Pyrocystis fusiformis

Pyrocystis fusiformis
	Pyrocystis fusiformis
Systematics
without rank:	Sar
without rank:	Alveolata
without rank:	Dinoflagellates (Dinoflagellata)
Family :	Pyrocystaceae
Genre :	Pyrocystis
Type :	Pyrocystis fusiformis
Scientific name
	Pyrocystis fusiformis
	CWThomson , 1876

Pyrocystis fusiformis is an immobile, tropical, epipelagic marine dinoflagellate (flagellate microorganisms). P. furisormis exhibits bioluminescence when disturbed or agitated. In coastal seas, this dinoflagellate causes glowing effects after dark.

features

Pyrocystis fusiformis bioluminescence when poured into a glass.

Sea lights on the bow of a ship

Pyrocystis fusiformis f. fusiformis is flattened, spindle-shaped, narrow with rounded or pointed ends. It reaches a length of 768 to 841 and a width of 174 to 232 μm. Pyrocystis fusiformis is athecat, so it has no theca .

Way of life

Pyrocystis fusiformis is autotrophic and gets its energy from the sun through photosynthesis. They photosynthesize in daylight and produce bioluminescence at night. It has a full life cycle of approximately 5-7 days and reproduces asexually. In the reproductive phase, 1 or 2 zoospores are created that grow within the parent's cell wall until they become new cells.

to form

From Pyrocystis fusiformis , in addition to Pyrocystis fusiformis f. fusiformis two other forms are described:

Pyrocystis fusiformis f. biconica Kofoid , 1907
Pyrocystis fusiformis f. lanceolata (Schröder) FJRTaylor , 1976

Research history

Pyrocystis fusiformis was first described in the Proceedings of the Royal Society of London in 1876 . Murray noted that "in the open sea between the northern border of the northeast trade winds and the southern border of the southeast trade winds, there are hardly any small, but three large, previously undescribed diatom species." Wild drew two of them, the genus labeling on plate 21 was incorrectly called Pyrocistis ( P. pseudonoctiluca and P. fusiformis ). Murray continued: “These organisms have an extremely thin shell of silica and are real diatoms, although they have been confused with Noctiluca (a genus of dinoflagellates). The nuclei of these two forms are highly phosphorescent , and they are generally responsible for the diffuse phosphorescence of the ocean in the tropics . "

Individual evidence

↑ Sadaf godi Gul, Syed Mohammed Saifullah: Some rarely reported athecate dinoflagellates from North Arabian Sea. In: Pakistan Journal of Botany 41 (6). Pp. 3213–3218, 2009. ( Online )
↑ Michael Latz: Bioluminescence response of four species of dinoflagellates to fully developed pipe flow. In: Journal of Plankton Research , 26 (12), 2004, pp. 1529-1546. ( Online )
↑ Pyrocystis fusiformis at World Register of Marine Species (WoRMS)
^ J. Murray: Preliminary reports to Professor Thompson, FRS and Director of the civilian scientific staff on work done on board the "Challenger". In: Proceedings of the Royal Society of London , 1876, Volume 24, page 533. ( Online )

Web links

Pyrocystis fusiformis . In: algaebase.org (English)

[Gul_und_Saifullah-1] Sadaf godi Gul, Syed Mohammed Saifullah: Some rarely reported athecate dinoflagellates from North Arabian Sea. In: Pakistan Journal of Botany 41 (6). Pp. 3213–3218, 2009. ( Online )

[Latz-2] Michael Latz: Bioluminescence response of four species of dinoflagellates to fully developed pipe flow. In: Journal of Plankton Research , 26 (12), 2004, pp. 1529-1546. ( Online )

[WoRMS-3] Pyrocystis fusiformis at World Register of Marine Species (WoRMS)

[Professor_Thompson-4] J. Murray: Preliminary reports to Professor Thompson, FRS and Director of the civilian scientific staff on work done on board the "Challenger". In: Proceedings of the Royal Society of London , 1876, Volume 24, page 533. ( Online )