title: Chromosomes of Gymnothorax funebris and the karyotypical differentiation within Gymnothorax (Anguilliformes: Muraenidae).
abstract: Cytogenetic studies in Gymnothorax funebris revealed a diploid chromosome number 2n = 42 (6 metacentrics, 4 submetacentrics, and 32 acrocentrics, FN = 52). The results obtained are novel and similar to those previously described for species belonging to Muraenidae family. The conventional karyotype is also novel and divergent from other species of the genus Gymnothorax, where a higher proportion of metacentric chromosomes predominate. The data are reported and discussed considering the cytotaxonomy of the genus. These results strongly support the current view that chromosomal alterations such as centric fusion and Robertsonian's translocations have an important role in the evolution of this group.
authors.affiliation: Laboratório de Citogenética e Evolução de Plantas, Departamento de Biologia, Centro de Ciências, Universidade Federal do Ceará, Fortaleza, CE, Brasil.
authors.forename: M A O
authors.initials: MA
authors.lastname: Alves
authors.affiliation: Laboratório de Citogenética e Evolução de Plantas, Departamento de Biologia, Centro de Ciências, Universidade Federal do Ceará, Fortaleza, CE, Brasil.
authors.forename: J E
authors.initials: JE
authors.lastname: Monteiro-Junior
authors.affiliation: Laboratório de Citogenética e Evolução de Plantas, Departamento de Biologia, Centro de Ciências, Universidade Federal do Ceará, Fortaleza, CE, Brasil.
authors.forename: C A M
authors.initials: CA
authors.lastname: Oliveira
authors.affiliation: Laboratório de Citogenética e Evolução de Plantas, Departamento de Biologia, Centro de Ciências, Universidade Federal do Ceará, Fortaleza, CE, Brasil.
authors.forename: R M
authors.initials: RM
authors.lastname: Silveira
authors.affiliation: Laboratório de Citogenética e Evolução de Plantas, Departamento de Biologia, Centro de Ciências, Universidade Federal do Ceará, Fortaleza, CE, Brasil itayguara@ufc.br.
authors.forename: I R
authors.initials: IR
authors.lastname: Costa
authors.affiliation: Instituto de Ciências do Mar (LABOMAR), Universidade Federal do Ceará, Campus do Pici Prof. Prisco Bezerra, Fortaleza, CE, Brasil.
authors.forename: R
authors.initials: R
authors.lastname: Maggioni
mesh_terms: D000818:Animals; D002869:Chromosome Aberrations; D002875:Chromosomes; D004171:Diploidy; D004524:Eels / Q000145:classification / Q000235:genetics*; D019143:Evolution, Molecular; D049810:Genetic Speciation; D007621:Karyotyping; D010802:Phylogeny