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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. Sci. Total Environ. 187(3): 231-236.
In: Science of the Total Environment. Elsevier: Amsterdam. ISSN 0048-9697; e-ISSN 1879-1026, more
Peer reviewed article  

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    Fauna > Aquatic organisms > Aquatic animals > Shellfish > Marine organisms > Marine molluscs
    Morphogenesis > Gametogenesis
    Pollution > Sediment pollution
    Pollution > Water pollution > Marine pollution
    Pollution effects
    Secretory organs > Glands > Endocrine glands > Animal reproductive organs > Gonads
    Cerastoderma edule (Linnaeus, 1758) [WoRMS]; Macoma balthica (Linnaeus, 1758) [WoRMS]

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

    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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