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Spermatozoal morphology and ultrastructure of channel catfish, Ictalurus punctatus
Jaspers, E.J.; Avault, J.W. Jr.; Roussel, J.D. (1976). Spermatozoal morphology and ultrastructure of channel catfish, Ictalurus punctatus. Trans. Am. Fish. Soc. 105(3): 475-480. https://dx.doi.org/10.1577/1548-8659(1976)105<475:SMAUOC>2.0.CO;2
In: Transactions of the American Fisheries Society. American Fisheries Society: Bethesda, MD, etc.,. ISSN 0002-8487; e-ISSN 1548-8659, more
Peer reviewed article  
Available in  Authors 
Keywords
    Ictalurus punctatus (Rafinesque, 1818) [WoRMS]
    Marine/Coastal
Authors  Top 
  • Jaspers, E.J., more
  • Avault, J.W. Jr.
  • Roussel, J.D.
Abstract
    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-like 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.
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