Karyotype and nucleolar organizer regions in serrasalmus rhombeus (serrasalminae) from Caicara del Orinoco,Venezuela

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Auteurs
Date

2002

Type de document
Périmètre
Langue
Identifiants
Source

Interciencia

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Ce document est lié à :
http://www.redalyc.org/revista.oa

Collection

REDALYC : Red de Revistas Científicas de América Latina y el Caribe, España y Portugal

Organisation

Red de Revistas Científicas de América Latina y el Caribe, España y Portugal

Licence

Interciencia

Mots-clés Und

Multidisciplinarias (Ciencias Sociales) NOR Karyotype Serrasalmus rhombeus

Sujets proches En

Pirañas Piranha Serrasalmus Pirais Caribe Caribes (Fish)

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Alberto Granado et al., « Karyotype and nucleolar organizer regions in serrasalmus rhombeus (serrasalminae) from Caicara del Orinoco,Venezuela », Interciencia, ID : 10670/1.dc4h44

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"Cytogenetic studies were conducted on Serrasalmusrhombeus from Caicara del Orinoco, Venezuela. The diploidchromosome number 2n=60 was composed of 30 metacentric, 16submetacentric, 4 subtelocentric and 10 acrocentric chromosomes(NF= 110). Four pairs of NOR-bearing chromosomeswere detected. NOR are located terminally on the short arms of one pair of medium sized subtelocentric chromosomes, and onthree small sized acrocentric chromosome pairs. The karyotypediversity in this species suggests that karyotype formulae andNOR number could be useful for characterization of intraspecificstocks or populations."

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