Nom du corpus

Corpus Systématique Animale

Titre du document

The fine structure of spermiogenesis in the Amblypygi and the Uropygi (Arachnida)

Lien vers le document
Éditeur
Springer (journals)
Langue(s) du document
Anglais
Type de document
Research-article
Nom du fichier dans la ressource
Arthropodes_v2b_01919
Auteur(s)
  • åse Jespersen
Affiliation(s)
  • Institute of Comparative Anatomy, Universitetsparken 15, DK-2100, Copenhagen Ø, Denmark
Résumé

Spermiogenesis in one species from each of the arachnid groups Amblypygi and Uropygi is described by electron microscopy: The whip spider,Tarantula marginemaculata (Amblypygi), and the whip-scorpion,Mastigoproctus giganteus, (Uropygi). In both species the earliest spermatid has a spherical nucleus and soon acquires an anterior acrosome and a posterior flagellar tail. The flagellun is peculiar in having a 9 + 3 axonemal pattern. By the mid-spermatid stage, the nucleus becomes conspicuously elongated, possibly through the agency of a manchette of microtubules. In the late spermatid, the elongated nucleus begins to coil posteriorly; simultaneously the middle piece and the tail flagellum begin to retract into the cell body to form a coiled intracellular axonema. Membranous profiles appear in the peripheral cytoplasm, possibly to accommodate a decrease in the total area of plasma membrane. The mature sperm is a spherical cell, which includes the following organelles in twisted and fully coiled configuration: an elongated nucleus, an acrosome and an acrosomal filament, a long middle piece with helically arranged mitochondria and an intracellular axonema.

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 - Animal Science and Zoology
  • 1 - Health Sciences ; 2 - Medicine ; 3 - Anatomy
Identifiant ISTEX
3D649FEE8DFC419EAA85450C7FE09DA93C614A50
Revue

Zoomorphologie

Année de publication
1978
Présence de XML structuré
Non
Version PDF
1.3
Score qualité du texte
6.794
Sous-corpus
  • Arthropodes
Type de publication
Journal
ark:/67375/1BB-8G4GP305-7
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