Drafts by Mario Enrico zunino
A short reflexion about the Mexican Institute of Ecology, its history and its scientific and acad... more A short reflexion about the Mexican Institute of Ecology, its history and its scientific and academic achievements is provided, as well as some personal remarks about the importance for scientists to know not just the work of their precursors, but also of the institutions where they were trained and have worked
Papers by Mario Enrico zunino
Abstract The aim of this book is to collate a series of recent contributions from different field... more Abstract The aim of this book is to collate a series of recent contributions from different fields into one work where Coleoptera represent the connecting element. The 21 contributions are grouped under the following headings: taxonomy, phylogeny and evolution; cytogenetics; ...
Interciencia Revista De Ciencia Y Tecnologia De America, Jul 1, 2007
Micron, 2006
An unexpected result arising from a previous characterization of the scarab beetle Bubas bison (C... more An unexpected result arising from a previous characterization of the scarab beetle Bubas bison (Coleoptera: Scarabaeidae) heterochromatin was its unusual homogeneous reaction to different staining methods. In particular, silver stainability of heterochromatic ends of all chromosomes prevented identification of the number of rDNA transcriptionally active regions. Data formerly obtained using silver impregnation (Ag-NOR), C- G- and DAPI banding are here improved and completed by application of CMA3 staining and rDNA FISH with the aim to investigate heterochromatin base composition and locate rDNA regions with respect to NOR-associated heterochromatin. Our results show that B. bison has a high amount of heterochromatin (almost 50%) and that - as revealed by rDNA FISH - major rRNA genes are spread over the heterochromatic telomeric regions of eight chromosomes, thus suggesting that only a portion, although consistent, of total heterochromatin is associated with ribosomal clusters. Moreover, DAPI-positive (AT-specific) and CMA3-negative (GC-specific) reactions of heterochromatic DNA confirm its AT-rich composition. Finally, possible explanations for the bright DAPI-fluorescence of both heterochromatin and rDNA sequences are discussed.
Boletin De La Sociedad Entomologica Aragonesa, Jun 1, 2010
Interciencia Revista De Ciencia Y Tecnologia De America, 2012
Acta Zoologica Mexicana, 2005
Boletin De La Sociedad Entomologica Aragonesa, Oct 31, 2006
Revue suisse de zoologie., 1979
Memorie Della Societa Entomologica Italiana, Jun 30, 2010
Interciencia, Jul 1, 2007
Fragmenta Entomologica, 2008
Journal of Heredity, 2000
Abstract Conventional staining, differential banding, and in situ hybridization with both ribosom... more Abstract Conventional staining, differential banding, and in situ hybridization with both ribosomal and telomeric probes to mitotic chromosomes of Gymnopleurus sturmi (Scarabaeoidea: Scarabaeidae) are described. The karyotype is distinguished by a ...
Memorie della Società Entomologica Italiana, 2008
Chromosome research : an international journal on the molecular, supramolecular and evolutionary aspects of chromosome biology, 1999
Mitotic metaphase chromosomes of the scarab beetle Thorectes intermedius (Costa) (Coleoptera Scar... more Mitotic metaphase chromosomes of the scarab beetle Thorectes intermedius (Costa) (Coleoptera Scarabaeoidea: Geotrupidae) were analyzed using various banding methods and fluorescent in-situ hybridization (FISH) with a ribosomal probe. The results obtained indicate that silver and CMA3 staining are unable to localize the chromosome sites of nucleolar organizer regions (NORs). Such an inadequacy is a consequence of the extensive silver and CMA3 stainability of both constitutive heterochromatin and heterochromatin associated to the NORs.
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Drafts by Mario Enrico zunino
Papers by Mario Enrico zunino