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Systematic Parasitology

, Volume 19, Issue 3, pp 215–229 | Cite as

Systematic implications of male caudal morphology in ascaridoid nematode parasites

  • Hans Peter Fagerholm
Article

Abstract

In view of earlier results, suggesting a considerable stability in the number and distribution patterns of caudal papillae and papillae-like structures in the male of some ascaridoid species, these features are analysed more generally within the superfamily Ascaridoidea. They include the single pair of phasmids on the tail, four pairs of distal papillae some of which are considered in some cases to occur anterior to the level of the cloaca, two pairs of paracloacal papillae, a median papilla or plaque, and numerous pairs of proximal papillae some of which may be situated posterior to the level of the cloaca. The exceptions to this general pattern and the systematic and phylogenetic significance of caudal morphology are discussed.

Keywords

Distribution Pattern General Pattern Early Result Phylogenetic Significance Nematode Parasite 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Kluwer Academic Publishers 1991

Authors and Affiliations

  • Hans Peter Fagerholm
    • 1
    • 2
  1. 1.Institute of ParasitologyAbo AkademiÅboFinland
  2. 2.Department of Pathology, Parasitological LaboratoryNational Veterinary InstituteHelsinkiFinland

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