By Erwin Huebner (auth.), Robert C. King, Hiromu Akai (eds.)
Cell biology is relocating at breakneck pace, and lots of of the implications from experiences on bugs have helped in knowing a few of the important difficulties of biology. The time is consequently ripe to supply the clinical neighborhood with a chain of updated, good illustrated stories of chosen elements of the sub microscopic cytology of bugs. the subjects we now have integrated fall into 4 common teams: seven chapters take care of gametogenesis, 4 drawback boost ing somatic cells, seventeen chapters describe really good tissues and organs, and 3 chapters conceal cells in pathological states. those money owed are illustrated with over six hundred electron micrographs. The greater than 1100 pages within the volumes of Insect Ultrastructure mixed labors of forty nine committed participants from II international locations. symbolize the those authors have digested and seriously summarized a really huge physique of knowledge, and a few degree of this attempt will be won from consulting the bibliographies that shut all of the 31 chapters. those include 2400 publica tions authored through 1500 various scientists. although, ahead of we congratulate ourselves at the complicated country of our wisdom, it's worthy remembering that representatives of below 0.01 % of the recognized species of bugs were tested with the electron microscope.
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Additional info for Insect Ultrastructure: Volume 2
This difference may be due to the fact that Dysdercus has many developing follicles, whereas Rhodnius has only one vitellogenic follicle. The tropharium of the coleopteran, Ips, has current leaving the lateral sides (Huebner, 1984). The is the reverse of the hemipterans and interestingly coincides with the presence of an incomplete inner sheath. For a comparative view of ovarian currents see Huebner (1984) and Woodruff et al. (1984). With the greater geometric separation between oocytes and nurse cells in the telotrophic as compared to the polytrophic ovaries, the telotrophic ovary should be a particularly valuable system to study intracellular transport and localization.
The microvilli continue a short distance onto the cord where an abrupt transition to the smooth surface occurs. The cords pass through prefollicular tissue as well as through small follicles where the cord abuts the oolemma of the oocyte (Huebner, 19S1a). Procion yellow, fluorescein, and lucifer yellow microinjection indicate little if any junctional contact exists between the oolemma and cords passing by to supply larger oocytes (Huebner, 19S1a; Figure 21). EM studies show hemipteran trophic cords contain one of the richest arrays of micro tubules reported for any tissue in the animal kingdom (Hamon and Folliot, 1969; Brunt, 1970; Huebner and Anderson, 1970; MacGregor and Stebbings, 1970).
From Huebner (l98Ia) courtesy of Longman Group. ) Figure 15. Thin sections showing the rich array of microtubules, ribosomes, and mitochondria in the trophic core. This tropharium has been exposed to cation-free saline. ) Figure 16. Thick section of an ovariole of the coleopteran Zygogramma exclamationis (sunflower beetle) showing the cellular tropharium (T) with no core, small oocytes (0) at the base and larger ones with follicle cells (F) lower. The tropharium has cytoplasmic continuity between adjacent nuclei containing compartments.
Insect Ultrastructure: Volume 2 by Erwin Huebner (auth.), Robert C. King, Hiromu Akai (eds.)