A preliminary assessment on the toxicity of Thiodan (Endosulfan) to sea cucumbers (Holothuria scabra, Holothuria nobilis and Bohadschia marmorata)

Date of Publication

1992

Document Type

Bachelor's Thesis

Degree Name

Bachelor of Science in Biology

Subject Categories

Biology

College

College of Science

Department/Unit

Biology

Abstract/Summary

A study on the effects of varying concentrations of Thiodan on the mortality rate of sea cucumbers (Holothuria scabra, Holothuria nobilis and Bohadschia marmorata) was conducted at the DLSU Biological Station, Matuod, Lian, Batangas from February 17 to October 3, 1992.The different species of sea cucumbers (Holothuria scabra, Holothuria nobilis and Bohadschia marmorata) were subjected to Thiodan concentrations ranging from a low of 0.1 mg/L to a high of 500 mg/L. Five exposure stages led to the nearest amount of Thiodan concentrations that the sea cucumbers could tolerate. A direct relationship was observed between the different Thiodan concentrations and the mortality rate of the sea cucumbers. The higher the Thiodan concentration, the higher was the mortality rate of the the three species.

Abstract Format

html

Language

English

Format

Print

Accession Number

TU05933

Shelf Location

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

Physical Description

75 leaves ; Computer print-out.

Keywords

Sea-cucumbers; Toxicology, Experimental; Pesticides--Toxicology

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