Copper Toxicity in Pangasianodon hypophthalmus Fry

Copper Toxicity in Pangasianodon hypophthalmus Fry: Lethal Impact and Aquaculture Implications

Introduction

Understanding copper toxicity in aquaculture species is critical for maintaining sustainable fish farming practices.

This blog post focuses on Pangasianodon hypophthalmus, a commercially important freshwater fish widely cultured in Asia, especially in India and Vietnam.

The excerpt, taken directly from a thesis, provides detailed insights into the lethal concentration of copper (LC50) and its acute effects on fish fry.

These findings are particularly valuable for fishery researchers, aquaculture practitioners, and environmental toxicologists.

The study highlights the relationship between copper concentration and fry mortality, offering statistical and observational data.

With aquaculture’s increasing role in global food supply, such toxicity evaluations are indispensable for protecting both aquatic۔

Excerpt

RESULTS

“The toxicity data of the present experiment indicate a significant positive correlation between dose and mortality…

…They were like hyper excitation, surfacing, spiralling, suffocation, increase in the production of mucus, hitting against the walls of the experimental tanks.

…further studies in the present investigation were conducted at sublethal concentration of the species, which is 1/5th of LC50 value for 96 hrs i.e., 0.0915 ppm.”

DISCUSSION

“Copper sulphate poses toxic effects on Pangasianodon hypophthalmus fry…

…This unbridled growth of the species lead to price crash and the price of pangasius fish decreased from Rs. 50/- to Rs. 30/-…

…the results indicate that mortality rates increased with increasing concentrations of copper as well as with the exposure period to metal.

…In addition, this forms the base line data for further experiments.”

Source Citation

Researcher: Pratima Kumari, S
Thesis Title: Copper toxicity on fry of fresh water edible fish pangasianodon hypophthalmus
Supervisor: Prabhakara Rao, Y
University: Andhra University
Year of Completion: 2012
Exit Page Number: 40

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