Evaluation of Histopathological and Hematological Effects of Neonicotinoid (Acetamiprid 20% SP) on Grass Carp (Ctenopharyngodon idella)

Table 3

Gills damages of fingerling grass carp (Ctenopharyngodon idella) 96 h after exposure to different levels of neonicotinoid (acetamiprid 20% SP).

	Nominal concentrations (ml·L^−1)
Tissue damages	0	50	100	150	200
Basal hyperplasia	−	−	++	+++	+++
Epithelial hypertrophy	−	+	++	+++	+++
Uplifting of gill filaments	−	+	++	++	++
Fusing of filaments	−	−	+	+++	+++
Necrosis of epithelial cells	−	−	+	++	++++

(−) The tissue damages were not seen; (+) there was tissue slight damages; (++) there was tissue moderate damages; (+++) there was tissue intense damages; (++++) there was tissue very intense damages in the samples.