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A Technique for Sexing Channel Catfish
Author(s) -
Norton V. M.,
Davis K. B.,
Nishimura H.
Publication year - 1976
Publication title -
transactions of the american fisheries society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.696
H-Index - 86
eISSN - 1548-8659
pISSN - 0002-8487
DOI - 10.1577/1548-8659(1976)105<460:atfscc>2.0.co;2
Subject(s) - catfish , ictalurus , sexing , biology , anatomy , genitourinary system , urinary system , oviduct , fish <actinopterygii> , sex organ , urinary bladder , urination , andrology , zoology , medicine , fishery , endocrinology , genetics
A simple, accurate technique has been devised to sex externally channel catfish, Ictalurus punctatus, regardless of body size or state of gonadal maturation. Male catfish have a single urogenital opening; females have two openings partitioned by a septum—an anterior genital pore, and a posterior urinary pore. In male fish, a single probe can be inserted into the urinary bladder through the urogenital pore. Female fish are differentiated from males by the insertion of two probes, one into the urinary bladder through the urinary pore and the second into the oviduct through the genital pore.