A cytogenetical study on Economidichthys pygmaeus Holly, 1929 (Pisces, Gobiidae), an endemic freshwater goby from Western Greece

作者：Rampin Massimiliano^*; Gkenas Christos; Malavasi Stefano; Libertini Angelo

来源：Comparative Cytogenetics, 2011, 5(5): 391-396.

DOI：10.3897/CompCytogen.v5i5.2015

• Goby fish
• karyotype
• fluorescent in situ hybridization
• genome size

A cytogenetic study was carried out on the chromosomes and the nuclear DNA content of the freshwater goby Economidichthys pygmaeus (Pisces, Gobiidae). The species is characterized by a 2n=46 karyotype consisting of 12 submetacentric and 11 subtelocentric chromosome pairs (NF=70). Major (45S) rDNA genes are terminal-centromeric located on the short arm of a single medium-small sized submetacentric pair as assessed by in situ hybridization, CMA(3) staining, and Ag-NOR banding. The haploid (C-value) nuclear DNA content is 0.93 +/- 0.003 picograms. The cytogenetical data of E. pygmaeus were compared with those ones already available for other related gobies.

• 出版日期2011