Main Title |
SEM (Scanning Electron Microscopy) Evidence for a New Species, 'Giardia psittaci' (Journal Version). |
Author |
Erlandsen, S. L. ;
Bemrick, W. J. ;
|
CORP Author |
Minnesota Univ., Minneapolis. Medical School.;Health Effects Research Lab., Research Triangle Park, NC. |
Publisher |
c1987 |
Year Published |
1987 |
Report Number |
EPA/600/J-87/391; |
Stock Number |
PB89-105894 |
Additional Subjects |
Giardia ;
Taxonomy ;
Parakeets ;
Scanning electron microscopy ;
Morphology ;
Reprints ;
Giardia psittaci
|
Holdings |
Library |
Call Number |
Additional Info |
Location |
Last Modified |
Checkout Status |
NTIS |
PB89-105894 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
Collation |
8p |
Abstract |
Giardia trophozoites were isolated from the small intestine of budgerigars (parakeets) and examined morphologically with light and scanning electron microscopy. The presence of a claw-hammer shape median body suggested classification of these trophozoites as G. duodenalis. However, unlike any known members of G. duodenalis, the Giardia trophozoites from budgerigars were morphologically distinct in that they lacked the ventrolateral flange and therefore did not have a marginal groove bordering the anterior and lateral border of the adhesive disc. The distinct morphology clearly indicated that trophozoites from budgerigars should be considered as a separate species, G. psittaci. The evidence has demonstrated that median body shape cannot serve as a sole criterion for speciation of Giardia. In addition, if other avian species of Giardia also resemble G. psittaci, then this would suggest that evolutionary divergence has occurred in the genus Giardia. (Copyright (c) American Society of Parasitologists 1987.) |
Supplementary Notes |
Pub. in Jnl. of Parasitology, v73 n3 p623-629 Jun 87. Sponsored by Health Effects Research Lab., Research Triangle Park, NC. |
NTIS Title Notes |
Journal article. |
Title Annotations |
Reprint: SEM (Scanning Electron Microscopy) Evidence for a New Species, 'Giardia psittaci' (Journal Version). |
Category Codes |
57N; 57K; 57Z |
NTIS Prices |
Not available NTIS |
Primary Description |
600/11 |
Document Type |
NT |
Cataloging Source |
NTIS/MT |
Control Number |
833027584 |
Origin |
NTIS |
Type |
CAT |