Conventional karyotype and nucleolar organizer regions of the toadfish Halobatrachus didactylus (Schneider, 1801) (Pisces: Batrachoididae)
DOI:
https://doi.org/10.3989/scimar.2003.67n4445Keywords:
karyotype, NOR, cytogenetic, toadfish, Halobatrachus didactylusAbstract
For this report, we studied the conventional karyotype and the NOR-bearing chromosomes in the toadfish Halobatrachus didactylus. We found a karyotype of 46 chromosomes made up of 8 metacentric, 12 submetacentric, and 26 acrocentric elements (FN = 66). No heteromorphic sex chromosomes were observed in the species. Metacentric chromosomes were easily classified as homologous pairs according to their morphology and L/S ratio. The rest of the chromosomes could not be accurately classified as homologous pairs because differences in chromosome size and L/S ratio were too slight between adjacent pairs within a size-ranged series. A single pair of NOR-bearing chromosomes was found. Active NORs were terminally located in a submetacentric pair of chromosomes.
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Published
2003-12-30
How to Cite
1.
Palazón JL, Nirchio M, Sarasquete C. Conventional karyotype and nucleolar organizer regions of the toadfish Halobatrachus didactylus (Schneider, 1801) (Pisces: Batrachoididae). Sci. mar. [Internet]. 2003Dec.30 [cited 2024Mar.29];67(4):445-9. Available from: https://scientiamarina.revistas.csic.es/index.php/scientiamarina/article/view/507
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