Shellfish Breeding and Hatchery Management (2+1)

4.1.1. Nauplius

Newly hatched nauplius is dark yellow in color. They are attracted to light. When at rest, it keeps its dorsal side down, remaining in water in a perpendicular position. The nauplius is a non-feeding stage as it utilizes the reserved nutrients of the egg. As it grows, it moults once in 4-6h. There are 6 nauplii stages. At each moult the size of the body increases along with change in body structure. The duration of nauplii stage is 36-48 h.