Abstract
Oocyte maturation of the starfish, fertilization and embryogenesis of sea urchins, and the development of amphioxus and brine shrimps were used to assay the effects of several common metals and agrichemicals frequently found in marine environments. While brine shrimp embryos were tolerant to metals and agrichemicals used here, sea urchins and amphioxus showed a differential response to the common metal pollutants. Starfish oocyte maturation process was affected by agrichemicals. The results show that no one single organism, or its embryonic form, or a particular stage of development, can be used as the indicator for a particular pollutant. However, the use of lower forms of marine organisms can be useful collectively for environmental investigations and the management of waste disposal.
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