International Science Community Association International Research Journal of Biological Sciences 2278 - 3202 2 1 2013 January 10 Realized Fecundity in the First Brood and size of Eggs of Chinese Mitten crab (Eriocheir sinensis)- Laboratory Studies 1 6 EN CzerniejewskiPrzemyslaw 1 Dept. of Fisheries Management, Westpomeranian University of Technology in Szczecin, Krolewicza 4, PL–71–550 Szczecin, POLAND Dipartimento di Matematica, Universita' di Bari, via Orabona, 4, 70125 – Bari, ITALY DeGiosa Marcello 2 > Research Paper 2012 6 29 2013 January 10 The Chinese mitten crab was collected from north part of Szczecin Lagoon (The Odra river estuary)within 12 October–6 December 2008 and 5 October–3 December 2010, to investigate some reproduction aspects in laboratory. This study was carried out to estimate the fecundity during oviposition period in first brood of Chinese mitten crab, eggs size and describe relation to various morphometric characters such as carapace width and height and body weight. The results showed that the fecundity of Eriocheir sinensis range from 141100 to 686200 eggs (mean 461100 eggs per female) with first brood, and mean eggs size were 371,4 µm (range 361 - 375µm). All the morphometric characteristics studied showed positive correlation with fecundity and the degree of relationship varied considerably. Among these, the carapace width was found to be the best morphometric character for predicting the fecundity of Chinese mitten crab. Copyright@ International Science Community Association