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The effect of polluted sediment on the gonadal development and embryogenesis of bivalves
Timmermans, B.M.H.; Hummel, H.; Bogaards, R.H. (1996). The effect of polluted sediment on the gonadal development and embryogenesis of bivalves, in: [s.d.] VVIA Berichten. 13: pp. 231-236
In: VVIA Berichten: Nieuwsbrief van de Vlaamse Vereniging voor Industriële Archeologie. Vlaamse Vereniging voor Industriële Archeologie: Brussel, more

Also published as
  • Timmermans, B.M.H.; Hummel, H.; Bogaards, R.H. (1996). The effect of polluted sediment on the gonadal development and embryogenesis of bivalves. Sci. Total Environ. 187: 231-236, more

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Keywords
    Gametogenesis; Gonads; Marine molluscs; Marine pollution; Pollution effects; Sediment pollution; Sediments; Cerastoderma edule (Linnaeus, 1758) [WoRMS]; Macoma balthica (Linnaeus, 1758) [WoRMS]; Marine

Authors  Top 
  • Timmermans, B.M.H.
  • Hummel, H., more
  • Bogaards, R.H.

Abstract
    Cockles (Cerastoderma edule) and Baltica clams (Macoma balthica) were kept on polluted sediment from the harbour of Rotterdam, and on clean sediment from the Wadden Sea (control). Their gametogenesis was then followed. in vitro fertilisation (IVF) experiments were carried out and larvae were cultured until the D-stage (veliger-stage). At the end of the experiment, in animals from Rotterdam harbour sediment, the condition-index (CI) and gonad-index (GI) were significantly lower, whereas the proportion of parasitised animals was higher than in the controls. Spawning- and fertilisation percentages were also lower in animals kept on harbour sediment. Larval development did not show significant differences.

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