Yancheva, VeselaStoyanova, StelaGeorgieva, ElenkaTodorova, BorislavaAntal, LaszloSamogyi, DoraUzochukwu, Ifeany EmmanuelNagy, LaszloNyeste, Krisztian2025-05-292025-05-292025-05-281313-9916https://doi.uni-plovdiv.bg/handle/store/615This study evaluated lysosomal membrane stability using the Neutral Red Retention Time (NRRT) assay in hemocytes of Mytilus galloprovincialis from wild and farmed populations, as a biomarker for environmental stress. Mussels were sampled during winter and spring to assess seasonal variability. NRRT values showed a significant reduction in both populations across both seasons, indicating compromised lysosomal integrity and exposure to environmental stressors. However, the wild mussels exhibited consistently lower NRRT values compared to the farmed individuals, suggesting a higher level of stress. The question of why is yet to be answered.enBlack SeapollutionmusselsArticle