Toxicity of Coconut Fatty Alcohol Sulfates (CFAS) to the midge, Chironomus sp.

Date

3-2002

Degree

Bachelor of Science in Biology

Major Course

Major in Ecology Genetics

College

College of Arts and Sciences (CAS)

Adviser/Committee Chair

Lourdes V. Castillo

Abstract

This study was conducted to determine the toxicity of Coconut Fatty Alcohol Sulfates (CFAS) to ( Inronomus sp. Eggs and third-instar larvae of Chironomus sp. were exposed to different concentrations of CFAS in aged tap water for 24 and 48 hr. Fifty-percent of the eggs did not hatch between !ppm to lOppm CFAS for the two set-ups used. These set-ups are the eggs laid on CFAS-containing water and the other set-up contains eggs laid before the addition of CFAS. The 12 hr-, 24 hr- and 48 hr-LC, are 145.07, 28.55 and 8.5 mg 1., respectively. The toxicity of CFAS based on 24 hr and 48 hr LC5o is lower than the reported values. The study was conducted in the Institute of Biological Sciences. University of the Philippines Los Banos. Culture of the test organisms was started in June 2001 and the toxicity tests started in January 2002.

Language

English

Location

UPLB Main Library Special Collections Section (USCS)

Call Number

Thesis

Document Type

Thesis

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