HATCHABILITY AND PERCENTAGE SURVIVAL OF CATFISH EMBRYO

ABSTRACT

The study investigates the hatchability and mortality rates of Clarias gariepinus embryos exposed to varying concentrations of Al2O3 and ZnO NPs combination. The study revealed a reduction in hatching and survival rates of Clarias gariepinus embryos, with these effects varying based on the concentration of the nanoparticles. The underlying mechanism is likely linked to the solubility of these nanoparticles and the release of toxic metal ions. The study found that catfish embryos were delayed in hatching after exposure to Al2O3 NP and ZnO NPs at 24 and 48 hours post-fertilization. This delay could be due to the release of Al and Zn ions stemming from the dissolution of Al2O3 and ZnO NPs. The study also found that Al2O3 NP and ZnO NPs negatively impacted survival rates, which support previous research. The disparity in survival rates may be due to differences in nanoparticle size or exposure conditions. This study suggests that nanoparticle toxicity is multifaceted and depends on factors such as particle size, composition, and intrinsic characteristics. The extensive use of nanoparticles in various industries has raised concerns about their potential environmental repercussions. The study underscores the need for further research into the potential impacts of these nanoparticles on aquatic organisms, including catfish embryos.