Water Quality and Investigations, Science Division, Department of Environment and Science, Queensland Government, Australia; Environment, Commonwealth Scientific and Industrial Research Organisation, Ecosciences Precinct, Dutton Park, QLD 4102, Australia.
Water Quality and Investigations, Science Division, Department of Environment and Science, Queensland Government, Australia.
J Hazard Mater. 2024 May 5;469:133885. doi: 10.1016/j.jhazmat.2024.133885. Epub 2024 Feb 24.
Turtles are a potential sentinel species of aquatic ecosystem health as they inhabit aquatic ecosystems, are long lived, and potentially have high exposure to anthropogenic chemicals via food and water. This study investigated per- and polyfluoroalkyl substances (PFAS) tissue partitioning in female Emydura macquarii macquarii turtle, and the maternal offloading of (PFAS) into eggs and then hatchlings as well as the accumulation of PFAS in male and female Emydura macquarii macquarii serum. Significantly higher levels of perfluorosulfonic acids (PFSAs) and perfluorocarboxylic acids (PFCAs) were measured in the male serum compared to the female turtle serum, whereas perfluoroalkane sulfonamides (FASAs) were significantly higher in the female turtle serum. Perfluorooctane sulfonate (PFOS) was the predominant PFAS in the turtles whereas PFHxA was the predominant PFAS found in the surrounding water. PFHxA was not reported in any turtle tissue or the serum. The short-chain PFSAs and FASAs appeared to be highly associated with blood; long-chain PFSAs and PFCAs were more likely to be associated with tissue. Half of the PFHxS and all the long-chain PFSAs and PFCAs reported in the yolks were transferred into the hatchlings (by mass), suggesting a potential intergenerational effect.
海龟是水生生态系统健康的潜在指示物种，因为它们栖息在水生生态系统中，寿命长，并且通过食物和水可能会大量接触人为化学物质。本研究调查了雌性 Emydura macquarii macquarii 龟体内的全氟和多氟烷基物质（PFAS）组织分布情况，以及母体将（PFAS）转移到卵和幼体中的情况，以及雄性和雌性 Emydura macquarii macquarii 血清中 PFAS 的积累情况。与雌性海龟血清相比，雄性血清中测量到的全氟磺酸（PFSAs）和全氟羧酸（PFCAs）水平明显更高，而全氟烷磺酸（FASAs）在雌性海龟血清中则明显更高。在海龟中，全氟辛烷磺酸（PFOS）是主要的 PFAS，而在周围水中则发现了主要的 PFAS 是全氟己烷磺酸（PFHxA）。在任何海龟组织或血清中均未报告 PFHxA。短链 PFSAs 和 FASAs 似乎与血液高度相关，而长链 PFSAs 和 PFCAs 更可能与组织相关。蛋黄中报告的一半 PFHxS 和所有长链 PFSAs 和 PFCAs 都转移到了幼体中（按质量计），这表明存在潜在的代际效应。
