Oxytetracycline Induced Photosensitivity in Channel Catfish (Ictalurus punctatus)

Photosensitivity following injection with oxytetracycline was evaluated in channel catfish. In a controlled experiment, only oxytetracycline-injected fish that were exposed to direct sunlight exhibited necrotic ocular and dorsolateral epidermal lesions. All of the affected fish died within 8 d. All of the fish from three different control groups had no symptoms. Control groups were (1) saline-injected/sunlight-exposed, (2) saline-injected/indoor light, and (3) oxytetracycline-injected/indoor light. The saline injected/sunlight-exposed controls (all of which remained asymptomatic) were held in the same pond at the same time with the oxytetracycline-injected/sunlight-exposed experimentals (all of which developed characteristic photosensitivity lesions and subsequently died). The necrotic lesions are presumed to have been caused by photosensitivity reactions initiated when tissues exposed to oxytetracycline were simultaneously exposed to ultraviolet light.

Name thesis:degree_name

Master of Science

Level thesis:degree_level

Masters

Discipline thesis:degree_discipline

Biology

Grantor

Southwest Texas State University

Year dc:date.issued

1993

Author dc:creator

• Stacell, Mark A.

Advisor dc:contributor.advisor

• Huffman, David G.

Committee members dc:contributor.committeemember

• Whiteside, Bobby G.
• Rosenblum, Paul M.

• channel catfish
• biological photosensitization
• oxytetracycline

Language dc:language.iso

en

Handle dc:identifier.uri

https://hdl.handle.net/10877/21702

OAI identifier oai:identifier

oai:digital.library.txst.edu:10877/21702