1. 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%
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 (N1 – N6) – 6 stages
Proto Zoea (PZ1 -PZ3) – 3 stages
Mysis (M1 – M3) – 3 stages
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 temp. & feed)
Average survival of larvae : %
Average yield per cycle : 1.0 to 2.5 lakhs per cycle
(For a breeder of 100g)

2. Breeding Biology & Hatchery management of Macrobrachium rosenbergii
Weight range of mother prawn g
Average weight for best breeding g
Average fecundity of M. rosenbergii eggs/g BW of female prawn
Hatchability ________________ - 95 – 100%
Breeding programme:
Breeder stocking density : 1 per 2m2 in hatchery tanks both sex
(berried females can be collected from ponds)
Sex ratio : 1 : 4 (male : female)
Hatching time : Mostly night to morning hours
Total number of larval stage : PL (Twelve stages)
: Zoea (L1 – L 11) – 11 stages
PL – 1 stage
Feed to be given : Feeding to be done on 3rd day
: from Larva 2 / 3 stage
: First feeding – Artemia up to Larva 6
: After 15 days – Artemia + minced meat of shrimp
Duration of larval rearing : 25 – 35 days (depending on water temperature)
Average survival of larvae : %
Average yield per cycle : 0.3 – 0.4 lakhs per cycle
(For a breeder of 100g)

3. 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