Chromidotilapia guntheri guntheri (Sauvage, 1882)

Ozouf-Costaz, Catherine, Coutanceau, Jean-Pierre, Bonillo, Céline, Mercot, Hervé, Fermon, Yves & Guidi-Rontani, Chantal, 2017, New insights into the chromosomal differentiation patterns among cichlids from Africa and Madagascar, Cybium 41 (1), pp. 35-43 : 38

Chromidotilapia guntheri guntheri (Sauvage, 1882)

The karyotype of C. guntheri guntheri is composed of 2n = 48 acrocentric chromosomes of slowly decreasing size, except the first pair, which is much larger. The most remark- able characteristic of C. guntheri guntheri karyotype is the exclusive presence of st/t chromosome pairs, (FN = 48). The 18S rRNA genes are located on the terminal region of short arms of one acrocentric pair, the second one of the size series ( Fig. 2 ).

Figures

Figure 2. – Karyotypes of Malagasy and African cichlids after conventional fluorescence in situ hybridization coun- terstained with DAPI (blue). m/sm pairs are separated on the first line of each karyotype. The 18S rRNA probed chromosomes are shown (red). Scale bar = 5 µm.