| Neuroendocrine control of o?cyte development in the beetle Aulacophora foveicollis Luc |
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| 摘 要： |
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| 收稿时间： | 1965-10-12 |
Neuroendocrine control of oöcyte development in the beetle Aulacophora foveicollis Luc. |
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| R S Saini. Neuroendocrine control of oöcyte development in the beetle Aulacophora foveicollis Luc.[J]. Journal of insect physiology, 1966, 12(8): 1003-1008. DOI: 10.1016/0022-1910(66)90086-2 |
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| Authors: | R S Saini |
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| Affiliation: | 1. Institute of Entomology, Biology Centre, Czech Academy of Sciences, Ceske Budejovice, Czech Republic;2. Faculty of Sciences, University of South Bohemia, Ceske Budejovice, Czech Republic;3. Institute of Tropical Biology and Conservation, Universiti Malaysia Sabah, Kota Kinabalu, Sabah, Malaysia;4. Department of Crop and Environment Sciences, Harper Adams University, Newport, United Kingdom;5. CAS Key Laboratory of Tropical Forest Ecology, Chinese Academy of Sciences, Yunnan, China;6. Department of Ecology, Faculty of Science, Charles University Prague, Staré Město, Czech Republic;7. ForestGEO, Smithsonian Tropical Research Institute, Balboa, Ancon, Panama;8. Maestria de Entomologia, Universidad de Panama, Panama, Panama;9. Field Science Education and Research Center, Kyoto University, Kyoto, Japan;10. Faculty of Sciences, Kagoshima University, Kagoshima, Japan;1. Department of Farm Machinery and Power Engineering, Punjab Agricultural University (PAU), Ludhiana, Punjab, India;2. Department of Entomology, Punjab Agricultural University (PAU), Ludhiana, Punjab, India |
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| Abstract: | There are 8 to 10 median neurosecretory cells of type A on each side of the intercerebralis. These median neurosecretory cells show secretory activity. There are two lateral cells which do not show any cyclic activity. The corpus cardiacum consists of two lobes which are free in the posterior side but are united in the anterior where they surround the aorta. There is a separate hypocerebral ganglion. Some of the axons of N.C.C. I and N.C.C. II, which innervate the corpus cardiacum, enter the corpus allatum. Some neurosecretory material is brought into the corpus allatum where it either functions as a precursor or as a stimulant and activates the corpus allatum. The cells of the corpus allatum are small, mostly of the same type, and show different levels of activity. Discharge of neurosecretory material in the aorta stimulates protein metabolism and ovarian development, and the oöcyte descends into the vitellarium. Some neurosecretory material also reaches the corpus allatum and it functions either as a precursor or as a stimulant and activates the corpus allatum which then becomes enlarged. Its modified secretion further initiates ovarian development. |
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