AI Article Synopsis
- The exposure of Folsomia candida to zinc-contaminated food led to reduced growth and lower final fresh weight, especially at 20 mg/g dry food.
- At a lower exposure level of 5 mg/g dry food, significant negative effects were observed, including longer juvenile periods, delayed development, smaller first clutches, reduced egg viability, and fewer individuals reaching reproductive maturity.
- The analysis indicated that the juvenile period was the most sensitive factor affecting the population growth rate of springtails in contaminated environments.
Article Abstract
The effect of zinc on growth and reproduction of the springtail Folsomia candida has been determined for individual animals exposed to contaminated food. Zinc caused a decrease in growth of the springtails, which resulted in a decrease in the estimated final fresh weight at the highest exposure level (20 mg/g dry food). Other effects were observed from 5 mg/g dry food and included an increase of the juvenile period, an increase of development time, a reduction in first-clutch size and egg viability, and a reduction in the number of individuals reaching the reproductive state. The effect of these changes on the population growth rate was evaluated using an estimated value for mortality in the field. In the present analysis, the juvenile period was the most sensitive variable.
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| http://dx.doi.org/10.1897/03-287 | DOI Listing |
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