Abstract: Avian blood parasites are an important model group in the study of parasitic disease and species evolution. On the basis of historical overview on detection of avian blood parasites, we compared the differences in sample preparation, sensibility of detecting prevalence and accuracy of parasites classification between blood smear test methods and molecular biology test methods. We proposed that, to exactly obtain the prevalence of avian blood parasites, it is important to choose test methods based on the research purpose. Metaanalysis indicated that the detection rate of molecular biology method was significantly higher than that of blood smear method. Moreover, blood smear method might underestimate the prevalence when it was low. This article also forecasted the role of molecular technique in promoting the studies of avian blood parasites.

Key words: soybean, drought stress, NAA, antioxidant system.