Physiology of heartbeat reversal in diapausing pupae of the tobacco hornworm, Manduca sexta (Lepidoptera: Sphingidae)
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چکیده
منابع مشابه
Heartbeat reversal after sectioning the dorsal vessel and removal of the brain of diapausing pupae of Manduca sexta (Lepidoptera: Sphingidae)
Reversal of heartbeat was monitored in vivo by noninvasive, multisensor, thermo-cardiographic and pulse-light, optocardiographic techniques. The dorsal vessel was sectioned at the beginning, in the middle and near the end of the abdomen. Changes in the heartbeat were simultaneously monitored in both the disconnected anterior and posterior sections of the heart. The results revealed the existenc...
متن کاملCharacterization and distribution of the hydrocarbons found in diapausing pupae tissues of the tobacco hornworm, Manduca sexta (L.).
The cuticular hydrocarbons of diapausing pupae of the tobacco hornworm, Manduca sexta (L.), are composed of two types of hydrocarbons: n-alkanes (3%) and unsaturated hydrocarbons (97%). The integument, fat body, muscle, and hemolymph are composed of three types of hydrocarbons: n-alkanes (9, 6, 9, and 2%, respectively), branched alkanes (75, 85, 80, and 56%, respectively), and unsaturated hydro...
متن کاملSex-Specific Odorant Receptors of the Tobacco Hornworm Manduca Sexta
As odor information plays a vital role in the life of moths, their olfactory sense has evolved into a highly specific and sensitive apparatus relevant to reproduction and survival. The key players in the detection of odorants are olfactory receptor (OR) proteins. Here we identify four OR-encoding genes differentially expressed in the antennae of males and females of the sphingid moth Manduca se...
متن کاملUrea and amide-based inhibitors of the juvenile hormone epoxide hydrolase of the tobacco hornworm (Manduca sexta: Sphingidae).
A new class of inhibitors of juvenile hormone epoxide hydrolase (JHEH) of Manduca sexta and further in vitro characterization of the enzyme are reported. The compounds are based on urea and amide pharmacophores that were previously demonstrated as effective inhibitors of mammalian soluble and microsomal epoxide hydrolases. The best inhibitors against JHEH activity so far within this class are N...
متن کاملCellular changes in the prothoracic glands of diapausing pupae of Manduca sexta.
Prothoracic glands from diapausing pupae of the tobacco hornworm, Manduca sexta, synthesize markedly less ecdysone in vitro in response to prothoracicotropic hormone (PTTH) than do glands from non-diapausing pupae. Impaired steroidogenesis is also observed in glands from diapausing animals exposed to agents that enhance ecdysone synthesis in non-diapausing pupal glands by increasing intracellul...
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ژورنال
عنوان ژورنال: European Journal of Entomology
سال: 2001
ISSN: 1210-5759,1802-8829
DOI: 10.14411/eje.2001.061