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Effects of 3,4-dichloroaniline on fish populations. Comparison between r- and K-strategists: A complete life cycle test with the guppy ( Poecilia reticulata )

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  • Christoph SchÄfers 1
  • Roland Nagel 1
  • 1) Institute of Zoology, Department Ecotoxicology, Johannes Gutenberg-University Mainz, Saarstra\e 21, W-6500, Mainz, Federal Republic of Germany

In order to compare data derived from life cycle tests with zebrafish (Brachydanio rerio Ham.- Buch.), an r-strategist, with data of fish exhibiting a differing strategy of reproduction, a complete life cycle test with the guppy (Poecilia reticulata Peters) was performed with the chemical 3,4-dichloroaniline. The generation of guppies exposed during the whole life span (FI) reacted with more sensitivity than the generation exposed only as adults (Fo): Growth of adult females and reproduction was reduced significantly at 200 ?g/L in Fo, and even at 2 and 20 ?g/L in FI. The survival rates of the early life stages were not influenced at the tested concentrations. There is hardly any difference in acute toxicity of adult guppies and zebrafish. With regard to chronic toxicity at lower concentrations, however, both species react differently: Guppy reproduction is the most sensitive parameter (zebrafish reproduction is not influenced at 200 ?g/L), but zebrafish larvae react most drastically (no survival of larvae at 200 ?g/L in FI, reduced survival of larvae at 20 ?g/L in FII, Nagel 1988). Consequently, zebrafish cannot be a valid model for assessment of the effects of chemicals on populations with differing reproductive strategies.

Catégories Science-Metrix
  • 1 - health sciences
  • 2 - biomedical research
  • 3 - toxicology
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  • 1 - sciences appliquees, technologies et medecines
  • 2 - sciences biologiques et medicales
  • 3 - sciences biologiques fondamentales et appliquees. psychologie
Catégories Scopus
  • 1 - Physical Sciences ; 2 - Environmental Science ; 3 - Health, Toxicology and Mutagenesis
  • 1 - Physical Sciences ; 2 - Environmental Science ; 3 - Pollution
  • 1 - Life Sciences ; 2 - Pharmacology, Toxicology and Pharmaceutics ; 3 - Toxicology
  • 1 - Health Sciences ; 2 - Medicine ; 3 - General Medicine
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  • 1 - science ; 2 - toxicology
  • 1 - science ; 2 - environmental sciences
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Archives of Environmental Contamination and Toxicology

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