Document Type

Thesis

Abstract

This study examines the effects of acute exposure to crystal violet (CV) on the freshwater zooplankton Daphnia pulex in response to growing concerns over synthetic dyes from industrial runoff in aquatic ecosystems. The primary objective is to assess CV's impact on D. pulex's heart rate, mobility, morphology, and lethality via a series of acute exposure tests. 48-h acute toxicity (0-2000 μg/L), 48-h immobilization (0-180 μg/L), and 9-h heart rate (0-2,000 μg/L) tests were conducted using third-generation daphnids, followed by stereomicroscopic examination and statistical analysis. Results showed increasing mortality and decreasing mobility and heart rate with increasing CV concentration; the 48-h LC50 and 48-h EC50 values were 629.4 μg/L and 75.9 μg/L, respectively. This project aims to advance ecotoxicological research and provide insight into the physiological effects of effluent CV on Daphnia, offering a model for understanding the broader implications of dye pollution in freshwater environments.

Disciplines

Ecology and Evolutionary Biology | Environmental Health | Life Sciences | Marine Biology | Other Pharmacology, Toxicology and Environmental Health | Pharmacology, Toxicology and Environmental Health | Terrestrial and Aquatic Ecology | Toxicology

Publication Date

12-1-2024

Language

English

Faculty Mentor of Honors Project

Matthew Walsh

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