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Toxicity of Lindane to Freshwater Insect Larvae in Compartments of an Experimental Pond.

Ecotoxicol. Environ. Saf. 23, 76-88 (1992)
The acute and chronic toxicities of lindane to larvae of the freshwater insects Chironomus riparius Meigen, Chaoborus flavicans (Meigen), and Sigara striata (L.) were investigated in mesocosm compartments of an experimental pond. The following median lethal concentrations (LC50s) were determined: 240-hr LC50 of 2.0 μg lindane liter−1 for second instar C. riparius, 72-hr LC50 of 6.5 μg lindane liter−1 for fourth instar C. riparius, and 96-hr LC50s of 4.0 and 3.9 μg lindane liter−1 for fourth instar C. flavicans and fourth or fifth instar S. striata, respectively. Lindane significantly reduced the growth over 10 days of second instar C. riparius compared to that of the control at the treatment concentrations where larvae survived (1.0, 2.5, and 7.0 μg lindane liter−1). A significant increase in the median emergence time in comparison to that of the control was observed for C. riparius exposed to 0.8 and 2.0 μg lindane liter−1, with higher concentrations causing 100% mortality. The findings compare well with previously reported laboratory data on the toxicity of lindane to insects and support the methodology and results of a laboratory growth test for C. riparius.
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Publikationstyp Artikel: Journalartikel
Dokumenttyp Wissenschaftlicher Artikel
ISSN (print) / ISBN 0147-6513
e-ISSN 0147-6513
Quellenangaben Band: 23, Heft: 1, Seiten: 76-88 Artikelnummer: , Supplement: ,
Verlag Elsevier
Begutachtungsstatus Peer reviewed