The transcriptome sequencing and functional analysis of eyestalk ganglions in Eriocheir sinensis treated with different photoperiods

Photoperiod plays an important role in individual growth, development, and metabolism in crustaceans. The growth and reproduction of crabs are closely related to the photoperiod. However, as of yet, there are still no transcriptomic reports of eyestalk ganglions treated under different photoperiods in the Chinese mitten crab (Eriocheir sinensis), which is a benthonic crab with high commercial value in Asia. In this study, we collected the eyestalk ganglions of crabs that were reared under different photoperiods, including a control group (L: D=12 h: 12 h, named CC), a constant light group (L: D=24 h: 0 h, named LL) and a constant darkness group (L: D=0 h: 24 h, named DD). RNA sequencing was performed on these tissues in order to examine the effects of different photoperiods.