Pseudopodial Movements of Foraminifera

@article{Sandon1934PseudopodialMO,
  title={Pseudopodial Movements of Foraminifera},
  author={H. Sandon},
  journal={Nature},
  year={1934},
  volume={133},
  pages={761-762}
}
WORK of recent years has done much to elucidate the protoplasmic changes accompanying amœboid movement. The endoplasmic streaming which is the most striking feature in the pseudopodium of an amœba is not, however, present in most other rhizopods in which locomotion by creeping is less well developed, and it seems that the time is ripe for a careful re-examination of the different types of pseudopodia. 
PROTOPLASMIC MOVEMENT IN THE FORAMINIFERAN, ALLOGROMIA LATICOLLARIS; AND A THEORY OF ITS MECHANISM
TLDR
It is proposed that the mechanism of filament streaming in Allogromia consists of active shearing or parallel displacement forces located between the adjacent surfaces of the two gel filaments, acting longitudinal and oppositely from one filament to the other so as to produce two-way streaming. Expand
RETICULOPODIA: STRUCTURAL AND BEHAVIORAL BASIS FOR THE SUPRAGENERIC PLACEMENT OF GRANULORETICULOSAN PROTISTS
TLDR
Promiscuous plasma membrane fusion, experimentally demonstrated here for the first time, together with the presence of tubulin polymorphs and a unique class of ellipsoid vesicles, form a suite of phenotypic characters that further define the suprageneric status of these protists. Expand
Mechanisms of Movement in Taxonomy of Sarcodina. I. As a Basis for a New Major Dichotomy into Two Classes, Autotractea and Hydraulea
TLDR
All previously proposed classes of Sarcodina are suggested and the establishment of the class Autotractea for organisms employing the active shearing mechanism; and the class Hydraulea for those organism employing the contraction-hydraulic mechanism are suggested. Expand
Studies on Polystomella Lamarck (Foraminifera)
TLDR
It is concluded that a complete life cycle consisting of one microspheric and one megalospheric phase occupies a period of about two years, and an attempt to carry the life cycle beyond the stage of sporulation is described. Expand
Studies on the motility of the foraminifera. I. Ultrastructure of the reticulopodial network of Allogromia laticollaris (Arnold)
TLDR
Stereo electron micrographs of whole-mount, fixed, and critical-point-dried organisms show that the complex pattern of MT deployment reflects the pattern of particle motion in both flattened and highly branched portions of the RPN. Expand
CHAPTER 3 – Ameboid Movement
TLDR
Cell movements that involve form changes brought about through cytoplasmic streaming are usually designated as ameboid movement and are of prime importance in the development of perhaps all multicellular organisms. Expand
Shadowgraphs of protoplasmic movement inAllogromia laticollaris and a correlation of this movement to striated muscle contraction
I n t r o d u c t i o n In Atlogromia laticotlaris protoplasmic m.ovement is rapid and cont,inuou.s. The pseud,opod,s of the organism are ex tended front a single opening in the shell radia l ly inExpand
Optical approaches to the study of foraminiferan motility.
TLDR
Video-enhanced differential interference contrast light microscopy has demonstrated that the microtubules serve as the intracellular tracks along which rapid bidirectional organelle transport and cell surface motility occurs. Expand
Cell structures and their significance for ameboid movement.
TLDR
This chapter explains how modern cell morphology, which is largely based on electron microscopy, can contribute to the analysis of the mechanism of ameboid movement. Expand
Analogy between Pseudopodia and Nerve Fibres
A GOOD many years ago, Verworn1 developed in some detail a supposed analogy between rhizopod pseudopodia and nerve fibres. He suggested that these represent two extreme types of living substance inExpand
...
1
2
3
...