Publication Abstract

Chromosomes of the marine polychaete, Ophryotrocha diatema

Di, Shaojie and J.F. Knowles

A karyotypic analysis of the polychaete Ophryotrocha diadema has been carried out for the first time, using conventional Giemsa staining and G-banding techniques. The diploid chromosome numbers was B (2n = 8) and the total number of chromosome arms 16 (AN = 16), with all chromosomes being relatively large and metacentric. The fourth pair of chromosomes was a marker pair, readily identifiable by a clear gap located close to the centromere. Analysis of G-banding patterns revealed dark bands in the metacentric region of all 4 chromosome pairs, with further thin banding on the chromosome arms.

Reference:

Di, Shaojie and J.F. Knowles, 1992. Chromosomes of the marine polychaete, Ophryotrocha diatema. Ophelia, 36(3): 195-201.