Are crustaceans linked to the ciguatera food chain?

Kelly, Anita M.; Kohler, Christopher C.; Tindall, Donald R.

doi:10.1007/bf00005871

Cited by 39 publications

(44 citation statements)

References 28 publications

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“…Toxic dinoflagellates do not always kill the predator (Kelly et al 1992, PilleT et al 1995. Some bivalves and fish after ingesting toxigenic dinoflagellates concentrate phycotoxins in their tissues (see SHumWAy 1995).…”

Section: Introductionmentioning

confidence: 99%

Preliminary survey of potentially harmful dinoflagellates in Nigeria´s coastal waters.

Ajuzie¹,

Houvenaghel²

2009

Fottea

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Abstract:In many coastal states the presence and impacts of harmful dinoflagellates have been investigated and documented in the literature. Scientists and government officials in many countries routinely monitor their coastal waters for harmful algae in order to prevent harvesting of contaminated seafood. But this is not the case for Nigeria, a coastal state in the Gulf of Guinea, West Africa. The present work reports findings from a first attempt to monitor potentially harmful algae in the coastal waters of Nigeria. Samples were collected from specific locations that included a coastal sea, a lagoon, estuaries and creeks along Nigeria's coastline in November 1999 and April 2001. Potentially harmful dinoflagellates recorded during these periods included 3 Ceratium species, 5 Dinophysis species, 3 Gonyaulax species, 1 Gymnodinium sp, 1 Lingulodinium species, 4 Prorocentrum species and 1 Scrippsiella species. The potential ecological and human health risks associated with similar species in the literature are highlighted.

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Section: Introductionmentioning

confidence: 99%

Preliminary survey of potentially harmful dinoflagellates in Nigeria´s coastal waters.

Ajuzie¹,

Houvenaghel²

2009

Fottea

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“…Tilapia fed different stains of G. toxicus showed a differential response ranging from death within 24 h to abnormal swimming behavior, quiescence, loss of both equilibrium and appetite. Fish showing minimal toxicity recovered 21 d after the original dose was administered (Kelly et al 1992). These behaviors and signs are like those seen in diseased fish during the 1993-94 mortality (B.…”

mentioning

confidence: 72%

“…Experiments have clearly shown that the behaviour of crustaceans and fish changes after these organisms feed on either clguatoxic flesh or directly on G. toxicus cells. Fish show abnormal behaviours such as erratic movement, disorientation, blanching of skin, loss of both equilibrium and appetite (Davin et al 1986, 1988, Kohler et al 1989, Kelly et al 1992, Magnelia et al 1992. Tilapia fed different stains of G. toxicus showed a differential response ranging from death within 24 h to abnormal swimming behavior, quiescence, loss of both equilibrium and appetite.…”

mentioning

confidence: 99%

Tropical reef-fish disease outbreaks and mass mortalities in Florida, USA:what is the role of dietary biological toxins

Jh¹

1995

Dis. Aquat. Org.

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“…In the midst of toxic blooms, such indiscriminate grazers also feed on the toxic cells (White et al 1989) and, by so doing, become vectors of phycotoxins in aquatic food webs (e.g. White 1981;Boyer et al 1985;Robineau et al 1991;Kelly et al 1992). Grazers of toxic microalgae might also be killed by their phycotoxins (e.g.…”

Section: Introductionmentioning

confidence: 97%

“…Lush and Hallegraeff 1996). Predators that are killed by phycotoxins might also constitute a source of biotoxication for detritivors (Kelly et al 1992). Lush and Hallegraeff (1996) observed that the effects of toxic algal cells and their exudates on zooplankton and fish could have severe implications for aquaculture and the local marine environment in areas prone to recurrent toxic algal blooms.…”

Section: Introductionmentioning

confidence: 99%

Palatability and fatality of the dinoflagellate Prorocentrum lima to Artemia salina

Ajuzie

2007

J Appl Phycol

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Prorocentrum lima is a toxic alga that produces both intra-cellular and extra-cellular toxins, including okadaic acid (OA) and dinophysistoxins (DTXs). Nauplii of the brine shrimp Artemia salina were exposed to both the cell and cell-free culture medium of P. lima in order to test the hypotheses that the extra-cellular medium is toxic to brine shrimp and that the P. lima cell is palatable but fatal to it. Artemia cysts incubated in the cell-free medium hatched, but mortalities were recorded for nauplii that hatched in, and metanuaplii exposed to, test solutions (autoclaved filtered seawater + cell-free medium) that contained at least 50% of the cell-free medium. Animals exposed to cells of P. lima readily fed on the cells. Some, especially among the Day 1 nauplii, ingested only one cell before dying, while others ingested more than one cell, up to six cells in the case of Day 3 nauplii, before dying. Day 3 nauplii were readily and heavily impacted by the P. lima cells. Survival analysis was used to evaluate survivorship of Day 1 to Day 3 nauplii exposed to cells of P. lima. Estimates were made of tD50s for the different age groups. Comparisons of the tD50s showed that the tD50s for Day 1 and Day 2 nauplii did not vary significantly, but they each varied significantly from the tD50 for the Day 3 nauplii. The possible ecological implications of the findings are discussed.

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Are crustaceans linked to the ciguatera food chain?

Cited by 39 publications

References 28 publications

Preliminary survey of potentially harmful dinoflagellates in Nigeria´s coastal waters.

Preliminary survey of potentially harmful dinoflagellates in Nigeria´s coastal waters.

Tropical reef-fish disease outbreaks and mass mortalities in Florida, USA:what is the role of dietary biological toxins

Palatability and fatality of the dinoflagellate Prorocentrum lima to Artemia salina

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