Missouri Department of Conservation, Ozark Regional Office, 551 Joe Jones Boulevard, West Plains, MO, 65775, USA.
Bull Environ Contam Toxicol. 2014 Feb;92(2):125-31. doi: 10.1007/s00128-013-1145-x. Epub 2013 Nov 7.
A non-lethal biopsy method for monitoring mercury (Hg) concentrations in smallmouth bass (Micropterus dolomieu; smallmouth) from the Eleven Point River in southern Missouri USA was evaluated. A biopsy punch was used to remove a muscle tissue plug from the area immediately below the anterior dorsal fin of 31 smallmouth. An additional 35 smallmouth (controls) were held identically except that no tissue plug was removed. After sampling, all fish were held in a concrete hatchery raceway for 6 weeks. Mean survival at the end of the holding period was 97 % for both groups. Smallmouth length, weight and Fulton's condition factor at the end of the holding period were also similar between plugged and non-plugged controls, indicating that the biopsy procedure had minimal impact on growth under these conditions. Tissue plug Hg concentrations were similar to smallmouth Hg data obtained in previous years by removing the entire fillet for analysis.
本研究评估了一种用于监测美国密苏里州南部十一河小体鱥（Micropterus dolomieu；小体鱥）体内汞（Hg）浓度的非致死性活检方法。使用活检打孔器从小体鱥的前背鳍下方区域取出一块肌肉组织塞。另外 35 条小体鱥（对照组）被同样处理，但不取出组织塞。采样后，所有鱼类都在混凝土孵化场水槽中饲养 6 周。饲养期结束时，两组鱼的平均存活率均为 97%。在饲养期结束时，小体鱥的体长、体重和富尔顿的身体状况系数在插塞组和未插塞对照组之间也相似，表明在这些条件下，活检过程对生长的影响很小。组织塞的 Hg 浓度与之前通过去除整个鱼片进行分析获得的小体鱥的 Hg 数据相似。
