The effect of polluted sediment on the gonadal development and embryogenesis of bivalves
In: Science of the Total Environment. Elsevier: Amsterdam. ISSN 0048-9697; e-ISSN 1879-1026, more |  |
| Keywords | 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
Sediments
Cerastoderma edule (Linnaeus, 1758) [WoRMS]; Macoma balthica (Linnaeus, 1758) [WoRMS]
Marine/Coastal |
| Authors | | Top | - Timmermans, B.M.H.
- Hummel, H., more
- Bogaards, R.H.
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| 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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