{"id":484,"date":"2018-10-12T06:02:46","date_gmt":"2018-10-12T09:02:46","guid":{"rendered":"https:\/\/lageevo.crp.ufv.br\/?p=484"},"modified":"2018-10-12T06:02:46","modified_gmt":"2018-10-12T09:02:46","slug":"studies-in-two-allopatric-populations-of-hypostomus-affinis","status":"publish","type":"post","link":"https:\/\/lageevo.crp.ufv.br\/?p=484","title":{"rendered":"[:pb]Studies in two allopatric populations of Hypostomus affinis[:en]Studies in two allopatric populations of\u00a0Hypostomus\u00a0affinis[:]"},"content":{"rendered":"

Studies in two allopatric populations of\u00a0Hypostomus\u00a0<\/span>affinis<\/span><\/span><\/em>\u00a0(Steindachner, 1877): the role of mapping the ribosomal genes to understand the chromosome evolution of the group<\/strong><\/p>\n

Karina de Oliveira\u00a0Brand\u00e3o<\/span>,\u00a0Dina\u00edza Abadia\u00a0Rocha-Reis<\/span>,\u00a0Caroline\u00a0Garcia<\/span>,\u00a0Rubens\u00a0Pazza<\/span>,\u00a0Lurdes Foresti deAlmeida-Toledo<\/span>,\u00a0Karine Frehner\u00a0Kavalco<\/span><\/p>\n

Several cytogenetic markers show chromosomal diversity in the fish such as \u201carmoured catfish\u201d. Although studies have characterized many species in the major genera representing these\u00a0Siluridae<\/span><\/span>, particularly in the genus\u00a0Hypostomus<\/span><\/span><\/i>\u00a0Lac\u00e9p\u00e8de, 1803, trends in chromosome evolution of this group remain unclear. The Para\u00edba do Sul river basin contains the armoured catfish\u00a0Hypostomus<\/span>\u00a0affinis<\/span><\/span><\/i>\u00a0Steindachner, 1877, which is unique because of its distribution of repetitive DNAs, the 5S and\u00a018S rDNA<\/abbr>. Identified samples and registered collections in Brazilian museums were identified as the same typological species, while we observed wide variations in the physical location of this gene in the karyotype based on fluorescent in situ hybridization results. In this study, we propose that these species can represent evolutionarily independent units, as these fish frequently undergo processes such as dispersion and vicariance and that the rDNA is associated with DNA that spreads in the genome, such as transposons. Additionally, the absence of gene flow due to the distance of the sample location could intensify evolutionary processes. The phenotypes found for the\u00a018S rDNA<\/abbr>\u00a0showed minor changes in relation to the number of sites between the lower and upper drainage regions of Para\u00edba do Sul. The large difference in the number of sites found for the\u00a05S rDNA<\/abbr>\u00a0entered the same region (upper drainage of the basin) and the literature data could represent a population dynamics where an expansion of the\u00a05S rDNA<\/abbr>\u00a0sites provides an extinct or non-sampled cytotype in this work.<\/p>\n

Comparative Cytogenetics<\/strong><\/em><\/p>\n

https:\/\/doi.org\/10.3897\/CompCytogen.v12i1.22052<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

Studies in two allopatric populations of\u00a0Hypostomus\u00a0affinis\u00a0(Steindachner, 1877): the role of mapping the ribosomal genes to understand the chromosome evolution of the group Karina de Oliveira\u00a0Brand\u00e3o,\u00a0Dina\u00edza Abadia\u00a0Rocha-Reis,\u00a0Caroline\u00a0Garcia,\u00a0Rubens\u00a0Pazza,\u00a0Lurdes Foresti deAlmeida-Toledo,\u00a0Karine Frehner\u00a0Kavalco Several cytogenetic markers show chromosomal diversity in the fish such as \u201carmoured catfish\u201d. Although studies have characterized many species in the major genera representing these\u00a0Siluridae, particularly […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[39],"tags":[8,43,10,36,42,41,40],"class_list":["post-484","post","type-post","status-publish","format-standard","hentry","category-publicacoes","tag-cascudos","tag-chromosomes","tag-citogenetica","tag-cromossomos","tag-cytogenetics","tag-genetica-ecologica","tag-hypostomus"],"_links":{"self":[{"href":"https:\/\/lageevo.crp.ufv.br\/index.php?rest_route=\/wp\/v2\/posts\/484","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/lageevo.crp.ufv.br\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/lageevo.crp.ufv.br\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/lageevo.crp.ufv.br\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/lageevo.crp.ufv.br\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=484"}],"version-history":[{"count":1,"href":"https:\/\/lageevo.crp.ufv.br\/index.php?rest_route=\/wp\/v2\/posts\/484\/revisions"}],"predecessor-version":[{"id":485,"href":"https:\/\/lageevo.crp.ufv.br\/index.php?rest_route=\/wp\/v2\/posts\/484\/revisions\/485"}],"wp:attachment":[{"href":"https:\/\/lageevo.crp.ufv.br\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=484"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/lageevo.crp.ufv.br\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=484"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/lageevo.crp.ufv.br\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=484"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}