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Caracterización cariotípica en mitosis y meiosis del robalo blanco Centropomus undecimalis (Pisces Centropomidae)

Arias Rodríguez, Lenin | Indy, Jeane R [autor/a] | Ahumada Hernández, Rosa I [autor/a] | Barragán Cupido, Helen [autor/a] | Ávalos Lázaro, Antonieta A [autor/a] | Páramo Delgadillo, Salomón [autor/a].
Tipo de material: Artículo impreso(a) y electrónico Artículo impreso(a) y electrónico Otro título: Karyotypic characterization in mitosis and meiosis of the common snook Centropomus undecimalis (Pisces: Centropomidae) [Título paralelo].Tema(s): Centropomus undecimalis | Análisis citogenéticoDescriptor(es) geográficos: Laguna Mecoacán (Tabasco, México) Nota de acceso: Acceso en línea sin restricciones En: Revista de Biología Tropical. volumen 59, número 2 (junio 2011), páginas 683-692. --ISSN: 0034-7744Número de sistema: 50624Resumen:
Inglés

The common snook Centropomus undecimalis inhabits marine, brackish and freshwater habitats in the Western Central Atlantic Ocean, including the Gulf of Mexico. Common snook is an economically important fish in many localities, nevertheless the number of studies on its biology and genetics are still few. The present study attempts to establish the cytogenetic profiles of the specimens collected in Paraiso Municipality Tabasco, Mexico. Tissue of five females and eight male organisms were processed by conventional cytological techniques to obtain chromosome slides of high quality in order to assemble the karyotype. The results from the kidney tissue analysis showed that 85.1% of 288 mitosis had a 2n=48 chromosomes, and 52.8% of 104 meiosis exhibited the haploid number 1n=24. The diploid karyotype showed 48 monoarmed chromosomes of the telocentric (T) type. There was no chromosome heteromorphism between females and males. The diploid karyotype was very similar to that observed in the majority of marine fishes.

Recurso en línea: http://www.ots.ac.cr/tropiweb/attachments/volumes/vol59-2/12-Arias-Caracterizacion.pdf
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Acceso en línea sin restricciones

The common snook Centropomus undecimalis inhabits marine, brackish and freshwater habitats in the Western Central Atlantic Ocean, including the Gulf of Mexico. Common snook is an economically important fish in many localities, nevertheless the number of studies on its biology and genetics are still few. The present study attempts to establish the cytogenetic profiles of the specimens collected in Paraiso Municipality Tabasco, Mexico. Tissue of five females and eight male organisms were processed by conventional cytological techniques to obtain chromosome slides of high quality in order to assemble the karyotype. The results from the kidney tissue analysis showed that 85.1% of 288 mitosis had a 2n=48 chromosomes, and 52.8% of 104 meiosis exhibited the haploid number 1n=24. The diploid karyotype showed 48 monoarmed chromosomes of the telocentric (T) type. There was no chromosome heteromorphism between females and males. The diploid karyotype was very similar to that observed in the majority of marine fishes. eng

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