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Spermatozoal Morphology and Ultrastructure of Channel Catfish, Ictalurus punctatus
Author(s) -
Jaspers Edmonde J.,
Avault James W.,
Roussel Joseph D.
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<475:smauoc>2.0.co;2
Subject(s) - ictalurus , catfish , ultrastructure , morphology (biology) , zoology , fishery , biology , channel (broadcasting) , anatomy , fish <actinopterygii> , engineering , telecommunications
The morphology, dimensions, aberrations, and ultrastructure of channel catfish (Ictalurus punctatus) spermatozoa were studied. Spermatozoa of a wild catfish stock from Louisiana were compared to those of a domestic stock from Mississippi. The spermatozoon of channel catfish consists of a rounded dark head, a collar‐dike midpiece, and a long flagellum. The average dimensions were: head length, 2.3 μm; midpiece length, 1.6 μm; midpiece width, 3.1 μm; and flagellum length, 94.9 μm. The flagellum had the classical (2.9 + 2) axoneme. On the average, 4.7% of the spermatozoa in the fish studied were biflagellar. Each flagellum arose from an individual centriolar complex. Domestic fish stock had a higher percentage of normal gametes compared to wild stock.