Cd	cadmium
MT	metallothionein
AAS	atomic absorption spectroscopy
ICP	inductively coupled plasma
GFAAS	graphite furnace atomic absorption spectrometry
FAAS	flame atomic absorption spectrometry
ICP‒MS	inductively coupled plasma‒mass spectrometry
ICP‒OES	inductively coupled plasma optical emission spectrometry
HPG	hypothalamic–pituitary–gonadal axis
GSI	gonad somatic index
AChE	acetylcholinesterase
CaM	calmodulin
ROS	reactive oxygen species
RNS	reactive nitrogen species
MDA	malondialdehyde
GR	glutathione reductase
SOD	superoxide dismutase
CAT	catalase
GPx	glutathione peroxidase