کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4422502 1308549 2007 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Nonylphenol stimulates fecundity but not population growth rate (λ) of Folsomia candida
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم محیط زیست شیمی زیست محیطی
پیش نمایش صفحه اول مقاله
Nonylphenol stimulates fecundity but not population growth rate (λ) of Folsomia candida
چکیده انگلیسی

The toxicity of nonylphenol (NP) to springtails was pronounced at 40 mg/kg dry weight soil, at which no animals survived. Body length and fecundity were the individual life-history traits significantly stimulated by sublethal concentrations of NP during a 64-day experiment. However, the effects of NP on these traits did not result in a statistically significant increase in population growth rate (λ). Decomposition analysis indicated that fecundity was the main contributor to the (non-significant) changes observed in λ⋅ However, since the elasticity of fecundity was very low, large changes in fecundity resulted in a minimal effect on λ⋅ Juvenile survival had the highest elasticity of all traits, but was not affected by NP, and therefore did not contribute to effects on λ. This study confirms previous studies showing that effects of chemicals on individual life-history traits are attenuated at the population level and that λ is an appropriate endpoint for ecotoxicological studies.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ecotoxicology and Environmental Safety - Volume 67, Issue 3, July 2007, Pages 369–377
نویسندگان
, , ,