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Contribution à l'étude de la biologie des Turridae des côtes européennes: Mangelia nebula (Montagu)
Delaunois, N.; Sheridan, R. (1989). Contribution à l'étude de la biologie des Turridae des côtes européennes: Mangelia nebula (Montagu). Cah. Biol. Mar. 30(3): 347-359
In: Cahiers de Biologie Marine. Station Biologique de Roscoff: Paris. ISSN 0007-9723, more
Peer reviewed article  

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Keywords
    Mangelia (Bela) nebula (Montagu, 1803) [WoRMS]; Turridae H. Adams & A. Adams, 1853 (1838) [WoRMS]; Europe Coasts [Marine Regions]; Marine

Authors  Top 
  • Delaunois, N.
  • Sheridan, R.

Abstract
    This work presents different aspects on the biology of Mangelia nebula living in the Bay of Morlaix. On the muddy fine sand at "la Noire" station, the species forms a population with a mean density of 3.8 individuals per m super(2), with a range extending from 0 to 9.5 m super(-2), Laboratory experiments indicate that the majority of the population lives within the first centimetre-upper layer of the sediment. Eggs deposition occurs from January to May and veligers escape from the capsule after about three weeks, spending a part of this period of time in a free state within the capsule. The juveniles appear to grow at a rate of 0.28 mm per month during the autumn and the winter. Feces analysis indicates that Mangelia nebula feeds almost exclusively on a tubicolous polychaete, Spio decoratus. The examination of empty shells of Mangelia nebula reveals that his principal predator is a naticid gastropod.

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