SEM observations on egg-shell of the Japanese tusser, Antheraea yamamai and Chinese tusser,Antheraea pernyi

The egg-shell surface structure of the Japanese tusser and Chinese tusser was observed by means of scanning electron microscopy. There were a lot of similarities between the two egg-shells, but the fine structure may be easily distinguished. As to the Japanese tusser, the petals of the petaloid pattern around micropyle were elongate and raised in the middle (Fig. 1); micropylar tubes numbered 11-13 (Figs. 2 and 3); the wider and thicker bank formed irregularly shaped net-like structure of the egg-shell surface other than in the vicinity of micropyle (Fig. 5); and the thickness of the egg-shell was about 70 μm. In the Chinese tusser the petals were shorter, wider,and even; micropylar tubes numbered 8-9 (Fig. 4); the narrow and low bank formed hexagonal, pentagonal, heptagonal, or octagonal net-like structure; the aeropyle wall was well developed, almost the same in size (Figs. 8 and 9); and the thickness of the egg-shell was about 40 μm.

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Fractographic Studies of the Honey Bee Sensilla Coeloconica and Sensilla Amupullacea Campaniformia by SEM

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100050949 ◽

1974 ◽

Vol 32 ◽

pp. 186-187

Author(s):

Alfred Dietz ◽

Leroy M. Anderson ◽

Malcolm T. Sanford

Keyword(s):

Electron Microscopy ◽

Scanning Electron Microscopy ◽

Fine Structure ◽

Surface Structure ◽

Honey Bee ◽

Honey Bees ◽

Sense Organs ◽

The Past ◽

Sensory Structures ◽

Scanning Electron

The antennal sensory organs of honey bees have been studied by many researchers in the past. In most instances their work was confined to readily identifiable cuticular sensory structures such as the pore plate organ (Figs. 1, 3) and several types of hair-like sensilla (Fig. 1). The total number of receptors on a honey bee antennae is roughly 13,000 of which about 8,200 belong to the hair-like receptors or s. trichodea group (Fig. 1). The pore plate organs or s. placodea comprise the next largest group with 3,000 receptors. The pit peg sense organs or s. ampullacea (Figs. 3, 5), and s. coeloconica (Figs. 1, 2) are present in considerably smaller number (approximately 300) and have received little attention since they cannot be readily identified on the basis of their surface structure. Thus, little is known about the fine structure of these pit peg organs. In this study, pit peg organs of plastic embedded antennae were examined by scanning electron microscopy.

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The Respiratory System of the Egg-Shell of Homorocoryphus Nitidulus Vicinus (Orthoptera, Tettigoniidae)

Journal of Experimental Biology ◽

10.1242/jeb.55.1.165 ◽

1971 ◽

Vol 55 (1) ◽

pp. 165-176

Author(s):

J. C. HARTLEY

Keyword(s):

Electron Microscopy ◽

Scanning Electron Microscopy ◽

Respiratory System ◽

Mathematical Analysis ◽

Oxygen Diffusion ◽

Water Retention ◽

Respiratory Efficiency ◽

Egg Shells ◽

Egg Shell ◽

Scanning Electron

1. An account is given of the structure of the egg-shell of Homorocoryphus nitidulus vicinus based on conventional and scanning electron microscopy. 2. The respiratory rates of the egg in air and under various degrees of flooding have been measured. 3. The problems of oxygen diffusion through egg-shells of this type have been subject to mathematical analysis. 4. The hypothetical and observed results for oxygen diffusion compare favourably, confirming that the respiratory system functions as suggested. 5. The eggs of Homorocoryphus cannot be said to have a plastron, and it is suggested that water retention may be more important than a high respiratory efficiency under water. 6. A distinction is drawn between respiratory efficiency of an egg under water and plastron efficiency.

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Two- or three-way observations of the identical cell elements within the same sections by LM, TEM and/or SEM

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100081279 ◽

1978 ◽

Vol 36 (2) ◽

pp. 82-83 ◽

Cited By ~ 1

Author(s):

Nakazo Watari ◽

Yasuaki Hotta ◽

Yoshio Mabuchi

Keyword(s):

Electron Microscopy ◽

Scanning Electron Microscopy ◽

Transmission Electron Microscopy ◽

Fine Structure ◽

Light Microscopy ◽

Thin Sections ◽

Transmission Electron ◽

Identical Cell ◽

Electron Microscopes ◽

Scanning Electron

It is very useful if we can observe the identical cell elements within the same sections by light microscopy (LM), transmission electron microscopy (TEM) and/or scanning electron microscopy (SEM) sequentially, because, the cell fine structure can not be indicated by LM, while the color is; on the other hand, the cell fine structure can be very easily observed by EM, although its color properties may not. However, there is one problem in that LM requires thick sections of over 1 μm, while EM needs very thin sections of under 100 nm. Recently, we have developed a new method to observe the same cell elements within the same plastic sections using both light and transmission (conventional or high-voltage) electron microscopes.In this paper, we have developed two new observation methods for the identical cell elements within the same sections, both plastic-embedded and paraffin-embedded, using light microscopy, transmission electron microscopy and/or scanning electron microscopy (Fig. 1).

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Fibroblasts During Hypertrophic Scar Formation and Resolution

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100072587 ◽

1973 ◽

Vol 31 ◽

pp. 428-429

Author(s):

C. W. Kischer

Keyword(s):

Electron Microscopy ◽

Scanning Electron Microscopy ◽

Cell Proliferation ◽

Fine Structure ◽

Metabolic Activity ◽

Hypertrophic Scar ◽

Normal Skin ◽

Ground Substance ◽

Hypertrophic Scars ◽

Scanning Electron

The morphology of the fibroblasts changes markedly as the healing period from burn wounds progresses, through development of the hypertrophic scar, to resolution of the scar by a self-limiting process of maturation or therapeutic resolution. In addition, hypertrophic scars contain an increased cell proliferation largely made up of fibroblasts. This tremendous population of fibroblasts seems congruous with the abundance of collagen and ground substance. The fine structure of these cells should reflect some aspects of the metabolic activity necessary for production of the scar, and might presage the stage of maturation.A comparison of the fine structure of the fibroblasts from normal skin, different scar types, and granulation tissue has been made by transmission (TEM) and scanning electron microscopy (SEM).

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Examination of Schistosome Cercariae and Schistosomules by Scanning Electron Microscopy

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100062154 ◽

1969 ◽

Vol 27 ◽

pp. 50-51

Author(s):

D. Johnson ◽

P. Moriearty

Keyword(s):

Electron Microscopy ◽

Scanning Electron Microscopy ◽

High Resolution ◽

Light Microscopy ◽

Surface Structure ◽

Extensive Study ◽

Scanning Microscopy ◽

Host Parasite ◽

Conventional Electron Microscopy ◽

Scanning Electron

Since several species of Schistosoma, or blood fluke, parasitize man, these trematodes have been subjected to extensive study. Light microscopy and conventional electron microscopy have yielded much information about the morphology of the various stages; however, scanning electron microscopy has been little utilized for this purpose. As the figures demonstrate, scanning microscopy is particularly helpful in studying at high resolution characteristics of surface structure, which are important in determining host-parasite relationships.

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Ultrastructure of the soil fungus, Geomyces pannorus

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100113573 ◽

1984 ◽

Vol 42 ◽

pp. 738-739

Author(s):

J. A. Traquair ◽

E. G. Kokko

Keyword(s):

Electron Microscopy ◽

Scanning Electron Microscopy ◽

Fine Structure ◽

Low Temperatures ◽

Soil Fungus ◽

Organic Soils ◽

Anatomical Studies ◽

Transmission Electron ◽

Electron Microscopical ◽

Scanning Electron

With the advent of improved dehydration techniques, scanning electron microscopy has become routine in anatomical studies of fungi. Fine structure of hyphae and spore surfaces has been illustrated for many hyphomycetes, and yet, the ultrastructure of the ubiquitous soil fungus, Geomyces pannorus (Link) Sigler & Carmichael has been neglected. This presentation shows that scanning and transmission electron microscopical data must be correlated in resolving septal structure and conidial release in G. pannorus.Although it is reported to be cellulolytic but not keratinolytic, G. pannorus is found on human skin, animals, birds, mushrooms, dung, roots, and frozen meat in addition to various organic soils. In fact, it readily adapts to growth at low temperatures.

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Microporous structures in natural polymer

E3S Web of Conferences ◽

10.1051/e3sconf/20184400014 ◽

2018 ◽

Vol 44 ◽

pp. 00014

Author(s):

Maciej Borowczak ◽

Stanisław Frąckowiak

Keyword(s):

Electron Microscopy ◽

Scanning Electron Microscopy ◽

Surface Structure ◽

Process Parameters ◽

Natural Polymer ◽

Butylene Succinate ◽

Biodegradable Poly ◽

Solvent Systems ◽

Scanning Electron

Electrospinning of biodegradable poly (butylene succinate) has been performed from different solvent systems. Alternation of process parameters resulted in respective changes of the surface structure topography which was evaluated by using scanning electron microscopy (SEM).

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