Diarrhetic shellfish toxicity in relation to the abundance of Dinophysis spp. in the German Bight near Helgoland

Klöpper, Sascha; Scharek, Renate; Gerdts, Gunnar

doi:10.3354/meps259093

Cited by 37 publications

(21 citation statements)

References 22 publications

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“…Dinophysis acuta showed higher abundances and frequency in late winter (Figure 4) which differs from the data recorded by Caroppo, Congestri, and Bruno (2001) and Klöpper, Scharek, and Gerdts (2003). Correlation of abundance of D. acuta and salinity was significantly negative which indicates better growth in the period of increased freshwater input which differs from the data recorded by Ninčević et al (2008) where this species growth was higher when salinity is increased.…”

Section: Discussioncontrasting

confidence: 56%

Untitled

Drakulović¹,

Gvozdenovic²,

Joksimović³

et al. 2017

Turk. J. Fish. Aquat. Sci.

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The distribution of toxic and potentially toxic phytoplankton species in relation to environmental factors was investigated from November 2014 to April 2015 in Boka Kotorska Bay, in the south -eastern part of the Adriatic Sea. The RDA analysis of environmental parameters showed that the system is mostly temperature-driven. The phytoplankton community was mainly composed of diatoms and less with dinoflagellates. Pseudo-nitzschia was the dominant diatom, present in 88.40 % of samples, with a maximum (of 1.85 × 10 5 cells/l). Among toxic dinoflagellates, frequent were Dinophysis acuminata (with frequency of 33.33%), D. fortii (with frequency of 23.19%) and Prorocentrum cordatum (with frequency of 21.74%). The RDA analysis showed that diatoms correlated slightly positively with nutrients and negative correlation was recorded with temperature and salinity. Dinoflagellates showed strong positive association, indicating a positive correlation with oxygen concentration, chl a, SiO4 -and NO3 -concentrations and negative correlation with temperature and salinity.

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Section: Discussioncontrasting

confidence: 56%

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Drakulović¹,

Gvozdenovic²,

Joksimović³

et al. 2017

Turk. J. Fish. Aquat. Sci.

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“…Nothing is known about the chemicals released by lysed zooxanthellae, though homogenized cnidarian tissue (which tends to contaminate even the most thoroughly cleaned preparations of zooxanthellae) can occasionally cause rapid lysis of zooxanthellae (Sutton & Hoegh-Guldberg 1990). Moreover, the production of toxins by both free-living marine dinoflagellates (Turner & Tester 1997, Klopper et al 2003 and zooxanthellae (Nakamura et al 1995a,b) is well known. Therefore, while inoculation experiments such as the one described in the present paper are useful tools for looking at viral infection cycles, interpretation is hampered by our incomplete biochemical knowledge of the host animal and algal symbionts concerned.…”

Section: Infectivity Studies and Their Role In Viral Characterisationmentioning

confidence: 99%

Viruses: agents of coral disease?

Davy

Burchett²,

Dale³

et al. 2006

Dis. Aquat. Org.

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The potential role of viruses in coral disease has only recently begun to receive attention. Here we describe our attempts to determine whether viruses are present in thermally stressed corals Pavona danai, Acropora formosa and Stylophora pistillata and zoanthids Zoanthus sp., and their zooxanthellae. Heat-shocked P. danai, A. formosa and Zoanthus sp. all produced numerous virus-like particles (VLPs) that were evident in the animal tissue, zooxanthellae and the surrounding seawater; VLPs were also seen around heat-shocked freshly isolated zooxanthellae (FIZ) from P. danai and S. pistillata. The most commonly seen VLPs were tail-less, hexagonal and about 40 to 50 nm in diameter, though a diverse range of other VLP morphotypes (e.g. rounded, rod-shaped, droplet-shaped, filamentous) were also present around corals. When VLPs around heat-shocked FIZ from S. pistillata were added to non-stressed FIZ from this coral, they resulted in cell lysis, suggesting that an infectious agent was present; however, analysis with transmission electron microscopy provided no clear evidence of viral infection. The release of diverse VLPs was again apparent when flow cytometry was used to enumerate release by heat-stressed A. formosa nubbins. Our data support the infection of reef corals by viruses, though we cannot yet determine the precise origin (i.e. coral, zooxanthellae and/or surface microbes) of the VLPs seen. Furthermore, genome sequence data are required to establish the presence of viruses unequivocally. KEY WORDS: Viruses · Corals · Zooxanthellae· Coral disease · Coral health · StressResale or republication not permitted without written consent of the publisher

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“…These symptoms occur within 30 min to two hours after ingestion and in severe cases cause ataxia, muscle weakness, respiratory paralysis and death. The Toxic Exposure Surveillance System (TESS) of the American Association of Poison Control Centres has identified 10 illnesses of presumed puffer fish poisoning due to exposure from PSP after eating puffer fish from the area of Titusville, Florida, (Klöpper et al, 2003;Leikin and Paloucek, 1998;Lembeye et al, 1993;Lembeye, 1981;Luckas et al, 2005;MacKenzie et al, 1996;Mahoney et al, 1990). (Hua et al, 1996).…”

Section: Toxins Produced: Saxitoxinsmentioning

confidence: 99%

“…In the tropics and subtropics toxic dinoflagellates living on coral reefs are eaten by small herbivorous fish grazing on coral which in turn are eaten by larger carnivores. The poisons move up the food chain into the organs of larger top-order predators such as coral trout, red bass, chinaman fish, mackerels and moray eels and cause ciguatera fish poisoning, CFP, in people who eat these fish (Kim, 1999;Klöpper et al, 2003;Leikin, and Paloucek, 1998).…”

Section: Ciguatara Fish Poisoning (Cfp)mentioning

confidence: 99%

Marine biotoxins and its detection

Suresh¹,

Gauri²,

Desai³

et al. 2014

Afr. J. Environ. Sci. Technol.

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The incidences of intoxication due to the consumption of marine foods have been increasing in recent years. This is due to the presence of biotoxins in foods of marine origin. The biotoxins will be accumulated in the marine foods due to the consumption of toxic biota of marine origin. When this contaminated food is taken by the humans or animals, those toxins will be transferred to them causing intoxication and lethality. Among these intoxications, most of them are caused by the harmful algal blooms (HAB). In order to avoid the harmful effects from marine biotoxins, it is necessary to have the proper knowledge. In this manuscript, the different types of biotoxins, source of intoxication, characteristics of toxins, detection and control measures are discussed in detail.

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Diarrhetic shellfish toxicity in relation to the abundance of Dinophysis spp. in the German Bight near Helgoland

Abstract: Diarrhetic shellfish toxicity is caused by the accumulation of okadaic acid and its derivatives, which are produced by particular species of Dinophysis Ehrenberg 1839 and Prorocentrum Ehrenberg 1833 (Dinoflagellata).

Cited by 37 publications

References 22 publications

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Viruses: agents of coral disease?

Marine biotoxins and its detection

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