Accumulation of cadmium and its effects on growth,development and hemolymph biochemical compositions in Boettcherisca peregrina larvae (Diptera: Sarcophagidae)

• 来源期刊: 中国昆虫科学（英文版）
• 关键词: Boettcherisca peregrina cadmium caloric value growth and development lipids proteins total sugar
• 年，卷（期）: 2006,（1）
• 页码范围: 31-39
• 页数: 9页
• 语种: 英文

摘要

Newly emerged larvae of the fleshfly, Boettcheriscaperegrina were exposed to two different CdCl2 concentrations of 100 μg/g and 400 mg/g diet fresh weight (DFW). They were administered in the diets until the end of larval stage. Cd-exposed larvae accumulated significant amounts of Cd and this accumulation increased with the exposure dose and time.The body weights were lightened and lengths of larvae were shortened considerably after Cd exposure, especially at the higher Cd concentration. The total larval duration was also extremely affected due to Cd exposure. The average duration was prolonged significantly by 14 h at the lower Cd concentration, while it was increased by 33.7 h over controls at the higher Cd concentration. A significant decrease in contents of either soluble proteins, total lipids or caloric values in the hemolymph occurred due to Cd exposure throughout the entire tested period but after 120 h of Cd exposure. In contrast, when exposed to Cd with its higher concentration, total sugar contents in the hemolymph were increased strikingly over the whole tested time, except after 96 h of Cd exposure, while they were not apparently altered except after 24 h of Cd exposure at the lower concentration. Thus, it is suggested that Cd exposure shows significant adverse impact on the growth and development, as well as metabolism, in larvae of this fleshfly, depending on its exposure time and dose.