The Dinoflagellates of Northern Seas

Lebour, Marie V.

doi:10.2307/3221792

Cited by 54 publications

(96 citation statements)

References 3 publications

(15 reference statements)

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“…In the original diagnosis of E. apora there is no mention of the edges of the valves being striated, nor is the number of flagellar pores given. Lebour (1925) placed specimens (16-22fL long) found near Plymouth in Schiller's E. apora, but states: ' It is possible that there are here two separate species .... ' In these specimens she records the presence of two flagellar pores and striated margins in the older cells. She also records the breaking up of the two chromatophores into small spheres (cf.…”

Section: Descriptionmentioning

confidence: 99%

A new marine dinoflagellate: Exuviaella mariae-lebouriae n.sp

Parke

Ballantine

1957

J. Mar. Biol. Ass.

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Cell ovoid to almost sphaeroidal in face view of right or left valve, lenticular to almost sphaeroidal in view showing junction of valves, in both views flagellar pole flattened, length (10) 14-17 (22), breadth (9) , thickness (5) 6-8 (18) fk. Two valves of cellulose, each with a striated band at margin, band wider in larger cells, striations about 0'5 fk apart, remainder of valve surface with poroids, apparently in rows, 0'25 fk apart, poroids 0'2-0'25 fk diameter; right valve with shallow indentation, about 2 fk wide, at flagellar pole, usually lying to left of centre line; left valve with small projecting flange, about 2 fk wide, bearing flagellar pores and fitting into and over indentation on right valve; the two flagellar pores of unequal size, in apical view larger nearly triangular, smaller circular, in left valve view smaller pore to left of larger. Two flagella, one emerging from larger pore undulating parallel to, and round, flagellar pole, 2'5-3 times body length; the other, 1'25-1'5 times body length, emerging from smaller pore. One obvious, usually ovoid, pusule, 1'5-4fk in length, in left valve view close to surface on the right side near flagellar pole, opening to exterior by canal to larger flagellar pore; second smaller pusule sometimes present but connexion to exterior not visible. Nucleus posterior, broadly ellipsoidal in valve view. Chromatophores golden-brown, usually two in smaller cells, large, parietal, saucer-shaped with deeply lobed margins, with a single large pyrenoid on inner face of each lying in anterior part of body; in larger cells chromatophores smaller and more numerous. Disc-shaped starch grains surrounding pyrenoids and in stroma; lipoid reserve absent. Nutrition phototrophic. Trichites distributed in peripheral cytoplasm, more numerous in region of junction of valves. Non-toxic to fish.Asexual reproduction by fission in the motile state into two daughter-cells of equal or unequal size.Isolated from sea-water sample taken near Knap Buoy, Plymouth Sound,

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Section: Descriptionmentioning

confidence: 99%

A new marine dinoflagellate: Exuviaella mariae-lebouriae n.sp

Parke

Ballantine

1957

J. Mar. Biol. Ass.

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“…G. brevisDavis (1948),which is also toxic, differs greatly morphologically,being lobed and flattened, and the remaining species listed all have quite marked distinguishing characters. G. simplex has a straight girdle, a sulcus that does not extend to the epicone (Lebour, 1925)and much smaller cells (I '7-7 p,). The sulcus in G. pygmaeumLebour (1925)extends over both apex and antapex and is overlapped on the left side by a tongue-like process, absent in the new species.…”

Section: Descriptionmentioning

confidence: 99%

Two new marine species of Gymnodinium isolated from the Plymouth area

Ballantine

1956

J. Mar. Biol. Ass.

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The two new species, Gymnodinium vitiligo and G. veneficum, which are described below, are both small and highly motile, and in other respects very similar. The greatest difference between them is physiological, as G. vitiligo is harmless, whereas G. veneficum produces a very powerful toxin which is lethal to fish. There are also small morphological differences which are visible when the organisms are in culture, confirming the existence of two separate species.

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“…It has been reported in the North Sea, Mediterranean Sea, and the Pacific (Kofoid and Swezy 1921;Lebour 1925;Trégouboff and Rose 1957). Some specimens from NW Africa are related with upwellings (Elbrächter 1979).…”

mentioning

confidence: 99%

“…Torodinium teredo and T. robustum occur together in the North Sea, Mediterranean Sea and Gulf of California (Lebour 1925;Trégouboff and Rose 1957;this study). The species were easily recognized in live samples as well as samples fixed in Lugol's solution.…”

mentioning

confidence: 99%

New data on the distribution of Torodinium robustum and T. teredo (Dinophyceae: Gymnodiniales) in the Gulf of California

Gárate-Lizárraga¹,

Muciño-Márquez²

2013

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The gymnodinioid marine dinoflagellates Torodinium robustum and T. teredo are reported for the Gulf of California. This is the first record of Torodinium teredo on the Pacific coast of Mexico. Both species were found mainly during the winter-spring in seawater at 19–27.5 °C. Torodinium robustum was the most frequent species. Morphological features of T. robustum and T. teredo varied widely and specimens observed in live samples and fixed in Lugol’s solution were easily recognizable. Short description and microphotographs were provided for each species.

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The Dinoflagellates of Northern Seas

Cited by 54 publications

References 3 publications

A new marine dinoflagellate: Exuviaella mariae-lebouriae n.sp

A new marine dinoflagellate: Exuviaella mariae-lebouriae n.sp

Two new marine species of Gymnodinium isolated from the Plymouth area

New data on the distribution of Torodinium robustum and T. teredo (Dinophyceae: Gymnodiniales) in the Gulf of California

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