On the spawning and early development of the marine prawn, Parapenaeopszs stylifera (H. Milne Edwards) in the laboratory

Marine penaeid prawns of the species, Parapenaeopsis stylifera (H. Milne Edwards) kept in tanks in the laboratory have successfutly spawned. The larvae were reared upto Mysis I stage. The eggs have taken an average of 7 hrs for hatching. The larvae passed through five naupliar stages and reached Protozoea stage in 38-40 hrs. Passing through two more protozoeal substages they meta- morphosed into Mysis I stage within 8 days 18 hrs to 9 days 17 hrs. Brief descriptions of various larval stages are given