The karyotypes of Dugesia species from Spain (Turbellaria,Tricladida) |
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Authors: | Nicole Gourbault |
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Affiliation: | (1) Laboratoire des Vers, associé au C. N. R. S., Muséum national d'Histoire naturelle, 43 rue Cuvier, F 75231 Paris Cedex 05, France |
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Abstract: | Some species of Planarians, new to Spain, are recorded. Dugesia polychroa, D. sicula, D. iberica and D. gonocephala s. 1. have been investigated karyologically. The former possesses a diploid complement characteristic of the biotype A (2n = 8); the second is diploid with 2n = 18; diploidy and triploidy were found in sexual populations of D. iberica with n = 8. Triploidy occurred in all the asexual strains of the D. gonocephala group with a basic number of either 8 or 9. In this latter case B-chromosomes were occasionally found. |
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Keywords: | Turbellaria Tricladida Dugesia karyology Spain |
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