Journal
PHYSIOLOGICAL ENTOMOLOGY
Volume 32, Issue 2, Pages 175-180Publisher
WILEY
DOI: 10.1111/j.1365-3032.2006.00549.x
Keywords
insect vector; Q10 effect; respiration rate; sex-related variation; temperature effects
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Metabolic rate variation with temperature, body mass, gender and feeding status is documented for Glossina morsitans centralis. Metabolic rate [mean +/- SE; VCO2 = 19.78 +/- 3.11 mu L CO2 h(-1) in males (mean mass = 22.72 +/- 1.41 mg) and 27.34 +/- 3.86 mu L CO2 h(-1) in females (mean mass = 29.28 +/- 1.96 mg) at 24 degrees C in fasted individuals] is strongly influenced by temperature, body mass and feeding status, but not by gender once the effects of body mass have been accounted for. A significant interaction between gender and feeding status is seen, similar to patterns of metabolic rate variation documented in Glossina morsitans morsitans. Synthesis of metabolic rate-temperature relationships in G. m. centralis, G. m. morsitans and Glossina pallidipes indicate that biting frequency as well as mortality risks associated with foraging will probably increase with temperature as a consequence of increasing metabolic demands, although there is little evidence for variation among species at present. Furthermore, metabolic rate-body mass relationships appear to be similarly invariant among these species. These data provide important physiological information for bottom-up modelling of tsetse fly population dynamics.
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