PL EN


Preferences help
enabled [disable] Abstract
Number of results
Journal
2004 | 52 | 3-4 | 165-169
Article title

Banding chromosome pattern of two species of pimelodus(Siluriformes, Pimelodidae) from the Parana River basin of Brazil

Title variants
Languages of publication
EN
Abstracts
EN
Cytogenetic studies were carried out on seven specimens of Pimelodus heraldoi and sixteen specimens of Pimelodus sp., both from the Parana River basin. The two species had the same diploid number of 56 chromosomes: P. heraldoi with 22M+22SM+6ST+6A and FN of 106 and Pimelodus sp. with 24M+26SM+4ST+2A and FN of 110. NORs were found at the terminal position of the long arm of one pair of ST chromosomes. C-banding (CB) showed in the two species heterochromatin distributed in various chromosomes of the complement, mainly in telomeric regions and in a pair of metacentric chromosomes with strong heterochromatic staining in both telomeres. Treatment only with the fluorochrome CMA3 confirmed in Pimelodus heraldoi and Pimelodus sp. the nucleolar chromosome pair and showed other fluorescent bands. Combined treatment with CB+CMA3 enhanced fluorescent staining of chromosomes in the two fish species evidencing several bands, including in P. heraldoi a chromosome pair showing fluorescent staining in both telomeres.
Publisher

Journal
Year
Volume
52
Issue
3-4
Pages
165-169
Physical description
Contributors
References
Document Type
ARTICLE
Publication order reference
Lenice de Souza, Dept., Biol. Geral, CCB, CEP86051-970, Londrina, PR, Brazil
Identifiers
YADDA identifier
bwmeta1.element.element-from-psjc-c0eafbb5-9c1e-3b1d-b44c-db020138f596
JavaScript is turned off in your web browser. Turn it on to take full advantage of this site, then refresh the page.