✦ LIBER ✦

Pesticide (hexachlorocyclohexane) inhibition of growth and nitrogen fixation in blue- green algae Anabaenopsis raciborskii and Anabaena aphanizomenoides

✍ Scribed by B. Das; Dr. P. K. Singh

Publisher: John Wiley and Sons
Year: 2007
Tongue: English
Weight: 457 KB
Volume: 18
Category: Article
ISSN: 0233-111X
DOI: 10.1002/jobm.19780180302

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✦ Synopsis

Abstract

The effects of the pesticide hexachlorocyclohexane (HCH) on the nitrogen fixing blue‐green algae Anabaenopsis raciborskii and Anabaena aphanizomenoides commonly found as blooms in fish ponds were studied. These algae were very sensitive to HCH, and a distinct decrease in growth rate was observed on prolonged incubation. Lower concentrations (10 μg/ml) were algistatic and higher concentrations (60 μg/ml) were algicidal. The inhibition of nitrogen fixation indicated that the presence of HCH might affect overall nitrogen economy of inland waters.

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