To develop cultivation activities mass seed production technology is crucial. thus within the gift study an effort was created to provide seeds in controlled condition. the whole larval development took a span of 22-26 days. per Duncan. multiple vary check the larval period is additional or less same for I and III zeal stages. equally II, IV, V and VI zeal stages also are similar. However, I and III and II, IV, V and VI zeal stages area unit considerably varied between one another. A most of ninety fifth of survival was discovered throughout the primary zeal stage and thenceforth the survival was step by step attenuate. The survival share shows that mortality was high altogether zeal and megalopa stages. P Soundarapandian; Seed Production of Commercially vital Portunidae Crab, vortex Ferrate Review articles area unit the outline of current state of understanding on a selected analysis topic. They analyze or discuss analysis antecedently printed by someone and academicians instead of news novel analysis results. critical review comes within the type of systematic reviews and literature reviews and area unit a type of secondary literature. Systematic reviews verify associate objective list of criteria, and realize all antecedently printed original analysis papers that meet the factors. They then compare the results given in these papers. Literature reviews, against this, offer a outline of what the authors believe area unit the most effective and most relevant previous publications. The construct of "review article" is break free the construct of peer-reviewed literature. it's doable for a review to be peer-reviewed, and it's doable for a review to be non-peer-reviewed.