Localization of nucleolar organizing regions in European hedgehogs (Insectivora, Mammalia)

Mandahl, Nils

doi:10.1111/j.1601-5223.1979.tb01657.x

Cited by 10 publications

(13 citation statements)

References 38 publications

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“…Therefore, differentiation in number and localization of NORs are considered to be important in the evolution of species. Similar results have been reported for two European shrew species (OLERT and SCHMID 1978), the Western and Eastern hedgehog (MANDAHL 1979) and also for various inbred mouse strains . More recently, WINKING et al (1980) found a wide variation in the localization of NORs in feral mice within the genus Mus and Mus musculus subspecies.…”

Section: Discussionsupporting

confidence: 89%

“…Similar results are reported by MIKELsAAR et d. (1977) for man, where the average frequency of homozygously occurring N O R sites was 75 O/ O. Contrary data are given by MANDAHL (1979) for the hedgehog, having only the low number of 44 % stained NORs.…”

Section: Discussionsupporting

confidence: 88%

“…Hybridization studies between mouse and human cells increased our knowledge of the function of silver stained NORs indicating the positively stained NORs as being transcriptionally active during the preceding interphase (MILLER et al 1976a, b;CROCE et al 1977). Comparative studies ascertained that the number, distribution and the amount of silver staining of NORs reflect a genetic peculiarity which differentiates not only individuals but also species TANTRAVAHI et al 1976;BIGGER and SAVAGE 1976;HENDERSON and BRUBRE 1977;OLERT and SCHMID 1978;MANDAHL 1979). Moreover, the data of YOSIDA (1978,1979) on some closely related species of Ruttus suggested a relationship between N O R variation and evolution of the species.…”

Section: Introductionmentioning

confidence: 99%

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Comparative studies on the polymorphism of nucleolus organizer regions (NORs) in four breeds of domestic pigs (Sus scrofa domestica L.) with special emphasis on the development of breeds

Czaker

Mayr

2009

Journal of Zoological Systematics and Evolutionary Research

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Comparaison biochimique des Musaraignes du genre Sorex en Europe occidentale 233 MEYLAN, A,, 1964: Le polymorphisme chromosomique de Sorex anmeus L. (Mamm.-lnsectivora). Rev. suisse Zool. 71, 903-983. -1965: Rtpartition gtographique des races chromosomiques de Sorexaraneus L. en Europe (Mamm.-Insectivora). Rev. suisse 2001. 72, 6 3 G 4 6 . MEYLAN, A , ; HAWSER, J., 1973: Les chromosomes des Sorex du groupe araneus-arcticus (Mammalia, Insectivora). Z. Saugetierkunde 38, 143-158. --1978: Le type chromosomique A des Sorex du groupe araneus: Sorex coronatus Millet 1828. Mammalia 42, 115-122. NEI, M., 1972: Genetic distance between populations. h e r . Nat. 106,283-292. NEVO, E., 1978: Genetic variation in natural populations: patterns and theory. Theor. Pop. Biol. 13, OLERT, J.; SCHMID, M., 1978: Comparative analysis of karyotypes in European shrew species. I. The sibling species Sorexaraneus and S. gemellus: Q-bands, G-bands and position of NORs. Cytogenet. Cell. Genet. 20,308-322. SELANDER, R. K.; SMITH, M. H.; YANG, S. Y.; JOHNSON, W. E.; GENTRY, J. B., 1971: Biochemical polymorphism and systematics in the genus Peromyscus.1. Variation in the oldfield mouse (Peromyscuspolionotus). Studies in Genetics VI. Univ. Texas Publ. 7103, 49-90. 12 1-1 77. SHARMAN, G. B., 1956: Chromosomes of the common shrew. Nature 177,941-942. SHAW, C. R.; PRASAD, R., 1970: Starch gel electrophoresis of enzymes -A compilation of recipes. SNEATH, P. H . A.; SOKAL, R. R., 1973: Numerical taxonomy. San Francisco: Freeman. ZIMMERMANN, E. G.; KILPATRICK, C. W.; HART, B. J., 1978: The genetics of speciation in the rodent , Biochem. Genet. 4,297-320. genus Peromyscus. Evolution 32, 565-579.

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Section: Discussionsupporting

confidence: 89%

Section: Discussionsupporting

confidence: 88%

Section: Introductionmentioning

confidence: 99%

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Comparative studies on the polymorphism of nucleolus organizer regions (NORs) in four breeds of domestic pigs (Sus scrofa domestica L.) with special emphasis on the development of breeds

Czaker

Mayr

2009

Journal of Zoological Systematics and Evolutionary Research

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“…The interest in and research on the cytogenetic characteristics of hedgehog karyotypes date back to between the late 1960s and the 1980s (7, 10, 13). These studies concentrated on identifying individual karyotype traits, mainly in the northern white-breasted hedgehog as the species inhabiting Europe (12, 13) and native species found in different territories (2, 5, 14).…”

Section: Introductionmentioning

confidence: 99%

Cytogenetic karyotype analysis in selected species of the Erinaceidae family

Grzesiakowska

Baran²,

Kuchta-Gładysz

et al. 2019

Journal of Veterinary Research

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Introduction Comparative analysis of the karyotype structure was made in two hedgehog species: the northern white-breasted hedgehog (Erinaceus roumanicus) and the African pygmy hedgehog (Atelerix albiventris). Material and Methods The cytogenetic analysis used differential staining techniques (DAPI, Ag-NOR, and C-banding/DAPI) and sequential QFQ/FISH banding with NOR20 and TEL20 probes which showed 45S rDNA and (TTAGGG)n repeat sequences, respectively, on hedgehog chromosomes. Results It was confirmed that the somatic cells of the hedgehogs have a constant number of chromosomes (2n = 48,XY). Differences were observed in the NOR number between the species. NORs were identified on three autosome pairs in the northern white-breasted hedgehog and on only two pairs in the African pygmy hedgehog. Chromosome analysis by C-banding/DAPI showed large segments of heterochromatin rich in A-T pairs on three autosome pairs in both the northern white-breasted and African pygmy hedgehogs. The heterochromatin segments encompassed large fragments of the longer arm of chromosome pairs 13, 14 and 20. The (TTAGGG)n repeat sequences on the hedgehog chromosomes were only observed in the terminal position of all the chromosomes in both species. Conclusion Our observations provide new information on the level of diversity within the Erinaceidae family.

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“…1) from Thailand are preliminary presented along with the chromosomal localizations of the nucleolar organizer regions (NORs). Several studies have demonstrated variations in the chromosomal localization of NORs, including those of vertebrates using silver staining (Ag-NOR banding technique), which provided useful information of karyotypic evolution (Volleth 1987, Ono and Obara 1994, Mandahl 1979, Winking et al 1980, Shida et al 1999. The number of Ag-NORs was influenced by the activity of rRNA transcription (Babu andVerma 1985, Ono andYoshida 1998).…”

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confidence: 99%

The First Chromosome Analysis and Localization of the Nucleolar Organizer Region of Phayre's Flying Squirrel, <i>Hylopetes phayrei</i> (Rodentia, Sciuridae) in Thailand

et al. 2014

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SummaryWe report the first chromosome analysis and localization of the nucleolar organizer region of the Phayre s flying squirrel, Hylopetes phayrei (Blyth, 1985) from Thailand. After standard peripheral blood lymphocytes had been cultured at 37 C for 96 h in the presence of colchicine, the metaphase spreads were performed on microscopic slides and air-dried. Conventional staining, GTG-banding, high-resolution and Ag-NOR staining techniques were applied to stain the chromosomes. The results showed that the diploid chromosome number of H. phayrei was 2n = 38 and the fundamental number (NF) were 76 in both males and females. The karyotype has the presence of 2 large metacentric, 8 large submetacentric, 8 large acrocentric, 6 medium acrocentric, 6 small metacentric and 6 small acrocentric chromosomes. The X chromosome is a small submetacentric chromosome and the Y chromosome is a small acrocentric chromosome. From the GTG-banding and high-resolution techniques, the numbers of bands and locations in the H. phayrei are 182 and 234, respectively; each chromosome pair could be clearly differentiated. The Ag-NOR staining demonstrated that the three pairs of nucleolar organizer regions (NORs) were observed on the long arm regions of chromosome pairs 1, 5, and 14. The karyotype formula of H. phayrei could be deduced as:2n (diploid) Flying squirrels (Petauristinae, Sciuridae, Rodentia) are members of rodents that can make gliding leaps by means of the patagium (parachute-like membrane) connected on each side to their forelegs and hind legs. They are found in North America, Europe and Asia, including at least 37 species grouped into 15 genera. Flying squirrels are special in their life history characteristics. They are nocturnal gliders and hide in holes or leaf drays during the daytime (Nowak 1991). The flying squirrel consists of six genera and 12 species in Thailand, namely, the lesser giant flying squirrel (Petaurista elegans), red giant flying squirrel (Peta. petaurista), Indian giant flying squirrel (Peta.

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Localization of nucleolar organizing regions in European hedgehogs (Insectivora, Mammalia)

Cited by 10 publications

References 38 publications

Comparative studies on the polymorphism of nucleolus organizer regions (NORs) in four breeds of domestic pigs (Sus scrofa domestica L.) with special emphasis on the development of breeds

Comparative studies on the polymorphism of nucleolus organizer regions (NORs) in four breeds of domestic pigs (Sus scrofa domestica L.) with special emphasis on the development of breeds

Cytogenetic karyotype analysis in selected species of the Erinaceidae family

The First Chromosome Analysis and Localization of the Nucleolar Organizer Region of Phayre's Flying Squirrel, <i>Hylopetes phayrei</i> (Rodentia, Sciuridae) in Thailand

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