Toxicity of cadmium to Pomacea sp.

Date of Publication

1997

Document Type

Bachelor's Thesis

Degree Name

Bachelor of Science in Biology

College

College of Science

Department/Unit

Biology

Abstract/Summary

Acute toxicity test was conducted to determine the mortality rate of Pomacea sp. exposed to different concentrations of cadmium. The 96-hr LC50 value of cadmium to Pomacea sp. was also determined. Three replicates having 10 snails each were used per concentration. Results of the definitive test showed that mortality of Pomacea sp. increased with increasing cadmium concentration. At 1.00 mg/I, it was observed to have 1 16.67% mortality. A 26.67% and 36.67% mortalities were observed at 1.50 mg/I and 2.00 mg/I, respectively. At 2.50 mg/I, 43.33% mortality was recorded and 46.67% mortality at 3.00 mg/I. Snails exposed to 3.50 mg/I and 4.00 mg/I of cadmium had 53.33% and 76.67 % mortalities respectively. A mortality of 100% was recorded at 5.00 mg/I. The control group showed 10.00% mortality. The 96-hr LC50 value computed using the Trimmed Spearman-Karber Analysis was 2.751 mg/I.

Abstract Format

html

Language

English

Format

Print

Accession Number

TU08441

Shelf Location

Archives, The Learning Commons, 12F, Henry Sy Sr. Hall

Physical Description

31 leaves

Keywords

Cadmium--Toxicology; Snails; Toxicity testing

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