Figure 1. Field observation of embryonic mortality. (A)
Sampling sites in Taihu Lake; (B) Embryo collected by water grass, red
arrow point to crucian carp embryo; (C-E) Embryonic mortality in
different sites from 2016-2018; (c1) Dead embryo, black arrow point to
dead cell mass. ** p < 0.01, *** p <
0.001.