Sperm of Doradidae (Teleostei: Siluriformes)
نویسندگان
چکیده
منابع مشابه
Sperm of Doradidae (Teleostei: Siluriformes).
Spermatic characteristics were studied in 10 species representing several distinct groups within the catfish family Doradidae. Interestingly, different types of spermatogenesis, spermiogenesis and spermatozoa are correlated with intrafamilial groups previously proposed for Doradidae. Semi-cystic spermatogenesis, modified Type III spermiogenesis, and biflagellate sperm appear to be unique within...
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There has been much controversy concerning the identity of the components of the suspensorium in Siluriformes (catfishes). This confusion has implications not only for comparative morphology, but also for phylogenetic studies. The identity of the suspensorium components in catfish is reviewed here on the basis of : 1) dissections of numerous catfishes, including members of the most primitive gr...
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One hundred and thirteen specimens of Franciscodoras marmoratus (Reinhardt, 1874) were collected in the upper São Francisco River (18 degrees 12' 32" S, 45 degrees 15' 41" W, state of Minas Gerais) between September, 1999 and January, 2004 to investigate their parasite fauna. From this total, 45 (39.8%) were afflicted by at least one parasite species. The parasitic richness consisted of six spe...
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ژورنال
عنوان ژورنال: Tissue and Cell
سال: 2011
ISSN: 0040-8166
DOI: 10.1016/j.tice.2010.10.006