The Karyotype of Scoloplax distolothrix (Teleostei: Siluriformes: Scoloplacidae)
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چکیده
منابع مشابه
Karyotype variability in eight species of the subfamilies Loricariinae and Ancistrinae (Teleostei, Siluriformes, Loricariidae)
Loricariidae is one of the largest fish families of the world, with about 650 species separated into six subfamilies. To date, cytogenetic data on only 56 species of this family are available. In the present study, the karyotypes of three Ancistrinae species and five Loricariinae species were studied. The lowest diploid number, 2n=38, was observed in Ancistrus n.sp. 1 (Ancistrinae) and the high...
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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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The karyotypic characteristics of chub, Squalius cephalus have been investigated by examining metaphase chromosomes spreads obtained from gill and kidney tissues. The fish used in the study were caught with fishing nets from Dumlu Stream, one of the main tributaries of the Karasu River. The live fish were transported to the laboratory, kept in a well aerated aquarium before analysis and then...
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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...
متن کاملMonophyly and Phylogenetic Diagnosis of the Family Cetopsidae, with Synonymization of the Helogenidae (Teleostei: Siluriformes)
de Pinna, Mdrio C.C., and Richard P. Vari. Monophyly and Phylogenetic Diagnosis of the Family Cetopsidae, with Synonymization of the Helogenidae (Teleostei: Siluriformes). Smithsonian Contributions to Zoology, number 571, 26 pages, 20 figures, 1995.—The Neotropical catfishes currently recognized as the families Cetopsidae and Helogenidae are hypothesized to be sister groups. The two taxa share ...
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ژورنال
عنوان ژورنال: CYTOLOGIA
سال: 2006
ISSN: 0011-4545,1348-7019
DOI: 10.1508/cytologia.71.257