6533b7d7fe1ef96bd1267a3c

RESEARCH PRODUCT

Characterization of mitotic chromosomes of four species of the genus Diplodus: Karyotypes and chromosomal nucleolar organizer region phenotypes

Gianluca SaràRoberto VitturiA. LibertiniMariastella ColombaAntonio Mazzola

subject

Settore BIO/07 - EcologiabiologyEcologyChromosomeKaryotypebanded chromosomeDiplodusAquatic Sciencebiology.organism_classificationNucleolar Organizer RegionIntraspecific competitionkaryologyGenusEvolutionary biologyDiploduNucleolus organizer regionSparidaeEcology Evolution Behavior and SystematicsSargus

description

Karyotypes have been described in four Mediterranean species of the genus Diplodus (Teleostei, Sparidae), D. vulgaris, D. puntazzo, D. sargus and D. annularis. Chromosomes were mainly acrocentric in all but D. vulgaris, where certain chromosome pairs were subtelocentric. A remarkable intraspecific heteromorphism in the number of NOR-bearing chromosomes along with a substantial interspecific variability in position of chromosomal Ag signals have been encountered. The presumed origin of multiple NOR-bearing chromosomes in Diplodus species and variation of the NOR location is discussed. ? 1996 The Fisheries Society of the British Isles

yearjournalcountryeditionlanguage
1996-12-01
10.1006/jfbi.1996.0241http://hdl.handle.net/10447/194474