• Publications
  • Influence
7 – Biochemistry of Digestion
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Density-dependent physiological phase in insects.
Insects respond to crowding in a variety of ways that are usually exemplified by rapid changes in behavior and culminate in enduring long-term morphological and/or chromatic responses. A commonExpand
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The -amylase of the Beetle Callosobruchus chinensis. Properties.
C. chinensis larval amylase is activated by Ca(2+) and inhibited by Cl(-) and EDTA (K(i) 6.7x10(-3)m). GSH and 2-mercaptoethanol activate, presumably at different sites, as 2-mercaptoethanolExpand
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Juvenile hormone bisepoxide biosynthesis in vitro by the ring gland of Drosophila melanogaster: a putative juvenile hormone in the higher Diptera.
The in vitro production of juvenile hormone (JH) was investigated by using isolated ring glands from third instar Drosophila melanogaster. A JH-like molecule is secreted that comigrates with aExpand
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Sex-peptide activates juvenile hormone biosynthesis in the Drosophila melanogaster corpus allatum.
Mating elicits two well-defined reactions in sexually matured females of many insects: reduction of receptivity and increased oviposition. These post-mating responses have been shown to be induced byExpand
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Isolation and characterization of a new trypsin-like enzyme from Tenebrio molitor L. larvae.
A trypsin-like enzyme (TLE) was separated and purified from Tenebrio molitor larval midgut enzyme solution by ion-exchange chromatography on a DEAE-cellulose column. The purified enzyme was found toExpand
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Regulation of juvenile hormone synthesis in wild-type and apterous mutant Drosophila
Juvenile hormone (JH) is a major regulator of insect development and reproduction and its titer is determined largely by central nervous system regulation of JH synthesis by the corpora allata. ToExpand
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Population structure of the pestiferous moth Helicoverpa armigera in the Eastern Mediterranean using RAPD analysis
The genetic structure of the cotton bollworm, Helicoverpa armigera (Hübner) (Lepidoptera: Noctuidae), was studied in the eastern Mediterranean. Moths were sampled in six locations (five in Israel,Expand
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Drosophila melanogaster sex peptide stimulates juvenile hormone synthesis and depresses sex pheromone production in Helicoverpa armigera.
Previous studies demonstrate that virgin female adult Helicoverpa armigera (Lepidoptera: Noctuidae) moths exhibit calling behaviour and produce sex pheromone in scotophase from the day afterExpand
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The kinetics of nutrient incorporation into body tissues of gilthead seabream (Sparus aurata) females and the subsequent effects on egg composition and egg quality.
The interaction between essential dietary components and changes in tissue nutrient reserves, egg quality and egg composition, were studied from 60 d before and during the spawning of Sparus aurataExpand
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