U.S. flag

An official website of the United States government

Dot gov

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Https

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

PubAg

Main content area

You searched for: Subject Gonyaulax Remove constraint Subject: Gonyaulax
Start Over

Search

85  Search Results

« Previous | 1 - 50 of 85 |
Number of results to display per page

Search Results

1. Spatiotemporal distribution characteristics of yessotoxins and pectenotoxins in phytoplankton and shellfish collected from the southern coast of South Korea

Author:
Mungi Kim; Seongjin Hong; Young Kyun Lim; Jihyun Cha; Jiyun Gwak; Youngnam Kim; Seong-Ah An; Hee-Seok Lee; Seung Ho Baek
Source:
Marine pollution bulletin 2022 v.180 pp. 113776
ISSN:
0025-326X
Subject:
Dinophysis acuminata; Gonyaulax; coasts; food safety; human health; lipophilicity; marine pollution; microalgae; phytoplankton; risk; scallops; seafoods; shellfish; summer; yessotoxin; South Korea
Abstract:
... The distribution characteristics of lipophilic marine biotoxins (LMTs), such as yessotoxins (YTXs) and pectenotoxins (PTXs) in phytoplankton, mussels, and commercial seafood were determined for the southern coast of South Korea. Gonyaulax spinifera and Dinophysis acuminata, which are the causative microalgae of YTXs and PTXs, were recorded during summer. Homo-YTX and PTX-2 were predominantly detec ...
DOI:
10.1016/j.marpolbul.2022.113776

2. Unraveling the Gonyaulax baltica Species Complex: Cyst–theca Relationship of Impagidinium variaseptum, Spiniferites pseudodelicatus sp. nov. and S. ristingensis (Gonyaulacaceae, Dinophyceae), With Descriptions of Gonyaulax bohaiensis sp. nov, G. amoyensis sp. nov. and G. portimonensis sp. nov.

Author:
Haifeng Gu; Kenneth Neil Mertens; Amélie Derrien; Gwenael Bilien; Zhen Li; Philipp Hess; Véronique Séchet; Bernd Krock; Ana Amorim; Zhun Li; Vera Pospelova; Kirsty F. Smith; Lincoln MacKenzie; Joo Yeon Yoon; Hyun Jung Kim; Hyeon Ho Shin
Source:
Journal of phycology 2022 v.58 no.3 pp. 465-486
ISSN:
0022-3646
Subject:
Gonyaulax; algology; genes; germination; liquid chromatography; new species; phylogeny; tandem mass spectrometry; yessotoxin; New Zealand; South Korea
Abstract:
... The taxonomy of the extant dinoflagellate genus Gonyaulax is challenging since its thecate morphology is rather conservative. In contrast, cysts of Gonyaulax are varied in morphology and have been related with the fossil‐based genera Spiniferites and Impagidinium. To better understand the systematics of Gonyaulax species, we performed germination experiments on cysts that can be identified as S. r ...
DOI:
10.1111/jpy.13245

3. Assessment of the Presence of Lipophilic Phycotoxins in Scallops (Argopecten purpuratus) Farmed along Peruvian Coastal Waters

Author:
Vanessa Leyva; Helena Maruenda
Source:
Journal of food protection 2021 v.84 no.2 pp. 204-212
ISSN:
0362-028X
Subject:
Argopecten purpuratus; Dinophysis acuminata; Gonyaulax; azaspiracid; coastal water; coasts; dinophysistoxins; food safety; hepatopancreas; lipophilicity; liquid chromatography; monitoring; okadaic acid; phytoplankton; poisonous algae; scallops; shellfish; tandem mass spectrometry; yessotoxin; Peru
Abstract:
... Some harmful algal blooms produce lipophilic marine biotoxins (LMTs) such as okadaic acid (OA; and its analogs dinophysistoxins [DTXs]), yessotoxins (YTXs), pectenotoxins (PTXs), and azaspiracids (AZAs), all of which may accumulate in filter-feeding bivalve mollusks. European health regulations stipulate a limit of 160 μg/kg for OA or DTXs, PTXs, and AZAs and 3.75 mg/kg for YTXs. Argopecten purpur ...
DOI:
10.4315/JFP-20-212

4. Cyst-theca relationships of Spiniferites bentorii, S. hyperacanthus, S. ramosus, S. scabratus and molecular phylogenetics of Spiniferites and Tectatodinium (Gonyaulacales, Dinophyceae)

Author:
Haifeng Gu; Kai Huo; Bernd Krock; Gwenael Bilien; Vera Pospelova; Zhen Li; Consuelo Carbonell-Moore; Lourdes Morquecho; Živana Ninčević; Kenneth Neil Mertens
Source:
Phycologia 2021 v.60 no.4 pp. 332-353
ISSN:
0031-8884
Subject:
Bayesian theory; Gonyaulax; fossils; genes; germination; monophyly; polyphyly; statistical analysis
Abstract:
... It is well known that modern resting cysts with morphologies matching those of species of the fossil genus Spiniferites germinate into motile cells of the genus Gonyaulax. Different Spiniferites species have been connected to a single Gonyaulax species, raising the question of whether they are over-classified. Through germination experiments of cysts with the morphological features of four species ...
DOI:
10.1080/00318884.2021.1930796

5. Development of harmful algal blooms species responsible for lipophilic and amnesic shellfish poisoning intoxications in southwestern Mediterranean coastal waters

Author:
Hicham Aboualaalaa; Mohammed L'Bachir El kbiach; Benlahcen Rijal Leblad; Fabienne Hervé; Amal Hormat-Allah; Lauriane Baudy; Ismail Ennaskhi; Ikram Hammi; Mustapha Ibghi; Hind Elmortaji; Eric Abadie; Jean Luc Rolland; Zouher Amzil; Mohamed Laabir
Source:
Toxicon 2022 v.219 pp. 106916
ISSN:
0041-0101
Subject:
Acanthocardia tuberculata; Dinophysis caudata; Gonyaulax; Karenia; Prorocentrum; Pseudo-nitzschia; clams; domoic acid; lipophilicity; meat; phytoplankton; poisonous algae; shellfish; surveys; toxicity; toxins; Mediterranean region; Morocco
Abstract:
... Mediterranean waters have undergone environmental changes during the last decades leading to various modifications of the structure of phytoplankton populations, especially Harmful Algal Blooms (HABs) species. Monitoring of the potentially toxic phytoplankton species was carried out biweekly in the western Mediterranean coast of Morocco from March 2018 to March 2019. Lipophilic Shellfish Toxins (L ...
DOI:
10.1016/j.toxicon.2022.09.002

6. Dinoflagellates cyst assemblage concerning trophic index for eutrophication from major ports along the west coast of India

Author:
R.V. Rodrigues; J.S. Patil; A.C. Anil
Source:
Marine pollution bulletin 2022 v.176 pp. 113423
ISSN:
0025-326X
Subject:
Gonyaulax; autotrophs; coasts; estuaries; eutrophication; heterotrophs; indicator species; marine pollution; new species; plankton; India
Abstract:
... An overview of dinoflagellates cysts assemblage is presented as a trophic index for three monsoon-influenced estuarine and marine ports along the Indian coast. The cyst distribution (including harmful species) showed a trend of highest abundance and species number in highly eutrophicated estuarine (Cochin-south) followed by medium (New-Mangalore-central) and low (Kandla-north) levels of eutrophica ...
DOI:
10.1016/j.marpolbul.2022.113423

7. Gonyaulacalean tabulation revisited using plate homology and plate overlap, with emphasis on the ventral area (Dinophyceae)

Author:
M. Consuelo Carbonell-Moore; Kazumi Matsuoka; Kenneth Neil Mertens
Source:
Phycologia 2022 v.61 no.2 pp. 195-210
ISSN:
2330-2968
Subject:
Alexandrium; Amphidoma; Azadinium; Ceratium; Gonyaulax; phylogeny
Abstract:
... We propose a standardization of the gonyaulacalean (Dinophyceae) Kofoidian plate tabulation using plate homology and overlap patterns, on the basis of a new morphological study of species belonging to 17 genera previously classified in the order Gonyaulacales: Acanthogonyaulax, Alexandrium, Amphidoma, Azadinium, Ceratium, Ceratocorys, Cladopyxis, Cribroperidinium, Fragilidium, Gonyaulax, Heterodin ...
DOI:
10.1080/00318884.2021.2024413

8. Harmful algal blooms of the Benguela eastern boundary upwelling system

Author:
Grant C. Pitcher; Deon C. Louw
Source:
Harmful algae 2021 v.102 pp. 101898
ISSN:
1568-9883
Subject:
Alexandrium catenella; Alexandrium minutum; Dinophysis acuminata; Dinophysis fortii; Gonyaulax; Karenia; Prorocentrum; abalone; algal blooms; anaerobic conditions; biomass; birds; coasts; diarrhetic shellfish poisoning; domoic acid; ecosystems; farms; human health; mortality; plankton; poisoning; poisonous algae; shellfish; yessotoxin
Abstract:
... The Benguela Upwelling System (BUS) is subject to a high incidence of HABs. Of the major shellfish poisoning syndromes associated with HABs, Paralytic and Diarrhetic Shellfish Poisoning (PSP and DSP) pose the greatest concern, but as documented herein there are several other HAB organisms that are also present. Blooms of Alexandrium catenella have been recognised as the typical cause of PSP since ...
DOI:
10.1016/j.hal.2020.101898

9. Recommendations for epitypification of dinophytes exemplified by Lingulodinium polyedra and molecular phylogenetics of the Gonyaulacales based on curated rRNA sequence data

Author:
Urban Tillmann; Alexis Bantle; Bernd Krock; Malte Elbrächter; Marc Gottschling
Source:
Harmful algae 2021 v.104 pp. 101956
ISSN:
1568-9883
Subject:
Alexandrium; DNA; Gonyaulax; databases; monophyly; nucleotide sequences; paraphyly; protists; type collections; Germany
Abstract:
... Gonyaulacales include a considerable number of harmful algae and to understand their origin and rise, knowledge of the evolutionary relationships is necessary. Many scientific names of protists introduced prior to the availability of DNA analytics are ambiguous and impede communication about biological species and their traits in the microbial world. Strains of Lingulodinium polyedra were establis ...
DOI:
10.1016/j.hal.2020.101956

10. The distribution of dinoflagellate cyst assemblages in recent sediments of the Oualidia Lagoon, Morocco, with a focus on toxic species

Author:
K Chaira; H Rhinane; B Ennaffah; S Maimouni; R Sagou; S Loulad; A BenMhamed; A Agouzouk; S BenBrahim; E Masseret; M Laabir
Source:
African journal of marine science 2021 v.43 no.3 pp. 279-292
ISSN:
1814-2338
Subject:
Alexandrium minutum; Alexandrium tamarense; Gonyaulax; Gymnodinium; coasts; human health; marine science; morphs; neurotoxicity; organic matter; poisonous algae; species diversity; water content; Morocco
Abstract:
... Harmful algal blooms (HABs) are becoming widely distributed and more frequent, threatening socioecosystems and human health. We determined species composition, abundance and spatial distribution of dinoflagellate cysts in the upper sediment of the Oualidia Lagoon located on the Atlantic coast of Morocco. Sediment samples were collected in 2017 at 51 stations, and environmental parameters were meas ...
DOI:
10.2989/1814232X.2021.1945684

11. Distribution of dinoflagellate cyst assemblages in recent sediments from a southern Mediterranean lagoon (Mellah, Algeria) with emphasis on toxic species

Author:
Mohamed Anis Draredja; Hocine Frihi; Chahinaise Boualleg; Eric Abadie; Mohamed Laabir
Source:
Environmental science and pollution research international 2020 v.27 no.20 pp. 25173-25185
ISSN:
0944-1344
Subject:
Alexandrium catenella; Alexandrium minutum; Gonyaulax; Gymnodinium; humans; morphs; neurotoxins; organic matter; poisoning; pollution; research; sediments; shellfish; toxicity; water content; yessotoxin; Algeria; Mediterranean Sea; Mediterranean region
Abstract:
... This is the first study on the dinoflagellate cysts in Algerian waters and in Mellah Lagoon (South Western Mediterranean), located within a protected reserve. In total, 42 species of dinocysts belonging to 7 orders, 12 families and 23 genera, were identified in the 26 superficial sediment samples from Mellah Lagoon. The distribution of dinocysts in the sediment of this lagoon is heterogeneous. Ind ...
DOI:
10.1007/s11356-020-08830-0

12. In situ measurements of bioluminescence response of Gonyaulax spinifera to various mechanical stimuli

Author:
C. R. Vishal; A. Parvathi; P. Anil; P. M. Mohammed Iqbal; K. R. Muraleedharan; S. Abdul Azeez; Camey M. Furtado
Source:
Aquatic ecology 2021 v.55 no.2 pp. 437-451
ISSN:
1386-2588
Subject:
Gonyaulax; aquaculture; bioluminescence; chlorophyll; ecology; estuaries; farms
Abstract:
... A conspicuous bioluminescence during nighttime was reported in an aquaculture farm in the Cochin estuary due to Gonyaulax spinifera bloom on March 20, 2020. In situ measurements on bioluminescence was carried out during nighttime to quantify the response of G. spinifera to various mechanical stimuli. The bioluminescence intensity (BI) was measured using Glowtracka, an advanced single channel senso ...
DOI:
10.1007/s10452-021-09836-7

13. Influence of Ocean–Lagoon exchanges on spatio-temporal variations of phytoplankton assemblage in an Atlantic Lagoon ecosystem (Oualidia, Morocco)

Author:
Laila Somoue; Herve Demarcq; Ahmed Makaoui; Karim Hilmi; Omar Ettahiri; Abdelouahed Ben Mhamed; Aziz Agouzouk; Tarik Baibai; Jamila Larissi; Said Charib; Abdelkrim Kalmouni; Mohamed Laabir
Source:
Regional studies in marine science 2020 v.40 pp. 101512
ISSN:
2352-4855
Subject:
Alexandrium; Chattonella; Dictyocha; Dinophysis; Gonyaulax; Gymnodinium; Karenia; Prorocentrum; ammonium; anthropogenic activities; autumn; biodiversity; chlorophyll; environmental factors; marine ecosystems; nitrates; nutrients; oyster culture; phytoplankton; poisonous algae; salinity; seasonal variation; seawater; spatial variation; summer; surveys; temperature; Atlantic Ocean; Morocco
Abstract:
... The Oualidia Lagoon is a semi enclosed marine ecosystem connected to the Atlantic Ocean of Morocco and exposed to human activities, mainly agriculture and oyster farming. The present study aims to characterize the spatio-temporal variation of the phytoplankton assemblage and to highlight the effect of the main environmental parameters on this important planktonic component evolving in a vulnerable ...
DOI:
10.1016/j.rsma.2020.101512

14. On Acanthogonyaulax spinifera (Dinophyceae)

Author:
Consuelo Carbonell-Moore; Kenneth Neil Mertens
Source:
Phycologia 2020 v.59 no.5 pp. 456-459
ISSN:
2330-2968
Subject:
Gonyaulax; materials; Indian Ocean; Pacific Ocean
Abstract:
... The genus Acanthogonyaulax (Kofoid) H.W.Graham is a rarely observed tropical gonyaulacoid dinoflagellate, first documented at the end of the 19th century. It was initially described as a species of Ceratocorys F.Stein, then transferred to Gonyaulax Diesing, and finally to its own genus, Acanthogonyaulax. Discrepancies in the observations of its plate pattern were responsible for these changes. In ...
DOI:
10.1080/00318884.2020.1807742

15. Responses of phytoplankton community structure and association to variability in environmental drivers in a tropical coastal lagoon

Author:
Lipika Tarafdar; Ji Yoon Kim; Suchismita Srichandan; Madhusmita Mohapatra; Pradipta R. Muduli; Abhishek Kumar; Deepak R. Mishra; Gurdeep Rastogi
Source:
Science of the total environment 2021 v.783 pp. 146873
ISSN:
0048-9697
Subject:
Alexandrium; Chlorophyta; Chrysophyceae; Cyanobacteria; Diploneis; Euglenozoa; Gonyaulax; Landsat; Prorocentrum; biomass; coastal water; community structure; data collection; habitats; pH; phytoplankton; salinity; water temperature; India
Abstract:
... Spatial and seasonal heterogeneity in phytoplankton communities are governed by many biotic and abiotic drivers. However, the identification of long-term spatial and temporal trends in abiotic drivers, and their interdependencies with the phytoplankton communities' structure is understudied in tropical brackish coastal lagoons. We examined phytoplankton communities' spatiotemporal dynamics from a ...
DOI:
10.1016/j.scitotenv.2021.146873

16. Spatial distribution and source of biotoxins in phytoplankton from the South China Sea, China

Author:
Chao Liu; Ying Ji; Lei Zhang; Jiangbing Qiu; Zhaohui Wang; Lei Liu; Yunyun Zhuang; Tianying Chen; Yang Li; Biaobiao Niu; Aifeng Li
Source:
Journal of hazardous materials 2021 v.418 pp. 126285
ISSN:
0304-3894
Subject:
Alexandrium; Gonyaulax; Pseudo-nitzschia; azaspiracid; coasts; domoic acid; environmental health; estuaries; imines; mariculture; microalgae; okadaic acid; phytoplankton; rivers; saxitoxins; yessotoxin; China; South China Sea
Abstract:
... Marine phycotoxins severely threaten ecosystem health and mariculture. This study investigates the spatial distribution and source of diverse phycotoxins in the South China Sea (SCS), during four 2019/2020 cruises. Saxitoxin (STX) and okadaic acid (OA) -groups, azaspiracids, cyclic imines, pectenotoxins (PTX), yessotoxins, and domoic acid (DA) toxins were analyzed in microalgal samples. PTX2 occur ...
DOI:
10.1016/j.jhazmat.2021.126285

17. The presence and abundance of harmful dinoflagellate algae related to water quality in Jakarta Bay, Indonesia

Author:
Annisa Khaira Nasution; Noverita Dian Takarina; Hikmah Thoha
Source:
Biodiversitas 2021 v.22 no.5 pp. -
ISSN:
2085-4722
Subject:
Ceratium; Dinophysis; Gonyaulax; Gymnodinium; Noctiluca; humans; marine environment; oxygen; pH; salinity; temperature; turbidity; water quality; Indonesia
Abstract:
... Takarina ND, Nasution AK, Thoha H. 2021. The presence and abundance of harmful dinoflagellate algae related to water quality in Jakarta Bay, Indonesia. Biodiversitas 22: 2909-2917. Dinoflagellate is a single-celled organism that commonly occurs in large numbers in marine environment. When environment changes, harmful dinoflagellate algae often emerge as a response to change in water quality. Jakar ...
DOI:
10.13057/biodiv/d220556

18. The relationship between toxic phytoplankton species occurrence and environmental and meteorological factors along the Eastern Adriatic coast

Author:
Živana Ninčević Gladan; Frano Matić; Jasna Arapov; Sanda Skejić; Mia Bužančić; Ana Bakrač; Maja Straka; Quentin Dekneudt; Branka Grbec; Roman Garber; Nikša Nazlić
Source:
Harmful algae 2020 v.92 pp. 101745
ISSN:
1568-9883
Subject:
Alexandrium; Dinophysis acuta; Dinophysis fortii; Gonyaulax; coasts; environmental factors; estuaries; freshwater; phytoplankton; poisonous algae; rain; river flow; salinity; spring; temperature; time series analysis; toxicity; wind; winter
Abstract:
... In this study, the time series of toxic phytoplankton species collected between 2004 and 2018 from the Northern Adriatic, Šibenik Bay, and Mali Ston Bay was analyzed in relation to environmental (temperature, salinity, water column stability, and river flow) and meteorological parameters (precipitation and wind). Because of the mostly non-linear relation between biotic and abiotic parameters, self ...
DOI:
10.1016/j.hal.2020.101745

19. Analytical screening of marine algal toxins for seafood safety assessment in a protected Mediterranean shallow water environment

Author:
Monica Mattarozzi; Antonella Cavazza; Anna Calfapietra; Monica Cangini; Silvia Pigozzi; Federica Bianchi; Maria Careri
Source:
Food additives & contaminants 2019 v.36 no.4 pp. 612-624
ISSN:
1944-0057
Subject:
Alexandrium; European Union; Gonyaulax; amnesic shellfish poisoning; aquaculture; breeding sites; clams; coasts; disease severity; ecosystems; farms; food safety; imines; lakes; lipophilicity; liquid chromatography; mass spectrometry; microalgae; monitoring; multiresidue analysis; mussels; natural toxicants; paralytic shellfish poisoning; phytoplankton; safety assessment; screening; seafoods; shellfish; toxicity; yessotoxin; Sicily
Abstract:
... Microalgal species growing in marine and aquaculture environments can be responsible for harmful events because of their ability to produce potent natural toxins that can accumulate in edible mollusc species. Their consumption can cause severe illness and even be lethal. The European Union provides comprehensive regulations covering various general food safety aspects to manage the risk of contami ...
DOI:
10.1080/19440049.2019.1581380

20. Biotic interaction as the triggering factor for blooms under favourable conditions in tropical estuarine systems

Author:
Samiksha Prabhudessai; C. R. Vishal; C. U. Rivonker
Source:
Environmental monitoring and assessment 2019 v.191 no.2 pp. 54
ISSN:
0167-6369
Subject:
Alexandrium minutum; Bacillariophyceae; Cochlodinium; Gonyaulax; Prorocentrum; algal blooms; allelopathy; biocenosis; coasts; ecological function; estuaries; marine environment; monsoon season; nitrates; phosphates; salinity; toxicity; India
Abstract:
... The formation of harmful algal blooms (HABs) in the marine environment is detrimental to the ecosystem function affecting the sequence of biological events. Hence, the present study is focused on the seasonal distribution of HAB-forming diatoms and dinoflagellates and their ecological interactions in two tropical estuaries, namely Chapora and Sal in the west coast of India. A total of 17 species o ...
DOI:
10.1007/s10661-018-7172-7

21. Blooming of Gonyaulax polygramma along the southeastern Arabian Sea: Influence of upwelling dynamics and anthropogenic activities

Author:
P. Sathish Kumar; M. Kumaraswami; P. Ezhilarasan; G. Durga Rao; R. Sivasankar; V. Ranga Rao; K. Ramu
Source:
Marine pollution bulletin 2020 v.151 pp. 110817
ISSN:
0025-326X
Subject:
Gonyaulax; correspondence analysis; ecosystems; estuaries; marine pollution; monsoon season; phosphorus; phytoplankton; poisonous algae; runoff; salinity; summer; surface water; toxicity; Arabian Sea
Abstract:
... The influence of upwelling on the phytoplankton community was examined during the upwelling-relaxation period in the southeastern Arabian Sea. Elevated upwelling intensity during the summer monsoon season of 2016 resulted in the re-suspension of harmful dinoflagellates into the surface water. Further, the surplus of phosphorus (P) inputs into the coastal waters from estuarine runoff during the upw ...
DOI:
10.1016/j.marpolbul.2019.110817

22. Changes in community structure and photosynthetic activities of total phytoplankton species during the growth, maintenance, and dissipation phases of a Prorocentrum donghaiense bloom

Author:
Anglu Shen; Joji Ishizaka; Mengmeng Yang; Longling Ouyang; Yane Yin; Zengling Ma
Source:
Harmful algae 2019 v.82 pp. 35-43
ISSN:
1568-9883
Subject:
Bacillariophyceae; Coscinodiscus; Cyclotella; Gonyaulax; Prorocentrum; algal blooms; chlorophyll; coastal water; community structure; dominant species; electron transfer; islands; photosynthesis; phytoplankton; poisonous algae; prediction; seawater; surveys
Abstract:
... The potential interactions between the bloom-forming dinoflagellates and other phytoplankton during the algal bloom cycle are interesting, while the causes for the phytoplankton community changes were not fully understood. We hypothesized that phytoplankton community structure and photosynthetic activities of total phytoplankton have their special characteristics in different phases of the algal b ...
DOI:
10.1016/j.hal.2018.12.007

23. Checklist of the planktonic marine dinoflagellates of New Zealand

Author:
Lesley L. Rhodes; Kirsty F. Smith; Lincoln MacKenzie; Catherine Moisan
Source:
New Zealand journal of marine and freshwater research 2020 v.54 no.1 pp. 86-101
ISSN:
1175-8805
Subject:
Alexandrium; Amphidinium; Azadinium; Cochlodinium; Dinophysis; Diploneis; Gonyaulax; Gymnodinium; Heterocapsa; Karenia; Noctiluca; Oxyrrhis; Prorocentrum; aquaculture industry; benthic organisms; environmental DNA; environmental health; epiphytes; harvesting; high-throughput nucleotide sequencing; humans; light microscopy; monitoring; phytoplankton; public research; research programs; shellfish; toxins; New Zealand
Abstract:
... Planktonic dinoflagellate records for New Zealand are substantial due to intense monitoring programmes that have taken place on behalf of New Zealand’s biotoxin regulators and the shellfish industry since 1993. At that time a Karenia bloom caused human illnesses and shellfish harvesting ceased until monitoring was instigated. Phytoplankton records are based on morphological identification using li ...
DOI:
10.1080/00288330.2019.1626746

24. Contamination status of lipophilic marine toxins in shellfish samples from the Bohai Sea, China

Author:
Yang Liu; Ren-Cheng Yu; Fan-Zhou Kong; Chen Li; Li Dai; Zhen-Fan Chen; Hui-Xia Geng; Ming-Jiang Zhou
Source:
Environmental pollution 2019 v.249 pp. 171-180
ISSN:
0269-7491
Subject:
Dinophysis acuminata; Dinophysis fortii; Gonyaulax; Prorocentrum; aquaculture; azaspiracid; clams; lipophilicity; liquid chromatography; monitoring; mussels; okadaic acid; oysters; poisonous algae; scallops; seafoods; seasonal variation; shellfish; tandem mass spectrometry; yessotoxin; China; Yellow Sea
Abstract:
... Lipophilic marine toxins in shellfish pose significant threats to the health of seafood consumers. To assess the contamination status of shellfish by lipophilic marine toxins in the Bohai Sea, nine species of shellfish periodically collected from five representative aquaculture zones throughout a year were analyzed with a method of liquid chromatography-tandem mass spectrometry (LC–MS/MS). Lipophi ...
DOI:
10.1016/j.envpol.2019.02.050

25. Devastating farmed abalone mortalities attributed to yessotoxin-producing dinoflagellates

Author:
Grant C. Pitcher; Charles J. Foord; Brett M. Macey; Lisa Mansfield; Anna Mouton; Marie E. Smith; Steven J. Osmond; Lynndal van der Molen
Source:
Harmful algae 2019 v.81 pp. 30-41
ISSN:
1568-9883
Subject:
Gonyaulax; abalone; chlorophyll; color; death; epithelial cells; epithelium; farms; financial economics; gills; harvesting; inflammation; light microscopy; mollusc culture; mortality; necrosis; phylogeny; plankton; poisonous algae; ribosomal DNA; yessotoxin; South Africa
Abstract:
... A large dinoflagellate bloom in Walker Bay (South Africa) in January 2017 impacted 3 land-based abalone farms resulting in the death of several million animals. Satellite-derived images of Chl-a from the Ocean and Land Colour Imager (OLCI) on board the European Space Agency Sentinel-3 A showed bloom initiation in late December 2016 and dispersal in mid-February 2017. The bloom was dominated by two ...
DOI:
10.1016/j.hal.2018.11.006

26. Distribution of harmful dinoflagellate cysts in the surface sediments of Daya Bay of the South China Sea and their relationship to environmental factors

Author:
Ying Li; Ya-Nan Tang; Ping-Ping Shen; Gang Li; Ye-Hui Tan
Source:
International biodeterioration & biodegradation 2019 v.139 pp. 44-53
ISSN:
0964-8305
Subject:
Alexandrium minutum; Gonyaulax; Gymnodinium; algal blooms; cluster analysis; environmental factors; particle size; risk; salinity; seawater; sediments; temperature; toxicity; South China Sea
Abstract:
... To investigate the distribution of dinoflagellate cyst and their relationship with environmental factors, surface sediments were collected from 14 stations of Daya Bay of the South China Sea. In total, 44 cyst species and 3 uncertain taxa were identified and the total abundance ranged from 79 to 819 cysts g−1 dry weight (DW), showing a decreasing trend from the north-west to the south-east of the ...
DOI:
10.1016/j.ibiod.2019.02.006

27. Reclassification of Gonyaulax verior (Gonyaulacales, Dinophyceae) as Sourniaea diacantha gen. et comb. nov.

Author:
Wei Zhang; Zhun Li; Kenneth Neil Mertens; Amélie Derrien; Vera Pospelova; M. Consuelo Carbonell-Moore; Siamak Bagheri; Kazumi Matsuoka; Hyeon Ho Shin; Haifeng Gu
Source:
Phycologia 2020 v.59 no.3 pp. 246-260
ISSN:
2330-2968
Subject:
Bayesian theory; Gonyaulax; genes; ribotypes; statistical analysis; taxonomic revisions; yessotoxin; Caspian Sea; Pacific Ocean
Abstract:
... was initially described as Amylax diacantha from Belgian coastal waters a century ago but its detailed morphology needed restudy. Here, we established nine strains of G. verior by germinating cysts or isolating cells from localities from the European Atlantic to the Caspian Sea and the Pacific Ocean. Both cyst and thecal morphology were examined by light and scanning electron microscopy. SSU, LSU ...
DOI:
10.1080/00318884.2020.1735926

28. The occurrence of lipophilic toxins in shellfish from the Middle Adriatic Sea

Author:
Stanislava Talić; Dragan Škobić; Anita Dedić; Nikša Nazlić; Ivana Ujević; Anita Ivanković; Maja Pavela-Vrančić
Source:
Toxicon 2020 v.186 pp. 19-25
ISSN:
0041-0101
Subject:
Gonyaulax; Mytilus galloprovincialis; Prorocentrum; azaspiracid; decontamination; depuration; human health; lipophilicity; phytoplankton; seawater; shellfish; surveys; toxicity; yessotoxin; Adriatic Sea; Bosnia-Herzegovina; Croatia
Abstract:
... The first survey of the phycotoxin profile in mussels (Mytilus galloprovincialis) from the coastal waters of Bosnia and Herzegovina (The Bay of Neum, Middle Adriatic Sea) in correlation to the Makarska City Bay (Croatia, Middle Adriatic Sea) was conducted in 2017. Throughout the monitoring period, occasions of gymnodimine (GYM) and azaspiracid (AZA2) shellfish toxicity were recorded in concentrati ...
DOI:
10.1016/j.toxicon.2020.07.026

29. Dinoflagellates in tropical estuarine waters from the Maraú River, Camamu Bay, northeastern Brazil

Author:
Caio Ceza da Silva Nunes; Sylvia Maria Moreira Susini-Ribeiro; Kaoli Pereira Cavalcante
Source:
Check list 2019 v.15 no.5 pp. 951-963
ISSN:
1809-127X
Subject:
Dinophysis caudata; Gonyaulax; Prorocentrum; estuaries; plankton; rivers; shellfish; species richness; Brazil
Abstract:
... Dinoflagellates display great diversity in tropical regions and play an important role in the complex microbial food webs of marine and brackish environments. The goal of this study is to identify planktonic dinoflagellates and their distribution in the estuary of the Maraú River, Camamu Bay, state of Bahia, in a region with increasing use of shellfish farming. Samples were carried out monthly fro ...
DOI:
10.15560/15.5.951

30. Expanding known dinoflagellate distributions: investigations of slurry cultures from Caspian Sea sediment

Author:
Jane Lewis; Joe D. Taylor; Klaire Neale; Suzanne A.G. Leroy
Source:
Botanica marina 2018 v.61 no.1 pp. 21-31
ISSN:
1437-4323
Subject:
Gonyaulax; Gymnodinium; plankton; sediments; slurries; Caspian Sea
Abstract:
... To investigate the disparity between plankton and cyst records, sediment slurry cultures were used to isolate the motile stage of dinoflagellates from Caspian Sea sediment. This has resulted in new records for this area of Kryptoperidinium foliaceum, Gymnodinium aureolum and Woloszynskia sp. and for the cyst record, Scrippsiella acuminata. Two Gonyaulax species were isolated, one was identified as ...
DOI:
10.1515/bot-2017-0041

31. Gonyaulax whaseongensis sp. nov. (Gonyaulacales, Dinophyceae), a new phototrophic species from Korean coastal waters

Author:
An Suk Lim; Hae Jin Jeong; Ji Eun Kwon; Sung Yeon Lee; Ji Hye Kim
Source:
Journal of phycology 2018 v.54 no.6 pp. 923-928
ISSN:
0022-3646
Subject:
Gonyaulax; coastal water; new species; nucleotide sequences; phylogeny; plankton; ribosomal DNA; scanning electron microscopy; Korean Peninsula
Abstract:
... The planktonic phototrophic dinoflagellate Gonyaulax whaseongensis sp. nov., isolated from coastal waters of western Korea, was described from living and fixed cells under light and scanning electron microscopy, and its rDNA was sequenced. Gonyaulax whaseongensis had a plate formula of 2pr, 4′, 6′′, 6c, 6′′′, 1p, and 1′′′′ with S‐type ventral organization like the other species in the genus. Howev ...
DOI:
10.1111/jpy.12792

32. Harmful phytoplankton in the Beagle Channel (South America) as a potential threat to aquaculture activities

Author:
Gastón O. Almandoz; Adrián O. Cefarelli; Soledad Diodato; Nora G. Montoya; Hugo R. Benavides; Mario Carignan; Marcelo Hernando; Elena Fabro; Katja Metfies; Nina Lundholm; Irene R. Schloss; Marcela Álvarez; Martha E. Ferrario
Source:
Marine pollution bulletin 2019 v.145 pp. 105-117
ISSN:
0025-326X
Subject:
Alexandrium catenella; Alexandrium tamarense; Azadinium; Bacillariophyceae; Dinophysis acuminata; Gonyaulax; algal blooms; biomass; domoic acid; microalgae; mollusc culture; neurotoxins; phylogeny; phytoplankton; poisonous algae; taxonomy; toxicity; water pollution; South America
Abstract:
... The Beagle Channel is a remote subantarctic environment where mussel aquaculture initiatives have existed since the early 1990s. Here we analyze phytoplankton biomass and composition, and the occurrence of harmful microalgae species and their toxins at three sites during the period 2015–2016. The occurrence of potentially harmful algae was observed throughout the study period, including toxigenic ...
DOI:
10.1016/j.marpolbul.2019.05.026

33. Introduction to Spiniferites Mantell 1850 special issue

Author:
Kenneth Neil Mertens; Consuelo Carbonell-Moore
Source:
Palynology 2018 v.42 no.sup1 pp. 1-9
ISSN:
1558-9188
Subject:
Gonyaulax; cell structures; taxonomy
Abstract:
... The first chapter of this special issue introduces the proceedings of two workshops concerning the cyst-based genus Spiniferites Mantell 1850. The historical background of the cyst-based genus Spiniferites, its closely related genera and the theca-based genus Gonyaulax Diesing 1866 is presented here. ...
DOI:
10.1080/01916122.2018.1465741

34. Linking biological and geological data on dinoflagellates using the genus Spiniferites as an example: the implications of species concepts, taxonomy and dual nomenclature

Author:
Marianne Ellegaard; Martin J. Head; Gerard J.M. Versteegh
Source:
Palynology 2018 v.42 no.sup1 pp. 221-230
ISSN:
1558-9188
Subject:
DNA; Gonyaulax; fossils; models; phenotype; phylogeny; taxonomy; traditions; trees
Abstract:
... Dinoflagellates encompass two taxonomic systems (dual taxonomy) reflected by separate traditions of nomenclature: one based mainly on living motile stages, and the other mainly on fossil cysts (dual nomenclature). Modern cysts may therefore bear two names if their life cycle is known. There have been attempts to rationalize this duality, but at species and genus level this has been largely unfruit ...
DOI:
10.1080/01916122.2018.1465732

35. Pentaplacodinium saltonense gen. et sp. nov. (Dinophyceae) and its relationship to the cyst-defined genus Operculodinium and yessotoxin-producing Protoceratium reticulatum

Author:
Kenneth Neil Mertens; M. Consuelo Carbonell-Moore; Vera Pospelova; Martin J. Head; Andrea Highfield; Declan Schroeder; Haifeng Gu; Karl B. Andree; Margarita Fernandez; Aika Yamaguchi; Yoshihito Takano; Kazumi Matsuoka; Elisabeth Nézan; Gwenael Bilien; Yuri Okolodkov; Kazuhiko Koike; Mona Hoppenrath; Maya Pfaff; Grant Pitcher; Abdulrahman Al-Muftah; André Rochon; Po Teen Lim; Chui Pin Leaw; Zhen Fei Lim; Marianne Ellegaard
Source:
Harmful algae 2018 v.71 pp. 57-77
ISSN:
1568-9883
Subject:
Cenozoic era; Gonyaulax; encystment; excystation; fossils; internal transcribed spacers; monophyly; new species; niches; plankton; poisonous algae; polymerase chain reaction; ribosomal DNA; sediments; topology; yessotoxin; Hawaii; Malaysia; South Africa
Abstract:
... Strains of a dinoflagellate from the Salton Sea, previously identified as Protoceratium reticulatum and yessotoxin producing, have been reexamined morphologically and genetically and Pentaplacodinium saltonense n. gen. et sp. is erected to accommodate this species. Pentaplacodinium saltonense differs from Protoceratium reticulatum (Claparède et Lachmann 1859) Bütschli 1885 in the number of precing ...
DOI:
10.1016/j.hal.2017.12.003

36. Phycotoxins in scallops (Patinopecten yessoensis) in relation to source, composition and temporal variation of phytoplankton and cysts in North Yellow Sea, China

Author:
Hai-Yan Wu; Qing-Shan Luan; Meng-Meng Guo; Hai-Feng Gu; Yu-Xiu Zhai; Zhi-Jun Tan
Source:
Marine pollution bulletin 2018 v.135 pp. 1198-1204
ISSN:
0025-326X
Subject:
Alexandrium; Azadinium; Dinophysis fortii; Gambierdiscus toxicus; Gonyaulax; Mizuhopecten yessoensis; aquaculture; azaspiracid; domoic acid; microalgae; okadaic acid; phycotoxins; phytoplankton; scallops; surveys; temporal variation; toxicity; water pollution; China; Korean Peninsula; Yellow Sea
Abstract:
... The North Yellow Sea is a major aquaculture production area for the scallop Patinopecten yessoensis. In this study, the temporal and spatial variation of phycotoxins in scallops, phytoplankton, and their cysts were analyzed during a survey conducted from June 2011 to April 2012 around Zhangzi Island. The study area is a semi-enclosed epicontinental sea surrounded by the Shandong Peninsula, the Lia ...
DOI:
10.1016/j.marpolbul.2018.08.045

37. Phylogenetic analysis and yessotoxin profiles of Gonyaulax spinifera cultures from the Benguela Current upwelling system

Author:
Chibo Chikwililwa; Pearse McCarron; Joanna J. Waniek; Detlef E. Schulz-Bull
Source:
Harmful algae 2019 v.85 pp. 101626
ISSN:
1568-9883
Subject:
Gonyaulax; algal blooms; coasts; euphotic zone; hydroxylation; liquid chromatography; mass spectrometry; molecular genetics; oceans; phylogeny; phytoplankton; poisonous algae; primary productivity; toxicity; yessotoxin; Italy; Namibia; New Zealand
Abstract:
... The Benguela Current in the Atlantic is one of the four major upwelling systems on the Eastern boundary of the world ocean. Thus the coastal regions off Namibia are prone to high primary productivity that can lead to Harmful Algae Blooms as this nutrient rich water reaches the euphotic zone. Yessotoxins (YTXs) produced by G. spinifera were detected in Namibian phytoplankton field samples in 2011. ...
DOI:
10.1016/j.hal.2019.101626

38. Quantitative biostratigraphical ranges of some late Cenozoic species of the dinoflagellate genus Spiniferites and taxonomic considerations

Author:
Laurent Londeix
Source:
Palynology 2018 v.42 no.sup1 pp. 203-220
ISSN:
1558-9188
Subject:
Cenozoic era; Gonyaulax; extinct species; genome; morphs; phylogeny; trees
Abstract:
... A new quantitative biostratigraphical method, based on an ‘index of stratigraphical abundance’ (ISA), has been used to refine the stratigraphical range of 50 dinoflagellate cyst taxa. Most of these correspond to Quaternary representatives of Achomosphaera or Spiniferites. Some extinct taxa are also discussed when their morphology is close to that of recent species (e.g. Spiniferites lenzii, S. twi ...
DOI:
10.1080/01916122.2018.1465731

39. Ship traffic and the introduction of diatoms and dinoflagellates via ballast water in the port of Annaba, Algeria

Author:
Radhia Cheniti; André Rochon; Hocine Frihi
Source:
Journal of sea research 2018 v.133 pp. 154-165
ISSN:
1385-1101
Subject:
Actinoptychus; Alexandrium tamarense; Asteromphalus; Bacillariophyceae; Coscinodiscus; Dinophysis acuminata; Gonyaulax; Gymnodinium; Prorocentrum; Thalassiosira; ballast water; monitoring; mortality; phytoplankton; ships; tanks; toxicity; traffic; water management; Algeria
Abstract:
... We present here the first study on the role of ship traffic in the introduction of potentially harmful and/or non-indigenous species in the port of Annaba (Algeria). A total of 25 ships of two different types (general cargo and bulk carriers) were sampled and separated into two categories: oceanic and Mediterranean ships. We estimated propagule pressure of high-risk coastal phytoplankton delivered ...
DOI:
10.1016/j.seares.2017.07.008

40. Should Gonyaulax hyalina and Gonyaulax fragilis (Dinophyceae) remain two different taxa?

Author:
M. Consuelo Carbonell-Moore; Kenneth Neil Mertens
Source:
Phycologia 2019 v.58 no.6 pp. 685-689
ISSN:
2330-2968
Subject:
Gonyaulax; fields; oceans; sampling
Abstract:
... Escalera et al. (2018. Phycologia 57: 453–464) concluded that Gonyaulax hyalina and G. fragilis were the same species. Here, the morphologies of G. hyalina and G. fragilis were restudied in field samples from different parts of the World Ocean. Results showed that Escalera et al. did not observe G. fragilis, as all strains used in their study belong to one species, G. hyalina. In consequence, it i ...
DOI:
10.1080/00318884.2019.1663477

41. Structure Elucidation and Relative Toxicity of (24R)-24-Hydroxyyessotoxin from a Namibian Isolate of Gonyaulax spinifera

Author:
Isabelle Rajotte; Cheryl Rafuse; Elliott J. Wright; John C. Achenbach; Lee D. Ellis; Pearse McCarron
Source:
Journal of natural products 2019 v.82 no.7 pp. 1945-1952
ISSN:
1520-6025
Subject:
Danio rerio; Gonyaulax; biomass; hydroxylation; liquid chromatography; mass spectrometry; nuclear magnetic resonance spectroscopy; solvents; toxicity; yessotoxin
Abstract:
... Liquid chromatography–high-resolution mass spectrometry (LC-HRMS) analysis of a Namibian strain of Gonyaulax spinifera showed the presence of a number of yessotoxins (YTXs). Principal among these were YTX (1), homoYTX (2), and a tentative hydroxylated analogue that did not correspond to any previously confirmed YTX structures. Culturing the G. spinifera strain afforded sufficient biomass for purif ...
DOI:
10.1021/acs.jnatprod.9b00318

42. Taxonomic revision of Spiniferites elongatus (the resting stage of Gonyaulax elongata) based on morphological and molecular analyses

Author:
Nicolas Van Nieuwenhove; Éric Potvin; Maija Heikkilä; Vera Pospelova; Kenneth Neil Mertens; Edwige Masure; Małgorzata Kucharska; Eun Jin Yang; Nicolas Chomérat; Marek Zajaczkowski
Source:
Palynology 2018 v.42 no.sup1 pp. 111-134
ISSN:
1558-9188
Subject:
Gonyaulax; Miocene epoch; environmental factors; genetic analysis; islands; morphometry; morphospecies; morphs; ribosomal RNA; sediment traps; sediments; taxonomic revisions; Barents Sea; Beaufort Sea; Hudson Bay
Abstract:
... We restudied the morphological complex comprising the cyst-based species Spiniferites elongatus/Spiniferites frigidus/Rottnestia amphicavata. We reviewed existing studies, and acquired new morphometric measurements of recent cysts from across the Northern Hemisphere, scanning electron microscopy (SEM) observations of cysts from Barents Sea surface sediments, and genetic analyses of cysts from the ...
DOI:
10.1080/01916122.2018.1465736

43. A checklist of the benthic and epiphytic marine dinoflagellates of New Zealand, including Rangitāhua/Kermadec Islands

Author:
Lesley Rhodes; Kirsty F. Smith
Source:
New Zealand journal of marine and freshwater research 2019 v.53 no.2 pp. 258-277
ISSN:
1175-8805
Subject:
Alexandrium; Amphidinium; Azadinium; Bacillariophyceae; Blastodinium; Crypthecodinium; Dinophysis; Gambierdiscus; Gonyaulax; Gymnodinium; Heterocapsa; Karenia; Pfiesteria; Prorocentrum; Symbiodinium; algal blooms; ciguatera; epiphytes; fish; high-throughput nucleotide sequencing; islands; microscopy; new geographic records; plankton; poisoning; sediments; species diversity; toxicity; toxins; New Zealand
Abstract:
... New Zealand benthic and epiphytic dinoflagellate records increased in recent years as harmful algal bloom research increased. This was largely due to risk assessments of micro-algal biotoxins for the seafood industry and concerns regarding ciguatera fish poisoning in humans from toxic finfish. High-throughput sequencing enabled the detection of dinoflagellate species that were previously overlooke ...
DOI:
10.1080/00288330.2018.1492425

44. Cyst‐Theca Relationship and Phylogenetic Position of Impagidinium caspienense Incubated from Caspian Sea Surface Sediments: Relation to Gonyaulax baltica and Evidence for Heterospory within Gonyaulacoid Dinoflagellates

Author:
Kenneth N. Mertens; Yoshihito Takano; Haifeng Gu; Siamak Bagheri; Vera Pospelova; Anna J. Pieńkowski; Suzanne A. G. Leroy; Kazumi Matsuoka
Source:
journal of eukaryotic microbiology 2017 v.64 no.6 pp. 829-842
ISSN:
1066-5234
Subject:
Gonyaulax; genetic factors; monophyly; morphs; polymerase chain reaction; ribosomal DNA; salinity; sediments; Caspian Sea
Abstract:
... We investigate the cyst‐theca relationship of Impagidinium caspienense. Through an incubation experiment, we succeeded in examining the motile stage. Additional molecular analysis of single‐cyst PCR (LSU and SSU rDNA) reveal that the cyst is related to the species Gonyaulax baltica Ellegaard et al. (). The ability of this species to belong to two types of cyst‐based genera (spiniferate and impagid ...
DOI:
10.1111/jeu.12417

45. Dinoflagellate cyst abundance is positively correlated to sediment organic carbon in Sydney Harbour and Botany Bay, NSW, Australia

Author:
Chang Tian; Martina A. Doblin; Katherine A. Dafforn; Emma L. Johnston; Haiyan Pei; Wenrong Hu
Source:
Environmental science and pollution research international 2018 v.25 no.6 pp. 5808-5821
ISSN:
0944-1344
Subject:
Alexandrium catenella; Gonyaulax; algal blooms; cadmium; chromium; copper; correlation; estuaries; habitats; heavy metals; iron; lead; manganese; microalgae; nickel; organic carbon; paralytic shellfish poisoning; plankton; polycyclic aromatic hydrocarbons; risk management; rivers; sediment contamination; sediments; sexual reproduction; species diversity; zinc; New South Wales
Abstract:
... There is growing public concern about the global expansion of harmful algal bloom species (HABs), with dinoflagellate microalgae comprising the major portion of the harmful taxa. These motile, unicellular organisms have a lifecycle involving sexual reproduction and resting cyst formation whereby cysts can germinate from sediments and ‘seed’ planktonic populations. Thus, investigation of dinoflagel ...
DOI:
10.1007/s11356-017-0886-1

46. Do the levels of industrial pollutants influence the distribution and abundance of dinoflagellate cysts in the recently-deposited sediment of a Mediterranean coastal ecosystem?

Author:
Habiba Zmerli Triki; Mohamed Laabir; Céline Lafabrie; Dhafer Malouche; Chrystelle Bancon-Montigny; Catherine Gonzalez; Alan Deidun; Olivier Pringault; Ons Kéfi Daly-Yahia
Source:
Science of the total environment 2017 v.595 pp. 380-392
ISSN:
0048-9697
Subject:
Alexandrium catenella; Alexandrium minutum; Gonyaulax; Prorocentrum; cadmium; chromium; coastal water; copper; ecosystems; heavy metals; mercury; models; nickel; pollutants; silt; toxicity; water content
Abstract:
... We studied the relationships between sediment industrial pollutants concentrations, sediment characteristics and the dinoflagellate cyst abundance within a coastal lagoon by investigating a total of 55 sampling stations within the Bizerte lagoon, a highly anthropized Mediterranean ecosystem. The sediment of Bizerte lagoon is characterized by a high dinocyst abundance, reaching a maximum value of 2 ...
DOI:
10.1016/j.scitotenv.2017.03.183

47. Gonyaulax hyalina and Gonyaulax fragilis (Dinoflagellata), two names associated with ‘mare sporco’, indicate the same species

Author:
Laura Escalera; Anna Italiano; Rossella Pistocchi; Marina Montresor; Adriana Zingone
Source:
Phycologia 2018 v.57 no.4 pp. 453-464
ISSN:
2330-2968
Subject:
Gonyaulax; light microscopy; mucilages; summer; Adriatic Sea; Mediterranean Sea; New Zealand
Abstract:
... Aggregates of mucilaginous material have been at times observed in coastal and oceanic sea waters. In the Adriatic Sea (Mediterranean Sea), these events have been known since the 18th century as ‘mare sporco’ (= dirty sea), and in recent years, they have been associated with the dinoflagellate Gonyaulax fragilis; whereas, in New Zealand mucilage events were linked to Gonyaulax hyalina. In summer 2 ...
DOI:
10.2216/17-64.1

48. Seasonal variability of Protoceratium reticulatum and yessotoxins in Japanese scallop Patinopecten yessoensis in northern Yellow Sea of China

Author:
Lei Liu; Ning Wei; Yuxiao Gou; Dongmei Li; Yubo Liang; Daoyan Xu; Renyan Liu; Shifeng Sui; Tianjiu Jiang
Source:
Toxicon 2017 v.139 pp. 31-40
ISSN:
0041-0101
Subject:
Gonyaulax; Mizuhopecten yessoensis; hepatopancreas; phylogeny; scallops; seasonal variation; sediments; sowing; toxicity; toxins; China; Yellow Sea
Abstract:
... This paper reports a toxic strain of Protoceratium reticulatum, its morphology, phylogeny, yessotoxins (YTXs) production and abundance in northern Yellow Sea of China from 2011 to 2015 was investigated. YTXs in hepatopancreas and edible parts of bottom sowing cultured Japanese scallop Patinopecten yessoensis in this sea area were determined weekly for 5 years. Other potential producers of YTXs, Go ...
DOI:
10.1016/j.toxicon.2017.09.015

49. Feeding strategy of Downs herring larvae (Clupea harengus L.) in the English Channel and North Sea

Author:
Jeremy Denis; Carole Vallet; Lucie Courcot; Valérie Lefebvre; Josselin Caboche; Elvire Antajan; Paul Marchal; Christophe Loots
Source:
Journal of sea research 2016 v.115 pp. 33-46
ISSN:
1385-1101
Subject:
Chaetoceros; Clupea harengus; Copepoda; Coscinodiscus; Dinophysis; Gonyaulax; Nitzschia; Prorocentrum; Thalassiosira; diet study techniques; digestive system; eggs; feeding methods; herring; invertebrates; nauplii; omnivores; protists; scanning electron microscopy; surveys; winter; English Channel; North Sea
Abstract:
... This study aims to characterize the larval feeding strategy of the Downs sub-population of North Sea herring (Clupea harengus L.). Diet composition, vacuity rate and prey selectivity of larvae from 8 to 15mm collected during the International Bottom Trawl Survey (IBTS) - MIK sampling from 2008 to 2013 were assessed by direct observation of their gut contents using Scanning Electron Microscopy (SEM ...
DOI:
10.1016/j.seares.2016.07.003

50. Gonyaulax taylorii, a new yessotoxins-producer dinoflagellate species from Chilean waters

Author:
Gonzalo Álvarez; Eduardo Uribe; Jorge Regueiro; Juan Blanco; Santiago Fraga
Source:
Harmful algae 2016 v.58 pp. 8-15
ISSN:
1568-9883
Subject:
Gonyaulax; holotypes; phytoplankton; scanning electron microscopy; summer; surveys; yessotoxin
Abstract:
... In summer 2009, during a survey in Bahía Mejillones, a dense bloom of a dinoflagellate from the genus Gonyaulax was detected, as well as the presence of yessotoxin. Phytoplankton samples were analyzed in detail by light and scanning electron microscopy (SEM), revealing the presence of Gonyaulax taylorii. Morphological examination showed that the cells in the bloom fit in Gonyaulax jollifei Murray ...
DOI:
10.1016/j.hal.2016.07.006