Why Williamson’s (2014) theory of hybridogenesis fails to explain the evolution of the Rhizocephala

In: Crustaceana
H. Glenner 1Marine Biodiversity, Biological Institute, University of Bergen, Thormøhlensgate 33A, N-5020 Bergen, Norway
2Center for Macroecology and Evolution, University of Copenhagen, Universitetsparken 15, DK-2100 Copenhagen, Denmark

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J. Lützen 3Marine Biological Section, Biological Department, University of Copenhagen, Universitetsparken 4, DK-2100 Copenhagen, Denmark

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All available biological, ultrastructural, and molecular data support the conclusion that the cirripedian suborders, Rhizocephala and Thoracica, are closely related. Williamson’s speculations (Williamson, D. I., . The origin of barnacles (Thecostraca, Cirripedia). Crustaceana, 87: 755-765) that the so-called hybridogenesis can explain how Rhizocephala evolved, rest on a selective choice of other authors’ data and an ignorance of solid facts derived from decades of comparative anatomical and molecular studies.

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