PMID- 15004477 OWN - NLM STAT- MEDLINE DCOM- 20040528 LR - 20171101 IS - 1424-859X (Electronic) IS - 1424-8581 (Linking) VI - 103 IP - 1-2 DP - 2003 TI - Chromosome banding and molecular cytogenetic study of two Mediterranean trachinoid fish species (Teleostei: Trachinidae, Uranoscopidae). PG - 139-43 AB - The chromosomes of Echiichthys vipera (Trachinidae) and Uranoscopus scaber (Uranoscopidae) were analyzed by means of various banding methods and fluorescence in situ hybridization (FISH) with telomeric and major rDNA probes, respectively. The karyotype of E. vipera was composed of 48 acrocentric chromosomes and NOR sites, as revealed by all detection methods, were situated pericentromerically on a single pair of middle-sized chromosomes. Blocks of constitutive heterochromatin were present in the pericentromeric regions of all pairs of chromosomes. The karyotype of U. scaber showed three karyomorphs: 2n = 30 (18 m + 12 a/st [m = metacentric, a = acrocentric and st = subtelocentric]), 2n = 28 (20 m + 8 a/st), 2n = 27 (21 m + 6 a/st). NORs, as revealed by FISH, were situated pericentromerically on a single pair of middle-sized chromosomes in spite of Ag-positive signals in the centromeres of all pairs of chromosomes. Robertsonian fusions were hypothesized for observed variation due to invariable number of chromosome arms FN = 48. CI - Copyright 2003 S. Karger AG, Basel FAU - Caputo, V AU - Caputo V AD - Istituto di Biologia e Genetica, Universita Politecnica delle Marche, Ancona, Italy. vcaputo@unian.it FAU - Colomba, M AU - Colomba M FAU - Nisi Cerioni, P AU - Nisi Cerioni P FAU - Vitturi, R AU - Vitturi R FAU - Giovannotti, M AU - Giovannotti M FAU - Olmo, E AU - Olmo E LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - Switzerland TA - Cytogenet Genome Res JT - Cytogenetic and genome research JID - 101142708 RN - 0 (Heterochromatin) SB - IM MH - Animals MH - Chromosome Banding MH - *Chromosomes/ultrastructure MH - Cytogenetic Analysis MH - Heterochromatin/classification MH - In Situ Hybridization, Fluorescence MH - Karyotyping MH - Mediterranean Sea MH - Metaphase MH - Nucleolus Organizer Region MH - Perciformes/*genetics EDAT- 2004/03/09 05:00 MHDA- 2004/05/29 05:00 CRDT- 2004/03/09 05:00 PHST- 2003/05/22 00:00 [received] PHST- 2003/07/03 00:00 [accepted] PHST- 2004/03/09 05:00 [pubmed] PHST- 2004/05/29 05:00 [medline] PHST- 2004/03/09 05:00 [entrez] AID - 76302 [pii] AID - 10.1159/000076302 [doi] PST - ppublish SO - Cytogenet Genome Res. 2003;103(1-2):139-43. doi: 10.1159/000076302.