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A phylogenetic analysis of Tubificinae and Limnodriloidinae (Annelida, Clitellata, Tubificidae) using sperm and somatic characters by Roberto Marotta; Marco Ferraguti; Christer Erséus is a Environmental Science article available to read on EtoBox.

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Marotta, R., Ferraguti, M. & Erséus, C. (2003). A phylogenetic analysis of Tubificinae and Limnodriloidinae (Annelida, Clitellata, Tubificidae) using sperm and somatic characters. —__Zoologica Scripta__, __32__, 255–278. The spermatozoa and the sperm aggregates of 13 species belonging to four genera (__Smithsonidrilus, Limnodriloides, Thalassodrilides, Doliodrilus__) in the tubificid subfamily Limnodriloidinae (Annelida, Oligochaeta) were studied and compared with the spermatozoal patterns already described in the subfamily Tubificinae. Two characters considered exclusive for the Tubificinae were found in the more spermatologically variable Limnodriloidinae: the production of two kinds of spermatozoa, eusperm and parasperm, and the presence, in the spermathecae, of sperm aggregates formed by a combination of the two sperm types. A parsimony analysis was performed on the spermatozoal data of the species examined and compared with that based on the somatic characters of the same species: a critical revision of the already codified eusperm characters was carried out and the ultrastructure of parasperm was used as a new subset of spermatozoal characters. In a total evidence approach, a

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Author

Roberto Marotta; Marco Ferraguti; Christer Erséus

Publisher

John Wiley and Sons; Wiley (Blackwell Publishing); Blackwell Publishing Inc.; Wiley (ISSN 0300-3256)

Published

2003

Language

EN

Field

Environmental Science (Physical Sciences)