Please use this identifier to cite or link to this item: http://www.alice.cnptia.embrapa.br/alice/handle/doc/944459
Research center of Embrapa/Collection: Embrapa Pesca e Aquicultura - Artigo em periódico indexado (ALICE)
Date Issued: 2012
Type of Material: Artigo em periódico indexado (ALICE)
Authors: ALVES, A. L.
BORBA, R. S. de
POZZOBON, A. P.
OLIVEIRA, C.
NIRCHIO, M.
FORESTI, F.
Additional Information: ANDERSON LUIS ALVES, CNPASA; RAFAEL SPLENDORE DE BORBA, UNESP Rio Claro-SP; ALLAN PIERRE POZZOBON, UNESP Rio Claro-SP; CLAUDIO OLIVEIRA, UNESP Botucatu-SP; MAURO NIRCHIO, UNIVERSIDAD DE ORIENTE, Venezuela; FAUSTO FORESTI, UNESP Botucatu-SP.
Title: Localization of 18S ribosomal genes in suckermouth armoured catfishes Loricariidae (Teleostei, Siluriformes) with discussion on the Ag-NOR evolution.
Publisher: Comparative Cytogenetics, Sofia, v. 6, n. 3, p. 315-321, 2012.
Language: en
Description: The family Loricariidae with about 690 species divided into six subfamilies, is one of the world?s largest fish families. Cytogenetic studies conducted in the family showed that among 90 species analyzed the diploid number ranges from 2n=38 in Ancistrus sp. to 2n=96 in Hemipsilichthys gobio Luetken, 1874. In the present study, fluorescence in situ hybridization (FISH) was employed to determine the chromosomal localization of the 18S rDNA gene in four suckermouth armoured catfishes: Kronichthys lacerta (Nichols, 1919), Pareiorhaphis splendens (Bizerril, 1995), Liposarcus multiradiatus (Hancock, 1828) and Hypostomus prope plecostomus (Linnaeus, 1758). All species analyzed showed one chromosome pair with 18S rDNA sequences, as observed in the previous Ag-NORs analyses. The presence of size and numerical polymorphism was observed and discussed, with proposing a hypothesis of the Ag-NOR evolution in Loricariidae.
Thesagro: Peixe
Citogenética
NAL Thesaurus: Fish
Cytogenetics
Fluorescence in situ hybridization
Loricariidae.
Data Created: 2013-01-08
Appears in Collections:Artigo em periódico indexado (CNPASA)

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