Biol. Bull. Sign up for etocs!
HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
QUICK SEARCH:   [advanced]


     

This Article
Right arrow Full Text (PDF)
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Services
Right arrow Email this article to a friend
Right arrow Similar articles in this journal
Right arrow Alert me to new issues of the journal
Right arrow Download to citation manager
Citing Articles
Right arrow Citing Articles via HighWire
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Dickson, J. S.
Right arrow Articles by Roye, D. B.
Right arrow Search for Related Content
PubMed
Right arrow Articles by Dickson, J. S.
Right arrow Articles by Roye, D. B.

The Biological Bulletin, Vol 180, Issue 1 154-166, Copyright © 1991 by Marine Biological Laboratory

PHYSIOLOGY

Distribution and Characterization of Ion Transporting and Respiratory Filaments in the Gills of Procambarus clarkii

J. S. Dickson, R. M. Dillaman, R. D. Roer and D. B. Roye
Center for Marine Science Research, University of North Carolina at Wilmington, 7205 Wrightsville Ave., Wilmington, North Carolina 28403

Individual gill filaments of the freshwater crayfish Procambarus clarkii were determined to be either predominantly respiratory or transporting. Silver staining revealed that the filaments within the central bed of the gills formed silver deposits whereas filaments at the margins and the entire sixth pleurobranch formed no deposits. Designation of the silver staining gills as predominantly transporting and unstained filaments as predominantly respiratory was substantiated by ultrastructural analyses and measurements of ATPase and transepithelial potentials. Presumptive transporting filaments had an epithelium subjacent to the cuticle that was relatively thick and dominated by abundant mitochondria. Lacunae were delineated by pillar structures and served as collateral pathways for the movement of blood from the afferent to efferent blood channels, which were separated by a thin septum. Presumptive respiratory filaments had an extremely thin epithelium with few organelles, but a relatively thick septum. Present in both types of filaments were nerves and podocytes. The values for Na, K-ATPase were significantly higher in the transporting filaments than in those designated as respiratory. The measurement of transepithelial potentials showed both filaments to be cation selective with the respiratory filaments slightly more positive and the transporting filaments slightly more negative than the diffusion potential for Na.


This article has been cited by other articles:


Home page
 J. Exp. Biol.Home page
D. Seneviratna and H. H. Taylor
Ontogeny of osmoregulation in embryos of intertidal crabs (Hemigrapsus sexdentatus and H. crenulatus, Grapsidae, Brachyura): putative involvement of the embryonic dorsal organ
J. Exp. Biol., April 15, 2006; 209(8): 1487 - 1501.
[Abstract] [Full Text] [PDF]

Home page
 J. Histochem. Cytochem.Home page
J.-H. Lignot and G. Charmantier
Immunolocalization of NA+,K+-ATPase in the Branchial Cavity During the Early Development of the European Lobster Homarus gammarus (Crustacea, Decapoda)
J. Histochem. Cytochem., August 1, 2001; 49(8): 1013 - 1024.
[Abstract] [Full Text] [PDF]


HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
Copyright © 1991 by the Marine Biological Laboratory.