Recurrent Pseudo-nitzschia calliantha (Bacillariophyceae) and Alexandrium insuetum (Dinophyceae) winter blooms induced by agricultural runoff

Spatharis, Sofie; Danielidis, Daniel B.; Tsirtsis, George

doi:10.1016/j.hal.2007.04.006

Cited by 68 publications

(61 citation statements)

References 45 publications

(59 reference statements)

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Hasle et al, 1996;Churro et al, 2009;Lundholm et al, 2010) and is frequently reported as abundant or dominating in coastal areas in certain seasons (Fehling et al, 2004b(Fehling et al, , 2006Zingone et al, 2006;Spatharis et al, 2007;Besiktepe et al, 2008;Quijano-Scheggia et al, 2008;Orive et al, 2010). There are few studies on long-term trends of occurrence of Pseudonitzschia.…”

Section: Europementioning

confidence: 99%

“…Similarly, upwelling regions off the coast of Portugal contain high numbers of Pseudonitzschia cells, which are used as upwelling indicators during spring and summer (Moita, 2001;Loureiro et al, 2005). Riverine inputs have stimulated toxic Pseudo-nitzschia blooms in many regions and are characterized by lower salinities and higher temperatures than upwelling zones (Smith et al, 1990;Horner and Postel, 1993;Dortch et al, 1997;Scholin et al, 2000;Spatharis et al, 2007;Kudela et al, 2008). A distinction between nutrients in upwelling and river plumes is that riverine inputs are likely the result of anthropogenic nutrient loading, including agricultural runoff and sewage.…”

Section: Ecological Profile Of Pseudo-nitzschia Speciesmentioning

confidence: 99%

“…Pseudo-nitzschia abundance in the plume of the Yangtze River was positively correlated to NO 3 À and PO 4 3À concentrations (Zou et al, 1993). In the South China Sea, Pseudo-nitzschia abundances responded to increased land runoff after rainfall (Qi et al, 1994) and in the Aegean Sea, Greece, a winter bloom of P. calliantha appeared to be induced by agricultural runoff shortly after a strong rainfall event (Spatharis et al, 2007). An analysis of P. delicatissima and P. pseudodelicatissima dynamics and environmental parameters in the Bay of Fundy, Canada, showed a strong relationship between NO 3 À and NO 2 À concentrations and the abundance of these species (Kaczmarska et al, 2007).…”

Section: Ecological Profile Of Pseudo-nitzschia Speciesmentioning

confidence: 99%

See 2 more Smart Citations

Pseudo-nitzschia physiological ecology, phylogeny, toxicity, monitoring and impacts on ecosystem health

et al. 2012

View full text Add to dashboard Cite

Section: Europementioning

confidence: 99%

Section: Ecological Profile Of Pseudo-nitzschia Speciesmentioning

confidence: 99%

Section: Ecological Profile Of Pseudo-nitzschia Speciesmentioning

confidence: 99%

See 1 more Smart Citation

Pseudo-nitzschia physiological ecology, phylogeny, toxicity, monitoring and impacts on ecosystem health

et al. 2012

View full text Add to dashboard Cite

“…In Italy, P. calliantha and P. delicatissima (CAROPPO et al 2005, ZINGONE et al 2006, P. galaxiae, P. multistriata (SARNO and DAHLMANN 2000), ORSINI et al 2002, CERINO et al 2005, ZINGONE et al 2006, P. fraudulenta (ZINGONE et al 2006) were identified. Pseudo-nitzschia calliantha (SPATHARIS et al 2007) was identified in Greece. In the southern Black Sea (BARGU et al 2002) and in the eastern Adriatic Sea, P. calliantha, P. fraudulenta, P. pungens, P. pseudodelicatissima, P. manii (LJUBE were identified.…”

Section: Introductionmentioning

confidence: 99%

Pseudo-nitzschia Peragallo (Bacillariophyceae) diversity and domoic acid accumulation in tuberculate cockles and sweet clams in M’diq Bay, Morocco

Leblad¹,

Lundholm²,

Goux³

et al. 2013

Acta Botanica Croatica

View full text Add to dashboard Cite

-The diversity of Pseudo-nitzschia (Bacillariophyceae) and accumulation of the neurotoxin domoic acid (DA) in two types of shellfish; tuberculate cockles (Acanthocardia tuberculata) and sweet clams (Challista chione) was explored in M'diq Bay, Morocco during 2007. The highest abundances of Pseudo-nitzschia were found during the period from March to October, with peaks occurring in May and September. Toxin analysis showed an accumulation of domoic acid in shellfish sampled during spring and autumn. The maximum toxin concentration was 4.9 mg DA g -1 of the whole tissue recorded in sweet clam during spring. Using transmission electron microscopy, thirteen Pseudo-nitzschia species were identified, eight of which are known as producers of domoic acid: P. multistriata, P. cuspidata, P. galaxiae, P. multiseries, P. pseudodelicatissima, P. pungens var. aveirensis, P. calliantha and P. fraudulenta. The five non-toxic species observed were P. subpacifica, P. arenysensis, P. dolorosa, P. subfraudulenta, and P. cf. caciantha.

show abstract

“…blooms, sometimes representing an equivalent or higher algal biomass (e.g. Fehling et al 2006, Mafra et al 2006, Spatharis et al 2007, the low levels of DA commonly found in oysters could also be the result of an effective mechanism of particle selection. Pre-ingestive selection may occur on the gills and/or labial palps of bivalves (Ward et al 1994(Ward et al , 1998a and be affected by seston concentration (Barillé et al 1993), particle morphology and size (Ward et al 1998b), particle quality (i.e.…”

Section: Introductionmentioning

confidence: 99%

Mechanisms contributing to low domoic acid uptake by oysters feeding on Pseudo-nitzschia cells. II. Selective rejection

Mafra¹,

Bricelj²,

Ward³

2009

Aquat. Biol.

View full text Add to dashboard Cite

Oysters accumulate relatively low levels of domoic acid (DA) compared to other bivalves. Mafra et al. (2009, in this Theme Section) identified feeding mechanisms of oysters that may lead to low DA accumulation during monospecific blooms of Pseudo-nitzschia multiseries. However, several different species of Pseudo-nitzschia, as well as other diatoms and flagellates, may co-occur during a bloom. Therefore, the present study investigates pre-ingestive feeding processes that operate when oysters Crassostrea virginica are exposed to mixed phytoplankton assemblages containing P. multiseries of varying cell length. Guided by video-endoscopy, material transported along the ventral and dorsal gill tracts was sampled and analyzed to determine the site for sorting of microalgae on the pallial organs. There was no preferential rejection of P. multiseries in pseudofeces when oysters were exposed to the alga in a mixed suspension with other diatom species (Thalassiosira weissflogii or Chaetoceros muelleri). In contrast, P. multiseries was preferentially rejected when mixed with the flagellates Isochrysis galbana or Rhodomonas lens, suggesting a qualitative mechanism for particle sorting. This occurred on the gills, followed by further selection on the palps. Oysters also preferentially rejected larger P. multiseries cells (82 to 90 µm) relative to smaller ones (24 to 28 µm) on the gills, while no further selection based on size occurred on the palps. This effect is attributed to the fact that P. multiseries cells with a length that exceeds the width of the principal filament aperture (ca. 68 µm) are more likely directed to the ventral tract and rejected in pseudofeces. These findings offer an additional explanation for the relatively low DA levels found in oysters during natural Pseudo-nitzschia spp. blooms.

show abstract

Recurrent Pseudo-nitzschia calliantha (Bacillariophyceae) and Alexandrium insuetum (Dinophyceae) winter blooms induced by agricultural runoff

Cited by 68 publications

References 45 publications

Pseudo-nitzschia physiological ecology, phylogeny, toxicity, monitoring and impacts on ecosystem health

Pseudo-nitzschia physiological ecology, phylogeny, toxicity, monitoring and impacts on ecosystem health

Pseudo-nitzschia Peragallo (Bacillariophyceae) diversity and domoic acid accumulation in tuberculate cockles and sweet clams in M’diq Bay, Morocco

Mechanisms contributing to low domoic acid uptake by oysters feeding on Pseudo-nitzschia cells. II. Selective rejection

Contact Info

Product

Resources

About