Logo du site
  • English
  • Français
  • Se connecter
Logo du site
  • English
  • Français
  • Se connecter
  1. Accueil
  2. Université de Neuchâtel
  3. Publications
  4. Light and electron microscopy studies of the midgut and salivary glands of second and third instars of the horse stomach bot, <i>Gasterophilus intestinalis</i>
 
  • Details
Options
Vignette d'image

Light and electron microscopy studies of the midgut and salivary glands of second and third instars of the horse stomach bot, <i>Gasterophilus intestinalis</i>

Auteur(s)
Roelfstra, Lise-Lore
Editeur(s)
Vlimant, Michèle 
Institut de biologie 
Betschart, Bruno 
Institut de biologie 
Pfister, Kurt 
Institut de biologie 
Diehl, Peter A.
Date de parution
2010
In
Medical and Veterinary Entomology, Wiley, 2010/24/3/236-249
Mots-clés
  • <i>Gasterophilus inte...

  • equids

  • larvae

  • microorganisms

  • midgut

  • peritrophic matrix

  • salivary glands

Résumé
A morphological study of the midgut and salivary glands of second and third instars of <i>Gasterophilus intestinalis</i> (De Geer) (Diptera: Oestridae) was conducted by light, scanning and transmission electron microscopy. The midgut is anteriorly delimited by a proventriculus, without caeca, and is composed of posterior foregut and anterior midgut tissue from which a double-layered peritrophic matrix is produced. The midgut can be divided into anterior, median and posterior regions on the basis of the structural and physiological variations of the columnar cells which occur along its length. Two other types of cell were identified: regenerative cells scattered throughout the columnar cells, and, more rarely, endocrine cells of two structural types (closed and open). Different secretion mechanisms (merocrine, apocrine and microapocrine) occur along the midgut epithelium. Abundant microorganisms are observed in the endoperitrophic space of the anterior midgut. The origin and nature of these microorganisms remain unknown. No structural differences are observed between the second and third instar midguts. The salivary glands of <i>G. intestinalis</i> second and third instars consist of a pair of elongated tubular structures connected to efferent ducts which unite to form a single deferent duct linked dorsally to the pharynx. Several intermediate cells, without cuticle, make the junction with the salivary gland epithelium layer. Cytological characteristics of the gland epithelial cells demonstrate high cellular activity and some structural variations are noticed between the two larval stages.
URI
https://libra.unine.ch/handle/123456789/11637
DOI
10.1111/j.1365-2915.2010.00881.x
Autre version
http://dx.doi.org/10.1111/j.1365-2915.2010.00881.x
Type de publication
Resource Types::text::journal::journal article
Dossier(s) à télécharger
 main article: Roelfstra_L._-_Light_and_electron_microscopy_studies_of_the_midgut_20110623.pdf (2.58 MB)
google-scholar
Présentation du portailGuide d'utilisationStratégie Open AccessDirective Open Access La recherche à l'UniNE Open Access ORCID

Adresse:
UniNE, Service information scientifique & bibliothèques
Rue Emile-Argand 11
2000 Neuchâtel

Construit avec Logiciel DSpace-CRIS Maintenu et optimiser par 4Sciences

  • Paramètres des témoins de connexion
  • Politique de protection de la vie privée
  • Licence de l'utilisateur final