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dc.contributor.author
Adilardi, Renzo Sebastián
dc.contributor.author
Ojanguren Affilastro, Andres Alejandro
dc.contributor.author
Mattoni, Camilo Ivan
dc.contributor.author
Mola, Liliana Maria
dc.date.available
2016-11-03T16:02:03Z
dc.date.issued
2015-04
dc.identifier.citation
Adilardi, Renzo Sebastián; Ojanguren Affilastro, Andres Alejandro; Mattoni, Camilo Ivan; Mola, Liliana Maria; Male and female meiosis in the mountain scorpion Zabius fuscus (Scorpiones, Buthidae): Heterochromatin, rDNA and TTAGG telomeric repeats; Springer; Genetica; 143; 4; 4-2015; 393-401
dc.identifier.issn
0016-6707
dc.identifier.uri
http://hdl.handle.net/11336/7936
dc.description.abstract
All cytogenetically studied scorpions present male achiasmatic meiosis and lack heteromorphic sex chromosomes. In contrast, information about female meiosis in scorpions is scarce due to the difficulty of finding meiotic cells. The genus Zabius includes three described species and no chromosome studies have been performed on it until now. We analyzed the constitutive heterochromatin distribution, NORs and telomeric sequences in mitosis and meiosis of males and females of different populations of Zabius fuscus. All specimens presented 2n=18 holokinetic chromosomes that gradually decreased in size. Male meiosis presented nine bivalents and a polymorphism for one reciprocal translocation in one population. Telomeric signals were detected at every terminal region, confirming also the presence of a (TTAGG)n motif in Buthidae. Constitutive heterochromatin was found in three chromosome pairs at a terminal region; moreover, NORs were embedded in the heterochromatic region of the largest pair. Chromosome size and landmarks allowed us to propose the chromosomes involved in the rearrangement. In four females, cells at different prophase I stages were analyzed. We describe a diffuse stage and the presence of ring-shaped bivalents. We discuss the possible origin of these bivalents in the framework of chiasmatic or achiasmatic female meiosis. These results contribute to increase the scarce evidence of female meiosis in scorpions and raise new questions about its mechanism.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Springer
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Holokinetic Chromosomes
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Achiasmatic Meiosis
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Telomere
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Fish
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Female Diffuse Stage
dc.subject.classification
Genética y Herencia
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Ciencias Biológicas
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CIENCIAS NATURALES Y EXACTAS
dc.title
Male and female meiosis in the mountain scorpion Zabius fuscus (Scorpiones, Buthidae): Heterochromatin, rDNA and TTAGG telomeric repeats
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2016-11-02T18:15:27Z
dc.journal.volume
143
dc.journal.number
4
dc.journal.pagination
393-401
dc.journal.pais
Alemania
dc.journal.ciudad
Berlin
dc.description.fil
Fil: Adilardi, Renzo Sebastián. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Fisiología, Biología Molecular y Celular; Argentina
dc.description.fil
Fil: Ojanguren Affilastro, Andres Alejandro. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales; Argentina
dc.description.fil
Fil: Mattoni, Camilo Ivan. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas, Físicas y Naturales; Argentina
dc.description.fil
Fil: Mola, Liliana Maria. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Fisiología, Biología Molecular y Celular; Argentina
dc.journal.title
Genetica
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/http://link.springer.com/article/10.1007/s10709-015-9838-1
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/http://dx.doi.org/10.1007/s10709-015-9838-1
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