juvenile hormone

Any of several hormones in insects that regulate various physiological processes, especially larval development and reproduction.

juvenile hormone

a hormone present in juvenile insects and secreted by the CORPUS ALLATUM of the brain. So long as it is produced, the cuticle maintains the characteristics of the nymphal or larval form at each moult. Only when it ceases to be present or the level falls below a threshold value does the insect moult to the adult form. Juvenile hormones have been used as an effective means of controlling insects, for example, in preventing the development of adult ants during hospital infestations.

Collins Dictionary of Biology, 3rd ed. © W. G. Hale, V. A. Saunders, J. P. Margham 2005

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References in periodicals archive

Juvenile hormone stimulates pheromone tropic brain factor release in the female black cutworm Agrotis ypsilon.

Reproductive behavior and sex pheromone production in Eutectona machaeralis (Lepidoptera: Crambidae)

(2013) Determination by LC-MS of juvenile hormone titers in hemolymph of the silkworm, Bombyx mori.

New synthesis of a stereoisomeric mixture of methyl 12-trishomofarnesoate, a juvenile hormone mimic useful in sericulture by increasing silk production

Biosynthetic pathway of insect juvenile hormone III in cell suspension cultures of the sedge Cyperus iria.

Volatile chemical composition and bioactivities from Colombian Kyllinga pumila Michx (Cyperaceae) essential oil/Composicao quimica volatil e bioactividades do oleo essencial do colombiano Kyllinga pumila Michx (Cyperaceae)

Ecdysteroids, juvenile hormone and insect neuropeptides: Recent successes and remaining major challenges, Gen.

EFFECTS OF 20-HYDROXYECDYSONE AND INSULIN APPLICATION ON REPRODUCTION IN EPHESTIAKUEHNIELLA ZELLER (LEPIDOPTERA: PYRALIDAE)

This insecticide acts as juvenile hormone mimic and a potent inhibitor of embryogenesis, metamorphosis and adult formation.

Biochemical and toxic characterization of some insect growth regulators to the pink bollworm, Pectinophora gossypiella (Saunders)

Transcription patterns of the studied genes indicated that TBT activated the transcription of RXR receptor, as it has been reported in gastropods and vertebrates, and altered the ecdysone and juvenile hormone receptor signaling pathways as reported in other studies.

Obesogens beyond vertebrates: lipid perturbation by tributyltin in the crustacean daphnia magna

Khafagi, "Effects of juvenile hormone I, precocene I and precocene II on the progeny of Microplitis rufiventris Kok.

Isolation of insecticidal constituents from the essential oil of Ageratum houstonianum Mill. against Liposcelis bostrychophila Badonnel

Juvenile hormone has been described as part of a transduction system that assesses nutritional information and regulates reproduction in mosquitoes [96].

Juvenile hormone biosynthesis in insects: what is new, what do we know, and what questions remain?

Improvement of biomass and juvenile hormone III (JH III) production from Cyperus aromaticus cell suspension culture via in situ membrane filtration technology.

Production of cell biomass and artemisinin via batch cell culture of Artemisia annua

Insect growth regulators include compounds that may affect moulting and metamorphosis by mimicking juvenile hormone activity (juvenile hormone agonists) or antagonizing juvenile hormone activity (ecdysteroids agonists) or by interfering with cuticle formation (chitin synthesis inhibitors) such as benzoylphenyl ureas (Oberlander et al., 1997; Phillips and Throne, 2010).

IMPACT OF TRIFLUMURON ON REPRODUCTION AND DEVELOPMENT OF RED FLOUR BEETLE, TRIBOLIUM CASTANEUM (HERBST) (COLEOPTERA: TENEBRIONIDAE)

We used a sensitive invertebrate bioassay using metamorphosis of trochophore larvae of a marine annelid, Capitella, which responded within 1 h of treatment, to determine levels of bioactive compounds, demonstrating that the compounds had juvenile hormone activity, similar to the crustacean juvenile hormone methyl farnesoate (Laufer et al.

The effect of alkylphenols on lobster shell hardening

The 273 million DNA units that make up the monarch genome also include a complete set of genes for producing juvenile hormone, which summer butterflies use to kick-start reproduction.

DNA to flutter by