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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, meer In: Dumont, H.J. (Ed.) Developments in Hydrobiology. Kluwer Academic/Springer: The Hague; London; Boston; Dordrecht. ISSN 0167-8418, meer Is gerelateerd aan: 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, meer

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Documenttype: Congresbijdrage

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Trefwoorden

Biogeny > Phylogeny Biological phenomena > Evolution Cells > Sexual cells > Sperm Ultrastructure Hirudinea [WoRMS]; Naididae Ehrenberg, 1831 [WoRMS]; Oligochaeta [WoRMS]; Tubificidae d'Udekem, 1855 [WoRMS] Zoet water

Author keywords

Naididae; Lumbriculidae; ultrastructure; spermatozoa; phylogeny;Oligochaeta

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Auteurs		Top
Ferraguti, M. Erséus, C., meer Kaygorodova, I. Martin, P., meer

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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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