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| Main Authors: | , , , , |
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| Format: | Artículo científico |
| Language: | en |
| Published: |
Environmental toxicology and pharmacology
2026
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| Subjects: | |
| Online Access: | https://pubmed.ncbi.nlm.nih.gov/42167390/ |
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Table of Contents:
- UV-protective agents threaten bivalve reproduction: Impacts of octocrylene and benzophenone on gamete quality and fertilization in the Pacific oyster (Magallana gigas). Carvalhais, Ana Lippa, Romina Oliveira, Isabel Benta Pacheco, Mário Mieiro, Cláudia Animals Benzophenones Fertilization Spermatozoa DNA Damage Acrylates Male Ostreidae Sunscreening Agents Female Oocytes Reproduction Water Pollutants, Chemical Ultraviolet Rays Gamete quality is crucial to the reproductive success of marine broadcast spawners, as environmental stressors can disrupt their structure and function. This study investigates the effects of the organic UV-protective agents octocrylene (OC) and benzophenone (BP), following ex vivo exposure (1, 10, 100 µg.L), on the oxidative balance, DNA integrity, and fertilization success of Pacific oyster (Magallana gigas) gametes. OC and BP induced spermiotoxicity via DNA damage without affecting acrosome integrity or redox status, while oocyte redox status and energy profile were unchanged. Nevertheless, fertilization decreased across all treatments when oocytes or sperm were exposed individually, and at the highest concentrations when both gametes were exposed. A 10-30% drop in fertilization proved sensitive for detecting impairment. Overall, low OC and BP levels reduce oyster fertilization through effects not captured by standard biochemical biomarkers, supporting fertilization success as an integrative, sensitive endpoint of gamete function.