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Reproduction and population dynamics of Perinereis cultrifera (Polychaeta: Nereididae) of the Atlantic coast, El Jadida, Morocco
Rouhi, A.; Sif, J.; Gillet, P.; Deutsch, B. (2008). Reproduction and population dynamics of Perinereis cultrifera (Polychaeta: Nereididae) of the Atlantic coast, El Jadida, Morocco. Cah. Biol. Mar. 49(2): 151-160
In: Cahiers de Biologie Marine. Station Biologique de Roscoff: Paris. ISSN 0007-9723, more
Peer reviewed article  

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Keywords
    Population dynamics; Reproduction; Secondary production; Perinereis cultrifera (Grube, 1840) [WoRMS]; Marine
Author keywords
    Marocco

Authors  Top 
  • Rouhi, A.
  • Sif, J.
  • Gillet, P.
  • Deutsch, B.

Abstract
    Perinereis cultrifera (Grube, 1840) is a common species along the Atlantic coast of El Jadida (Morocco). Field investigations of the reproduction and population dynamics were carried out from November 2003 to October 2004. Monthly samples were taken in the intertidal zone at low tide. The reproduction is of atokous type, the laying took place from April until the end of May and the females can contain up to 4947 eggs. The annual average biomass (dry weight) of the population was B = 9.4 g.m-2, with an annual production P = 21.5 g.m-2 and a ratio P/B = 2.3 year-1. The algorithm EM was used for the separation of the cohort.

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