Toxicity of aldehydes to sea urchin Echinometra mathaei
What is it about?
Nowadays little is known about the sensitivity of Indo-Pacific species of sea urchin to polyunsaturated aldehydes, chemical compounds thought to be involved in the defensive strategy of phytoplankton. In this study, the effect of three short chain aldehydes, 2,4-decadienal (DD), 2,4-octadienal (OD) and 2,4-heptadienal (HD), normally found in many diatoms, was evaluated on larval development of E. mathaeiembryos. Aldehydes affected larval development in a dose-dependent manner, in particular HD>OD>DD.
Why is it important?
In comparison with studies reported in literature, contrasting results were observed during our tests; therefore, an increasing toxic effect was registered with decreasing the chain length of aldehydes. This work could provide new insights in the development of new toxicological assays toward most sensitive species.
The following have contributed to this page: Dr Andrea Gaion