Effects of metals on sea urchin development: A rapid bioassay |
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| Authors: | Harold H Lee CH Xu |
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| Institution: | 1. Department of Biology, The University of Toledo, Toledo, OH 43606, USA;2. Institute of Oceanography, Academia Sinica, Quingdao, The People''s Republic ofChina |
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| Abstract: | Embryos of sea urchins show a differential response to Cd, Cu, Cr, Ni and Zn. The responses are also stage-specific. The different morphological effects of various metals reflect the differentiation of the early embryonic cells. Since fertilization can be inhibited in the presence of metals, especially Cu, the ability of the gametes to undergo fertilization can then be used as a biological indicator for a rapid assay, 10–20 min., of marine pollutants. Since embryo-genesis up to plutei stage requires only 20 h, this duration is also short compared to other systems utilizing embryonic or larval forms. |
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