Blewett Tamzin A, Newton Dustin, Flynn Shannon L, Alessi Daniel S, Goss Greg G, Hamilton Trevor J
Department of Biological Science, University of Alberta, Edmonton, Alberta, Canada.
Department of Psychology, MacEwan University, Edmonton, Alberta, Canada.
Conserv Physiol. 2017 Sep 28;5(1):cox057. doi: 10.1093/conphys/cox057. eCollection 2017.
Cadmium (Cd) is a non-essential metal ubiquitous in the environment due to industrial processes. However, little is known regarding the ability of Cd to impact the behaviour of aquatic animals in receiving environments. Green shore crabs () were exposed to waterborne Cd [control (no Cd), low (0.30 μmol/L), medium (3.3 μmol/L) and high (63 μmol/L)], for 24 h, then, crabs were placed in an open field and shelter test to determine potential changes in locomotion and preference for shelter. Tissues (gill, haemolymph, stomatogastric ganglion) were taken for bioaccumulation analysis of Cd and ion content. Behavioural testing was recorded with a motion-tracking software system and showed no impact of Cd on any variable in either of the tests used. All three tissues accumulated Cd in a concentration-dependent manner. Crabs exposed to low Cd showed a small but significant decrease in haemolymph Ca, however, this effect was not present at higher Cd exposures. Overall, the results indicate that short-term Cd exposure, and the resulting Cd accumulation, had no effect on locomotor and anxiety-related behaviour of green shore crabs.
镉（Cd）是一种因工业生产而在环境中广泛存在的非必需金属。然而，关于镉对受纳环境中水生动物行为的影响，人们所知甚少。将绿岸蟹暴露于水溶镉中[对照组（无镉）、低浓度组（0.30微摩尔/升）、中浓度组（3.3微摩尔/升）和高浓度组（63微摩尔/升）]24小时，然后将螃蟹置于旷场和遮蔽物测试中，以确定其运动和对遮蔽物偏好的潜在变化。采集组织（鳃、血淋巴、口胃神经节）用于镉和离子含量的生物积累分析。行为测试通过运动跟踪软件系统进行记录，结果显示，在所使用的任何一项测试中，镉对任何变量均无影响。所有三种组织中镉的积累均呈浓度依赖性。暴露于低镉环境的螃蟹血淋巴钙含量出现小幅但显著的下降，然而，在较高镉暴露水平下未出现这种效应。总体而言，结果表明，短期镉暴露以及由此导致的镉积累，对绿岸蟹的运动和焦虑相关行为没有影响。
