Paternal exposure to aluminum, acidity, and temperature affect fatty acid seminal profile, embryonic and larval development of Astyanax altiparanae

Chemosphere
João Paulo Silva PinheiroRenata Guimarães Moreira

Abstract

We investigated the effects of water acidity, temperature, and aluminum (Al) on the fatty acid (FA) seminal profile, reproductive parameters (fertilization and hatching) and embryonic development of Astyanax altiparanae. We treated males with different experimental treatments, corresponding to the combination of water temperature (20 °C; 25 °C), pH (neutral - 7.0; acidic - 5.5), and the absence or presence of Al (0.5 mg L-1). After 96 h, we analyzed the FA profile of semen and performed artificial fertilization in activating medium with neutral pH or activating medium in the same experimental conditions of the males (neutral pH, acidic pH, and Al) to evaluate fertilization and hatching rates and to monitor embryonic development. Polyunsaturated FA percentage decreased in semen of fish from the neutral group, while monounsaturated FA increased in all groups maintained at 20 °C compared to 25 °C. Aluminum exposure decreased the percentage of C20:4n6 and increased the percentage of C22:5n3 at 20 °C. Males exposed to acidic pH and Al showed lower fertilization and hatching rates, as well as increased mortality of embryos and larvae. Moreover, Al favoured a higher percentage of abnormal larvae. Fertilization in Al activating medium ...Continue Reading

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Citations

Jan 2, 2021·Comparative Biochemistry and Physiology. Toxicology & Pharmacology : CBP·Amanda de Moraes NarcizoRenata Guimarães Moreira
May 22, 2021·Journal of Agricultural and Food Chemistry·Yilong CuiYanfei Li
Jul 12, 2021·Comparative Biochemistry and Physiology. Toxicology & Pharmacology : CBP·Tiago Gabriel CorreiaRenata Guimarães Moreira

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