Nom du corpus

Corpus Systématique Animale

Titre du document

Old and new data on Seisonidea (Rotifera)

Lien vers le document
Éditeur
Springer (journals)
Langue(s) du document
Anglais
Type de document
Research-article
Mots-clés d'auteur
  • Biology
  • geographical distribution
  • morphology
  • phylogeny
  • Rotifera
  • Seison
  • Seisonidea
Nom du fichier dans la ressource
Arthropodes_v2b_01150
Auteur(s)
  • Claudia Ricci 1
  • Giulio Melone 2
  • Cristina Sotgia 2
Affiliation(s)
  • 1) Department of Animal Biology, University of Torino, Via Accademia Albertina 17, 10123, Torino, Italy
  • 2) Department of Biology, University of Milan, Via Celoria 26, 20133, Milano, Italy
Résumé

Class Seisonidea consists of one marine genus, Seison, with two species (S. nebaliae and S. annulatus) which are epizoic on the crustacean Nebalia. Seisonidea are the only rotifers whose reproduction is strictly bisexual. They also possess the unusual feature of having well-developed males. In this paper we review the literature concerning biogeographical distribution, relationships with their host, and morphology, and present new information obtained with SEM and optical microscopy of both living animals and serial sections. Some seisonid characters, such as the paired retrocerebral organ, nervous system, and trophi, suggest that they hold a primitive position within phylum Rotifera. However, they do share features with other rotifers: paired gonads and an unusual locomotory behavior with Bdelloidea; lateral antennae, cellular stomach wall, arrangement of intracytoplasmic lamina, and other characters with Monogononta. Some features are peculiar to Seison: obligatory amphimixis, endolecythal eggs, encysted spermatozoa, unique mastax, and absence of copulatory organ in males and of vitellaria in females. Reduction of the corona and absence of resistant stages in Seisonidea may be related to their habitat and to their life style. We propose a closer relationship of Seisonidea to Monogononta than previously asserted.

Catégories Science-Metrix
  • 1 - natural sciences
  • 2 - biology
  • 3 - marine biology & hydrobiology
Catégories INIST
  • 1 - sciences appliquees, technologies et medecines
  • 2 - sciences biologiques et medicales
  • 3 - sciences biologiques fondamentales et appliquees. psychologie
  • 4 - invertebres
Catégories Scopus
  • 1 - Life Sciences ; 2 - Agricultural and Biological Sciences ; 3 - Aquatic Science
Catégories WoS
  • 1 - science ; 2 - marine & freshwater biology
Identifiant ISTEX
E0CD6C8D93181973D7DC10AB967315896D01CE5A
Revue

Hydrobiologia

Année de publication
1993
Présence de XML structuré
Non
Version PDF
1.3
Score qualité du texte
9.292
Sous-corpus
  • Arthropodes
Type de publication
Journal
ark:/67375/1BB-KGD96Q0P-R
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