{"refrec":{"BRefID":3552,"RR":"<b>Jaspers, E.J.; Avault, J.W. Jr.; Roussel, J.D.</b> (1976). Spermatozoal morphology and ultrastructure of channel catfish, <i>Ictalurus punctatus</i>. <i>Trans. Am. Fish. Soc. 105(3)</i>: 475-480. <a href=\"https://dx.doi.org/10.1577/1548-8659(1976)105<475:SMAUOC>2.0.CO;2\" target=\"_blank\">https://dx.doi.org/10.1577/1548-8659(1976)105<475:SMAUOC>2.0.CO;2</a>","BEntID":3552,"PublicFlag":1,"CheckedFlag":0,"wosflag":1,"vabbflag":null,"RefStringPartII":". <i>Trans. Am. Fish. Soc. 105(3)</i>: 475-480. <a href=\"https://dx.doi.org/10.1577/1548-8659(1976)105<475:SMAUOC>2.0.CO;2\" target=\"_blank\">https://dx.doi.org/10.1577/1548-8659(1976)105<475:SMAUOC>2.0.CO;2</a>","DocTypID":8,"DocType":"Journal article","MarineFlag":1,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"Jaspers, E.J.; Avault, J.W. Jr.; Roussel, J.D.","OrigTitleTranslFlag":0,"Authorstringtrunc":"Jaspers, E.J.; Avault, J.W. Jr.; Roussel, J.D.","Englishabstract":"The morphology, dimensions, aberrations, and ultrastructure of channel catfish (<i>Ictalurus punctatus</i>) 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. 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