关键词: 松毛虫颊狭寄蝇, 发育起点温度, 积温, 生殖力, 生命表参数

Abstract: An indoor culture experiment was conducted to study the temporal change patterns of chlorophyll content and reflectance spectra of algae from Taihu Lake under different Fe(Ⅲ) supply. Derivative spectrophotometry and red edge optical parameter were employed to quantitatively extract the algal spectral data, and correlation analysis was made between the algal spectral data and algal chlorophyll and Fe(Ⅲ) contents. Based on these, the quantitative relationship of supplied Fe(Ⅲ) concentration – algal chlorophyll content – algal spectra was established. The results showed that supplying appropriate concentration (18 μmol·L^-1) Fe(Ⅲ) was conducive to the algal growth and chlorophyll synthesis. High concentration (30 μmol·L^-1) Fe(Ⅲ) promoted the synthesis of algae chlorophyll at the prophase of culture, but inhibited it at the anaphase. Fe-deficiency significantly inhibited the synthesis of chlorophyll. Under different Fe(Ⅲ) supply, there existed significant correlations (P<0.05) between the vegetation indices SR₇₀₅ and ND₇₀₅, red edge position, and the chlorophyll content of algae.

Key words: Carcelia matsukarehae, Developmental zero, Accumulated temperature, Fecundity, Parameters of life table