Acanthamoeba comandoni and A. astronyxis: Taxonomic Characteristics of Mitotic Nuclei, "Centrosomes" and Cysts |
| |
| Authors: | THOMAS K SAWYER JOE L GRIFFIN |
| |
| Institution: | U.S. Dept. of Commerce, National Oceanic and Atmospheric Administration, National Marine Fisheries Service, Biological Laboratory, Oxford, Md. 21654 and Armed Forces Institute of Pathology, Washington, D. C. 20305 |
| |
| Abstract: | SYNOPSIS. A new strain (F-111) of Acanthamoeba comandoni was isolated from Turtle Pond, Boston, Mass. Comparative studies of A. comandoni Pussard, 1964 and A. astronyxis Ray & Hayes, 1954 indicated that the 2 species are distinct, and that the 2 names are valid and not synonymous as proposed by various investigators. An astral or brush-pile “centrosomal body” was present near the nucleus of interphase stages of both species. During mitosis, bipolar “centrosomal bodies” were detected in A. comandoni but not in A. astronyxis. Cysts of both species were spherical and had stellate or rayed endocysts. The rays in cysts of A. comandoni extended outward and upward at different angles, and all of them were not visible in the same optical plane. In A. astronyxis, the rays extended outward from the central cyst mass, and all of them were visible in the same optical plane. |
| |
| Keywords: | |
|
|
