Comparative Cytogenetics of Seven Ctenidae Species (Araneae)

dc.contributor.authorAraujo, Douglas
dc.contributor.authorOliveira, Edson Gabriel de [UNESP]
dc.contributor.authorGiroti, Andre Marsola
dc.contributor.authorMattos, Viviane Fagundes [UNESP]
dc.contributor.authorPaula-Neto, Emygdio [UNESP]
dc.contributor.authorBrescovit, Antonio Domingos
dc.contributor.authorSchneider, Marielle Cristina
dc.contributor.authorCella, Doralice Maria [UNESP]
dc.contributor.institutionUniversidade Federal de Mato Grosso do Sul (UFMS)
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionInstituto Butantan
dc.contributor.institutionUniversidade Federal de São Paulo (UNIFESP)
dc.description.abstractThe present study elevates the number of cytogenetically analyzed ctenid species and genera from two to eight and six, respectively, presenting comparisons between chromosomal data obtained and the phylogenetic hypothesis proposed in the literature. Six ctenid species presented 13 autosomal pairs, exhibiting either X(1)X(2)0 (Ctenus ornatus, Ctenus sp., Parabatinga brevipes and Phoneutria nigriventer) or X(1)X(2)X(3)0 sex chromosome systems (Nothroctenus sp. and Viracucha andicola). Asthenoctenus borellii showed 2n male = 20 + X(1)X(2)0. In all species, the chromosomes were telocentric. Some cells of one C. ornatus specimen exhibited one extra chromosome that, considering the behavioral similarities between the two chromosomes, can be considered to be supernumerary, derived from or giving rise to a sex chromosome. Silver impregnation revealed nucleolar organizer regions on one autosomal pair of C. ornatus and P. nigriventer (Cteninae) and two pairs of V. andicola (Acanthocteninae). Chromosomal data suggests that the X(1)X(2)X(3)0 system arose several times in the evolution of entelegyne spiders, and that conversion of an X(1)X(2)0 system into an X(1)X(2)X(3)0 system and vice-versa has been a relatively common event in spiders. All the chromosomal data corroborate the close relationship between Ctenus and Phoneutria, the placement of P. brevipes within Cteninae, the placement of Anahita in a separated branch within Cteninae, and the inclusion of A. borellii in a distinct group within the ctenids (Viridasiinae), all of which are as proposed by phylogenetic hypotheses available in the literature.en
dc.description.affiliationUniv Fed Mato Grosso do Sul, UFMS, Setor Biol Geral, Ctr Ciencias Biol & Saude, BR-79070900 Campo Grande, MS, Brazil
dc.description.affiliationUniv Estadual Paulista, UNESP, Inst Biociencias, Dept Biol, BR-13506900 Sao Paulo, Brazil
dc.description.affiliationInst Butantan, Lab Especial Colecoes Zool, BR-05503900 Sao Paulo, Brazil
dc.description.affiliationUniv Fed Sao Paulo, UNIFESP, Dept Ciencias Biol, BR-09972270 Sao Paulo, Brazil
dc.description.affiliationUnespUniv Estadual Paulista, UNESP, Inst Biociencias, Dept Biol, BR-13506900 Sao Paulo, Brazil
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.sponsorshipCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.description.sponsorshipInstituto Brasileiro do Meio Ambiente e dos Recursos Renovaveis - IBAMA
dc.description.sponsorshipInstituto Chico Mendes de Conservacao da Biodiversidade (ICMBio)
dc.description.sponsorshipIdFAPESP: 10/14193-7
dc.description.sponsorshipIdCNPq: DA 471821-2008
dc.description.sponsorshipIdInstituto Chico Mendes de Conservacao da Biodiversidade (ICMBio)15157-1
dc.identifier.citationZoological Science. Tokyo: Zoological Soc Japan, v. 31, n. 2, p. 83-88, 2014.
dc.publisherZoological Soc Japan
dc.relation.ispartofZoological Science
dc.rights.accessRightsAcesso restrito
dc.sourceWeb of Science
dc.subjectdiploid numberen
dc.subjectnucleolar organizer regionen
dc.subjectsex chromosome systemen
dc.subjectGST cladeen
dc.titleComparative Cytogenetics of Seven Ctenidae Species (Araneae)en
dcterms.rightsHolderZoological Soc Japan[6][1]
unesp.campusUniversidade Estadual Paulista (Unesp), Instituto de Biociências, Rio Claropt