Interactive effects of elevated waterborne copper and temperature on cellular stress responses in sail-fin molly Poecilia latipinna

• Main Authors: Shang-Yao Su, 蘇上耀
• Other Authors: Hsiu-Chin Lin
• Format: Others
• Language: en_US
• Published: 2019
• Online Access: http://ndltd.ncl.edu.tw/handle/qw8pz8

碩士 === 國立中山大學 === 海洋生物科技暨資源學系研究所 === 107 === Copper is one of the major contaminations in freshwater ecosystem due to urbanization, industrialization and increase in agriculture production. Additionally, global warming leads to elevation of water temperature can affect the biochemical reactions of ectotherms. It is, thus, important to realize weather elevated temperature would impose the harmful effects of copper on cellular regulation and viability of aquatic animals. Poeciliidae families have been employed as sentinel species in ecotoxicological studies. In light of the background above, the present study aimed to investigate the cellular stress response of sail-fin molly (Poecilia latipinna) acutely exposed to ecologically relevant copper levels under elevated temperature scenario. The cellular stress responses, protein quality control and antioxidant defense as the biomarker were examined in gills and liver. The results showed that either copper or thermal challenge indeed triggered cellular stress responses. However, the condition of combined stresses would suppress a part of cellular stress responses resulting in intense cell damage as elevation of aggregated proteins to sail-fin molly. Accordingly, in the perspective, global warming will impose the toxicological damage of copper which may affect the cellular and physiological homeostasis of aquatic animals and the health of aquatic ecosystems.