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PAPESCHI AG. DNA content and heterochromatin variation in species ofBelostoma(Heteroptera, Belostomatidae). Hereditas 2014. [DOI: 10.1111/j.1601-5223.1991.tb03543.x] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022] Open
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Venkatachalapathy KN, Puttaraju* AHP. An Analysis of Chromosomes in the Uzi Fly, Blepharipa zebina Walker (Diptera: Tachinidae) Using C- and Q-banding. CYTOLOGIA 2006. [DOI: 10.1508/cytologia.71.189] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Jitpakdi A, Choochote W, Insun D, Tippawangkosol P, Keha P, Pitasawat B. Screening of ten plant species for metaphase chromosome preparation in adult mosquitoes (Diptera: Culicidae) using an inoculation technique. JOURNAL OF MEDICAL ENTOMOLOGY 1999; 36:892-895. [PMID: 10593098 DOI: 10.1093/jmedent/36.6.892] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
The screening of 10 plant species (Aloe barbadensis Mill., Asparagus officinalis L., As. plumosus Bak., As. racemosus Willd., As. sprengeri Regel, Codyline fruticosa Goppert, Dracaena loureiri Gagnep., Gloriosa superba L., Hemerocallis flava L., and Sansevieria cylindrica Bojer) for colchicine-like substance(s) using a mosquito cytogenetic assay revealed that a 1% solution of dried Gl. superba rhizome extracted in 0.85% sodium chloride solution could be used instead of a 1% colchicine in Hanks' balanced salt solution. The metaphase rates and average number of metaphase chromosomes per positive mosquito of Aedes aegypti (L.) after intrathoracic inoculation with 1% Gl. superba-extracted solution were 100% and 29.80 in females, and 90% and 25.78 in males, whereas the inoculation with 1% colchicine solution yielded 100 and 90% metaphase rates, and 20.90 and 12.22 average number of metaphase chromosomes per positive mosquito in females and males, respectively. The application of Gl. superba-extracted solution for metaphase chromosome preparation in other mosquito genera and species [e.g., Culex quinquefasciatus Say, Toxorhynchites splendens (Wiedemann), and Anopheles vagus (Döenitz)] also has yielded the satisfactory results.
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Affiliation(s)
- A Jitpakdi
- Department of Parasitology, Faculty of Medicine, Chiang Mai University, Thailand
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Abstract
The nuclear DNA amount varies threefold among species of acridid grass hoppers. DNA amount is correlated with the total chromosome volume, as measured at metaphase of mitosis. Despite the large-scale variation in DNA amount and in the total volume of chromosome material there is a striking uniformity in respect of the relative sizes of chromosomes within complements. Males from the northern race ofCryptobothrus chrysophoruscontain about 20% more nuclear DNA than males from the southern race. The DNA difference may be explained by supernumerary segments within chromosomes in the northern populations. The magnitude of the DNA variation between these races is indicative of substantial genetic divergence. It may well be that the two races merit separate specific ranking.
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Remis MI. Effects of supernumerary heterochromatin on chiasma condition in two species of Acrididae (Orthoptera). Genetica 1989. [DOI: 10.1007/bf00056065] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Suja JA, Camacho JPM, Cabrero J, Rufas JS. Analysis of a centric shift in the S11 chromosome of Aiolopus strepens (Orthoptera: Acrididae). Genetica 1986. [DOI: 10.1007/bf00122188] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Chromosomal repatterning in crocodiles: C, G and N-banding and the in situ hybridization of 18S and 26S rRNA cistrons. Genetica 1986. [DOI: 10.1007/bf00122186] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Effects of different supernumerary segments on chiasma distribution of the polymorphic species Chorthippus jucundus (Orthoptera: Acrididae). Genetica 1986. [DOI: 10.1007/bf00133521] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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C-heterochromatin polymorphism in Baetica ustulata: intraindividual variation and fluorescence banding patterns. Chromosoma 1986. [DOI: 10.1007/bf00293531] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Cabrero J, Camacho JPM. Cytogenetic studies in gomphocerine grasshoppers. I. Comparative analysis of chromosome C-banding pattern. Heredity (Edinb) 1986. [DOI: 10.1038/hdy.1986.58] [Citation(s) in RCA: 25] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
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Nucleolar organiser activity in Lolium and Festuca. 1. Lolium multiflorum, Festuca arundinacea and Lolium—Festuca Hybrids. Heredity (Edinb) 1986. [DOI: 10.1038/hdy.1986.52] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
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Pseudoterminalisation, terminalisation, and non-chiasmate modes of terminal association. Chromosoma 1985. [DOI: 10.1007/bf00328460] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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John B, King M, Schweizer D, Mendelak M. Equilocality of heterochromatin distribution and heterochromatin heterogeneity in acridid grasshoppers. Chromosoma 1985; 91:185-200. [PMID: 3979177 DOI: 10.1007/bf00328216] [Citation(s) in RCA: 75] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Comparative fluorescence studies on the chromosome of ten species of acridid grasshoppers, with varying amounts and locations of C-band positive heterochromatin, indicate that the only regions to fluoresce differentially are those that C-band. Within a given species there is a marked tendency for groups of chromosomes to accumulate heterochromatin with similar fluorescence behaviour at similar sites. This applies to all three major categories of heterochromatin - centric, interstitial and telomeric. Different sites within the same complement, however, tend to have different fluorescence properties. In particular, centric C-bands within a given species are regularly distinguishable in their behaviour from telomeric C-bands. Different species on the other hand, may show distinct forms of differential fluorescence at equilocal sites. These varying patterns of heterochromatin heterogeneity, both within and between species, indicate that whatever determines the differential response to fluorochromes has tended to operate both on an equilocal basis and in a concerted fashion. This is reinforced by the fact that structural rearrangements that lead to the relocation of centric C-bands, either within or between species, may also be accompanied by a change in fluorescence behaviour.
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Camacho JPM, Viseras E, Navas J, Cabrero J. C-Heterochromatin content of supernumerary chromosome segments of grasshoppers: Detection of an euchromatic extra segment. Heredity (Edinb) 1984. [DOI: 10.1038/hdy.1984.72] [Citation(s) in RCA: 46] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
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Halfer C. Further evidence of intraspecific heterochromatin variants in Drosophila melanogaster. Genetica 1983. [DOI: 10.1007/bf00123223] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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C-heterochromatin polymorphism and variation in chiasma localization in Euchorthippus pulvinatus gallicus (Acrididae, Orthoptera). Chromosoma 1982. [DOI: 10.1007/bf00327346] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Extra heterochromatin in natural populations of Gomphocerus sibiricus (Orthoptera: Acrididae). Genetica 1981. [DOI: 10.1007/bf00057560] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Sved JA, Verlin D. Similarity of centromeric heterochromatin in strains of drosophila melanogaster which interact to produce hybrid dysgenesis. Chromosoma 1980; 78:353-63. [PMID: 6156061 DOI: 10.1007/bf00327393] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
Many long-established laboratory strains of D. melanogaster interact with recently-collected wild-type strains, so that the progeny show sterility, enhanced mutation, male recombination and other degenerative traits, a syndrome known collectively as "hybrid dysgenesis". Tests have been made for differences in centromeric heterochromatin between interacting strains, by comparing homologues in mitotic preparations from hybrid individuals. Differences between homologues have not been revealed, either qualitatively by C-banding or quantitatively by in situ hybridisation to RNA transcripts from satellites 1.705 and 1.686. However, the sensitivities of the techniques are such that quantitative differences of less than 50% between strains could escape detection.
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Bedo DG. C, Q and H-banding in the analysis of Y chromosome rearrangements in Lucilia cuprina (Wiedemann) (Diptera: Calliphoridae). Chromosoma 1980; 77:299-308. [PMID: 7189455 DOI: 10.1007/bf00286055] [Citation(s) in RCA: 23] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
In Lucilia cuprina C-banding produces procentric bands on all autosomes and deep staining over most of the X and Y chromosomes which conciderably facilitates the analysis of complex Y chromosome rearrangements. The Y chromosome is generally darkly C-banded throughout while in the X chromosome a pale staining segment is found in the distal portion of the long arm. Modulation of the banding reaction results in 'grey' areas in both X and Y. When C-banding is compared with allocycly it is clear that not all heteropycnotic regions in the sex chromosomes C-band to the same extent. Secondary constrictions in the short arms of both X and Y chromosomes are clearly revealed by C-banding, the X satellite being polymorphic for size.--Q-banding results in a brightly fluorescing band in the short arm of structurally normal Y chromosomes. This band loses its fluorescence in some translocations, probably through a position effect. Hoechst 33258 staining does not produce any brightly fluorescing bands.
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Bonaccorsi S, Santini G, Gatti M, Pimpinelli S, Colluzzi M. Intraspecific polymorphism of sex chromosome heterochromatin in two species of the Anopheles gambiae complex. Chromosoma 1980; 76:57-64. [PMID: 7358009 DOI: 10.1007/bf00292226] [Citation(s) in RCA: 22] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
The Hoechst 33258 banding pattern of the mitotic chromosomes of several laboratory and natural populations of the sibling species A. gambiae and A. arabiensis has been analyzed. A clear intraspecific polymorphism of sex chromosome heterochromatin has been observed. Nevertheless in each species heterochromatic variations fall within a characteristic species-specific pattern. Moreover, while laboratory polulations tend to be monomorphic for a given heterchromatic variant, natural populations exhibit a high degree of intrapopulation polymorphism. The possible role of sex chromosome heterochromatin in controlling fertility and mating behaviour of Anopheles mosquitoes is discussed.
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Yamamoto M. Cytological studies of heterochromatin function in the Drosophila melanogaster male: autosomal meiotic paring. Chromosoma 1979; 72:293-328. [PMID: 111905 DOI: 10.1007/bf00331091] [Citation(s) in RCA: 48] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
In Drosophila melanogaster it is now documented that the different satellite DNA sequences make up the majority of the centromeric heterochromatin of all chromosomes. The most popular hypothesis on this class of DNA is that satellite DNA itself is important to the pairing processes of chromosomes. Evidence in support of such a hypothesis is, however, circumstantial. This hypothesis has been evaluated by direct cytological examination of the meiotic behaviour of heterochromatically and/or euchromatically rear-ranged autosomes in the male. It was found that neither substantial deletions nor rearrangements of the autosomal heterochromatin cause any disruption of meiotic pairing. Autosomal pairing depends on homologs retaining sufficient euchromatic homology. This is the first clear demonstration that the highly repeated satellite DNA sequences in the heterochromatin of the second, third and fourth chromosomes are not important in meiotic pairing, but rather than some euchromatic homology in the autosome is essential to ensure a regular meiotic process. These results on the autosomes, when taken in conjunction with our previous studies on sex chromosome pairing, clearly indicate that satellite DNA is not crucial for male meiotic chromosome pairing of any member of the D. melanogaster genome.
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Dallai R. Polytene chromosomes of someBilobella aurantiaca(Collembola) Italian populations. ACTA ACUST UNITED AC 1979. [DOI: 10.1080/11250007909440304] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Webb GC, White MJD, Contreras N, Cheney J. Cytogenetics of the parthenogenetic grasshopper Warramaba (formerly Moraba) virgo and its bisexual relatives. Chromosoma 1978. [DOI: 10.1007/bf00285964] [Citation(s) in RCA: 35] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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