Effects of different diets and seawater system

Kritsanapuntu, S., Chaitanawisuti, N., & Natsukari, Y. (2007). Effects of different
diets and seawater systems on egg production and quality of the broodstock
Babylonia areolata L. under hatchery conditions. Aquaculture research, 38(12),
1311-1316.

Abstract
The broodstock of spotted Babylon snail, Babylonia areolata, were conditioned in
indoor tanks under two seawater systems (static system and flow-through system)
and five types of foods (fish, shrimp, squid, green mussel and formulated diet).
High survival and good feeding was found from broodstock conditioned in all
treatments of seawater systems and diets. All broodstock showed active behaviour
with no signs of stress as exhibited by active movement and feeding, protrusion of
siphonal tube and constant egg laying throughout the experiment. Two-way
analysis of variance showed that there were no significant differences (P>0.05) in
the total yield of egg capsules, size of egg capsules, size of newly hatched larvae
and growth of larvae among broodstock B. areolata conditioned in the seawater
system and diet treatments, but there were significant differences (P>0.05) in the
frequency of egg capsule laying, number of fertilized eggs/embryos per capsule,
total yield of fertilized eggs/embryos and final survival of larvae among broodstock
B. areolata conditioned in the diet treatments. We present initial evidence that the
seawater system had a stronger influence on the egg production and quality of
broodstock B. areolata than conditioning diets.