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Updated: Aug 7, 2026
16:08
Microinjection of CRISPR/Cas9 Protein into Channel Catfish, Ictalurus punctatus, Embryos for Gene Editing
Published on: January 20, 2018
Summary
Researchers identified a contagious cancer causing black splotches on fish. This discovery in brown bullhead catfish is the first transmissible cancer found in fish, prompting further investigation into its spread and broader implications for cancer biology.
Area of Science:
- * Ichthyology and comparative oncology
- * Fish health and disease ecology
Background:
- * Brown bullhead catfish in New England and Canada exhibit unusual black splotches.
- * The etiology of these lesions has been a subject of investigation.
Purpose of the Study:
- * To determine the cause of black splotches on brown bullhead catfish.
- * To investigate the potential for a transmissible disease, specifically cancer, in fish populations.
Main Methods:
- * Field observations of affected fish populations.
- * Diagnostic analysis of tissue samples to identify pathological characteristics.
- * Comparative analysis with known transmissible cancers in other species.
Main Results:
- * Black splotches are indicative of a transmissible cancer.
- * This represents the first documented instance of a transmissible cancer in fish.
- * The affected fish were observed in lakes across New England and Canada.
Conclusions:
- * The identified cancer in brown bullhead catfish is transmissible.
- * This finding necessitates further research into the cancer's origin, transmission dynamics, and geographic prevalence.
- * The study offers potential insights into cancer biology and evolution across species.
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