湖南科技大学学报（自然科学版）

文章摘要

Zn2+在不同世代黑水虻体内累积及分布规律

Accumulation and distribution of heavy metal Zn2+ in two successive generations black soldier fly Hermetia illucens L. (Dipetra: Stratiomyidae)

DOI：

中文关键词: Zn2+ 黑水虻累积分布

英文关键词: Zn2+ Hermetia illucens accumulation distribution

基金项目:国家自然科学基金(31040075,31260528);广东省医学科研基金(A2012621)

作者	单位
夏嫱1,廖业1,朱伟1,喻国辉2,陈远凤2	1.遵义医学院珠海校区,广东珠海 519041 2.珠海市农业科学研究中心,广东珠海 519075

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中文摘要:

通过在人工饲料中添加不同浓度Zn2+(75,150,300,600,1 200 mg/kg),研究了饲料中不同浓度Zn2+在连续2代不同发育阶段黑水虻体内的积累及幼虫不同组织的分布规律.结果表明,过量的Zn2+可在6龄幼虫、蛹和成虫体内积累,且Zn2+含量为6龄幼虫＞成虫＞蛹,然而,同一世代不同发育阶段虫体内的Zn2+含量不存在显著差异;但第2代受高剂量Zn2+胁迫虫体内Zn2+含量均显著高于第1代.Zn2+可在黑水虻5龄末幼虫表皮、脂肪体及中肠中累积,连续2代分布规律均为中肠＞脂肪体＞表皮,第2代各组织中Zn2+含量均高于第1代;在300 mg/kg Zn2+浓度下,第2代5龄末幼虫表皮和脂肪体中的Zn2+浓度与第1代存在显著差异,在高剂量(600和1 200 mg/kg) Zn2+处理浓度下,中肠中Zn2+含量显著高于第1代.

英文摘要:

Artificial diets added with different concentrations of Zn2+(75, 150, 300, 600, 1 200 mg/kg) were fed on black soldier fly Hermetia illucens L. larvae for 2 generations, and contents of Zn2+ accumulation in different developmental stages of H. illucens and distribution in different tissues of the 5thinstar larvae were detected. Results showed that excessive Zn2+ accumulate in the 6th instar larvae , pupae and adults, and the order of Zn2+ contents in different stages is 6 instar larvae > adults > pupae. However, no significant difference is occurred in the different developmental stages’ H. illucens from the same generation. At the same time, Zn2+ contents from ones stressed with high-levels of Zn2+ in the 2ndgeneration are significantly higher than those in the 1st generation. Zn2+ accumulate in epidermis, fat body and midgut of the 5thinstar larvae. In the 2 successive generations, Zn2+ content in different tissues is in the order of midgut > fat body > epidermis, and the Zn2+ contents in 2nd generation are all significantly higher than those in the 1stgeneration. Furthermore, Zn2+contents in epidermis and fat body of the 2nd generation are significantly higher than those in the 1stgeneration under treatment with 300 mg/kg Zn2+. Significantly higher Zn2+ contents are found in midgut of 600 and 1 200 mg/kg Zn2+ stressed larvae from the 2ndgeneration when comparing to the 1st generation.

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