On the growth of Penaeus indicus experimented in cages at different densities in a selected nursery ground

Abstract

Effect of different densities on the growth of Penaeus indicus was studied in a higly productive nursery ground located at Ramanthuruth Island (lat. 9~'58'50"N, long. 76~'15'40"E) using cages. Eight cages of the same size were placed with prawns in sets of 5, 10, 20, and 40 of the nearest size range (between 30 and 35 mm) and their growth was recorded once in every fortnight for six months. The average growth in length in the first month in different densities were 28.1, 22.00, 18.6 and 10.4 mm respectively which progressively decreased in subsequent months. The relevance of the present experiment in the culture of P. indicus is discussed