Noctiluca


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Noctiluca

 

a genus of protozoa of the class Mastigophora of the order Dinoflagellata. The spherical body is 2 to 3 mm in diameter and has a mobile, contractive flagellum. The animal reproduces by mitosis or by forming small buds, about 20 μm long, on the body surface. The cytoplasm is filled with fatty substances that oxidize and glow when irritated chemically or mechanically. (Experiments have shown that the substances react similarly to electric stimuli.) The Noctiluca are among the principal organisms that cause luminescence of the sea. They form clusters on the surface of warm or, less frequently, boreal waters. In the USSR the organisms are found in the Black Sea and the seas of the Far East.

References in periodicals archive ?
The researchers began to see vast blooms of Noctiluca and a steep drop in diatoms and dissolved oxygen in the water column.
1996 Sequence and biochemical similarities between the luciferases of the glow-worm Lampyris noctiluca and the firefly Photinus pyralis.
Dr Hamed Al Gheilani spoke on HAB in Omani waters with emphasis on Noctiluca blooms; Dr Jasmine Pursushottam on recent noctiluca in Omani waters.
The use of tetracycline staining techniques to determine statolith growth ring periodicity in the tropical loliginid squids Loliolus noctiluca and Loligo chinensis.
The tiny purple stinger jellyfish - pelagia noctiluca - killed EUR1.
The official name for the plankton which turns surface of the sea into a red colour is Noctiluca Scintillans.
The School of Science, Swansea University, is using state of the art environmental monitoring equipment to collect baseline data onboard its research vessel, RV Noctiluca, in particular about migratory fish behaviour in the Severn Estuary and Bristol Channel.
LCRI's marine project, led by Swansea university, had a Celtic Odyssey from May 6-13, where two university vessels - Cardiff's Guiding Light, and Swansea's Noctiluca - took to sea with a range of researchers, scientists and industry representatives and a host of equipment and data measuring devices.
0 0 0 0 1600 Naked dinoflagellate 400 400 0 0 0 Noctiluca scintillans 0 0 0 0 200 Protoperidinium conicum 0 0 200 0 600 Prorocentrum micans 200 0 0 0 0 Protoperidinium elegans 0 0 0 0 800 Protoperidinium ovum 0 0 0 0 0 Protoperidinium sp.
Two research vessels, the Noctiluca (Swansea University) and Guiding Light (Cardiff University), will act as floating laboratories and offshore classrooms for survey and monitoring work.
Swarms of the purple stinger - or pelagia noctiluca - have forced some beaches to ban tourists from the sea.
Swansea University's research vessel Noctiluca and Cardiff's Guiding Light will act as offshore classrooms for survey and monitoring.