Abstract
IN a recent issue of NATURE, Delsman1 refers to the appearance of large numbers of Doliolum nationalis at Den Helder in 1910–12, presumably carried there from the English Channel. It may be of interest to record the presence of another doliolid in the North Sea this year. The material was collected in the course of investigating the relations between herring and the plankton by means of the Hardy plankton indicator2, and was forwarded to Prof. Garstang, who kindly identified phorozoids and gonozoids as Dolioletta gegenbauri (Uljanin). Oozoids were also present, but the identification of these is as yet uncertain.
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References
Delsman, NATURE, 132, 640, Oct. 21, 1933.
Hardy, Min. Agric. and Fish., Fish. Invest., 2, 8, No. 7; 1925.
Schmidt, Rapp. Cons. Explor. Mer., 10, No. 4; 1909.
Garstang, J. Mar. Biol. Ass., N.S., 3, 210; 1894.
Bowman, Rep. Brit. Assoc., 1922, p. 367.
Russell and Hastings, J. Mar. Biol. Ass., N.S., 18, 635; 1933.
Fowler, Proc. Zool. Soc., 10, 580; 1898.
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LUCAS, C. Occurrence of Dolioletta gegenbauri (Uljanin) in the North Sea. Nature 132, 858 (1933). https://doi.org/10.1038/132858a0
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DOI: https://doi.org/10.1038/132858a0
