Application of the Paracentrotus lividus sea-urchin embryo-larval bioassay to the marine pollution biomonitoring program in the Tunisian coast

Stress response to trace elements mixture of different embryo-larval stages of Paracentrotus lividus

“…This short period prevents organisms from acquiring resistance to contamination through physiological acclimatization (Benedetti et al, 2015). The embryonic development of sea urchin is characterized by crucial successive stages from fertilization to organogenesis (Byrne et al, 2009;Gharred et al, 2021). This early stage is therefore likely to be more sensitive than later stages and could explain a significantly higher GPX specific activity (Fig.…”

“…Migliaccio et al, 2014;Ruocco et al, 2020;Nogueira et al, 2021). The sensitivity of the sea urchin larvae and morphological abnormalities due to pollutants exposure have been reported under controlled laboratory conditions or in natural marine-polluted ecosystems (Saco-Álvarez et al, 2010;Beiras et al, 2012;Gharred et al, 2021). While larvae have been used to assess trace elements contamination, no study has examined induced oxidative stress over the entire larval cycle.…”

Ecotoxicity of basil (Ocimum Basilicum) extract in aquaculture feeds: Is it really eco-safe for the aquatic environment?

“…P. lividus has been demonstrated to be highly sensitive to various compounds, and it is widely used to assess the toxicological effects and the environmental impact of a variety of pollutants. The embryos are a highly duplicative cell system; exposure to chemicals has an adverse effect on delicate embryo development (Piccardo et al, 2021;Gharred et al, 2022). As reported for D. magna, the dissolution of fish feed probably caused the release of particulate organic matter that altered the water's physiochemical characteristics, making it toxic to P. lividus embryos.…”

Crude Oil and Its Burnt Residues Induce Metamorphosis in Marine Invertebrates

“…Pollution is a major anthropogenic stressor in coastal waters. Studies on the effects of pollution on meroplanktonic larvae typically have focused on the survival and growth of early development stages in a few model species. − In contrast, we know little about the influence of pollution on larval metamorphosis and settlement. Oil pollution in marine environments, both acute and chronic oiling, is a major global environmental problem .…”