1. Qualities of shellfish broodstock
Size range of brood crabs
Sex
S.tranquebarica
S. serrata
( Carapace width in mm / Total weight in g)
Males
mm / g
mm / g
Females
mm / g
mm / g

2. Breeding Biology & Hatchery management of Penaeus monodon
Weight range of mother shrimp g
Average weight for best breeding g
Average fecundity of P. monodon lakhs per female shrimp of 100g
Hatchability _________________ - 95 – 100% (sometimes fractional)
Breeding programme:
Breeder stocking density : 1per 2 m2
Breeder type : Impregnated in wild waters (females)
(to be collected for every breeding)
Hatching time : Early morning hours – induced by EDTA
Total number of larval stage : 12 (Twelve stages)
: Nauplii 1 – 6
Proto Zoea 1 -3
Mysis 1 – 3
Feed to be given : First feeding Micro algae – Skeletonema or
Tetraselmis
After PZ 3 – Artemia and Spirulina
Duration of larval rearing : 13 – 15 days (depending on water temperature)
Average survival of larvae : 20 %
Average yield per cycle : 1.0 to 2.5 lakhs per cycle
(For a breeder of 100g)