Interactions between marine crustaceans and digested sewage sludge
1988; Elsevier BV; Volume: 19; Issue: 3 Linguagem: Inglês
10.1016/0025-326x(88)90706-0
ISSN1879-3363
AutoresDeborah V. Chapman, S. L. White, Philip S. Rainbow, Mia Taylor,
Tópico(s)Fish Biology and Ecology Studies
ResumoDigested sewage sludge as dumped at sea was labelled with radioactive silver which bound tightly to the particulate fraction of the sludge. Both mysids (Schistomysis spiritus) and barnacles (Elminius modestus) ingested the sludge. The silver was apparently assimilated by the barnacles. The mysids, with sludge still in their guts, were fed to shrimps (Crangon crangon) which subsequently accumulated the silver in the hepatopancreas. When exposed directly to the sludge suspension the shrimps accumulated fine particles in their gills and attached to the limb and body setae. Although the gills could be flushed in clean water the sludge attached to the setae was mainly lost after moulting. Moults may be ingested by the shrimps themselves or by other scavengers. Thus sludge attached to, or within, the bodies of marine organisms may provide an additional means of metal transfer from sewage sludge into marine food chains.
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