An ultrastructural study of the distal epidermis and the occurrence of subcuticular bacteria in the gutless tubificid phallodrilus albidus (Oligochaeta: Annelida)

K.S.Richards K.S.RichardsK. SylviaK.S.Richards K.RichardsK. Sylviahttps://api.elsevier.com/content/author/author_id/7202474185 (1982) An ultrastructural study of the distal epidermis and the occurrence of subcuticular bacteria in the gutless tubificid phallodrilus albidus (Oligochaeta: Annelida). Australian Journal of Zoology, 30 2: 159-168. doi:10.1071/ZO9820327


Author K.S.Richards K.S.RichardsK. SylviaK.S.Richards K.RichardsK. Sylviahttps://api.elsevier.com/content/author/author_id/7202474185
Title An ultrastructural study of the distal epidermis and the occurrence of subcuticular bacteria in the gutless tubificid phallodrilus albidus (Oligochaeta: Annelida)
Journal name Australian Journal of Zoology   Check publisher's open access policy
ISSN 1446-5698
Publication date 1982-01-01
Sub-type Article (original research)
DOI 10.1071/ZO9820327
Open Access Status Not yet assessed
Volume 30
Issue 2
Start page 159
End page 168
Total pages 10
Language eng
Subject 1105 Ecology, Evolution, Behavior and Systematics
1103 Animal Science and Zoology
Abstract The typically annelid cuticle of P. albidus has an increased population density of epicuticular projections, but this is not thought to be related to its gutless condition. The irregular outline of the apical membrane of the epidermal cells is an inherent feature, possibly enhancing an absorptive function. The cuticle- epidermal interface is characterized by multigranular bodies, rod-shaped bacteria and filiform structures. The multigranular bodies are present in the postclitellar region only, thus coinciding with the chalkiness of living specimens. The bacteria occur throughout the entire length of the worm, their presence exaggerating the irregularities of the apical membrane. The bacterial cytoplasmic membrane, in contrast to the limiting membrane, was difficult to resolve. Between the two membranes is an amorphous zone. Storage granules of a carbohydrate-rich complex are located peripherally and the bacterial core contains a reticulum of DNA threads. Filiform structures, ultrastructurally similar to the bacterial peripheral region, are numerous, especially where the bacteria are carbohydrate-rich. Connections with the bacterial bodies were observed, but infrequently. The non-pathologic association between the subcuticular bacteria and the gutless tubificid is discussed.
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Unknown

Document type: Journal Article
Sub-type: Article (original research)
Collection: Scopus Import - Archived
 
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