“…In individual contribution sodium is maximum in berried females (53.36mg) followed by females (46.71mg) and males (37.48mg) of C.lucifera. Sodium was already reported in P.sanguinolentus (Sudhakar et al, 2009), S.tranquebarica (Thirunavukkarasu, 2005), E.sinesnsis (Chen et al, 2007), C.amnicola (Moronkola et al, 2011), P. potamios (Bilgin and Fidanbas, 2011), C.amnicola and U.tangeri, (Udo Paul Jimmy and Vivian Nneka Arazu, 2012), Cardisoma armatum and C.amnicola (Omotayo et al, 2013), C.natator (Soundarapandian et al, 2013c), P.vigil (Soundarapandian et al, 2014), C.lophous (Kathirvel et al, 2014) and S. hydrodroma (Varadharajan and Soundarapandian, 2014). Sodium is the principal cation of the extra cellular fluid and regulator of its volume.…”