التفاصيل البيبلوغرافية
| العنوان: |
Changes in the midgut cells in the European cave spider, Meta menardi, during starvation in spring and autumn. |
| المؤلفون: |
Lipovšek, Saška, Leitinger, Gerd, Novak, Tone, Janžekovič, Franc, Gorgoń, Szymon, Kamińska, Karolina, Rost-Roszkowska, Magdalena |
| المصدر: |
Histochemistry & Cell Biology; Mar2018, Vol. 149 Issue 3, p245-260, 16p, 2 Color Photographs, 6 Diagrams, 4 Charts |
| مصطلحات موضوعية: |
SPIDERS, STARVATION, FAT cells, TRANSMISSION electron microscopy, LYSOSOMES, GLYCOGEN, INSECTS |
| مستخلص: |
During the growth period, in surface habitats, spiders catch enough prey to feed normally. In contrast, in the cave entrance zone, prey may be relatively scarce. Meta menardi inhabits this cave section, resulting in temporary starvation. We studied structural changes in the midgut epithelial cells of M. menardi during a short-term and a medium-term controlled starvation to mimic the occasional starvation in caves, during spring and autumn. Digestive cells, secretory cells and adipocytes were examined before the experimental starvation, in the middle and at the end of starvation. We used light microscopy, transmission electron microscopy and specific histochemical methods for the detection of lipids, polysaccharides and proteins. Detection of lysosomes, autolysosomes and apoptosis was also carried out. The general structures of the cells did not change during the experimental starvation in either season, while some specific differences in the ultrastructure were observed. In both sexes, in both seasons, the amounts of lipids, glycogen and proteins decreased during starvation. Larger amounts of lipids were found in autumn, while there were no significant differences in the amounts of glycogen and proteins. In both sexes, in both seasons, autophagy and apoptosis intensified with starvation in progress, but more intensively in females. Thus, autumn individuals, in contrast to spring ones, compile energy-supplying stores to confront the subsequent winter deficiency of prey in caves, while the cellular ultrastructures undergo the same starvation-dependant changes at any time during the growth period. [ABSTRACT FROM AUTHOR] |
|
Copyright of Histochemistry & Cell Biology is the property of Springer Nature and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) |
| قاعدة البيانات: |
Complementary Index |