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Relative growth and secondary production of the amphipod Gammarus aequicauda (Martynov, 1931) in the Evros Delta (N. Aegean Sea)
Kevrekidis, Th.; Lazaridou-Dimitriadou, M. (1988). Relative growth and secondary production of the amphipod Gammarus aequicauda (Martynov, 1931) in the Evros Delta (N. Aegean Sea). Cah. Biol. Mar. 29(4): 483-495
In: Cahiers de Biologie Marine. Station Biologique de Roscoff: Paris. ISSN 0007-9723, more
Peer reviewed article  

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Keyword
    Brackish water

Authors  Top 
  • Kevrekidis, Th.
  • Lazaridou-Dimitriadou, M.

Abstract
    There exists a positive correlation between the cephalic length (Lc) and the body length (Lb) or dry body weight (W) in Gammarus aequicauda. Lc grows slower than Lb and W. Using the above criteria, the juvenile stage (Lc < 16 microscopic units = 616 mu m) and the adult one (males or females indifferently) were determined. Ovigerous females grow faster than non ovigerous and males grow faster than females. Secondary production in G. aequicauda, living in Evros Delta (Northern Greece) calculated by Hynes's method, gave a mean annual density equal to 3127.7 individuals/m super(2), a mean biomass (B) of 4.24 g dry weight/m super(2)/yr, a production (P) of 22.40 g/m super(2)/yr and an annual turnover ratio (P/B) of 5.28.

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