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KARYOLOGICAL DATA ON SOME SPECIES OF THE GENUS CURA (TRICLADIDA, PALUDICOLA)

1975; NRC Research Press; Volume: 17; Issue: 3 Linguagem: Inglês

10.1139/g75-046

0008-4093

N. Gourbault, Mario Benazzi,

Marine Biology and Ecology Research

For the North American species Cura foremanii, the authors confirm a diploid complement of 12 chromosomes, and give a detailed description of the karyotype which is characterized by the presence of one long metacentric and five more or less subtelocentric chromosomes. A population of the Australian species C. pinguis possesses 36 metacentric chromosomes that are easy to assemble in six groups of six elements each. This suggests a hexaploid condition as do the karyometric results. Meiosis is normal in both germ lines and the development appears to be amphimictic.