A5022679558- Marine Toxins and Detection Methods
- Marine and coastal ecosystems
- Aquatic Ecosystems and Phytoplankton Dynamics
- Environmental Toxicology and Ecotoxicology
- Protist diversity and phylogeny
- Microbial Community Ecology and Physiology
- Marine Biology and Ecology Research
- Physiological and biochemical adaptations
- Plant and fungal interactions
- Neuroscience of respiration and sleep
- Coral and Marine Ecosystems Studies
- Marine Bivalve and Aquaculture Studies
- Venomous Animal Envenomation and Studies
- Graphene and Nanomaterials Applications
- Crustacean biology and ecology
- Polyamine Metabolism and Applications
- Marine Invertebrate Physiology and Ecology
- Marine Biology and Environmental Chemistry
- Vibrio bacteria research studies
- Mycotoxins in Agriculture and Food
- Nanoparticles: synthesis and applications
- Electrochemical Analysis and Applications
- Advanced Nanomaterials in Catalysis
- Aquaculture Nutrition and Growth
- Connexins and lens biology
University of Tasmania
2011-2024
Institute for Marine and Antarctic Studies
2011-2020
UNSW Sydney
2012
Universidad Nacional Autónoma de México
2009
The short-term toxicity of citrate-stabilized silver nanoparticles (AgNPs) and ionic Ag(I) to the ichthyotoxic marine raphidophyte Chattonella marina has been examined using fluorometric indicator alamarBlue. Aggregation dissolution AgNPs occurred after addition GSe medium while uptake dissolved in presence C. marina. Based on total mass, was much higher for than AgNPs. Cysteine, a strong ligand, completely removed inhibitory effects metabolic activity marina, suggesting that due release...
Quantification of the role reactive oxygen species, phycotoxins and fatty acids in fish toxicity by harmful marine microalgae remains inconclusive. An vitro gill (from rainbow trout Oncorhynchus mykiss) assay was used to simultaneously assess effect superoxide dismutase, catalase lactate dehydrogenase enzymatic activities caused seven species ichthyotoxic (Chattonella marina, Fibrocapsa japonica, Heterosigma akashiwo, Karenia mikimotoi, Alexandrium catenella, Karlodinium veneficum,...
The marine dinoflagellate Margalefidinium polykrikoides (=Cochlodinium polykrikoides) is a harmful species that has affected aquaculture, fisheries and tourism activities. It produces reactive oxygen (ROS), as well hemolytic neurotoxic-like substances, have been associated with the mortality of organisms. tropical subtropical distribution, capacity to form cysts. economic impacts for aquaculture industries are high, mainly Asian countries. In Latin America no economical estimates this...
Despite salmon farmers suffering the worst damage from a harmful algal bloom in Chile's history (US$800M) due to massive outbreak of dictyochophyte Pseudochattonella 2016 (~7000-20,000cellsml-1), effect environmental drivers and potency lytic toxins produced by local clones this species remain still largely unexplored. Based on drastic oceanographic anomalies observed Chilean fjords during 2016-El Niño"Godzilla"event, role salinity(15to35psu) cell growth cytotoxicity was studied culturing,...
Climate change has compromised large areas of coral reefs around the world due to raising temperatures and arrival heat waves. These conditions create an uncontrolled production so-called reactive oxygen species (ROS) that attack tissues corals, as well loss symbiont microalgae, which are main source energy coral, leading mass bleaching events death. Some microalgae produce ROS scavengers de novo, such antioxidants, can destroy these harmful compounds. Additionally, many antioxidants...
Lipid profiles of three strains (Mexico, Australia, Japan) Chattonella marina (Subrahmanyan) Hara et Chihara were studied under defined growth (phosphate, light, and phase) harvest (intact ruptured cells) conditions. Triacylglycerol levels always <2%, sterols <7%, free fatty acids varied between 2 33%, polar lipids the most abundant lipid class (>51% total lipids). The major in C. palmitic (16:0), eicosapentaenoic (EPA, 20:5ω3), octadecatetraenoic (18:4ω3), myristic (14:0), palmitoleic...
MEPS Marine Ecology Progress Series Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout JournalEditorsTheme Sections 426:213-224 (2011) - DOI: https://doi.org/10.3354/meps09036 Ichthyotoxicity of gymnodinioid dinoflagellates: PUFA and superoxide effects in sheepshead minnow larvae rainbow trout gill cells Ben D. Mooney1,*, Juan José Dorantes-Aranda1, Allen R. Place2, Gustaaf M. Hallegraeff1 1University Tasmania, Institute...
Clay minerals have previously been used to mitigate algal blooms because of their ability flocculate cells or remove nutrients, but also offer considerable potential ichthyotoxins. When a barramundi farm in tropical Australia suffered substantial fish mortalities due bloom the ichthyotoxic haptophyte Prymnesium parvum, manager decided manipulate pond water N:P ratios through removal phosphorus by addition lanthanum-modified bentonite clay (Phoslock™) successfully effects. We conducted...
Abstract The dinoflagellate Cochlodinium polykrikoides isolated from Bahía de La Paz, Gulf of California, showed an important short‐term toxic effect on the spotted rose snapper Lutjanus guttatus . This microalga was able to decrease fish liver catalase activity and lipid peroxidation. Fish exposed live dinoflagellates developed abnormal mucus secretion gills that directly related algal cell concentration. Hepatic inhibition increase in occurred when were 2 × 10 6 cells L –1 C. Lipid...
Mycotoxins are emerging toxins in the marine environment, which can co-occur with algal to exert synergistic or antagonistic effects for human seafood consumption. The current study assesses cytotoxicity of toxin okadaic acid, shellfish, and dust storm-associated mycotoxins alone combination on intestinal (HT-29) neuroblastoma (SH-SY5Y) cell lines. Based calculated IC50 (inhibitory concentration 50%) values, their own exhibited increased order sydowinin A < B << patulin alamethicin...
The ichthyotoxic dinoflagellate Karlodinium veneficum has a worldwide distribution and produces highly potent lytic toxins (karlotoxins) that have been associated with massive fish kill events in coastal environments. capacity of K. to gain energy from photosynthesis as well phagotrophy enables cellular maintenance, growth dispersal under broad range environmental conditions. Coastal ecosystems are dynamic light the prevailing physicochemical conditions, such seawater carbonate speciation...
Paralytic shellfish toxins (PSTs) in bivalve molluscs represent a public health risk and are controlled via compliance with regulatory limit of 0.8 mg saxitoxin (STX)⋅2HCl equivalents per kilogram meat (eq/kg). Shellfish industries would benefit from the use rapid immunological screening tests for PSTs to be used regulation, but date none have been fully validated. An interlaboratory study involving 16 laboratories was performed determine suitability Neogen test detect mussels oysters....
Introduction Harmful algal bloom (HAB)-forming species and populations exhibit substantial intraspecific functional trait variation, which can confer eco-evolutionary advantages. Phenotypic variability among buffer the immediate detrimental effects of environmental fluctuations, with more diverse expected to survive changing conditions efficiently than their uniform counterparts. Methods In February 2014, a mixed fish-killing dinoflagellate occurred in temperate waters Coffin Bay, South...