The growth of females is hampered
by the presence of males indicated by a lower
yield (Sagi et al. 1986) and the di¡erences in interand
intra-sex growth rates a¡ect prawn culture
causing more variation on body size at harvest, total
yield and product value (Malecha1983a; Hulata, Karplus,
Wohlfarth & Halevy1988).