Chromosomal mapping of rRNA genes core histone genes and telomeric sequences in Brachidontes puniceus and Brachidontes rodriguezi (Bivalvia Mytilidae)

摘要

BackgroundChromosome rearrangements are an important part of the speciation process in many taxa. The study of chromosome evolution in bivalves is hampered by the absence of clear chromosomal banding patterns and the similarity in both chromosome size and morphology. For this reason, obtaining good chromosome markers is essential for reliable karyotypic comparisons. To begin this task, the chromosomes of the mussels Brachidontes puniceus and B. rodriguezi were studied by means of fluorochrome staining and fluorescent in situ hybridization (FISH).