Evolutionary chromosomal differentiation among four species of Conoderus Eschscholtz, 1829 (Coleoptera, Elateridae, Agrypninae, Conoderini) detected by standard staining, C-banding, silver nitrate impregnation, and CMA(3)/DA/DAPI staining

dc.contributorUniversidade Estadual Paulista (UNESP)
dc.creatorSchneider, Marielle Cristina
dc.creatorAlmeida, Mara Cristina
dc.creatorRosa, Simone Policena
dc.creatorCosta, Cleide
dc.creatorCella, Doralice Maria
dc.date2014-05-20T15:21:06Z
dc.date2016-10-25T17:54:23Z
dc.date2014-05-20T15:21:06Z
dc.date2016-10-25T17:54:23Z
dc.date2006-09-01
dc.date.accessioned2017-04-05T23:29:25Z
dc.date.available2017-04-05T23:29:25Z
dc.identifierGenetica. Dordrecht: Springer, v. 128, n. 1-3, p. 333-346, 2006.
dc.identifier0016-6707
dc.identifierhttp://hdl.handle.net/11449/32279
dc.identifierhttp://acervodigital.unesp.br/handle/11449/32279
dc.identifier10.1007/s10709-006-7101-5
dc.identifierWOS:000241139800029
dc.identifierhttp://dx.doi.org/10.1007/s10709-006-7101-5
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/876652
dc.descriptionThe speciose Brazilian Elateridae fauna is characterized by high karyotypic diversity, including one species (Chalcolepidius zonatus Eschscholtz, 1829) with the lowest diploid number within any Coleoptera order. Cytogenetic analysis of Conoderus dimidiatus Germar, 1839, C. scalaris (Germar, 1824,) C. ternarius Germar, 1839, and C. stigmosus Germar, 1839 by standard and differential staining was performed with the aim of establishing mechanisms of karyotypic differentiation in these species. Conoderus dimidiatus, C. scalaris, and C. ternarius have diploid numbers of 2n(male) = 17 and 2n(female) = 18, and a X0/XX sex determination system, similar to that encountered in the majority of Conoderini species. The karyotype of C. stigmosus was characterized by a diploid number of 2n=16 and a neoXY/neoXX sex determination system that was highly differentiated from other species of the genus. Some features of the mitotic and meiotic chromosomes suggest an autosome/ancestral X chromosome fusion as the cause of the neoXY system origin in C. stigmosus. C-banding and silver impregnation techniques showed that the four Conoderus species possess similar chromosomal characteristics to those registered in most Polyphaga species, including pericentromeric C band and autosomal NORs. Triple staining techniques including CMA(3)/DA/DAPI also provided useful information for differentiating these Conoderus species. These techniques revealed unique GC-rich heterochromatin associated with NORs in C. scalaris and C. stigmosus and CMA(3)-heteromorphism in C. scalaris and C. ternarius.
dc.languageeng
dc.publisherSpringer
dc.relationGenetica
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.subjectbivalent
dc.subjectchiasma
dc.subjectkaryotype
dc.subjectfluorochrome
dc.subjectheteromorphism
dc.subjectmeiosis
dc.subjectNORs
dc.subjectsecondary constriction
dc.subjectsex determination system
dc.subjectsynapse
dc.titleEvolutionary chromosomal differentiation among four species of Conoderus Eschscholtz, 1829 (Coleoptera, Elateridae, Agrypninae, Conoderini) detected by standard staining, C-banding, silver nitrate impregnation, and CMA(3)/DA/DAPI staining
dc.typeOtro


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