No abstract

Mud crab is one of the most commercially important shellfish species in Bangladesh, ranking second after shrimp and prawn (in terms of export earnings) due to its high demand in the international markets (Rahman et al., 2017). Among the 15 crab species in Bangladesh, mud crab Scylla olivacea, previously known as Scylla serrata (Rouf et al., 2016), is the only commercially important crab species. It is abundant in coastal water bodies, including estuaries, tidal canals and rivers, the Sundarbans mangrove swamps, and shrimp ghers (i.e. low-lying agricultural fields with elevated surrounding embankments/borders created by the side of a river that are used for growing paddy in winter and shrimp in summer through to fall;Milstein et al., 2005