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United States Department of Agriculture

Agricultural Research Service

Research Project: Genetics, Physiology, and Health Research to Improve Catfish Production

Location: Warmwater Aquaculture Research Unit

Title: Histological and computed tomographic evaluation of a parasitic conjoined twin in hybrid catfish Ictalurus punctatus X I. furcatus

item Leach, Charles -
item Thomas, Michael -
item Cooley, A -
item Waldbieser, Geoffrey
item Bosworth, Brian
item Torrans, Eugene
item Khoo, Lester -

Submitted to: Journal of Fish Diseases
Publication Type: Peer Reviewed Journal
Publication Acceptance Date: April 20, 2013
Publication Date: N/A

Interpretive Summary: A qualitative anatomical analysis was performed on a conjoined twin from a hybrid catfish family due to its rare occurrence. Increased handling of catfish eggs during hybrid production has not led to an increased incidence of conjoined twins.

Technical Abstract: There is growing use of hybrid catfish (Ictalurus punctatus ' X Ictalurus furcatus ') in commercial utilize hybrid vigor to improve production A conjoined twin specimen found during the course of production studies by the United States Department of Agriculture Catfish Genetic Research Unit (USDA-CGRU) was submitted to the Aquatic Research & Diagnostic Laboratory (ARDL). After preliminary inspection, it was transported to Mississippi State University, College of Veterinary Medicine for further evaluation. The specimen was examined using both computed radiography and computed tomography antemortem. Following, humane euthanasia, the specimen was examined both grossly and histologically. Tissues from both fish were also submitted for genetic analysis to determine if twins were derived from the same egg. This report records the presentation and examination of a pair of conjoined hybrid catfish (Ictalurus punctatus X Ictalurus furcatus).

Last Modified: 7/31/2014
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