Article
Engineering, Marine
Stefano Accoroni, Marika Ubaldi, Simone Bacchiocchi, Francesca Neri, Melania Siracusa, Maria Giovanna Buonomo, Alessandra Campanelli, Cecilia Totti
Summary: The bioaccumulation of OVTX toxins in mussels was found to be correlated with the abundance of Ostreopsis during blooms. The study suggests that the Italian guidelines for managing Ostreopsis blooms are effective in preventing human intoxication through mussel contamination.
JOURNAL OF MARINE SCIENCE AND ENGINEERING
(2022)
Article
Marine & Freshwater Biology
K. Drouet, C. Jauzein, S. Gasparini, A-S Pavaux, E. Berdalet, S. Marro, V. Davenet-Sbirrazuoli, R. Siano, R. Lemee
Summary: This study conducted long-term monitoring of blooms of the toxic benthic dinoflagellate Ostreopsis cf. ovata at Larvotto beach in the NW Mediterranean Sea. The results showed that bloom characteristics varied greatly throughout the study period, and the impact of temperature on bloom dynamics is likely more complex than previously thought. Additionally, a strong positive correlation was found between spring sea surface temperature anomalies and the bloom starting date.
Article
Marine & Freshwater Biology
Patricia A. Tester, R. Wayne Litaker, Emilio Soler-Onis, Juan Fernandez-Zabala, Elisa Berdalet
Summary: This study compares the advantages of macrophyte and artificial substrate methods for collecting toxic benthic dinoflagellates cells and discusses which method is more appropriate for monitoring programs. Higher concentrations of Gambierdiscus cells were found in macrophytes with higher surface area per unit biomass, however, there was no evidence of cells actively selecting specific macrophytes. Therefore, the artificial substrate method is considered as one of the most robust approaches for collecting toxic benthic dinoflagellates.
Article
Marine & Freshwater Biology
Lucemberg Sales Faustino, Fernando Ramos Queiroga, Helene Hegaret, Luis Fernando Marques-Santos, Raquel A. F. Neves, Silvia Nascimento, Patricia Mirella da Silva
Summary: Oyster production in Brazil is directly impacted by the quality of the environment, with harmful algal blooms, particularly O. cf. ovata, affecting oyster physiology and defense mechanisms. The study shows that C. gasar oysters are resilient to P. lima exposure but more susceptible to O. cf. ovata, which impairs oyster physiology and defense mechanisms, potentially leading to increased susceptibility to parasite infections.
AQUATIC TOXICOLOGY
(2021)
Article
Marine & Freshwater Biology
Haifeng Gu, Yinuo Wang, Amelie Derrien, Fabienne Herve, Na Wang, Mitila Pransilpa, Po Tin Lim, Chui Pin Leaw
Summary: This study established nine strains of Ostreopsis from six localities in the South China Sea and confirmed the production of toxins in two Ostreopsis species, providing important information for toxin research in the region.
Article
Marine & Freshwater Biology
Luiz L. Mafra Mafra Jr., Ines Sunesen, Estela Pires, Silvia Mattos Nascimento, Gonzalo Alvarez, Jose Ernesto Mancera-Pineda, Gladys Torres, Olga Carnicer, Jose Alexis Huamani Galindo, Sonia Sanchez Ramirez, Ana Martinez-Goicoecheaj, Dilcia Morales-Benavides, Lorelys Valerio-Gonzalez
Summary: Public awareness about Benthic Harmful Algal Blooms (BHABs) and their negative impacts has increased, but reports of BHABs remain scarce in South America (SA). This paper provides a comprehensive overview of BHABs in SA, recording over 300 different occurrences of potentially toxic BHAB species. The study reveals the distribution and diversity of BHABs in SA, highlighting the importance of research and monitoring to mitigate their negative impacts.
Article
Ecology
Natasa Kuzat, Ana Baricevic, Mirta Smodlaka Tankovic, Daniela Maric Pfannkuchen, Ingrid Ivancic, Martin Pfannkuchen
Summary: The marine benthic dinoflagellate genus Ostreopsis is known for producing harmful marine toxins, with documented presence and harmful algal blooms in the Adriatic Sea. The study provides detailed information on the distribution and genetic identification of Ostreopsis along the eastern Adriatic coast, revealing potential risks to marine organisms and human health.
REGIONAL STUDIES IN MARINE SCIENCE
(2021)
Article
Chemistry, Medicinal
Nicolas Chomerat, Elvire Antajan, Isabelle Auby, Gwenael Bilien, Liliane Carpentier, Marie-Noelle De Casamajor, Florian Ganthy, Fabienne Herve, Magali Labadie, Claire Meteigner, Camille Paradis, Myriam Perriere-Rumebe, Florence Sanchez, Veronique Sechet, Zouher Amzil
Summary: Blooms of the benthic toxic dinoflagellate genus Ostreopsis have been increasing in frequency in warm temperate areas such as the Mediterranean Sea. These blooms can have deleterious effects on ecosystems and impact human health. A recent investigation on the French Basque coast found the presence of new health risks due to the blooms of Ostreopsis species, possibly related to climate change.
Article
Marine & Freshwater Biology
Adriana Zingone, Laura Escalera, Katerina Aligizaki, Margarita Fernandez-Tejedor, Amany Ismael, Marina Montresor, Patricija Mozetic, Seyfettin Tas, Cecilia Totti
Summary: The spatial distribution of toxic marine microalgal species and the impacts of harmful algal events in the Mediterranean Sea were reviewed based on OBIS databases. Mainly affecting human health and aquaculture, toxicity-related events are not frequent in the MS.
Article
Chemistry, Organic
Sangbum Lee, Seung Joo Moon, Yeong Du Yoo, Byung Su Hwang, Eun Ju Jeong, Jung-Rae Rho
Summary: Ovataline, a polar metabolite from marine dinoflagellate, inhibits the activity of type II 5α-reductase in prostate cells.
Article
Ecology
Eva Ternon, Anne-Sophie Pavaux, Alexandra Peltekis, Marin-Pierre Gemin, Cecile Jauzein, Benjamin Bailleul, Rodolphe Lemee, Olivier P. Thomas
Summary: This study investigated the impact of the toxic dinoflagellate Ostreopsis cf. ovata on co-occurring microalgal species through in vitro experiments. The results showed that O. cf. ovata exhibited weak allelopathic effects on the growth of the microalgal species, but its mucus layer could accumulate the potent ovatoxins and negatively affect the growth of the microalgae.
Article
Marine & Freshwater Biology
Moncer Malika, Ben Brahim Mounir, Mahfoudhi Mabrouka, Dammak Walha Lamia, Bel Hassen Malika, Hamza Asma
Summary: This study evaluated changes in diversity and abundance of toxic microalgae over a 17-year period in Sfax coasts, Tunisia, showing significant relationships with environmental parameters, especially Prorocentrum lima. The data revealed clear disparities in species abundance from year to year, influenced by seasonal cycles and various physicochemical and meteorological factors.
MARINE ECOLOGY-AN EVOLUTIONARY PERSPECTIVE
(2021)
Article
Ecology
Lam Nguyen-Ngoc, Hai Doan-Nhu, Luom Phan-Tan, Duyen Ngoc Huynh-Thi, Vinh Nguyen-Tam, Anh H. Pham, Hue Minh Tran-Thi, Van Le Tran-Thi, Patricia Tester
Summary: Seasonal variations of potentially toxic benthic dinoflagellates (bHABs) were studied in Bai Lan, Nha Trang Bay, South Central Vietnam for one year. Physical conditions and nutrient concentrations were measured. The study identified 21 species of bHABs, with some species occurring throughout the year. The cell density of bHABs did not show clear seasonality, but some species were absent during high rainfall. Different species of bHABs were associated with different environmental conditions.
REGIONAL STUDIES IN MARINE SCIENCE
(2022)
Article
Food Science & Technology
Epaminondas D. Christou, Ioanna Varkitzi, Isabel Maneiro, Soultana Zervoudaki, Kalliopi Pagou
Summary: Researchers conducted a series of experiments to study the effects of toxic dinoflagellate on the feeding, reproduction, and toxin excretion of copepods. They found that the toxicity of the dinoflagellate affected the reproduction, toxin excretion, and feeding behavior of the copepods, indicating the significant impact of toxins on copepods.
Article
Microbiology
Yong Heng Phua, Javier Tejeda, Michael C. Roy, Filip Husnik, Kevin C. Wakeman
Summary: This study investigated the diversity and toxin production of the benthic dinoflagellate Ostreopsis. Nine clonal cultures were established and morphological analysis helped distinguish different species. The study found intraspecies variation in toxin production, identified two potential analogs of ovatoxin-a and ostreocin-A, and identified commonly associated bacterial clades. The role of these bacteria in toxin biosynthesis remains unclear.
EUROPEAN JOURNAL OF PROTISTOLOGY
(2023)
Article
Marine & Freshwater Biology
Adriana Zingone, Laura Escalera, Katerina Aligizaki, Margarita Fernandez-Tejedor, Amany Ismael, Marina Montresor, Patricija Mozetic, Seyfettin Tas, Cecilia Totti
Summary: The spatial distribution of toxic marine microalgal species and the impacts of harmful algal events in the Mediterranean Sea were reviewed based on OBIS databases. Mainly affecting human health and aquaculture, toxicity-related events are not frequent in the MS.
Article
Plant Sciences
Sonia Giulietti, Tiziana Romagnoli, Melania Siracusa, Simone Bacchiocchi, Cecilia Totti, Stefano Accoroni
Summary: Species of the genus Pseudo-nitzschia are common in the northern Adriatic Sea and during 2018-2019, six different taxa were identified through morphological and molecular analysis, with P. cf. arenysensis revealed as a cryptic species within the P. delicatissima complex. No domoic acid production was detected in the studied strains.
Article
Chemistry, Medicinal
Simone Bacchiocchi, Debora Campacci, Melania Siracusa, Alessandra Dubbini, Francesca Leoni, Tamara Tavoloni, Stefano Accoroni, Stefania Gorbi, Maria Elisa Giuliani, Arianna Stramenga, Arianna Piersanti
Summary: Tetrodotoxins (TTXs) have raised concerns in Europe in recent years, prompting the European Food Safety Authority to set recommended thresholds for TTX in mollusks and call for data collection to conduct a more comprehensive risk assessment. A study in the Marche region of Italy assessed TTX levels in mussels harvested in 2018-2019, as well as the presence of Vibrio spp. carrying genes associated with TTX biosynthesis. The study found some mussels contaminated with TTXs, but further investigation is needed to determine the potential threat of TTXs in the region.
Article
Plant Sciences
Sonia Giulietti, Cecilia Totti, Tiziana Romagnoli, Melania Siracusa, Simone Bacchiocchi, Stefano Accoroni
Summary: A new diatom species, Nitzschia gobbii sp. nov., was discovered and described in the Adriatic Sea, showing distinct morphological and genetic characteristics from other common species in the region. Despite its resemblance to other species, Nitzschia gobbii strains do not produce detectable levels of domoic acid.
Article
Oceanography
Francesca Neri, Tiziana Romagnoli, Stefano Accoroni, Alessandra Campanelli, Mauro Marini, Federica Grilli, Cecilia Totti
Summary: This study analyzed a long-term (1988-2018) data set of phytoplankton and physico-chemical parameters in an offshore station of the LTER Senigallia-Susak transect. The study found that the annual cycle of phytoplankton in this area differed from that in coastal areas, with the highest abundance in June and the lowest in November. The main component of the phytoplankton community was phytoflagellates, and their abundance paralleled that of the total phytoplankton. The summer phytoplankton maximum was mainly explained by the allochthonous input of DIN and PO4 brought by low salinity waters.
CONTINENTAL SHELF RESEARCH
(2022)
Article
Engineering, Marine
Stefano Accoroni, Marika Ubaldi, Simone Bacchiocchi, Francesca Neri, Melania Siracusa, Maria Giovanna Buonomo, Alessandra Campanelli, Cecilia Totti
Summary: The bioaccumulation of OVTX toxins in mussels was found to be correlated with the abundance of Ostreopsis during blooms. The study suggests that the Italian guidelines for managing Ostreopsis blooms are effective in preventing human intoxication through mussel contamination.
JOURNAL OF MARINE SCIENCE AND ENGINEERING
(2022)
Article
Chemistry, Medicinal
Simone Bacchiocchi, Debora Campacci, Melania Siracusa, Alessandra Dubbini, Stefano Accoroni, Tiziana Romagnoli, Alessandra Campanelli, Francesco Griffoni, Tamara Tavoloni, Stefania Gorbi, Cecilia Totti, Arianna Piersanti
Summary: Wild mussels in the Adriatic Sea of Italy are contaminated with Tetrodotoxins (TTXs), possibly due to the presence of Vibrio alginolyticus strain and phytoplankton. Further investigation is needed to determine the role of these factors as sources of contamination.
Article
Marine & Freshwater Biology
Francesca Neri, Tiziana Romagnoli, Stefano Accoroni, Marika Ubaldi, Angela Garzia, Andrea Pizzuti, Alessandra Campanelli, Federica Grilli, Mauro Marini, Cecilia Totti
Summary: This study compared two long-term phytoplankton time series in the Northern Adriatic Sea and found that the coastal station was more variable and influenced by the Western Adriatic Current and riverine inputs. The offshore phytoplankton community showed higher biodiversity due to its more oligotrophic condition. Graph-network analysis was a useful tool to study the phytoplankton community. Evaluating the Good Environmental Status should consider oceanographic differences and use multiple statistical approaches.
ESTUARINE COASTAL AND SHELF SCIENCE
(2023)
Article
Ecology
Joost de Vries, Fanny Monteiro, Glen Wheeler, Alex Poulton, Jelena Godrijan, Federica Cerino, Elisa Malinverno, Gerald Langer, Colin Brownlee
Summary: Coccolithophores are marine calcifying phytoplankton with a haplo-diplontic life cycle. Calcified haploid coccolithophores generally make up a small portion of the total population, but can be significant contributors under certain environmental conditions. The haploid and diploid life cycle phases occupy contrasting niches, allowing coccolithophores to expand their niche by approximately 18.8%.
Article
Fisheries
Sonia Giulietti, Tiziana Romagnoli, Alessandra Campanelli, Cecilia Totti, Stefano Accoroni
Summary: The study analyzed the ecology and seasonality of Pseudo-nitzschia species at a coastal station in the Adriatic Sea from 1988 to 2020, revealing varying abundances and characteristics across different seasons. The DNA sequence data identified several cryptic and pseudo-cryptic species within the Pseudo-nitzschia genus, emphasizing the importance of combining genetic analysis with traditional microscopy in ecological investigations.
MEDITERRANEAN MARINE SCIENCE
(2021)
Meeting Abstract
Plant Sciences
Stefano Accoroni, Sonia Giulietti, Tiziana Romagnoli, Melania Siracusa, Simone Bacchiocchi, Cecilia Totti
