Changes in tissue carbohydrate content during flight of the fed and starved cockroach, Periplaneta americana L

Proline as a Sparker Metabolite of Oxidative Metabolism during the Flight of the Bumblebee, Bombus impatiens

“…The importance of carbohydrates in fueling flight is reflected in the changes in concentrations of metabolic fuels and pathway intermediates. The extent of glycogen store use is a function of the availability of dietary carbohydrates where glycogen stores are depleted more rapidly in unfed insects [ 32 , 33 ]. Thoracic trehalose and glucose concentrations show more variability upon the initiation of flight, likely reflecting the balance between their use and synthesis.…”

“…Thoracic trehalose and glucose concentrations show more variability upon the initiation of flight, likely reflecting the balance between their use and synthesis. Some species, such as the flying cockroach, show a gradual decrease in thoracic muscle trehalose during the progression of a 15 min flight, but their glucose content shows an initial increase after 5 min, followed by a decrease [ 32 ]. In mosquitoes, which power their flight using carbohydrates, no clear change in trehalose content was observed, while glucose content decreased following prolonged flight [ 33 ].…”

Proline as a Sparker Metabolite of Oxidative Metabolism during the Flight of the Bumblebee, Bombus impatiens

“…The importance of carbohydrates in fueling flight is reflected in the changes in concentrations of metabolic fuels and pathway intermediates. The extent of glycogen store use is a function of the availability of dietary carbohydrates where glycogen stores are depleted more rapidly in unfed insects [ 32 , 33 ]. Thoracic trehalose and glucose concentrations show more variability upon the initiation of flight, likely reflecting the balance between their use and synthesis.…”

“…Thoracic trehalose and glucose concentrations show more variability upon the initiation of flight, likely reflecting the balance between their use and synthesis. Some species, such as the flying cockroach, show a gradual decrease in thoracic muscle trehalose during the progression of a 15 min flight, but their glucose content shows an initial increase after 5 min, followed by a decrease [ 32 ]. In mosquitoes, which power their flight using carbohydrates, no clear change in trehalose content was observed, while glucose content decreased following prolonged flight [ 33 ].…”

Insect Fat Body: Energy, Metabolism, and Regulation

“…Long-term flyers, such as locusts (125) and mosquitoes, subjected to several hours of flight (72, 73) start flying using trehalose and after some time switch to lipids. Short-term flyers such as the cockroach Periplaneta americana (41) use mostly trehalose. On the other hand, the Colorado potato beetle (Leptinotarsa decemlineata), which oxidizes proline to fuel flight, also needs a concomitant utilization of glucose to produce pyruvate and to allow the proline-alanine cycle to occur (48).…”

Energy use by the mountain pine beetle (Coleoptera: Curculionidae: Scolytinae) for dispersal by flight

“…The carbohydrate trehalose, which is the main blood sugar in insects, is a general substrate for insect flight. Short‐distance flyers, such as cockroaches, use trehalose as the major fuel for flight (Elliott et al ., ) and long distance flyers (e.g. locusts, mosquitoes) use trehalose to initiate flight but switch to lipid reserves for longer flights (Van der Horst et al ., ; Kaufmann & Briegel, ).…”

Proline as a Sparker Metabolite of Oxidative Metabolism during the Flight of the Bumblebee, Bombus impatiens

“…The importance of carbohydrates in fueling flight is reflected in the changes in concentrations of metabolic fuels and pathway intermediates. The extent of glycogen store use is a function of the availability of dietary carbohydrates where glycogen stores are depleted more rapidly in unfed insects [ 32 , 33 ]. Thoracic trehalose and glucose concentrations show more variability upon the initiation of flight, likely reflecting the balance between their use and synthesis.…”

“…Thoracic trehalose and glucose concentrations show more variability upon the initiation of flight, likely reflecting the balance between their use and synthesis. Some species, such as the flying cockroach, show a gradual decrease in thoracic muscle trehalose during the progression of a 15 min flight, but their glucose content shows an initial increase after 5 min, followed by a decrease [ 32 ]. In mosquitoes, which power their flight using carbohydrates, no clear change in trehalose content was observed, while glucose content decreased following prolonged flight [ 33 ].…”

Insect Fat Body: Energy, Metabolism, and Regulation

“…Long-term flyers, such as locusts (125) and mosquitoes, subjected to several hours of flight (72, 73) start flying using trehalose and after some time switch to lipids. Short-term flyers such as the cockroach Periplaneta americana (41) use mostly trehalose. On the other hand, the Colorado potato beetle (Leptinotarsa decemlineata), which oxidizes proline to fuel flight, also needs a concomitant utilization of glucose to produce pyruvate and to allow the proline-alanine cycle to occur (48).…”

Energy use by the mountain pine beetle (Coleoptera: Curculionidae: Scolytinae) for dispersal by flight

“…The carbohydrate trehalose, which is the main blood sugar in insects, is a general substrate for insect flight. Short‐distance flyers, such as cockroaches, use trehalose as the major fuel for flight (Elliott et al ., ) and long distance flyers (e.g. locusts, mosquitoes) use trehalose to initiate flight but switch to lipid reserves for longer flights (Van der Horst et al ., ; Kaufmann & Briegel, ).…”

Proline as a Sparker Metabolite of Oxidative Metabolism during the Flight of the Bumblebee, Bombus impatiens

“…The importance of carbohydrates in fueling flight is reflected in the changes in concentrations of metabolic fuels and pathway intermediates. The extent of glycogen store use is a function of the availability of dietary carbohydrates where glycogen stores are depleted more rapidly in unfed insects [ 32 , 33 ]. Thoracic trehalose and glucose concentrations show more variability upon the initiation of flight, likely reflecting the balance between their use and synthesis.…”

“…Thoracic trehalose and glucose concentrations show more variability upon the initiation of flight, likely reflecting the balance between their use and synthesis. Some species, such as the flying cockroach, show a gradual decrease in thoracic muscle trehalose during the progression of a 15 min flight, but their glucose content shows an initial increase after 5 min, followed by a decrease [ 32 ]. In mosquitoes, which power their flight using carbohydrates, no clear change in trehalose content was observed, while glucose content decreased following prolonged flight [ 33 ].…”

Insect Fat Body: Energy, Metabolism, and Regulation

“…Long-term flyers, such as locusts (125) and mosquitoes, subjected to several hours of flight (72, 73) start flying using trehalose and after some time switch to lipids. Short-term flyers such as the cockroach Periplaneta americana (41) use mostly trehalose. On the other hand, the Colorado potato beetle (Leptinotarsa decemlineata), which oxidizes proline to fuel flight, also needs a concomitant utilization of glucose to produce pyruvate and to allow the proline-alanine cycle to occur (48).…”

Energy use by the mountain pine beetle (Coleoptera: Curculionidae: Scolytinae) for dispersal by flight

“…The carbohydrate trehalose, which is the main blood sugar in insects, is a general substrate for insect flight. Short‐distance flyers, such as cockroaches, use trehalose as the major fuel for flight (Elliott et al ., ) and long distance flyers (e.g. locusts, mosquitoes) use trehalose to initiate flight but switch to lipid reserves for longer flights (Van der Horst et al ., ; Kaufmann & Briegel, ).…”