NDLI: Reproductive toxicity of 1-nitronaphthalene and 1-nitropyrene exposure in the mummichog, Fundulus heteroclitus.

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Reproductive toxicity of 1-nitronaphthalene and 1-nitropyrene exposure in the mummichog, Fundulus heteroclitus.

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Reproductive toxicity of 1-nitronaphthalene and 1-nitropyrene exposure in the mummichog, Fundulus heteroclitus.

Content Provider	World Health Organization (WHO)-Global Index Medicus
Author	Onduka, Toshimitsu Ojima, Daisuke Ito, Katsutoshi Mochida, Kazuhiko Koyama, Jiro Fujii, Kazunori
Description	Author Affiliation: Onduka T ( National Research Institute of Fisheries and Environment of Inland Sea, Fisheries Research Agency, 2-17-5 Maruishi, Hatsukaichi, Hiroshima, 739-0452, Japan, onduka@affrc.go.jp.)
Abstract	After pregnant mummichog were implanted with 1-nitronaphthalene or 1-nitropyrene via cholesterol pellet, we investigated the effects of the chemicals on embryo normality, hatchability and days to hatch of normal embryos, and growth and survival of hatched larvae from normal embryos of the implanted mummichog. Hatchability was the parameter most sensitive to the effects of both 1-nitronaphthalene and 1-nitropyrene. The 4-week lowest-observed-effect concentration (LOEC) of 1-nitronaphthalene, based on the actual concentrations in the eggs in the test, was 447 ng g(-1) wet wt.; and the LOEC and no-observed-effect concentration (NOEC) of 1-nitropyrene were 958 and 344 ng g(-1) wet wt., respectively. The 4-week LOEC of 1-nitronaphthalene, based on the concentration in the water, was estimated at 4.8 µg L(-1) by using the reported bioconcentration factor; and the LOEC and NOEC of 1-nitropyrene, based on the concentration in the water, were estimated at 3.1 and 8.6 µg L(-1), respectively. The reported environmental concentrations of 1-nitropyrene and 1-nitronaphthalene are over three magnitudes lower than the toxicity values we obtained. Therefore, the effects of environmental levels of 1-nitropyrene and 1-nitronaphthalene on fish reproduction, not including genomic effects on embryos, appear to be almost negligible. However, DNA damage has been detected in marine organisms exposed to 1-nitropyrene. Further studies of the genotoxicity of nitrated polycyclic aromatic hydrocarbons at environmental levels are therefore needed to evaluate their ecotoxicological risks.
File Format	HTM / HTML
ISSN	09639292
Issue Number	3
Volume Number	24
e-ISSN	15733017
Journal	Ecotoxicology
Language	English
Publisher	Springer
Publisher Date	2015-04-01
Publisher Place	United States
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Discipline Ecology Discipline Environmental Health Discipline Toxicology Fundulidae Physiology Naphthalenes Toxicity Pyrenes Water Pollutants, Chemical Animals Embryo, Nonmammalian Drug Effects Embryology Embryonic Development Female Growth & Development Metabolism Ovary Reproduction Journal Article Research Support, Non-u.s. Gov't
Content Type	Text
Resource Type	Article
Subject	Health, Toxicology and Mutagenesis Medicine Toxicology Management, Monitoring, Policy and Law

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