caa a22 4500 469056835 CHVBK 20180323132846.0 cr unu---uuuuu 170328e19920301xx s 000 0 eng 10.1007/BF03002965 doi (NATIONALLICENCE)springer-10.1007/BF03002965 Location of nucleolus organizer regions (NORs) in karyotypes of three sibling species of Tisbe of the gracilis group (Copepoda, Harpacticoida) [Elektronische Daten] [Angelo Libertini, Ivana Lazzaretto, B. Battaglia] Localizzazione delle regioni degli organizzatori nucleolari (NORs) nel cariotipo di tre specie gemelle di Tisbe appartenenti al gruppo «gracilis» (Copepoda, Harpacticoida) A karyotypical analysis carried out on three sibling species of thegracilis group of the genusTisbe showed that all species possess three NORs. In each species these regions exhibit a peculiar location which suggests that the reduction of chromosome number, by progressive Robertsonian fusion, from2n = 22 (Tisbe cucumariae) to2n= 16 (T.biminiensis) or2n = 10 (T.gracilis), involved the chromosomes carrying NORs without modifying the NORs number. Accademia nazionale dei Lincei, 1992 Copepoda nationallicence Karyology nationallicence NORs nationallicence Libertini Angelo CNR - Istituto di Biologia del Mare, Riva Sette Martiri, 1364/A - 30122, Venezia aut Lazzaretto Ivana Dipartimento di Biologia, Université degli Studi di Padova, Via Trieste, 75-35121, Padova aut Battaglia B. aut Rendiconti Lincei Springer-Verlag 3/1(1992-03-01), 67-73 1120-6349 3:1<67 1992 3 12210 https://doi.org/10.1007/BF03002965 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF03002965 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Libertini Angelo CNR - Istituto di Biologia del Mare, Riva Sette Martiri, 1364/A - 30122, Venezia aut NATIONALLICENCE 700 1- Lazzaretto Ivana Dipartimento di Biologia, Université degli Studi di Padova, Via Trieste, 75-35121, Padova aut NATIONALLICENCE 700 1- Battaglia B. aut NATIONALLICENCE 773 0- Rendiconti Lincei Springer-Verlag 3/1(1992-03-01), 67-73 1120-6349 3:1<67 1992 3 12210 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer