Effects of different culture medium on two Botryococcus braunii Growth and Oil-production Characteristics of Eustigmatos vischeri Hibberd under Different Cultivation Modes Effects of nitrogen sources on the growth, contents of total lipids and total hydrocarbons of Botryococcus braunii Effects of dietary nickel on the energy reserves in the hemolymph of different developmental stages of Spodoptera litura Fabricius