Results 61 to 70 of about 1,542 (206)

Survey of Scytonema (Cyanobacteria) and associated saxitoxins in the littoral zone of recreational lakes in Canterbury, New Zealand

, 2012
The recent identification of saxitoxin-producing Scytonema cf. crispum triggered a survey of metaphyton and periphyton for Scytonema spp. in 34 high-use recreational lakes across Canterbury, New Zealand. Scytonema was observed in 10 of the lakes surveyed.
Wilks, Taryn, Williamson, Wendy M., Kelly, David, Wood, Susanna A., Gaw, Sally K., Smith, Francine M. J., Broady, Paul A.   +6 more
core   +1 more source

Limnofasciculus delicatus (Coleofasciculaceae, Coleofasciculales), a Novel Mat‐Forming Cyanobacterium From Shenandoah River, Virginia, USA

Environmental Microbiology Reports, Volume 18, Issue 3, June 2026.
A novel mat‐forming benthic freshwater cyanobacterium, Limnofasciculus delicatus, is described based on morphological, phylogenetic and genomic evidence from the North and South Forks of the Shenandoah River. Although Limnofasciculus delicatus lacks biosynthetic gene clusters associated with the production of known cyanotoxins, it occurs in association
Rosalina Stancheva, Cecilio Valadez‐Cano, Benoit Van Aken, Gordon M. Selckmann, Janice Lawrence, A. Bruce Cahoon   +5 more
wiley   +1 more source

Co-Occurrence of Cyanotoxins and Phycotoxins in One of the Largest Southeast Asian Brackish Waterbodies: A Preliminary Study at the Tam Giang—Cau Hai Lagoon (Vietnam)

Limnological Review
The Tam Giang-Cau Hai lagoon (TGCH) in Thua Thien Hue province (Vietnam) is a marsh/lagoon system and ranks among the largest waterbodies in Southeast Asia. It plays a significant role in terms of both socio-economic and environmental resources. However,
Devleena Sahoo, Ngoc Khanh Ni Tran, Thi Gia-Hang Nguyen, Thi Thu Hoai Ho, Thi Thuy Hang Phan, Duong Thu Huong Hoang, Ngo Huu Binh, Thi Thu Lien Nguyen, Luong Quang Doc, Noureddine Bouaïcha, Tri Nguyen-Quang   +10 more
doaj   +1 more source

Phytoplankton growth and potential cyanotoxin production differ in response to nitrogen and phosphorus amendments in late summer communities from Kabetogama Lake (Minnesota, United States)

Journal of Phycology, Volume 62, Issue 3, Page 883-903, June 2026.
Abstract Cyanotoxins such as microcystin (MC), cylindrospermopsin, and saxitoxin are secondary metabolites that are rich in nitrogen (N). Most cyanobacteria grow best on reduced inorganic N (ammonium, NH4), but when NH4 is absent, cyanobacteria can activate physiological pathways to process other N forms (e.g., nitrate; NO3).
James H. Larson, Ryan P. Maki, Sean W. Bailey, Victoria G. Christensen, Keith A. Loftin, Erin A. Stelzer, James C. Smith, Seth A. McWhorter   +7 more
wiley   +1 more source

Evaluation of the study carried out by ANSES on the effectiveness of sanitary shucking of queen scallops (Aequipecten opercularis) contaminated by okadaic acid toxins

EFSA Journal, Volume 24, Issue 6, June 2026.
Abstract Following a request from the European Commission, EFSA evaluated the effectiveness of sanitary shucking of queen scallops (Aequipecten opercularis) contaminated with okadaic acid (OA) group toxins. Specifically, EFSA was tasked to evaluate a study conducted by the French Agency for Food, Environmental and Occupational Health & Safety (ANSES ...
European Food Safety Authority (EFSA), Ana Gago‐Martínez, Arjen Gerssen, Isabelle P. Oswald, Jose Cortiñas Abrahantes, Anita Radovnikovic, Salomon Sand   +6 more
wiley   +1 more source

A Fresh Perspective on Cyanobacterial Paralytic Shellfish Poisoning Toxins: History, Methodology, and Toxicology

Marine Drugs
Paralytic shellfish poisoning toxins (PSPTs) are a class of neurotoxins most known for causing illness from consuming contaminated shellfish. These toxins are also present in freshwater systems with the concern that they contaminate drinking and ...
Zacharias J. Smith, Kandis M. Arlinghaus, Gregory L. Boyer, Cathleen J. Hapeman   +3 more
doaj   +1 more source

Environmental governance in the face of collapse: The case of Acapulco, Mexico, between tourist splendour and ecological risk

Ecological Solutions and Evidence, Volume 7, Issue 2, April–June 2026.
Underwater clean‐up efforts in Acapulco Bay reveal the visible consequences of chronic coastal pollution. This study shows how Environmental Risk Assessments (ERAs) can integrate scientific evidence, regulatory frameworks and practitioner experience to identify pollution sources and guide more effective coastal governance in cities of the Global South.
Sinuhé Hernández Márquez, María Eugenia Zamudio‐Resendiz, María Luisa Núñez Resendiz, Montserrat Murrieta Alarcón, Alejandro Federico Alva Martínez, Laura Margarita Márquez Valdelamar, Nelly María López Ortiz, Carlos Alberto Sandoval Navarrete, Alberto Pérez Rojas, Alma Socorro Sobrino Figueroa, Yanin Islas Barrios, Ricardo Caballero Fuentes, Nataly Graciela Santos Bustos, Abel Sentíes   +13 more
wiley   +1 more source

Marine Toxins as Pharmaceutical Treasure Troves: A Focus on Saxitoxin Derivatives from a Computational Point of View

Molecules
This work highlights the significant potential of marine toxins, particularly saxitoxin (STX) and its derivatives, in the exploration of novel pharmaceuticals.
Norma Flores-Holguín, Joan S. Salas-Leiva, Erick J. Núñez-Vázquez, Dariel Tovar-Ramírez, Daniel Glossman-Mitnik   +4 more
doaj   +1 more source

Saxitoxin Poisoning in Green Turtles (Chelonia mydas) Linked to Scavenging on Mass Mortality of Caribbean Sharpnose Puffer Fish (Canthigaster rostrata-Tetraodontidae)

Frontiers in Veterinary Science, 2019
Fish within the family Tetraodontidae are potential sources of both endogenous tetrodotoxins (TTXs) and dietary derived saxitoxins (STXs). Ingestion of fish tissues containing these toxins by other vertebrates can lead to severe illness and death.
Rocío González Barrientos, Gabriela Hernández-Mora, Fernando Alegre, Theresa Field, Leanne Flewelling, Sara McGrath, Jonathan Deeds, Yajaira Salazar Chacón, Karla Rojas Arrieta, Emilia Calvo Vargas, Karen Berrocal Artavia, Brian A. Stacy   +11 more
doaj   +1 more source

Storm water inflow to Oranga Lake, University of Waikato Hamilton Campus [PDF]

, 2014
Oranga Lake is one of three constructed lakes located on the University of Waikato Hamilton campus. It has had persistent problems of high turbidity, prolific seasonal macrophyte growths and phytoplankton blooms.
Tempero, Grant Wayne, Hamilton, David P.
core