Chromosomal Characterization of Prochilodus lineatus from Parana River, Corrientes, Argentina. I. B Chromosomes and NOR Banding

Autor:	Orlando Moreira Filho, Sebastián Sánchez, Lilian C Jorge
Rok vydání:	2011
Předmět:	B chromosome biology Ecology Zoology Cell Biology Plant Science Ribosomal RNA biology.organism_classification Prochilodus Genus Parana river Genetics Prochilodus lineatus Fish Animal Science and Zoology 18s rdna
Zdroj:	CYTOLOGIA. 76:219-222
ISSN:	1348-7019 0011-4545
DOI:	10.1508/cytologia.76.219
Popis:	The fish of the genus Prochilodus, commonly known as sabalo, are of great economic and ecological importance. Different species of this genus are widely distributed throughout all the basins of South America. Cytogenetic analysis performed on specimens of Prochilodus lineatus from Puerto Abras (Parana River, Argentina), revealed the occurrence of 54 chromosomes of meta-submetacentric type, together with the presence of small supernumerary chromosomes with intra and interindividual variations. The use of the 18S rDNA probe confirmed the results obtained with Ag-NORs, identifying the presence of a metacentric chromosome pair with ribosomal cistrons in interstitial position in the long arm. Through both of these techniques are noted differences in the size of the nucleolar regions, this variation is probably related to the occurrence of events of duplication and/or deletion.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::1cfc559e2009cf00822b740aef431040 https://doi.org/10.1508/cytologia.76.219 Zobrazit plný text záznamu