... affects flight performance in the Glanville fritillary. Individuals were flown under either normoxic (21 kPa O 2 ) or hypoxic (10 kPa O 2 ) conditions and their flight metabolism was measured. To determine resource use, levels of circulating glucose, trehalose and whole-body triglyceride were recorded...

... imposed by nurse bees (young adult workers that feed the larvae) play a key role in honey bee division of labor ( Page, 2013 ). Starvation during development was associated with elevated glucose levels (Student's t -test: t =3.2550, N =36, P =0.0064; Fig. 4 A) as well as increased trehalose...

... tergites. The head and thorax were quickly cut into pieces and the abdomen was collected by removing the digestive tract and sting apparatus. All samples were quickly flash-frozen in liquid nitrogen. Glucose and trehalose were measured in the hemolymph, and glycogen and triglycerides were measured...

...Gerhard Wegener; Claudia Macho; Paul Schlöder; Günter Kamp; Osamu Ando SUMMARY Trehalase (EC 3.2.1.28) hydrolyzes the main haemolymph sugar of insects, trehalose, into the essential cellular substrate glucose. Trehalase in locust flight muscle is bound to membranes that appear in the microsomal...

... hardiness free amino acid hypogean crustacean thermal variation trehalose Subterranean environments are composed of a great diversity of habitats( Juberthie and Decu, 1994b ),in which 97% of the worlds liquid freshwater can be found( Castany, 1998 ). Depending on the geological substratum, water...

... and in a morphologically close aquatic, surface-dwelling (i.e. epigean) crustacean Gammarus fossarum acclimated to 12°C, 3°C and –2°C. With decreasing temperature, G. fossarum significantly increased its alanine and glutamine levels, while trehalose body content was found to increase above control levels only at –2°C. N...

.... superbus that can readily survive immediate exposure to severe desiccation (fast desiccation strategists). Using this panel of nematodes we investigated the effect of preincubation at high RH on the accumulation of trehalose and on the nematodes' anhydrobiotic potential. We found that there is a strong...

...Qiaofang Chen; Gabriel G. Haddad SUMMARY Trehalose is a nonreducing disaccharide in which the two glucose units are linked in an α,α-1,1-glycosidic linkage. The best known and most widely distributed pathway of trehalose synthesis involves the transfer of glucose from UDP-glucose to glucose 6...

... accumulate large amounts of trehalose, which provides effective protection against desiccation because of its high capacity for water replacement and vitrification. As the occurrence of rapid trehalose synthesis coincides with loss of body water, changes of osmolarity in the body are thought to be a cue...

...Gerhard Wegener; Volker Tschiedel; Paul Schlöder; Osamu Ando SUMMARY The main blood sugar of locusts is trehalose, which is hydrolysed to two glucose units by trehalase. Homogenates of locust flight muscles are rich in trehalase activity, which is bound to membranes. A minor fraction of trehalase...

... cryptobiotic invertebrate, Polypedilum vanderplanki . Larvae of this insect rapidly accumulated a large amount of the carbohydrate,trehalose, (18% of dry body mass) during desiccation for 2 days, suggesting that a high level of trehalose accumulation contributed to the successful induction of cryptobiosis in P...

... maintained on a single artificial diet established that parasitized insects display an aberrant induction of gluconeogenesis, so that haemolymph trehalose is maintained at a level equivalent to that of normal insects. In contrast, the present results demonstrated that parasitized larvae offered a choice...

... from the crop or in the rate of trehalose synthesis in the fat bodies. Independent of the concentration of the sucrose solution supplied, haemolymph trehalose, glucose and fructose levels were constant for metabolic rates from 0 to 4.5mlCO 2 h −1 . At higher metabolic rates, trehalose concentration...

... the Argentine cockroach Blaptica dubia with an extract of the corpora cardiaca containing as little as 0.005 gland equivalents ml −1 of incubation medium increased the release of trehalose (anthrone-positive material) from the tissue by more than 100 %. The content of the glycolytic activator fructose 2,6...

...-acclimated Hemideina maori was found to contain relatively high concentrations of the cryoprotectants trehalose (>300 mmol l −1 ) and proline (41 mmol l −1 ). Survival of isolated Malpighian tubules was correspondingly high when a high concentration of trehalose was present in the bathing saline. Tubules...

..., mobilizable carbohydrates (trehalose, glycogen, glycerol). Calculations indicate that, if these carbohydrates are being utilized at all during anoxia, the rate is at the least 50 000 times lower than the aerobic rate (lower limit of detection). Indications of proteolysis during prolonged anoxia were sought...

... be incubated in sea water under anoxic conditions for over 5 months without a decrease in viability. Subsequent work showed that anoxic cysts did not carry out a conventional lactate-producing metabolism and that the breakdown of trehalose, a disaccharide required for the energy metabolism of aerobic cysts...