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New sperm types in Naididae and Lumbriculidae (Annelida: Oligochaeta) and their possible phylogenetic implications
Ferraguti, M.; Erséus, C.; Kaygorodova, I.; Martin, P. (1999). New sperm types in Naididae and Lumbriculidae (Annelida: Oligochaeta) and their possible phylogenetic implications, in: Healy, B.M. et al. Aquatic Oligochaetes: Proceedings of the 7th International Symposium on Aquatic Oligochaetes held in Presque Isle, Maine, USA, 18-22 August 1997. Developments in Hydrobiology, 139: pp. 213-222. https://dx.doi.org/10.1007/978-94-011-4207-6_21
In: Healy, B.M.; Reynoldson, T.B.; Coates, K.A. (Ed.) (1999). Aquatic Oligochaetes: Proceedings of the 7th International Symposium on Aquatic Oligochaetes held in Presque Isle, Maine, USA, 18-22 August 1997. Reprinted from Hydrobiologia, vol. 406. Developments in Hydrobiology, 139. Springer Science+Business Media: Dordrecht. ISBN 978-94-010-5829-2; e-ISBN 978-94-011-4207-6. XIV, 290 pp. https://dx.doi.org/10.1007/978-94-011-4207-6, more
In: Dumont, H.J. (Ed.) Developments in Hydrobiology. Kluwer Academic/Springer: The Hague; London; Boston; Dordrecht. ISSN 0167-8418, more
Related to:
Ferraguti, M.; Erséus, C.; Kaygorodova, I.; Martin, P. (1999). New sperm types in Naididae and Lumbriculidae (Annelida: Oligochaeta) and their possible phylogenetic implications. Hydrobiologia 406: 213-222. https://dx.doi.org/10.1023/A:1003708906089, more

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Document type: Conference paper

Keywords
    Biogeny > Phylogeny
    Biological phenomena > Evolution
    Cells > Sexual cells > Sperm
    Ultrastructure
    Hirudinea [WoRMS]; Naididae Ehrenberg, 1831 [WoRMS]; Oligochaeta [WoRMS]; Tubificidae d'Udekem, 1855 [WoRMS]
    Fresh water
Author keywords
    Naididae; Lumbriculidae; ultrastructure; spermatozoa; phylogeny;Oligochaeta

Authors  Top 
  • Ferraguti, M.
  • Erséus, C., more
  • Kaygorodova, I.
  • Martin, P., more

Abstract
    The sperm ultrastructure of three Naididae (Paranais frici, P. litoralis and Stylaria lacustris) and two Lumbriculidae (Rhynchelmis brachycephala and R. alyonae) is decribed to supply spermatological evidence towards a better understanding of the phylogeny of the two families. Naidid spermatozoa were found to be similar to one another, particularly with regard to the acrosome (with the acrosome tube bent to one side), and the shape and number of mitochondria. The various morphological characters do not militate against the previously proposed inclusion of naidids within the Tubificidae. The two lumbriculid species examined showed a characteristic conical indentation at the apex of the nucleus, a feature up to now described only in Branchiobdellida, an annelid group with possible affinities to Lumbriculidae.

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