Zobrazeno 1 - 10
of 16
pro vyhledávání: '"Mark F. Feldlaufer"'
Publikováno v:
Physiological Entomology. 41:103-110
Accurate and timely surveillance of bed bug infestations is critical for the development of effective control strategies. Although the bed bug-produced volatiles (E)-2-hexenal and (E)-2-octenal are considered as defensive secretions, the present stud
Publikováno v:
Physiological Entomology. 35:203-213
Releaser pheromones have direct behavioural effects to arrest, attract or disperse insects, whereas interactions within groups of social insects are often influenced by primer pheromones. The behaviour of insects displaying intermediate levels of soc
Autor:
Anna Rachinsky, Mark F. Feldlaufer
Publikováno v:
Journal of Insect Physiology. 46:41-46
Five neuropeptides with known allatotropic or allatostatic activity in other insect species were examined for their effects on honey bee corpora allata. Using an in vitro radiochemical assay, we assessed the ability of these peptides to affect the bi
Publikováno v:
Archives of Insect Biochemistry and Physiology. 31:305-312
The larval midgut of the tobacco hornworm, Manduca sexta, has high ecdysone 20-monooxygenase (EZOMO) activity, located both in the mitochondria and in the microsomes. The apparent kinetic parameters for E20MO in mitochondria and microsomes were deter
Publikováno v:
Archives of Insect Biochemistry and Physiology. 23:199-211
The activities of ecdysone oxidase (EO), 3-oxoecdysteroid 3α-reductase (3α-R), and 3-oxoecdysteroid 3β-reductase (3β-R) were determined for epidermis, hemolymph, and fat body of wandering fifth instar Manduca sexta larvae and for midguts of vario
Autor:
Mark F. Feldlaufer, Gunter F. Weirich, William R. Lusby, Stephen L. Buchmann, James A. Svoboda
Publikováno v:
Archives of Insect Biochemistry and Physiology. 23:91-98
Using high performance liquid chromatography in conjunction with radioimmunoassay and mass spectrometry, the major ecdysteroid of the solitary cactus bee, Diadasia rinconis, was determined to be 20-hydroxyecdysone, with lesser amounts of makisterone
Publikováno v:
Journal of Insect Physiology. 37:929-935
Measurements of both juvenile hormone and ecdysteroid haemolymph titres were made from the same individuals to explore the possibility that there is an interaction between these hormones in the regulation of adult honey bee behaviour and physiology.
Publikováno v:
Archives of Insect Biochemistry and Physiology. 18:71-79
An ecdysteroid RIA was used to determine the ecdysteroid titer in developing embryos of Dysdercus fasciatus and revealed that peak titer occurred approximately 120 h post-oviposition. Analysis of neutral sterols at this time indicated sitosterol to b
Publikováno v:
Archives of Insect Biochemistry and Physiology. 18:105-117
Gut chitin synthase was characterized and the sterols and ecdysteroids in the sugarcane rootstalk borer weevil, Diaprepes abbreviatus, were identified. An in vitro cell-free chitin synthase assay was developed using larval gut tissues from D. abbrevi
Publikováno v:
Journal of Insect Physiology. 36:567-571
Release of mature sperm from the testes of the gypsy moth, Lymantria dispar , into the seminal ducts occurs in a daily rhythmic pattern. The rhythm of sperm release is initiated in developing pharate adults 3–4 days after spermatogenesis and develo