Caracterización cromosómica del pez sapo Halobatrachus didactylus (Schneider, 1801) (Teleostei: Batrachoididae) mediante hibridación in situ de fluorescencia
- M. A. Merlo
- I. Cross
- María Carmen Sarasquete Reiriz
- José L. Palazón-Fernández
- Laureana Rebordinos González
ISSN: 0074-0195
Any de publicació: 2005
Volum: 21
Número: 1-4
Pàgines: 239-246
Tipus: Article
Altres publicacions en: Boletín. Instituto Español de Oceanografía
Resum
Halobatrachus didactylus (Schneider, 1801) has a chromosome number of 2n = 46 (8 metacentrics, 12 submetacentrics and 26 acrocentrics). Specimens studied were collected from waters of the Bay of Cadiz. Chromosome preparations were made from the cephalic portion of the kidney. The telomeric probe hybridized on the terminal position of all toadfish chromosomes. (GATA)n hybridized preferentially on the subcentromeric region of only one submetacentric chromosome pair, although additional weak signals dispersed throughout the chromosomes were found. Major ribosomal genes were also located on a submetacentric pair, but at a telomeric position. Finally, the 5S rDNA probe produced a hybridization pattern similar to the GATA probe. These results provide interesting information which describes chromosomal markers that may be of utility for the management of natural populations of this species.