflagellates-on-grazing-behavior-and-survival-of-the-brine-shrimp-artemia-salina
#2
Raquel A F Neves, Tainá Fernandes, Luciano Neves Dos Santos, Silvia M Nascimento
Harmful algae may differently affect their primary grazers, causing sub-lethal effects and/or leading to their death. The present study aim to compare the effects of three toxic benthic dinoflagellates on clearance and grazing rates, behavioral changes, and survival of Artemia salina. Feeding assays consisted in 1-h incubations of brine shrimps with the toxic Prorocentrum lima, Gambierdiscus excentricus and Ostreopsis cf. ovata and the non-toxic Tetraselmis sp. Brine shrimps fed unselectively on all toxic and non-toxic algal preys, without significant differences in clearance and ingestion rates...
2017: PloS One
https://www.readbyqxmd.com/read/28384119/status-of-water-pollution-in-relation-to-industrialization-in-rajasthan
#3
Ritu Singh Rajput, Sonali Pandey, Seema Bhadauria
India is a large and densely populated country; its economy is largely agricultural. Making the best use of the country's manpower has always posed a challenge. Industrialization could become a dominant component of the economy and displace agriculture. Traditional livelihoods of occupational groups are threatened by the practice of disposing untreated industrial waste into rivers and bodies of water. These uncontrolled disposals impact local natural resources with negative long-term effects. Industrialization is the development of intellectual and financial trade that changes a predominantly rustic culture into a modern one...
April 6, 2017: Reviews on Environmental Health
https://www.readbyqxmd.com/read/28366396/corrigendum-to-rising-temperatures-may-increase-growth-rates-and-microcystin-production-in-tropical-microcystis-species-harmful-algae-50-88-98
#4
Maxine A D Mowe, Cristina Porojan, Feras Abbas, Simon M Mitrovic, Richard P Lim, Ambrose Furey, Darren C J Yeo
No abstract text is available yet for this article.
March 2017: Harmful Algae
https://www.readbyqxmd.com/read/28366395/corrigendum-to-evidence-of-the-bioaccumulation-of-ciguatoxins-in-giant-clams-tridacna-maxima-exposed-to-gambierdiscus-spp-cells-harmful-algae-57-2016-78-87
#5
Mélanie Roué, Hélène Taiana Darius, Sandy Picot, André Ung, Jérôme Viallon, Nabila Gaertner-Mazouni, Manoella Sibat, Zouher Amzil, Mireille Chinain
No abstract text is available yet for this article.
March 2017: Harmful Algae
https://www.readbyqxmd.com/read/28364637/industrial-release-of-fluoroquinolones-fqs-in-the-waste-water-bodies-with-their-associated-ecological-risk-in-pakistan
#6
Luqman Riaz, Tariq Mahmood, Atif Kamal, Mateen Shafqat, Audil Rashid
The unchecked production and use of fluoroquinolones (FQs) for the treatment of infections in human and livestock has increased in Pakistan, which resulted in large amount of antibiotics in water bodies. In the current study, the prevalence and associated ecological risk of three FQs were investigated in waste-water bodies and sludge samples of Kahuta and Hattar industrial zones. The average concentrations of ciprofloxacin (CIP), enrofloxacin (ENR) and levofloxacin (LEV) in the waste-water samples were slightly higher in Kahuta (i...
March 15, 2017: Environmental Toxicology and Pharmacology
https://www.readbyqxmd.com/read/28363081/proposal-and-application-of-a-novel-disseminated-intravascular-coagulation-scoring-system-in-the-florida-manatee-trichechus-manatus-latirostris
#7
Ashley Barratclough, Ray L Ball, Ruth Francis Floyd, Roger L Reep, Bobbi J Conner
  Disseminated intravascular coagulopathy (DIC) is an acquired disorder of hemostasis resulting in activation of the coagulation and fibrinolytic pathways. It is reported secondarily to multiple disease processes and can be associated with increased mortality. Previous research at Tampa's Lowry Park Zoo (LPZ) demonstrated that Florida manatees ( Trichechus manatus latirostris) with cold stress syndrome (CSS) demonstrated thromboembolic disease. The object of this retrospective study was to establish the presence and clinical relevance of DIC in Florida manatees admitted to LPZ for rehabilitation from 07 March 2010 to 15 August 2015...
March 2017: Journal of Zoo and Wildlife Medicine: Official Publication of the American Association of Zoo Veterinarians
https://www.readbyqxmd.com/read/28349870/improvement-of-cyanobacterial-killing-biologically-derived-substances-bdss-using-an-ecologically-safe-and-cost-effective-naphthoquinone-derivative
#8
Jae-Hyoung Joo, Pengbin Wang, Bum Soo Park, Jeong-Hwan Byun, Hye Jeong Choi, Seong Hun Kim, Myung-Soo Han
In previous studies, naphthoquinone (NQ) compounds have been shown to be effective, selective, and ecologically safe algicides for controlling harmful algal blooming species (HABs) or winter bloom species, such as Stephanodiscus hantzschii. However, there are no reports on NQ-based algicides for use with cyanobacterial blooming species. In this study, we developed 31 NQ compounds to investigate algicides for mitigating cyanobacterial blooms. In addition, to better apply these compounds in the field, we reduced the number of production steps to develop a cost-effective algicide...
March 24, 2017: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/28284648/the-relative-risk-and-its-distribution-of-endocrine-disrupting-chemicals-pharmaceuticals-and-personal-care-products-to-freshwater-organisms-in-the-bohai-rim-china
#9
Meng Zhang, Yajuan Shi, Yonglong Lu, Andrew C Johnson, Suriyanarayanan Sarvajayakesavalu, Zhaoyang Liu, Chao Su, Yueqing Zhang, Monika D Juergens, Xiaowei Jin
In this study, the risks to aquatic organisms posed by 12 commonly detected pharmaceuticals and personal care products (PPCPs) and endocrine disrupting chemicals (EDCs) that are extensively used in Bohai coastal region of China were examined. These were linear alkylbenzene sulfonate (LAS), nonylphenol (NP), diethylhexyl phthalate (DEHP), norfloxacin (NOR), sulfamethoxazole (SMX), erythromycin (ERY), bisphenol A (BPA), ofloxacin (OFL), carbamazepine (CBZ), naproxen (NPX), atenolol (ATL) and metoprolol (MET)...
March 8, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28270155/non-invasive-continuous-monitoring-of-pro-oxidant-effects-of-engineered-nanoparticles-on-aquatic-microorganisms
#10
REVIEW
Christian Santschi, Nadia Von Moos, Volodymyr B Koman, Vera I Slaveykova, Paul Bowen, Olivier J F Martin
Engineered nanomaterials (ENMs) are key drivers for the development of highly sophisticated new technologies. As all new attainments, the rapidly increasing used of ENMs raise concerns about their safety for the environment and humans. There is growing evidence showing that if engineered nanomaterials are released into the environment, there is a possibility that they could cause harm to aquatic microorganisms. Among the divers effects triggering their toxicity the ability of ENMs to generate reactive oxygen species (ROS) capable of oxidizing biomolecules is currently considered a central mechanism of toxicity...
March 7, 2017: Journal of Nanobiotechnology
https://www.readbyqxmd.com/read/28262329/toxicological-impacts-of-antibiotics-on-aquatic-micro-organisms-a-mini-review
#11
REVIEW
Pia Välitalo, Antonina Kruglova, Anna Mikola, Riku Vahala
Antibiotics are found globally in the environment at trace levels due to their extensive consumption, which raises concerns about the effects they can have on non-target organisms, especially environmental micro-organisms. So far the majority of studies have focused on different aspects of antibiotic resistance or on analyzing the occurrence, fate, and removal of antibiotics from hospital and municipal wastewaters. Little attention has been paid to ecotoxicological effects of antibiotics on aquatic micro-organisms although they play a critical role in most ecosystems and they are potentially sensitive to these substances...
February 22, 2017: International Journal of Hygiene and Environmental Health
https://www.readbyqxmd.com/read/28251441/carotenogenic-response-in-photosynthetic-organisms-a-colorful-story
#12
REVIEW
Alexei Solovchenko, Konstantin Neverov
Carotenoids are a diverse group of terpenoid pigments ubiquitous in and essential for functioning of phototrophs. Most of the researchers in the field are focused on the primary carotenoids serving light harvesting, photoprotection, and supporting the structural integrity of the photosynthetic apparatus (PSA) within the thylakoid membranes. A distinct group of the pigments functionally and structurally uncoupled from the PSA and accumulating outside of the thylakoids is called secondary carotenoids. Induction of the biosynthesis and massive accumulation of the latter termed as secondary carotenogenesis and carotenogenic response (CR), respectively, is a major though insufficiently studied stress response discovered in many phototrophic organisms ranging from single-celled algae to terrestrial higher plants...
March 1, 2017: Photosynthesis Research
https://www.readbyqxmd.com/read/28230067/life-strategy-and-grazing-intensity-responses-of-brachionus-calyciflorus-fed-on-different-concentrations-of-microcystin-producing-and-microcystin-free-microcystis-aeruginosa
#13
Ye Liang, Kai Ouyang, Xinglan Chen, Yuqi Su, Jiaxin Yang
The occurrence of Microcystis blooms is a worldwide concern due to the numerous adverse effects on zooplankton. We therefore hypothesized that the cyanobacterium Microcystis aeruginosa is harmful to rotifer growth. Population and individual experiments were conducted with the same proportional volumes of Chlorella and Microcystis for given food densities. Life-table parameters, life-history traits, and the grazing intensity of Brachionus calyciflorus were evaluated after they had fed on microcystin-producing and microcystin-free Microcystis, both alone and combined with an edible alga (Chlorella pyrenoidosa), at concentrations of 1 × 10(5), 1 × 10(6), and 1 × 10(7) cells mL(-1)...
February 23, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28208796/recent%C3%A2-trends%C3%A2-in%C3%A2-marine%C3%A2-phycotoxins%C3%A2-from%C3%A2-australian%C3%A2-coastal%C3%A2-waters
#14
Penelope Ajani, D Tim Harwood, Shauna A Murray
Phycotoxins, which are produced by harmful microalgae and bioaccumulate in the  marine food web, are of growing concern for Australia. These harmful algae pose a threat to  ecosystem and human health, as well as constraining the progress of aquaculture, one of the fastest  growing food sectors in the world. With better monitoring, advanced analytical skills and an  increase in microalgal expertise, many phycotoxins have been identified in Australian coastal  waters in recent years...
February 9, 2017: Marine Drugs
https://www.readbyqxmd.com/read/28126690/tio2-based-photocatalytic-disinfection-of-microbes-in-aqueous-media-a-review
#15
REVIEW
P Venkata Laxma Reddy, Beluri Kavitha, Police Anil Kumar Reddy, Ki-Hyun Kim
The TiO2 based photocatalyst has great potential for the disinfection/inactivation of harmful pathogens (such as E.coli in aqueous media) along with its well-known usefulness on various chemical pollutants. The disinfection property of TiO2 is primarily attributed to surface generation of reactive oxygen species (ROS) as well as free metal ions formation. Furthermore, its disinfection capacity and overall performance can be significantly improved through modifications of the TiO2 material. In this review, we provide a brief survey on the effect of various TiO2 materials in the disinfection of a wide range of environmentally harmful microbial pathogens (e...
April 2017: Environmental Research
https://www.readbyqxmd.com/read/28118888/algicidal-and-growth-inhibiting-bacteria-associated-with-seagrass-and-macroalgae-beds-in-puget-sound-wa-usa
#16
Nobuharu Inaba, Vera L Trainer, Yuka Onishi, Ken-Ichiro Ishii, Sandy Wyllie-Echeverria, Ichiro Imai
The algicidal and growth-inhibiting bacteria associated with seagrasses and macroalgae were characterized during the summer of 2012 and 2013 throughout Puget Sound, WA, USA. In 2012, Heterosigma akashiwo-killing bacteria were observed in concentrations of 2.8×10(6)CFUg(-1) wet in the outer organic layer (biofilm) on the common eelgrass (Zostera marina) in north Padilla Bay. Bacteria that inhibited the growth of Alexandrium tamarense were detected within the biofilm formed on the eelgrass canopy at Dumas Bay and North Bay at densities of ∼10(8)CFUg(-1) wet weight...
February 2017: Harmful Algae
https://www.readbyqxmd.com/read/28118887/effects-of-the-bacterial-algicide-iri-160aa-on-cellular-morphology-of-harmful-dinoflagellates
#17
Kaytee L Pokrzywinski, Charles L Tilney, Shannon Modla, Jeffery L Caplan, Jean Ross, Mark E Warner, Kathryn J Coyne
The algicide, IRI-160AA, induces mortality in dinoflagellates but not other species of algae, suggesting that a shared characteristic or feature renders this class of phytoplankton vulnerable to the algicide. In contrast to other eukaryotic species, the genome of dinoflagellates is stabilized by high concentrations of divalent cations and transition metals and contains large amounts of DNA with unusual base modifications. These distinctions set dinoflagellates apart from other phytoplankton and suggest that the nucleus may be a dinoflagellate-specific target for IRI-160AA...
February 2017: Harmful Algae
https://www.readbyqxmd.com/read/28073544/corrigendum-to-cyanobacteria-and-cyanotoxins-in-fishponds-and-their-effects-on-fish-tissue-harmful-algae-55-2016-66-76
#18
Damjana Drobac, Nada Tokodi, Jelena Lujić, Zoran Marinović, Gordana Subakov-Simić, Tamara Dulić, Tamara Važić, Sonja Nybom, Jussi Meriluoto, Geoffrey A Codd, Zorica Svirčev
No abstract text is available yet for this article.
May 2016: Harmful Algae
https://www.readbyqxmd.com/read/28073543/corrigendum-to-production-of-ciguatoxin-and-maitotoxin-by-strains-of-gambierdiscus-australes-g-pacificus-and-g-polynesiensis-dinophyceae-isolated-from-rarotonga-cook-islands-harmful-algae-39-2014-185-190
#19
https://www.readbyqxmd.com/read/28073536/microelectrode-array-mea-platform-as-a-sensitive-tool-to-detect-and-evaluate-ostreopsis-cf-ovata-toxicity
#20
Susanna Alloisio, Valentina Giussani, Mario Nobile, Mariachiara Chiantore, Antonio Novellino
In the last decade, the occurrence of harmful dinoflagellate blooms of the genus Ostreopsis has increased both in frequency and in geographic distribution with adverse impacts on public health and the economy. Ostreopsis species are producers of palytoxin-like toxins (putative palytoxin and ovatoxins) which are among the most potent natural non-protein compounds known to date, exhibiting extreme toxicity in mammals, including humans. Most existing toxicological data are derived from in vivo mouse assay and are related to acute effects of pure palytoxin, without considering that the toxicity mechanism of dinoflagellates can be dependent on the varying composition of complex biotoxins mixture and on the presence of cellular components...
May 2016: Harmful Algae
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