Abstract: We investigated the macrozoobenthos at 67 stations in Xiamen coastal waters in May and November 2013, and calculated the secondary productivity (P) of the macrozoobenthos using Brey’s empirical formula (1990). The results showed that the mean secondary productivity and the P/B ratio were 4.6±10.1 g AFDW·m^-2·a^-1 and 1.0±0.4 a^-1 respectively. Molluscs and annelids contributed to the vast majority of the P value. The P value was slightly higher in autumn than in spring, and it was significantly higher in Tongan Bay than in Dadeng area, Jiulong River estuary, the outer sea of Xiamen and Weitou Bay. Correlation analysis indicated that the P value was significantly affected by the organic matter content of sediment and the temperature of bottom water. The nature of the bottom sediment and human activities such as sand excavation, waterway dredging, and environmental pollution also influenced the distribution of P.

Key words: aphid, E-β-farnesene, population dynamic, natural enemy, biological control.