Effects of trace elements contaminations on the larval development of Paracentrotus lividus using an innovative experimental approach

Assessment of trace element contamination and effects on Paracentrotus lividus using several approaches: Pollution indices, accumulation factors and biochemical tools

“…potential deleterious effect at high concentrations in the environment (Caillaud et al, 2009;Tashakor et al, n.d.). In this regard, recent experiments have been performed to determine the impacts of concentrations measured in this area on Paracentrotus lividus but no significant effect were highlighted on the larvae, even in the presence of chronic contamination (El Idrissi et al, 2022a, 2022b.…”

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

“…3A). Thus, these concentrations are probably not high enough to create oxidative stress in Paracentrotus lividus larvae, although they are 5 to 10 times higher than those at the contaminated sites (Table 1; Ternengo et al, 2018;El Idrissi et al, 2022). A recent study has shown that the number of trace elements also plays an important role in the effects on sea urchin larvae (El Idrissi et al, 2022).…”

“…This could be justified by the fact that the mixture used in this study is composed for the most part by essential trace elements, fundamental for most physiological processes of living organisms (Janssens et al, 2009;Yamaguchi et al, 2009;Ghribi et al, 2020). A phenomenon of hormesis characterized by an improvement of the biological aptitude at low dose had been assumed in the study of El Idrissi et al (2022). This is a response, generally favorable, to low-dose exposures to contaminants or stressgenerating phenomena (Mattson, 2008).…”

“…Several authors have indicated the importance of considering spawners quality in studies of the effects of contaminants on larvae (e.g. Bougis et al, 1979;Pétinay et al, 2009). El Idrissi et al (2022 demonstrated significant differences in development and size between the larvae obtained by the spawners from Albo and those produced by spawners from Calvi.…”

“…3D). El Idrissi et al (2022) has mentioned that Calvi is exposed to other sources of pressure than trace elements inducing spawners with lower quality gametes, explaining the slower development and smaller larvae. The quality of gametes is known to be greatly influenced by different environmental factors such as temperature, quality of the seawater (e.g.…”