DNA content, karyotypes, and chromosomal location of 18S-5.8S-28S ribosomal loci in some species of bivalve molluscs from the Pacific Canadian coast

Abstract

[Abstract]: The DNA content of 10 species of bivalve molluscs from British Columbia coast was determined by image analysis, and the karyotypes of the horse clam “Tressus capax”, the bent-nose macoma “Macoma nasuta”, and the nuttall's mahogany clam “Nuttallia nuttallii” are described here for the first time. We also have analyzed the location of rDNA loci using a 28S-5.8S-18S probe in four of these species: “Mytilus californianus”, “M. trossulus”, “Macoma nasuta” and “N. nuttallii”. Results obtained report new data about cytogenetic characteristics of bivalve molluscs.