Effects of copper,lead and zinc in soil on egg development and hatching of Folsomia candida

• 来源期刊: 中国昆虫科学（英文版）
• 关键词: metal pollution soil springtail hatching success metamorphosis toxicity test ultrathin sectioning
• 年，卷（期）: 2009,（1）
• 页码范围: 51-55
• 页数: 5页
• 语种: 英文
• DOI: 10.1111/j.1744-7917.2009.00253.x

摘要

Effects of CaCl2,CuCl2,ZnCl2 and PbCl2 on development and hatching Success of eggs of Folsomia candida(Collembola)were studied under laboratory conditions.Thousands of healthy eggs from synchronized cultures were incubated in soils treated with different concentrations of the metals.Compared with the water control.egg hatch signifi-cantly decreased when concentrations of Cu,Pb and Zn reached 400,1 600 and 800 mg/kg dry soil,respectively.Values of EC50(hatching),calculated according to the exponential model (with 95%confidence limits in brackets),were 625(407-875),2361 (2064-2687)and 1763(1548-2000)mg/kg dry soils for Cu,Pb and Zn,respectively.When Cu concentration reachedl 600mg/kg dry soil,eggs became green and the percentage of green eggs changed from 5%-20%after incubadon for 2 daysto 15%-30%after incubafion for 4 days.At3200mg Cu/kg dry soil,tissues inside eggs were black and shrunken.