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Ultrastructural Observations On The Development Of Some Actinosporean Types Within Their Oligochaete Hosts, Ahmet Özer, Rodney Wootten
Ultrastructural Observations On The Development Of Some Actinosporean Types Within Their Oligochaete Hosts, Ahmet Özer, Rodney Wootten
Turkish Journal of Zoology
Synactinomyxon type 1, aurantiactinomyxon type 3, echinactinomyxon type 5 and raabeia type 4 were studied at the TEM level in order to determine the developmental stages within their oligochaete hosts. All the actinosporean types studied had uninucleate cells as the earliest stage of development. The formation of a subsequent binucleate cell stage was either due to the division of the nucleus in a uninucleate cell or the plasmogamy of two uninucleate cells. The earliest pansporocyst formation seen was two outer somatic cells surrounding two inner generative \alpha and \beta cells in all the actinosporean types studied. However, the formation of …
The Effects Of Precocene Ii On The Fine Structure Of Corpus Allatum In Adult Female Anacridium Aegyptium L. (Orthoptera, Acrididae), Gürsel Ergen
Turkish Journal of Zoology
In this study, the effects of the antijuvenile hormone Precocene II on the corpus allatum of adult females of Anacridium aegyptium L. (Orthoptera) were investigated with electron microscopy. In the insects, topically treated with 500 µg precocene II, the corpora allata did not show marked atrophy or destruction. After 10 or 20 days of precocene II treatment, the ultrastructural changes of especially the nuclei, mitochondria, endoplasmic reticulum membranes, Golgi complexes and some other intracellular organelles in the gland cells, probably reflect a moderate sensitivity to this compound.