Abstract
The structure of the spermatozeugmata of different tubificid species belonging to the subfamilies Tubificinae, Limnodriloidinae and Phallodrilinae was compared to the one of Tubifex tubifex. It was concluded that the spermatozeugmata of Tubificoides and Clitellio (Tubificinae) were very similar to the Tubifex ones in having a parallel arrangement of the central fertilizing sperm surrounded by a cortex made of packed atypical spermatozoa. On the contrary, Kaketio ineri and Marcusaedrilus tuber (Limnodriloidinae) and Bathydrilus formosus (Phallodrilinae) show an organization typical for each species but different from that of Tubifex mainly in lacking a double sperm line. A more comprehensive definition of the spermatozeugmata is proposed and more attention to the morphology of the sperm bundles when describing new oligochaete species is suggested, since it is possible to use this information for taxonomic and phylogenetic purposes.
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© 1989 Kluwer Academic Publishers
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Ferraguti, M., Grassi, G., Erséus, C. (1989). Different models of tubificid spermatozeugmata. In: Kaster, J.L. (eds) Aquatic Oligochaete Biology. Developments in Hydrobiology, vol 51. Springer, Dordrecht. https://doi.org/10.1007/978-94-009-2393-5_8
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DOI: https://doi.org/10.1007/978-94-009-2393-5_8
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