Gonyaulax is a genus of dinoflagellates with the type species Gonyaulax spinifera (Claparède et Lachmann) Diesing. Gonyaulax belongs to red dinoflagellates and commonly causes red tides. It can produce yesotoxins: for example, strains of Gonyaulax spinifera from New Zealand are yessotoxin producers. [4]

Gonyaulax, genus of dinoflagellate algae (family Gonyaulacaceae) that inhabit marine, fresh, or brackish water. Several planktonic species are toxic and are sometimes abundant enough to colour water and cause the phenomenon called red tide, which may kill fish and other animals.

Gonyaulax is representative of a n important group of unicellular organisms, the Pyrrophyta (sometimes called Dinophyta). The common name for the group is the dinoflagellates. Like the Euglenophyta, the group contains both photosynthetic and non-photosynthetic forms.

Gonyaulax is representative of a n important group of unicellular organisms, the Pyrrophyta (sometimes called Dinophyta). The common name for the group is the dinoflagellates. Like the Euglenophyta, the group contains both photosynthetic and non-photosynthetic forms.

Description: Armored, ovoid to fusiform cells with chloroplasts. Some species form benthic cysts. Distinguished by descending cingulum up to 6x girdle width. Distribution: Widespread …

The dinoflagellate Gonyaulax polyedra produces brief flashes of light (<0.1 s) that originate from numerous (∼400) small (0.5 μm) organelles caused scintillons. The scintillons contain an open tetrapyrrole-type luciferin bound to a luciferin-binding protein (dimer, 72 kDa subunits).

Jan 13, 2018 · The much loved and studied dinoflagellate Gonyaulax polyedra, known for its spectacular bioluminescent displays and red tides in southern California and elsewhere, was renamed based on new insights into its morphology and to align the name with that of its spiny cyst, then known as Lingulodinium machaerophorum.

Oct 11, 2024 · Gonyaulax is a genus of dinoflagellates with the type species Gonyaulax spinifera (Claparède et Lachmann) Diesing. Gonyaulax belongs to red dinoflagellates and commonly causes red tides.

Gonyaulax polygramma is an armoured, planktonic marine dinoflagellate species. It is a red tide bloom species associated with massive fish and shellfish kills. Cells of Gonyaulax polygramma are medium-sized, elongate and pentagonal (Fig. 1). The tapered epitheca bears a prominent apical horn, and exceeds the symmetrical hypotheca (Figs. 1-3).

Sep 6, 2022 · The thecate dinoflagellate Gonyaulax areolata was found to produce a red tide event in the tropical Mexican Pacific. The species was originally described in 1911 by Kofoid and Michener without an...