Results 41 to 50 of about 1,135 (171)

Insect juvenile hormone: from "status quo" to high society

open access: yesBrazilian Journal of Medical and Biological Research, 2000
Juvenile hormone (JH) exerts pleiotropic functions during insect life cycles. The regulation of JH biosynthesis by neuropeptides and biogenic amines, as well as the transport of JH by specific binding proteins is now well understood.
K. Hartfelder
doaj   +1 more source

Methoprene modifies adipokinetic hormone characteristics in the firebug Pyrrhocoris apterus (Heteroptera: Pyrrhocoridae)

open access: yesEuropean Journal of Entomology, 2010
In the present study the hypothesis that there is a feedback between juvenile hormone and adipokinetic hormones (AKHs) was investigated by topical application of the juvenoid methoprene on 9-day-old adult males of the firebug Pyrrhocoris apterus.
Dalibor KODRÍK   +2 more
doaj   +1 more source

Juvenile hormone-receptor complex acts on mcm4 and mcm7 to promote polyploidy and vitellogenesis in the migratory locust. [PDF]

open access: yesPLoS Genetics, 2014
Juvenile hormone (JH), a sesquiterpenoid produced by the corpora allata, coordinates insect growth, metamorphosis, and reproduction. While JH action for the repression of larval metamorphosis has been well studied, the molecular basis of JH in promoting ...
Wei Guo   +7 more
doaj   +1 more source

Developmental changes in the ability to synthesize juvenile hormone in vitro by corpora allata from the Eri silkworm, Samia cynthia ricini (Lepidoptera: Saturniidae)

open access: yesEuropean Journal of Entomology, 2002
A radiochemical assay (RCA) has been used for the measurement of juvenile hormone (JH) synthesis in vitro by corpora allata (CA) from the Eri silkworm, Samia cynthia ricini.
Sheng LI, Rong-Jing JIANG, Mei-Xun CAO
doaj   +1 more source

Identification and function of ETH receptor networks in the silkworm Bombyx mori

open access: yesScientific Reports, 2021
Insect ecdysis triggering hormones (ETHs) released from endocrine Inka cells act on specific neurons in the central nervous system (CNS) to activate the ecdysis sequence.
Ivana Daubnerová   +5 more
doaj   +1 more source

Starvation increases insulin sensitivity and reduces juvenile hormone synthesis in mosquitoes. [PDF]

open access: yesPLoS ONE, 2014
The interactions between the insulin signaling pathway (ISP) and juvenile hormone (JH) controlling reproductive trade-offs are well documented in insects.
Meritxell Perez-Hedo   +2 more
doaj   +1 more source

On the corpora allata of dipterous insects [PDF]

open access: yesProceedings of the Royal Society of London. Series B - Biological Sciences, 1937
It is well known from Nabert’s extensive work (1913) on the corpora allata of the Insecta that these small organs are of general occurrence in that class of animals. In so far as the Diptera are concerned, this investigator gave little attention to that order, and only described the corpora allata in the adults of two species of
openaire   +1 more source

LsFAMeT and LsJHAMT coordinate JH biosynthesis to regulate fecundity in Laodelphax striatellus

open access: yesInsect Science, EarlyView.
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

Susceptibility to the Neonicotinoid Pesticide Imidacloprid Is Linked to Life History Regulation in Honey Bees (Apis mellifera L.)

open access: yesMolecular Ecology, Volume 35, Issue 6, March 2026.
ABSTRACT The Western honey bee (Apis mellifera) is a globally important pollinator. Its health in natural and managed populations is compromised by numerous factors, including pesticides. Neonicotinoid pesticides are widely used even though they can cause a variety of detrimental effects.
Gursimran Toor   +2 more
wiley   +1 more source

On the corpora allata of dipterous insects. II [PDF]

open access: yesProceedings of the Royal Society of London. Series B - Biological Sciences, 1938
In an earlier paper (Burtt 1937) it was suggested, on morphological and histological evidence, that Weismann’s ring in the larva of Calliphora represents the modified corpora allata. Fraenkel (1935) had previously found that pupation in Calliphora is induced by a hormone which is secreted in ...
openaire   +1 more source

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