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首页> 外文期刊>African Journal of Biotechnology >Effect of Zn(II) deposition in soil on mulberry-silk worm food chain
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Effect of Zn(II) deposition in soil on mulberry-silk worm food chain

机译：土壤中Zn（II）的沉积对桑蚕蠕虫食物链的影响

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The present study was conducted to evaluate the entrance of Zn(II) into the food chain of?Bombyx mori?(silk worm) from mulberry plants irrigated using Zn(II) containing synthetic effluents. The soil, plant, silkworm and their excreta were sampled to determine Zn(II) amount by using atomic absorption spectrometry (AAS). The amount of Zn(II) deposited by synthetic effluent to soil was increased with pH of the effluent. However, the bioaccumaltion of Zn(II) in?Morus alba?leaves and?B. mori?larvae was high when the effluent pH was in the acidic range.?B. moriexcreted considerable amount of Zn(II) but still most of Zn(II) resided inside its body. The maximum Zn(II) amount detected in soil, leaves, larvae and faeces were 386.51 ± 0.03, 142.85 ± 0.001, 91.375 ± 0.019 and 42.13 ± 0.69 mg/kg, respectively. Zn(II) present in?B. mori?body was responsible for toxic effects on its life cycle. First instar of?B. mori?was most affected by Zn(II) toxicity. Body length, body weight of?B. moridecreased with increase in bioaccumlated Zn(II) amount in larval body. Higher Zn(II) concentration in larval body increased?B. mori?death rate significantly.
机译：本研究的目的是评估Zn（II）进入桑蚕食物链的过程，该桑蚕是用含Zn（II）的合成废水灌溉的桑树植物的。使用原子吸收光谱法（AAS）对土壤，植物，家蚕及其粪便进行采样，以确定Zn（II）的量。合成废水向土壤中沉积的Zn（II）量随废水pH值的增加而增加。然而，Zn（II）在白桑叶和？B中的生物富集。当废水的pH值在酸性范围内时，桑蚕幼虫较高。混合了相当数量的Zn（II），但大部分Zn（II）仍留在其体内。在土壤，叶片，幼虫和粪便中检测到的最大Zn（II）量分别为386.51±0.03、142.85±0.001、91.375±0.019和42.13±0.69 mg / kg。 Zn（II）存在于？B中。桑蚕体是对其生命周期的毒性影响的原因。 B.的第一龄。锌（II）的毒性最大。体长，体重？幼虫体内生物累积的Zn（II）量增加，甲酰胺含量增加。幼虫体内较高的Zn（II）浓度增加？B。死亡率高得多。

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