Comments on the Taxonomy of the Three-Spined Stickleback, Gasterosteus Aculeatus Linnaeus

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On the basis of 5491 specimens from 61 habitats in all parts of Poland, the author infers that the present accepted division of the three-spined stickleback into trachura, homozygote living in salt waters and coastal waters, and leiura, homozygote living in fresh continental waters, with semiarmata separated off as the hybrid of both adaptive types living in the borderline between both homozygotes, has not found confirmation in the analysed material. Members of trachura in Poland have their habitats in the whole area of this species. The semiarmata and leiura types appear in small numbers either together with, or independently of, the members of trachura, and are confined to the coastal waters of the Baltic Sea east of the mouth of the Vistula, and to the Odra and Vistula rivers not farther south than 51 degrees north latitude.


Author Institution: Department of Taxonomic Zoology, University of Lodz, Poland



The Ohio Journal of Science. v66 n1 (January, 1966), 81-87