Chromosomes of Theridiidae spiders (Entelegynae): interspecific karyotype diversity in Argyrodes and diploid number intraspecific variability in Nesticodes rufipes

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dc.contributor.authorStavale, Leila Miguel
dc.contributor.authorSchneider, Marielle Cristina [UNIFESP]
dc.contributor.authorAraujo, Douglas
dc.contributor.authorBrescovit, Antonio Domingos
dc.contributor.authorCella, Doralice Maria
dc.contributor.institutionUniversidade Estadual Paulista (UNESP)
dc.contributor.institutionUniversidade Federal de São Paulo (UNIFESP)
dc.contributor.institutionUniversidade Estadual de Mato Grosso do Su
dc.contributor.institutionInstituto Butantan Laboratório de Artrópodes
dc.date.accessioned2015-06-14T13:41:30Z
dc.date.available2015-06-14T13:41:30Z
dc.date.issued2010-01-01
dc.description.abstractTheridiidae is a derived family within the Araneoidea clade. In contrast to closely related groups, the 2n(male) = 20+X1X2 with acro/telocentric chromosomes is the most widespread karyotype among the theridiid spiders. In this work, the cytogenetic analysis of Argyrodes elevatus revealed original chromosome features different from those previously registered for Theridiidae, including the presence of 2n(male) = 20+X with meta/submetacentric chromosomes. Most individuals of Nesticodes rufipes showed family conserved karyotype characteristics. However, one individual had a 2n(male) = 24 due to the presence of an extra chromosome pair, which exhibited regular behavior and reductional segregation during meiosis. After silver staining, mitotic cells exhibited NORs localized on the terminal regions of the short arms of pairs 2, 3, and 4 of A. elevatus and on the terminal regions of long arms of pair 4 of N. rufipes. The comparative analysis with data from phylogenetically related species allowed the clarification of the origin of the interspecific and intraspecific chromosome variability observed in Argyrodes and in N. rufipes, respectively.en
dc.description.affiliationUniversidade Estadual Paulista Júlio de Mesquita Filho Departamento de Biologia
dc.description.affiliationUniversidade Federal de São Paulo (UNIFESP) Departamento de Ciências Biológicas
dc.description.affiliationUniversidade Estadual de Mato Grosso do Su
dc.description.affiliationInstituto Butantan Laboratório de Artrópodes
dc.description.affiliationUnifespUNIFESP, Depto. de Ciências Biológicas
dc.description.sourceSciELO
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.description.sponsorshipIDFAPESP: 06/53275-3
dc.description.sponsorshipIDFAPESP: 08/55633-0
dc.format.extent663-668
dc.identifierhttp://dx.doi.org/10.1590/S1415-47572010005000076
dc.identifier.citationGenetics and Molecular Biology. Sociedade Brasileira de Genética, v. 33, n. 4, p. 663-668, 2010.
dc.identifier.doi10.1590/S1415-47572010005000076
dc.identifier.fileS1415-47572010000400012.pdf
dc.identifier.issn1415-4757
dc.identifier.scieloS1415-47572010000400012
dc.identifier.urihttp://repositorio.unifesp.br/handle/11600/5567
dc.identifier.wosWOS:000286321000012
dc.language.isoeng
dc.publisherSociedade Brasileira de Genética
dc.relation.ispartofGenetics and Molecular Biology
dc.rightsinfo:eu-repo/semantics/openAccess
dc.subjectchromosome morphologyen
dc.subjectcytogeneticen
dc.subjectmeiosisen
dc.subjectnucleolar organizer regionen
dc.subjectsex chromosome systemen
dc.titleChromosomes of Theridiidae spiders (Entelegynae): interspecific karyotype diversity in Argyrodes and diploid number intraspecific variability in Nesticodes rufipesen
dc.typeinfo:eu-repo/semantics/article
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