Results 41 to 50 of about 659 (187)
The Insect Prothoracic Gland as a Model for Steroid Hormone Biosynthesis and Regulation
Steroid hormones are ancient signaling molecules found in vertebrates and insects alike. Both taxa show intriguing parallels with respect to how steroids function and how their synthesis is regulated.
Qiuxiang Ou +5 more
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Mechanisms of the suppression of gonadotropic activity of the corpus allatum (CA) in macropterous females were compared with those previously reported for either diapause or starving non-diapause brachypterous females by reciprocal transplantations of ...
Magdalena HODKOVÁ, Radomír SOCHA
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Allatostatin inhibition and farnesol stimulation of corpus allatum activity in embryos of the viviparous cockroach, Diploptera punctata [PDF]
[[abstract]]Juvenile hormone (JH) biosynthesis by corpora allata (CA) from embryos of the cockroach Diploptera punctata was measured at four stages during the latter half of embryogenesis.
Holbrook, GL;Chiang, AS;Schal, C
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Precocious metamorphosis in the juvenile hormone-deficient mutant of the silkworm, Bombyx mori. [PDF]
Insect molting and metamorphosis are intricately governed by two hormones, ecdysteroids and juvenile hormones (JHs). JHs prevent precocious metamorphosis and allow the larva to undergo multiple rounds of molting until it attains the proper size for ...
Takaaki Daimon +15 more
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Inhibitory Effects of the Corpora Cardiaca and of the Corpus Allatum in Drosophila [PDF]
THE function of the corpora cardiaca in Diptera is, at present, obscure. According to unpublished data of M. Thomson (cit. by E. Thomsen1), an extract of the corpus cardiacum of the blowfly (Calli-phora), when injected into blinded shrimps (Leander) with maximally expanded chromatophores causes a strong contraction of the red and black pigment. Whether
openaire +2 more sources
Background Environmental stressors induce changes in endocrine state, leading to energy re-allocation from reproduction to survival. Female Drosophila melanogaster respond to thermal and nutrient stressors by arresting egg production through elevation of
Matthew R. Meiselman +2 more
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LsFAMeT and LsJHAMT coordinate JH biosynthesis to regulate fecundity in Laodelphax striatellus
The small brown planthopper (SBPH), Laodelphax striatellus, can trigger large‐scale outbreaks when encountering suitable habitats during migration due to their strong reproductive ability. This study investigated the role of juvenile hormone (JH) in regulating SBPH reproduction.
Yan Guo +3 more
wiley +1 more source
Hormonal control of protein synthesis in the fat body of Leptinotarsa decemlineata [PDF]
This thesis deals with the hormonal control of protein synthesis in the female fat body of Leptinotarsa decemlineata Say. The results are discussed in relation to reproduction (obtained by rearing under long day conditions) and the preparation for ...
Dortland, J.F.
core
Flight in female beet webworms (Loxostege sticticalis) promotes an increase in feeding, thereby enhancing abdominal energy reserves. Following flight, the flight muscles undergo accelerated histolysis, and the energy substances undergoing histolysis are redirected to the ovaries. These two processes collectively promote ovarian development.
Yu Gao +5 more
wiley +1 more source
Ultrastructural development in the corpus allatum of the adult worker honey bee [PDF]
The ultrastructure of the corpus allatum of the Cape worker honey bee has been examined in a systematic way during the first thirty days of adult life.
Lloyd, Gerry Trevor
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