1Institute of Aquaculture, College of Fisheries and Ocean Sciences, University of the Philippines Visayas, Miagao5023, Iloilo, Philippines
2National Institute of Molecular Biology and Biotechnology, University of the Philippines Visayas, Miagao5023, Iloilo, Philippines
3Cebu Technological University, San Francisco6050, Cebu, Philippines
4Institute of Aquatic and Applied Sciences, Davao Del Norte State College, Panabo8105, Davao del Norte, Philippines
*Corresponding author: Marlon S. Alejos Ph.D. in Fisheries Student, Institute of Aquaculture, College of Fisheries and Ocean Sciences, University of the Philippines Visayas, Miagao, Iloilo, Philippines E-mail: msa0585@yahoo.com
The hatching of fairy shrimp Branchinella thailandensis from Thailand was studied. The fairy shrimp cysts were subjected to different temperature regimes [ambient (26-29°C), 30°C, 32°C, and 34°C] and examined the experimental condition’s effect on hatching until no hatching occurred. Results indicated that temperature affects the hatching of the Thai fairy shrimp B. thailandensis cysts. The hatching of the fairy shrimp could occur once at 34°C and can be stimulated at 32°C, but fluctuating temperatures (26-29°C) and 30°C may reduce hatching success. However, the incubation period took longer, and hatching success was extremely low, suspected of improper cysts production technique and processing. In conclusion, the hatching of fairy shrimp B. thailandensis can be improved at 34°C but optimal at 32°C.
Anostraca, B. thailandensis, Cysts, Temperature, Nauplii, Hatching, Cumulative
