Gonyaulax

Gonyaulax

/Gony·au·lax/ (gon″e-aw´laks) a genus of dinoflagellates found in fresh, salt, or brackish waters, having yellow to brown chromatophores; it includes G. catanel´la, a poisonous species, which helps to form the destructive red tide in the ocean; see also under poison.

Gonyaulax

(go″nē-ō′laks″) [Gr. gony, knee + Gr. aulax, furrow]
A genus of dinoflagellates that causes certain shellfish that eat them to become toxic. It is one of the causes of red tides.

Gonyaulax

poisonous dinoflagellate which render shellfish eating them poisonous to animals eating the shellfish.
References in periodicals archive ?
Gonyaulax monilata: population growth and development of toxicity in cultures.
Sweeney tested the ability of different wavelengths of light--corresponding to different colors--to shift the circadian rhythm in the photosynthetic marine dinoflagellate Gonyaulax polyedra.
Balech (1974) used differences in the number and shape of cingular plates to separate Protoperidinium from Peridinium, and other taxa first described as species of Peridinium have been moved to other genera including Gymnodinium, Gonyaulax, Ceratium, irhompsodinium and Glochidinium based on differences from the plate pattern of P.
Finfish concentrate shellfish concentrate, marine mammal deaths Neurologie/neurotoxic Caribbean, [greater than or equal shellfish poisoning Gulf of Mexico to] brevetoxins, shellfish concentrate most common in Gulf States; marine mammal deaths Amnesic shellfish Canada/NE US, Domnoic acid poisoning Wash, Ore, Calif Shellfish concentrate (especially mussels); finfish concentrate Diarrheal shellfish Europe, Canada,Japan, New Okadaic acid poisoning Zealand, South America; organisms seen in US waters Condition Organism(s) Ciguatera fish Cambierdiscus toxicus poisoning and others Paralytic shellfish Gonyaulax tamarensis, poisoning Alexandrium spp.
Detection and quantification of melatonin in a dinoflagellate, gonyaulax polyedra: solutions to the problem of methoxyindole destruction in non-vertebrate material.
These species, in such genera as Gonyaulax and Gymnodinium, produce toxins in some species of bivalves living in the red tide seawater that are fatally toxic to man (Dale and Yentsch, 1978); other species of dinoflagellates do not.
In the ocean, the brownish, single-celled alga Gonyaulax polyedra puts on an unusual light show.
Toxic red tide in the Argentine Sea: phytoplankton distribution and survival of the toxic dinoflagellate Gonyaulax excavate in frontal area.
In the past, the dominant organisms responsible for red tides in the SCB have been the dinoflagellates Prorocentrum micans and Gonyaulax polyedra, and mortality of fish and invertebrates have been associated with red water of the latter (Brongersma-Sanders 1957).
It wasn't until 1937 that California researchers proved that PSP in local mussels originated in the toxic dinoflagellate Gonyaulax catenella.
For the dinoflagellate Gonyaulax tamarensis, it's a long timebetween wake-up calls.
A particularly extensive and intense bloom of the dinoflagellate Gonyaulax spinifera occurred on the west coast of Vancouver Island in September 1990.