Ovarian regulation of the corpus allatum in the housefly, Musca domestica |
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| Authors: | T S Adams |
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| Affiliation: | 1. Institute of Molecular Biosciences, Mahidol University, Salaya Campus, Nakhon Pathom 73170, Thailand;2. Department of Biochemistry, Faculty of Sciences, Mahidol University, Rama VI Road, Bangkok 10400, Thailand;1. Department of Microbiology and Immunology, School of Medicine, University of Maryland, Baltimore, MD, USA |
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| Abstract: | Corpus allatum area in the housefly, Musca domestica L., decreased before vitellogenesis occurred in the ovaries and then increased in area by stage 5 or 6 of ovarian development. Both ovariectomy and oviposition resulted in a drop in corpus allatum area. It was concluded that a small corpus allatum released juvenile hormone, whereas a large gland stored hormone. Injection of extract containing oöstatic hormone into ovariectomized flies increased the area of the corpus allatum; 26 μg of extract maintained a large corpus allatum for 32 hr. A humorally mediated inhibitory feedback mechanism exists between the ovaries and the corpus allatum. |
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