Evaluation of the rice bran and cassava suspension use in the production of male moina offsprings and ephippia

Initial information about the reproductive characteristics of Moina macrocopa such as the population density and the quality and quantity feed which induces the production of sexual male and female offspring are much needed in the development of ephippia production technology. This research aimed to study the effect of feed quality and quantity, consisting of rice bran and cassava suspension, on moina population growth, male offspring production, and ephippia production. In this study, moina were raised for twelve days using four concentrations of rice bran suspension and three concentrations of cassava suspension. Moina were cultured using rice bran suspension resulted in a peak population five times the peak population produced using the cassava suspension. Feed quality also affected the number of male offspring and ephippia produced. Only moina fed the rice bran suspension feed produced male offspring and ephippia, while the moina fed the suspension cassava feed did not produce any male offspring or ephippia. The four concentrations of rice bran suspension administered in this study produced ephippia with a similar hatching rate; therefore, it could be concluded that the concentration of rice bran suspension in all treatments were adequate in producing ephippia.