Title : Thalassiosira subitis was isolated from Tam Giang Lagoon, Vietnam as a feed for the rotifer Branchionus plicatilis
Abstract:
A microalgae strain of Thalassiosira subtilis was isolated from Tam Giang Lagoon in Thua Thien Hue, Vietnam, using a single-cell micropipette technique in F2 medium. Microalgae and rotifers of medium size (Branchionus plicatilis) were cultured in the plastic cans with 12-h light/12-h dark and air bubbling. To test the effect of salinity and light intensity on the growth of Thalassiosira subtilis, the salinity was tested at three levels: 25, 30 and 35‰. A total of three distinct light intensities were tested, including 2510 lux, 2733 lux, and 3450 lux. After 14 days of culture, the microalga reached its highest concentration at 25‰ of salinity, with a growth rate of 0.43 and a maximum density of 301 x106 cell.mL-1. Our data indicate that microalgae were efficient at high light intensities of 2733 lux. In addition, the rotifer shown consumes Thalassiosira subtilis better than yeast feeding. This indicates that the local microalgae Thalassiosira subtilis is a high-potential candidate for rotifer feed.
Keywords: Microalgae, Thalassiosira subtilis, Branchionus plicatilis, rotifer, feed, salinity, light intensity.
What will audience learn from your presentation:
This presentation provides information on live food for aquaculture. The study focused on microalgae as a rotifer feed.
The primary data in this research can open up further research into improving and diversifying the feed sources for aquatic animals.
