首页|Effects of a 28-day early life stage exposure to carbaryl on fathead minnow long-term growth and reproduction

Effects of a 28-day early life stage exposure to carbaryl on fathead minnow long-term growth and reproduction

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  • NSTL
  • Elsevier
? 2021The US Environmental Protection Agency conducts ecological risk assessments with a battery of fish toxicity tests that include acute, early life stage, and reproduction tests. While endpoints in these tests (survival, growth and reproduction) are conceptually related, because they are measured in separate exposures, the quantitative relationships between them are difficult to determine and largely ignored. In the current test, fathead minnows (FHM) were exposed for 28 days to 1 mg/L or 2 mg/L carbaryl, a well-studied carbamate insecticide, in early life stages and then reared in clean water until adulthood, when reproduction was assessed. Also. weekly growth measurements were taken throughout the test to determine growth rates during and after exposure. Growth curves derived from these measurements were then compared to the reproductive output. The data indicate that carbaryl reduced growth rate only for a brief time early in the exposure. However, this brief effect impacted overall growth into adulthood and lowered the reproductive output of exposed FHM. The effect of a transient exposure early in life to carbaryl could have later population-level impacts by causing mortality, lowering growth rates, and reducing reproductive output.

Fathead minnowGrowthPesticideReproduction

Flynn K.、Kadlec S.、Etterson M.、Kurker V.

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USEPA Office of Research and Development Center for Computational Toxicology and Exposure Great Lakes Toxicology and Exposure Division Systems Toxicology Branch

USEPA Office of Research and Development Center for Computational Toxicology and Exposure Great Lakes Toxicology and Exposure Division Translational Toxicology Branch

USEPA Office of Chemical Safety and Pollution Prevention Office of Pesticide Programs Health Effects Division

2022

10.1016/j.aquatox.2021.106018

Aquatic Toxicology

Aquatic Toxicology

SCI
ISSN：0166-445X
年,卷(期)：2022.242
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