Abstract
Pycnogaster cucullata (Charp.) is a polytypic species of Tettigonioidea having both X0 and neo XY populations. Moreover the neo XY populations are themselves of two distinct types referred to as neo XY1 and neo XY2.
A comparison between the X0 state and the two different neo XY systems, using C-banding and silver staining techniques, has served to clarify the differentiation of the two neo XY systems. In both cases, a centric fusion between the progenitor M2 chromosome, the second largest autosome, and the X of the X0 form has been accompanied by loss of an active NOR in the neo Y, which is the direct derivative of the M2. In both categories of neo XY sex bivalents, a secondary construction appears in the distal region of the XL limb, which gives a silver reaction similar to that observed at the centromeres. The neo XY2 system is distinctive in two respects in comparison with the neo XY1. In the first place it has an additional C-positive block located distally in the neo Y. Additionally there is also a novel C-block in the proximal half of the XR limb of the neo X. The neo XY2 system thus provides the first unambiguous example of the “secondary heterochromatinization” of a sex chromosome system within a single species.
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Bloom, S E, and Goodpasture, C. 1976. An improved technique for selective silver staining of nucleolar organizer regions in human chromosomes. Hum Genet, 34, 199–206.
Buys, C H C M, and Osinga, J. 1980. Abundance of protein bound sulfhydryl and disulfide groups at chromosomal nucleolus organizing regions. Chromosoma (Berl.), 77, 1–11.
Buys, C H C M, Osinga, J, and Anders, G J P A. 1979. Age-dependence variability of ribosomal RNA-gene activity in man as determined from frequencies of silver staining nucleolus organizing regions on metaphase chromosomes of lymphocytes and fibroblasts. Mech Age Dev, 11, 55–75.
Cardoso, H, and Dutra, A. 1979. The neo X neo Y sex pair in Acrididae, its structure and association. Chromosoma (Berl.), 70, 323–336.
Diaz, M O, and Saez, F A. 1968. DNA synthesis in the neo X neo Y sex determining system of Dichroplus bergi. Chromosoma (Berl.), 24, 10–16.
Engel, W, Zenes, M T, and Schmid, M. 1977. Activation of mouse ribosomal RNA genes at the 2-cell stage. Hum Gen, 38, 57–63.
Fernandez-Piqueras, J, Rodriguez Campos, A, Sentis Castaño, C, and Wandosell Jurado, F. 1982. Pycnogaster cucullata (Carp.) a polytypic species of Tettigonioidea with X0 and neo XY sex chromosomes. Heredity, 48 (1), 147–150.
Goodpasture, C, and Bloom, S E. 1975. Visualization of nucleolus organizer regions in mammalian chromosomes using silver stain. Chromosoma (Berl.), 53, 37–50.
Grossman, A I, Short, R B, and Cain, G C. 1981. Karyotype evolution and sex chromosome differentiation in Schistosomes (Trematoda, Schistosomatidae). Chromosoma (Berl.), 84, 413–430.
Hansmann, I, Gebauer, J, Bihl, L, and Grimm, T. 1978. On set of nucleolus organizer activity in early mouse embryogenesis and evidence for its regulation. Exp Cell Res, 144, 263–268.
Hewitt, G M. 1979. Grasshoppers and Crickets Animal Cytogenetics. Vol. 3, Insecta 1, Orthoptera. Gebrüder Borntraeger, Berlin-Stuttgart.
Höfgartner, F J, Schmid, M, Krone, W, Zenzes, M T, and Engel, W. 1979. Patterns of activity of nucleolus organizers during spermatogenesis in mammals as analysed by silver staining. Chromosoma (Berl.), 71, 197–216.
Howell, W M, and Hsu, T C. 1979. Chromosome core structure revealed by silver staining. Chromosoma (Berl.), 73, 61–66.
Hsu, T C. 1971. Heterochromatin pattern in metaphase chromosomes of Drosophila melanogaster. J Hered, 62, 285–287.
Jalal, S M, Clark, R W, Hsu, T C, and Pathak, S. 1974. Cytological differentiation of constitutive heterochromatin. Chromosoma (Berl.), 48, 391–403.
John, B. 1976. Myths and mechanisms of meiosis. Chromosoma (Berl.), 54, 295–325.
John, B, and King, M. 1977. Heterochromatin variation in Cryptobothrus chrysophorus I. Chromosome differentiation in natural populations. Chromosoma (Berl.), 64, 219–236.
John, B, and King, M. 1980. Heterochromatin variation in Cryptobothrus chrysophorus III. Synthetic hybrids. Chromosoma (Berl.), 78, 165–186.
King, M. 1980. C-banding studies on the Australian hylid frogs: secondary constriction structure and the concept of euchromatin transformation. Chromosoma (Berl.), 80, 191–217.
Mengden, G A. 1981. Linear differentiation of the C-band pattern of the W chromosomes in snakes and birds. Chromosoma (Berl.), 83, 275–287.
Ray-Chaudhuri, S P, Singh, L, and Sharma, T. 1971. Evolution of sex chromosomes and formation of W chromatin in snakes. Chromosoma (Berl.), 33, 239–251.
Ryttman, H, Tgelstrom, H, and Jansson, H. 1979. G and C-banding in four related Larus species (Aves). Hereditas (Lund.), 91, 143–148.
Saez, F A. 1963. Gradient of the heterochromatinization in the evolution of the sexual system neo X neo Y. Port Acta Biol A, 7, 111–138.
Schmid, M, Höfgartner, F J, Zenzes, M T, and Engel, W. 1977. Evidence for post-meiotic expression of ribosomal RNA genes during male gametogenesis. Hum Genet, 38, 279–284.
Schmid, M, Olert, J, and Klett, C. 1979. Chromosome banding in Amphibia. III. Sex chromosomes in Triturus. Chromosoma (Berl.), 71, 29–55.
Singh, L, Purdom, L F, and Jones, R W. 1980. Sex chromosome associated satellite DNA: evolution and conservation. Chromosoma (Berl.), 79, 137–157.
Stock, A D, Arrighi, F E, and Stefos, K. 1974. Chromosome homology in birds; banding patterns of the chromosomes of the domestic chicken ring-necked dove and domestic pidgeon. Cytogenet Cell Genet, 13, 419–428.
Sumner, A T. 1972. A simple technique for demonstrating centromeric heterochromatin. Ex Cell Res, 75, 304–306.
Vistorin, G, Gamperl, R, and Rosenkranz, W. 1977. Studies on sex chromosomes of four hamster species: Cricetus cricetus, Cricetulus griseus, Mesocricetus auratus and Phodopus sungorus. Cytogenet Cell Genet, 18, 24–32.
White, M J D. 1973. Animal cytology and evolution. 3rd edit. Cambridge University Press.
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Fernandez-Piqueras, J., Campos, A., Castaño, C. et al. Sex chromosome evolution in the polytypic species Pycnogaster cucullata. Heredity 50, 217–223 (1983). https://doi.org/10.1038/hdy.1983.25
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DOI: https://doi.org/10.1038/hdy.1983.25
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