NDLI: Análisis citogenético en Salminus brasiliensis (Pisces, Characidae) del Río Paraná, Corrientes, Argentina

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Análisis citogenético en Salminus brasiliensis (Pisces, Characidae) del Río Paraná, Corrientes, Argentina

Content Provider	Semantic Scholar
Author	Caramello, Constanza Sanchez, Sophie Jorge, Lilian Cristina
Copyright Year	2014
Abstract	La especie Salminus brasiliensis es conocida vulgarmente con el nombre de “dorado”. Se caracteriza por tener una amplia distribucion en America del Sur. Los ejemplares de la poblacion del Rio Parana se caracterizan por presentar un numero diploide de 50 cromosomas. La formula cariotipica esta constituida por 5 pares de cromosomas metacentricos, 10 pares submetacentricos y 10 pares subtelo- acrocentricos, con un numero fundamental de 80 en ambos sexos. No se observaron heteromorfismos cromosomicos relacionados con el sexo. La impregnacion con nitrato de plata permitio observar la ocurrencia de NORs simples, localizadas en el brazo largo del par numero 6. El bandeo C revelo una gran cantidad de bloques de heterocromatina, presentes en la mayoria de los cromosomas, preferentemente situados en regiones centromericas y pericentromericas. El cariotipo de S. brasiliensis del Parana Medio, Argentina, muestra con relacion a individuos de la misma especie pertenecientes a las cuencas del Alto Parana y San Francisco (Brasil), una notable similitud, evidenciando la ocurrencia de una estructura cariotipica muy conservada.
Starting Page	64
Ending Page	66
Page Count	3
File Format	PDF HTM / HTML
Volume Number	25
Alternate Webpage(s)	http://www.scielo.org.ar/pdf/revet/v25n1/v25n1a14.pdf
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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