Cytogenetics of the land snails Cantareus aspersus and C. mazzullii (Mollusca : Gastropoda : Pulmonata) (Articolo in rivista)

Type
Label
  • Cytogenetics of the land snails Cantareus aspersus and C. mazzullii (Mollusca : Gastropoda : Pulmonata) (Articolo in rivista) (literal)
Anno
  • 2005-01-01T00:00:00+01:00 (literal)
Alternative label
  • Vitturi R. (1), Libertini A. (2), Sineo L. (1), Sparacio I. (1), Lannino A. (1), Gregorini A. (3), Colomba M. (4) (2005)
    Cytogenetics of the land snails Cantareus aspersus and C. mazzullii (Mollusca : Gastropoda : Pulmonata)
    in Micron (1993)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Vitturi R. (1), Libertini A. (2), Sineo L. (1), Sparacio I. (1), Lannino A. (1), Gregorini A. (3), Colomba M. (4) (literal)
Pagina inizio
  • 351 (literal)
Pagina fine
  • 357 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 36 (literal)
Rivista
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • (1) Dipartimento di Biologia Animale, Università di Palermo, Via Archirafi 18, 90123 Palermo, Italy; (2) Istituto di Scienze Marine, CNR, Riva 7 Martiri 1364/a, 30122 Venezia, Italy; (3) Istituto di Psicologia, Università di Urbino “Carlo Bo”, Via Zeppi, 61029 Urbino (PU), Italy; (4) Istituto di Ecologia e Biologia Ambientale, Università di Urbino “Carlo Bo”, Via Sasso 75, 61029 Urbino (PU), Italy (literal)
Titolo
  • Cytogenetics of the land snails Cantareus aspersus and C. mazzullii (Mollusca : Gastropoda : Pulmonata) (literal)
Abstract
  • A cytogenetic study was carried out on the chromosomes and nuclear DNA contents of the land snails Cantareus aspersus and C. mazzullii (Gastropoda: Pulmonata). Chromosomes were studied using Giemsa staining, banding methods and fluorescent in situ hybridization (FISH) with three repetitive DNA probes [18S rDNA, (GATA)n and (TTAGGG)n]. Results were very similar in the two species both showing (1) 54 bi-armed chromosomes [submetacentrics (SM) + metacentrics (M) + subtelocentrics (ST)]; (2) 10 terminal NORs after sequential application of rDNA FISH and silver staining; (3) uniform DNA fluorescence with CMA3 and DAPI staining and (4) genomic composition considerably enriched both in highly- and moderately-repeated DNAs. The telomeric (TTAGGG)n sequence hybridized with the termini of all of the chromosomes in the two species. In spite of their apparent karyological uniformity, flow cytometry DNA assays showed that C. aspersus and C. mazzullii are characterized by different nuclear DNA content (C values are 3.58 and 3.08 pg, respectively) and slightly different base composition in their genomes. Present data on GS and AT% in C. mazzullii and C. aspersus confirm the trend toward high GS values and GC percentages among land snails. (literal)
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