CYPRINION MACROSTOMUS PDF

Cytogenetic studies in the North American minnows Cyprinidae. Boron A. Karyotypes of diploid and triploid silver crucian carp Carassius auratus gibelio Bloch. Chromosome banding studies of spined loach Cobitis taenia L. Castro J.

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Visit for more related articles at Journal of FisheriesSciences. The nucleolus organizer regions were detected at the end of the short arms of two pairs of medium sized submetacentric chromosomes. Nucleolus organizer region patterns were nearly identical with what that found in most other representatives of the Eurasian Cyprinids.

Keywords Cyprinion macrostomus, nucleolus organizer region NOR , cytotaxonomy Introduction Nucleolus organizer regions NORs are generally determined by metaphase and interphase chromosomes. Silver staining stains acidic proteins, which are associated with fibrillary structure of the NORs, indicate only transcriptional rDNAs. It is reported that this variation in the size of NORs results from cistron numbers and differences in transcriptional activity Galetti et al.

The variation concerned may influence the number of NOR, their localization on the chromosome, their size, and active numbers in each genome Ozouf-Costaz, NORs are used as markers to indicate intra- and inter-species chromosomal polymorphism in many groups of fish Amemiya and Gold, ; Rab et al. In addition, NOR characteristics in European cyprinids and their evolutionary relations are discussed. The fish were transported alive to the laboratory and kept in well aerated aquaria until analysis.

Chromosomes were classified according to Levan et al. Gaffaroglu M. NOR was observed at the end of the short arms of two pairs of medium-sized SM chromosomes. Figure 1. Silver-stained metaphase cell of male Cyprinion macrostomus NOR bearing chromosomes were indicated by arrowheads.

Pekol reported that two different populations of Cyprinus carpio and Leuciscus cephalus had three distinct NOR phenotypes. He noted that the most common phenotypes were localized at the end of the short arms of a pair of SM chromosomes in Beyler population and on the short arms of a pair of M-SM chromosomes in Germectepe population of C.

NOR can be found on the short arm, long arm or in the regions close to the centromere of the chromosome. NOR number may range between one pair and eight.

Although NOR is seen generally at the end of the short arms of ST and SM chromosomes, they may also sometimes be seen at the end of the long arms of SM and ST chromosomes, on the arms of M and A chromosomes, as well as between telomere and centromeres, or adjacent to the centromer Galetti et al.

It was reported that NOR was found at the end of the short arms of an SM and an ST chromosome in Notropis ardens species Gold and Amemiya, , at the end of the short arms of a pair of medium-sized SM chromosomes of Cobitis taenia Boron, , at the end of the short arm of a medium-sized SM chromosome and at the end of the short arm of a large ST-A chromosome of Pimephales signipinnis and P.

In our study, NOR was found on submetacentric chromosomes, too. Our examination did not show any interspecies variation between homologous and non-homologous chromosomes and their arms in terms of NOR size. A polymorphism was found in inter-species NOR number. References Amemiya, C. Cytogenetic studies in the North American minnows Cyprinidae , Hereditas, Boron, A. Chromosome banding studies of spined loach Cobitistaenia L.

Collares-Pereira, M. Fontana, F. Karyotypic characterization of the great sturgeon, Husohuso, by multiple staining techniques and flourescent in situhybridization, Marine Biology, Galetti, P.

Gold, J. Howell, W. Levan, A. Nomenclature for Centromeric Position on Chromosomes, Hereditas, Pekol, S. KastamonuBeylerBarajindakCyprinuscarpio L.

Rab, P. Vitturi, R. Karyotypes analyses reveal inter-individual polymorphism and association of nucleolus- organizer-carrying chromosomes in Caprosaper Pisces: Zeiformes , MarineBiology, Select your language of interest to view the total content in your interested language Viewing options.

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Shakashura A woman letting her feet dangle in a tank in a fish spa. Turkish Journal of Biology, We use cookies to record some preference settings and to analyse how visitors use our web site. Continue Cancel Send email OK. Karyotypic characterization of the great sturgeon, Husohusoby multiple staining techniques and flourescent in situhybridization, Marine Biology The variation concerned may influence the number of NOR, their localization on the chromosome, their size, and active numbers in each genome Ozouf-Costaz, Template updated on 17 December Japanese Journal of Parasitology, Please enter your password Forgotten your password? The seasonal variation in total lipid and fatty acid contents of the gonads of Cyprinion macrostomus Heckel, Cyprinion macrostomus Heckel, un gonatlarinda total lipid ve yag asidi miktarinin mevsimsel degisimi. Chromosomes were classified according to Levan et al. Influence of seasons and sex on the intensity of Pseudolamproglena annulata Boxshall,Lernaeidae infection in Cyprinion macrostomus, a freshwater teleost from the river Tigris Iraq, copepod parasite of fishes.

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CYPRINION MACROSTOMUS PDF

Visit for more related articles at Journal of FisheriesSciences. The nucleolus organizer regions were detected at the end of the short arms of two pairs of medium sized submetacentric chromosomes. Nucleolus organizer region patterns were nearly identical with what that found in most other representatives of the Eurasian Cyprinids. Keywords Cyprinion macrostomus, nucleolus organizer region NOR , cytotaxonomy Introduction Nucleolus organizer regions NORs are generally determined by metaphase and interphase chromosomes. Silver staining stains acidic proteins, which are associated with fibrillary structure of the NORs, indicate only transcriptional rDNAs.

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Cyprinion macrostomum

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