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Alexandrium catenella and Alexandrium tamarense in the North Lake of Tunis: bloom characteristics and the occurrence of paralytic shellfish toxin
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: Z Armi --- , Tunisie A Milandri --- , Italie S Turki --- , Tunisie B Hajjem --- , TunisieThe dinoflagellate Alexandrium is thought to be the main species responsible for paralytic shellfish poisoning (PSP) throughout the world. The genus Alexandrium is present in unusually high diversity in the North Lake of Tunis, a productive Mediterranean fishing and shellfish... -
Inter- and intra-specific variability in morphogenetics and toxin composition of Alexandrium spp. in Irish coastal waters
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: N Touzet JM Franco R RaineAlexandrium spp. usually occur in low densities during summer along the south and west coasts of Ireland. Field investigations revealed the presence of morphologically similar strains of A. tamarense, A. tamutum and A. minutum. Several strains were cultured, derived through... -
Temporal and spatial variability in the characteristics of Alexandrium fundyense blooms in the coastal zone of the Bay of Fundy, eastern Canada
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: FH Page JL Martin A Hanke MM LeGresleyThe abundance of the dinoglagellate Alexandrium fundyense has been monitored at four locations in the Bay of Fundy, eastern Canada, at weekly to monthly intervals since 1988. The date of first appearance of A. fundyense varied each year from Day... -
Alexandrium in the Black Sea — identity, ecology and PSP toxicity
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: A Vershinin S Morton T Leighfield S Pankov L Smith M Quilliam J RamsdellAlexandrium cf. tamarense was recorded for the first time along the north-eastern coast of the Black Sea in July 2001. Since then, it has been observed annually between May and October. A maximum density of Alexandrium spp. of 9 000... -
Fibre optic microarrays for the detection and enumeration of harmful algal bloom species
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: DM Anderson D Kulis D Erdner S Ahn D WaltHarmful algal blooms (HABs) are a serious threat to coastal resources, causing impacts ranging from the contamination of seafood products with potent toxins to mortalities of wild and farmed fish and other marine animals. As the threat from HABs has... -
Monitoring of Alexandrium species in the Mediterranean Sea using a combined filter system–PCR assay detection method
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: A Penna G Fusco E Bertozzini MG Giacobbe M Vila L Galluzzi E Garcés A Lugliè M Masò M MagnaniA filter system for collecting phytoplankton cells coupled to a target species-specific polymerase chain reaction (PCR) assay was performed on a spatial and temporal series of net and seawater samples as part of the Mediterranean Sea EU project Strategy (EVK-CT-2001-00046)... -
Cysts of Alexandrium catenella on the west coast of South Africa: distribution and characteristics of germination
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: LB Joyce GC PitcherCysts of the toxic dinoflagellate Alexandrium catenella (Whedon and Kofoid) Balech were found in the sediments of the southern Namaqua shelf, on the west coast of South Africa, with a maximum recorded abundance of 238 cysts ml−1 wet sediment. Experimental... -
Cysts of potentially harmful dinoflagellates, with emphasis on the genus Alexandrium, in Sepetiba Bay (Brazil) during a port survey of GloBallast
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: VB Juliano VMT GarciaSepetiba Bay in south-eastern Brazil has been selected as a pilot demonstration site within the Global Ballast Water Management Programme (GloBallast; IMO/PNUD/GEF). As part of the port baseline survey, a series of 43 sediment cores was taken in triplicate in... -
Uptake and accumulation of ammonium by Alexandrium catenella during nutrient pulses
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: Y Collos M Lespilette A Vaquer M Laabir A PastoureaudField observations in Thau Lagoon, southern France, indicate that the growth of natural populations of Alexandrium catenella during blooms is limited by nitrogen and exhibits a storage rather than a growth response to an ammonium pulse. Therefore, ammonium uptake and... -
Feeding of the tintinnid ciliate Favella taraikaensis on the toxic dinoflagellate Alexandrium tamarense and the fate of prey toxins
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: T Kamiyama T Suzuki Y OkumuraTo establish the fate of paralytic shellfish poisoning (PSP) toxins in planktonic foodwebs, feeding activities of the planktonic ciliate Favella taraikaensis on the PSP-producing alga Alexandrium tamarense were examined in laboratory experiments and the toxin content in the ciliates was... -
Salmon mortalities associated with a bloom of Alexandrium fundyense in 2003 in the Bay of Fundy, and subsequent early warning approaches for industry
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: JL Martin MM LeGresley K Haya DH Sephton LE Burridge FH Page BD ChangIn early September 2003, >3.0 × 105 cells l−1 of Alexandrium fundyense were detected in close proximity to salmon aquaculture sites near Grand Manan Island in the Bay of Fundy, eastern Canada. High concentrations persisted throughout the month, peaking to... -
The distribution of dinoflagellate cyst assemblages in recent sediments of the Oualidia Lagoon, Morocco, with a focus on toxic species
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: K Chaira --- , Morocco H Rhinane --- , Morocco B Ennaffah --- , Morocco S Maimouni --- , Morocco R Sagou --- , Morocco S Loulad --- , Morocco A BenMhamed --- , Morocco A Agouzouk --- , Morocco S BenBrahim --- , Morocco E Masseret --- , France M Laabir --- , FranceHarmful 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...