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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Gourbault, N. The karyotypes of Dugesia species from Spain (Turbellaria, Tricladida). Hydrobiologia 84, 45–52 (1981). https://doi.org/10.1007/BF00026162
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DOI: https://doi.org/10.1007/BF00026162